RE: H e l p .... [7:73412]
: RE: H e l p [7:73412] Dom wrote: > > From our website - > > "Whilst not wishing to get involved in the 'holy war' of which text > editor is the best, Dom happens to like UltraEdit- 32 available > at > http://www.ultraedit.com. This is a comprehensive Text Editor, > HEX > Editor, HTML Editor and Programmers Editor. Syntax highlighting > is > available for hundreds of languages ranging from Ada to XML. > There is > even a syntax file for Cisco IOS command. What can that syntax file do? Thanks, Zsombor **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73463&t=73412 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
RE: H e l p .... [7:73412]
Dom wrote: > > From our website - > > "Whilst not wishing to get involved in the 'holy war' of which > text > editor is the best, Dom happens to like UltraEdit- 32 available > at > http://www.ultraedit.com. This is a comprehensive Text Editor, > HEX > Editor, HTML Editor and Programmers Editor. Syntax highlighting > is > available for hundreds of languages ranging from Ada to XML. > There is > even a syntax file for Cisco IOS command. What can that syntax file do? Thanks, Zsombor Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73456&t=73412 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: H e l p .... [7:73412]
Thanks Fred... it is good link :-) Cheers, Shab. ""Reimer, Fred"" wrote in message news:[EMAIL PROTECTED] > Go to www.vim.org and download gvim. Probably the best text editor out > there. You are likely running into the CR/LF LF issues, which gvim handles > nicely. > > Fred Reimer - CCNA > > > Eclipsys Corporation, 200 Ashford Center North, Atlanta, GA 30338 > Phone: 404-847-5177 Cell: 770-490-3071 Pager: 888-260-2050 > > > NOTICE; This email contains confidential or proprietary information which > may be legally privileged. It is intended only for the named recipient(s). > If an addressing or transmission error has misdirected the email, please > notify the author by replying to this message. If you are not the named > recipient, you are not authorized to use, disclose, distribute, copy, print > or rely on this email, and should immediately delete it from your computer. > > > -Original Message- > From: Shab Hanon [mailto:[EMAIL PROTECTED] > Sent: Sunday, August 03, 2003 6:12 AM > To: [EMAIL PROTECTED] > Subject: Re: H e l p [7:73412] > > Hi, > It will open but I cannot read any thing out of it "using Notepad"... the > out put looks something different from what I see in the router. > > I hear from a friend it must be opened via Unix editor for windows. > > And I am looking for that kind of editor. > > > Cheers, > Shab. > > > > > ""Zsombor Papp"" wrote in message > news:[EMAIL PROTECTED] > > I often use Notepad for this. What exactly happens when you say you can't > > open it? > > > > Or are you asking how to get the config out of the router? Check out the > > 'copy' commands on the router. Cut-n-paste also works great (in both > > directions), if your config is not too long. > > > > > > Thanks, > > > > Zsombor > > > > Shab Hanon wrote: > > > > > > Hello every body, > > > > > > I want to make some changes in the config file using Notepad... > > > but > > > unfortunately I can not open the config file as I see it in the > > > router... > > > > > > Can any one help me and tell me about a software to open and > > > make some > > > changes in the config file so I can upload it back into the > > > router. > > > > > > > > > Best regards, > > > Shab. > > **Please support GroupStudy by purchasing from the GroupStudy Store: > > http://shop.groupstudy.com > > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > **Please support GroupStudy by purchasing from the GroupStudy Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > **Please support GroupStudy by purchasing from the GroupStudy Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73454&t=73412 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
RE: H e l p .... [7:73412]
>From our website - "Whilst not wishing to get involved in the 'holy war' of which text editor is the best, Dom happens to like UltraEdit- 32 available at http://www.ultraedit.com. This is a comprehensive Text Editor, HEX Editor, HTML Editor and Programmers Editor. Syntax highlighting is available for hundreds of languages ranging from Ada to XML. There is even a syntax file for Cisco IOS command. Very useful for spotting typos. A time limited, fully functional download is available on the web site." Best regards, Dom Stocqueler SysDom Technologies Visit our website - www.sysdom.org -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: 03 August 2003 17:19 To: [EMAIL PROTECTED] Subject: RE: H e l p [7:73412] Or try Wordpad. Thanks, Zsombor Reimer, Fred wrote: > > Go to www.vim.org and download gvim. Probably the best text editor > out there. You are likely running into the CR/LF LF issues, which > gvim handles > nicely. > > Fred Reimer - CCNA > > > Eclipsys Corporation, 200 Ashford Center North, Atlanta, GA 30338 > Phone: 404-847-5177 Cell: 770-490-3071 Pager: 888-260-2050 > > > NOTICE; This email contains confidential or proprietary information > which may be legally privileged. It is intended only for the named > recipient(s). > If an addressing or transmission error has misdirected the > email, please > notify the author by replying to this message. If you are not > the named > recipient, you are not authorized to use, disclose, distribute, > copy, print > or rely on this email, and should immediately delete it from > your computer. > > > -Original Message- > From: Shab Hanon [mailto:[EMAIL PROTECTED] > Sent: Sunday, August 03, 2003 6:12 AM > To: [EMAIL PROTECTED] > Subject: Re: H e l p [7:73412] > > Hi, > It will open but I cannot read any thing out of it "using Notepad"... > the out put looks something different from what I see in the router. > > I hear from a friend it must be opened via Unix editor for windows. > > And I am looking for that kind of editor. > > > Cheers, > Shab. > > > > > ""Zsombor Papp"" wrote in message > news:[EMAIL PROTECTED] > > I often use Notepad for this. What exactly happens when you > say you can't > > open it? > > > > Or are you asking how to get the config out of the router? > Check out the > > 'copy' commands on the router. Cut-n-paste also works great > (in both > > directions), if your config is not too long. > > > > > > Thanks, > > > > Zsombor > > > > Shab Hanon wrote: > > > > > > Hello every body, > > > > > > I want to make some changes in the config file using > Notepad... > > > but > > > unfortunately I can not open the config file as I see it in > the > > > router... > > > > > > Can any one help me and tell me about a software to open and make > > > some changes in the config file so I can upload it back into the > > > router. > > > > > > > > > Best regards, > > > Shab. > > **Please support GroupStudy by purchasing from the GroupStudy > Store: > > http://shop.groupstudy.com > > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > **Please support GroupStudy by purchasing from the GroupStudy > Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73447&t=73412 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
RE: H e l p .... [7:73412]
Hi, try Wordpad. It can also open files created by copying the configuration via tftp. Jens Neelsen --- Zsombor Papp wrote: > I often use Notepad for this. What exactly happens when you > say you can't > open it? > > Or are you asking how to get the config out of the router? > Check out the > 'copy' commands on the router. Cut-n-paste also works great > (in both > directions), if your config is not too long. > > > Thanks, > > Zsombor > > Shab Hanon wrote: > > > > Hello every body, > > > > I want to make some changes in the config file using > Notepad... > > but > > unfortunately I can not open the config file as I see it in > the > > router... > > > > Can any one help me and tell me about a software to open and > > make some > > changes in the config file so I can upload it back into the > > router. > > > > > > Best regards, > > Shab. > **Please support GroupStudy by purchasing from the GroupStudy > Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73448&t=73412 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
RE: H e l p .... [7:73412]
Or try Wordpad. Thanks, Zsombor Reimer, Fred wrote: > > Go to www.vim.org and download gvim. Probably the best text > editor out > there. You are likely running into the CR/LF LF issues, which > gvim handles > nicely. > > Fred Reimer - CCNA > > > Eclipsys Corporation, 200 Ashford Center North, Atlanta, GA > 30338 > Phone: 404-847-5177 Cell: 770-490-3071 Pager: 888-260-2050 > > > NOTICE; This email contains confidential or proprietary > information which > may be legally privileged. It is intended only for the named > recipient(s). > If an addressing or transmission error has misdirected the > email, please > notify the author by replying to this message. If you are not > the named > recipient, you are not authorized to use, disclose, distribute, > copy, print > or rely on this email, and should immediately delete it from > your computer. > > > -Original Message- > From: Shab Hanon [mailto:[EMAIL PROTECTED] > Sent: Sunday, August 03, 2003 6:12 AM > To: [EMAIL PROTECTED] > Subject: Re: H e l p [7:73412] > > Hi, > It will open but I cannot read any thing out of it "using > Notepad"... the > out put looks something different from what I see in the router. > > I hear from a friend it must be opened via Unix editor for > windows. > > And I am looking for that kind of editor. > > > Cheers, > Shab. > > > > > ""Zsombor Papp"" wrote in message > news:[EMAIL PROTECTED] > > I often use Notepad for this. What exactly happens when you > say you can't > > open it? > > > > Or are you asking how to get the config out of the router? > Check out the > > 'copy' commands on the router. Cut-n-paste also works great > (in both > > directions), if your config is not too long. > > > > > > Thanks, > > > > Zsombor > > > > Shab Hanon wrote: > > > > > > Hello every body, > > > > > > I want to make some changes in the config file using > Notepad... > > > but > > > unfortunately I can not open the config file as I see it in > the > > > router... > > > > > > Can any one help me and tell me about a software to open and > > > make some > > > changes in the config file so I can upload it back into the > > > router. > > > > > > > > > Best regards, > > > Shab. > > **Please support GroupStudy by purchasing from the GroupStudy > Store: > > http://shop.groupstudy.com > > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > **Please support GroupStudy by purchasing from the GroupStudy > Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73444&t=73412 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
RE: H e l p .... [7:73412]
Go to www.vim.org and download gvim. Probably the best text editor out there. You are likely running into the CR/LF LF issues, which gvim handles nicely. Fred Reimer - CCNA Eclipsys Corporation, 200 Ashford Center North, Atlanta, GA 30338 Phone: 404-847-5177 Cell: 770-490-3071 Pager: 888-260-2050 NOTICE; This email contains confidential or proprietary information which may be legally privileged. It is intended only for the named recipient(s). If an addressing or transmission error has misdirected the email, please notify the author by replying to this message. If you are not the named recipient, you are not authorized to use, disclose, distribute, copy, print or rely on this email, and should immediately delete it from your computer. -Original Message- From: Shab Hanon [mailto:[EMAIL PROTECTED] Sent: Sunday, August 03, 2003 6:12 AM To: [EMAIL PROTECTED] Subject: Re: H e l p [7:73412] Hi, It will open but I cannot read any thing out of it "using Notepad"... the out put looks something different from what I see in the router. I hear from a friend it must be opened via Unix editor for windows. And I am looking for that kind of editor. Cheers, Shab. ""Zsombor Papp"" wrote in message news:[EMAIL PROTECTED] > I often use Notepad for this. What exactly happens when you say you can't > open it? > > Or are you asking how to get the config out of the router? Check out the > 'copy' commands on the router. Cut-n-paste also works great (in both > directions), if your config is not too long. > > > Thanks, > > Zsombor > > Shab Hanon wrote: > > > > Hello every body, > > > > I want to make some changes in the config file using Notepad... > > but > > unfortunately I can not open the config file as I see it in the > > router... > > > > Can any one help me and tell me about a software to open and > > make some > > changes in the config file so I can upload it back into the > > router. > > > > > > Best regards, > > Shab. > **Please support GroupStudy by purchasing from the GroupStudy Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73440&t=73412 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: H e l p .... [7:73412]
Hi, It will open but I cannot read any thing out of it "using Notepad"... the out put looks something different from what I see in the router. I hear from a friend it must be opened via Unix editor for windows. And I am looking for that kind of editor. Cheers, Shab. ""Zsombor Papp"" wrote in message news:[EMAIL PROTECTED] > I often use Notepad for this. What exactly happens when you say you can't > open it? > > Or are you asking how to get the config out of the router? Check out the > 'copy' commands on the router. Cut-n-paste also works great (in both > directions), if your config is not too long. > > > Thanks, > > Zsombor > > Shab Hanon wrote: > > > > Hello every body, > > > > I want to make some changes in the config file using Notepad... > > but > > unfortunately I can not open the config file as I see it in the > > router... > > > > Can any one help me and tell me about a software to open and > > make some > > changes in the config file so I can upload it back into the > > router. > > > > > > Best regards, > > Shab. > **Please support GroupStudy by purchasing from the GroupStudy Store: > http://shop.groupstudy.com > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73436&t=73412 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
RE: H e l p .... [7:73412]
If you are using HyperTerm (comes with Windows) as many people do, you can use the Capture command. Click Tools - Capture. Make a note of where it will save the file. Do a show config or such on the router, then click Tools - Capture - Stop Capture. This will save a file called CAPTURE.TXT. This can be opened with notepad. Have fun! Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73421&t=73412 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
RE: H e l p .... [7:73412]
I often use Notepad for this. What exactly happens when you say you can't open it? Or are you asking how to get the config out of the router? Check out the 'copy' commands on the router. Cut-n-paste also works great (in both directions), if your config is not too long. Thanks, Zsombor Shab Hanon wrote: > > Hello every body, > > I want to make some changes in the config file using Notepad... > but > unfortunately I can not open the config file as I see it in the > router... > > Can any one help me and tell me about a software to open and > make some > changes in the config file so I can upload it back into the > router. > > > Best regards, > Shab. > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=73414&t=73412 -- **Please support GroupStudy by purchasing from the GroupStudy Store: http://shop.groupstudy.com FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Re: !H !H !H!H
At 08:13 AM 11/21/00, Chris Larson wrote: >My point being that the response you will see at a workstation will not >always be the same as the response you will see at the console of a Cisco >router. The router generally has a more robust implementation of ICMP then >the Windows workstation. In a sniffer trace you will see certain types of >ICMP replies that the Windows boxes simply report as destination >unreachables, or even timeouts even though the ICMP type as specified by6 >the RFC's is not simply unreachable. I could believe that some implementations don't always provide to the end user the code that goes with the Destination Unreachable message. I have also seen MS-DOS Ping report a timeout even though the router sent a reply or ICMP message. Sniffing is required to know what's really going on. How much ICMP an OS must implement is standardized by the IETF in the Host Requirements document, RFC 1112, but the document is unclear regarding how many details to report to the user. (It doesn't really deal with users whatsoever). One LAST comment (I promise): There are some cases where it's the end node (workstation, server, or whatever) that sends back the Destination Unreachable. A workstation might send a Protocol Unreachable or Port Unreachable. Protocol Unreachable means the station doesn't understand the protocol field in the IP header. Port Unreachable means it doesn't recognize the TCP or UDP port. Some varieties of traceroute take advantage of the fact that a workstation will send back a Dest Unreachable, Port Unreachable. In particular, most Cisco and UNIX traceroute implementations send to a large UDP port number that won't be recognized by the end node. The end node sends back Dest Unreachable, Port Unreachable. This is a good thing because it lets you traceroute all the way to the end node, past all the routers in the chain. I am going on and on about this subject because I think it's so important. An understanding of Destination Unreachable means a good understanding of how packets are forwarded in an internetwork. My messages aren't directed to anyone in particular, (in case you're wondering, Chris). I'm just using them as a "training" forum. I can't help it. Once an instructor, always an instructor. &;-) Priscilla >Of course, that is what I meant. Not that the workstation sends an ICMP, but >that what it recieves from the router is simply a timeout. > > > >- Original Message - >From: "Priscilla Oppenheimer" <[EMAIL PROTECTED]> >To: <[EMAIL PROTECTED]> >Sent: Monday, November 20, 2000 4:47 PM >Subject: Re: !H !H !H!H > > >At 03:25 PM 11/20/00, Chris Larson wrote: > >Even if this was correct you cannot simply by getting an !h say that this >is > >from an access-list. There are many reasons for a host unreachable message. > > > >Also, from most workstations (Windows that is), you will simply get a > >timeout and neither !A or !h from packets being denied by an access-list. > >Sending a Destination Unreachable is the job of the Router, not the >workstation. Whether it sends an A, H, or nothing depends on the >implementation of ICMP that it is running. > >Priscilla Priscilla Oppenheimer http://www.priscilla.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: !H !H !H!H I GOT IT!! THANKS ALL!
The real important thing when working with computers in the real world to remember is:(and you will make it) 1. Don't ever say, always or never to an engineer. They will prove you wrong. 2. Read the vendor docs but don't believe them. Test everything!!! I work in a test lab environment in which we certify hardware and software before we place it on our network. Which is in the millions of hosts. We are a communications company. I made the same mistake early on to the other computer/network/electrical engineers I work with by saying "the documentation says" when they all got up off the ground and stopped laughing at me. They told me, if we went by what the documentation says we would not need a test lab, we would all lose our job, and that salesmen would rule the world not engineers. 3. Reinvent yourself every 6 months. There is no such thing as old in engineering just A. Obsolete - we don't use it anymore B. Foundation - what all new is built on C. New - what we use today, but will be either A or B tomorrow. 4. The engineering creed - a. Keep it simple. b. Don't reinvent the wheel. My personal favorite: c. Don't work any harder than you have to. These 4 also make a good Network Engineer so apply them, they have gotten me where I want to be. I definitely would like to see the results of your testing. If you can please send the test methodolgy, results, and config for the test. i would appreciate that. Don - Original Message - From: Jennifer Cribbs <[EMAIL PROTECTED]> To: Donald B Johnson Jr <[EMAIL PROTECTED]>; cisco <[EMAIL PROTECTED]> Sent: Monday, November 20, 2000 1:38 PM Subject: RE: !H !H !H!H I GOT IT!! THANKS ALL! You are correct!! And I have got tons of e-mail regarding this. I stand humbled before everyone. And I do understand. I was just telling my husband about this and he laughed. He is used to me thinking I am always correct. The good thing about this, is that I have learned about !A and !H and I want to thank everyone. The real world is different and you wait guys...I will be there one day. Jennifer Cribbs [EMAIL PROTECTED] >= Original Message From "Donald B Johnson Jr" <[EMAIL PROTECTED]> = >jennifer >the reason people are jumping on this is because you stated something and >then on a line under it you said >and that is it or something to that effect. >have you tried it out in the lab environment, that would be the answer not >what is in a book, which are flawed. >Duck >- Original Message - >From: Jennifer Cribbs <[EMAIL PROTECTED]> >To: Rossetti, Stan <[EMAIL PROTECTED]>; cisco ><[EMAIL PROTECTED]> >Sent: Monday, November 20, 2000 11:45 AM >Subject: RE: !H !H !H!H > > >This is where I am getting my info.. > >Ref: chapter 8 of Intro to Cisco Router Configuration >pages 229-230 > >It says responses to trace command include: >!H The probe was rceived by the router, but not forwarded, usually due to >an >access list. >PThe protocol was unreachable >NThe network was unreachable >UThe port was unreachable >*Timout > >Jennifer Cribbs >[EMAIL PROTECTED] > > > > > >>= Original Message From "Rossetti, Stan" <[EMAIL PROTECTED]> >= >>Are you sure? Page 1163 of Cisco IOS Configuration Fundamentals states >that >>the character A signifies that the destination is "Administratively >>Unreachable. Usually, this output indicates that an access list is >blocking >>traffic." >> >>-Original Message- >>From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] >>Sent: Monday, November 20, 2000 1:13 PM >>To: cisco; [EMAIL PROTECTED] >>Subject: RE: !H !H !H!H >> >> >>On the traceroute command: >> >>!H is returned 3 times if an access list prevents a router from forwarding >>the >>packet to the HOST. The 'trace' command is used to determine the route >>taken >>to a remote host. All the hops are shown as the trace probe moves toward >>the >>destination. Three probes are issued. The response time of each probe >will >> >>be displayed if successful. >> >>The trace command returns a N if the network is unreachable. >>The P is the response if the protocol is unreachable. >>An * is a timeout. >>!H is the return for what I said above but it is regarding a traceroute >>command, >>and not a ping. >> >>Jennifer Cribbs >>[EMAIL PROTECTED] >> >> >> >>>= Original Message From "Rossetti, Stan" <[EMAIL PROTECTED]> >>= >>>I thought !A meant this path is blocked by an access list. >>> >>>-Original Message- >>&
Re: !H !H !H!H
My point being that the response you will see at a workstation will not always be the same as the response you will see at the console of a Cisco router. The router generally has a more robust implementation of ICMP then the Windows workstation. In a sniffer trace you will see certain types of ICMP replies that the Windows boxes simply report as destination unreachables, or even timeouts even though the ICMP type as specified by6 the RFC's is not simply unreachable. Of course, that is what I meant. Not that the workstation sends an ICMP, but that what it recieves from the router is simply a timeout. - Original Message - From: "Priscilla Oppenheimer" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, November 20, 2000 4:47 PM Subject: Re: !H !H !H!H At 03:25 PM 11/20/00, Chris Larson wrote: >Even if this was correct you cannot simply by getting an !h say that this is >from an access-list. There are many reasons for a host unreachable message. > >Also, from most workstations (Windows that is), you will simply get a >timeout and neither !A or !h from packets being denied by an access-list. Sending a Destination Unreachable is the job of the Router, not the workstation. Whether it sends an A, H, or nothing depends on the implementation of ICMP that it is running. Priscilla >- Original Message - >From: "Rossetti, Stan" <[EMAIL PROTECTED]> >To: "'Jennifer Cribbs'" <[EMAIL PROTECTED]>; "cisco" ><[EMAIL PROTECTED]>; "Rossetti, Stan" <[EMAIL PROTECTED]> >Sent: Monday, November 20, 2000 2:23 PM >Subject: RE: !H !H !H!H > > >Are you sure? Page 1163 of Cisco IOS Configuration Fundamentals states that >the character A signifies that the destination is "Administratively >Unreachable. Usually, this output indicates that an access list is blocking >traffic." > >-Original Message- >From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] >Sent: Monday, November 20, 2000 1:13 PM >To: cisco; [EMAIL PROTECTED] >Subject: RE: !H !H !H!H > > >On the traceroute command: > >!H is returned 3 times if an access list prevents a router from forwarding >the >packet to the HOST. The 'trace' command is used to determine the route >taken >to a remote host. All the hops are shown as the trace probe moves toward >the >destination. Three probes are issued. The response time of each probe will > >be displayed if successful. > >The trace command returns a N if the network is unreachable. >The P is the response if the protocol is unreachable. >An * is a timeout. >!H is the return for what I said above but it is regarding a traceroute >command, >and not a ping. > >Jennifer Cribbs >[EMAIL PROTECTED] > > > > >= Original Message From "Rossetti, Stan" <[EMAIL PROTECTED]> >= > >I thought !A meant this path is blocked by an access list. > > > >-Original Message- > >From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] > >Sent: Monday, November 20, 2000 12:13 PM > >To: [EMAIL PROTECTED] > >Subject: RE: !H not a complete answer > > > > > >This response is returned when an access list somewhere along the path > >prevents a router from forwarding a packet to the HOST. > > > >and that is correct. > > > >Jennifer Cribbs > >[EMAIL PROTECTED] > > > > > >>= Original Message From "Croyle, James" <[EMAIL PROTECTED]> = > >>http://www.cisco.com/warp/public/112/chapter7.htm > >> > >>I think you have a routing loop as is described here. Ping from several > >>stations and map it out. > >> > >>Jim > >> > >> > >>-Original Message- > >>From: Miller, Nathan (AZ15) > >>To: Richard Bosire; Jason yee > >>Cc: John Huston; [EMAIL PROTECTED] > >>Sent: 11/20/00 11:15 AM > >>Subject: RE: !H > >> > >>Does it meas that the destination NETWORK is unreachable or the > >>destination > >>HOST?? > >> > >>-Original Message- > >>From: Richard Bosire [mailto:[EMAIL PROTECTED]] > >>Sent: Monday, November 20, 2000 8:01 AM > >>To: Jason yee > >>Cc: John Huston; [EMAIL PROTECTED] > >>Subject: Re: !H > >> > >> > >>destination unreachable i.e not path to the destination network > >> > >>Jason yee wrote: > >> > >>> hi anyone knows what does the symbol !H means in > >>> traceroute results > >>> > >>> __ > >>> Do Y
Re: !H !H !H!H
Of course, that is what I meant. Not that the workstation sends an ICMP, but that what it recieves from the router is simply a timeout. - Original Message - From: "Priscilla Oppenheimer" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, November 20, 2000 4:47 PM Subject: Re: !H !H !H!H At 03:25 PM 11/20/00, Chris Larson wrote: >Even if this was correct you cannot simply by getting an !h say that this is >from an access-list. There are many reasons for a host unreachable message. > >Also, from most workstations (Windows that is), you will simply get a >timeout and neither !A or !h from packets being denied by an access-list. Sending a Destination Unreachable is the job of the Router, not the workstation. Whether it sends an A, H, or nothing depends on the implementation of ICMP that it is running. Priscilla >- Original Message - >From: "Rossetti, Stan" <[EMAIL PROTECTED]> >To: "'Jennifer Cribbs'" <[EMAIL PROTECTED]>; "cisco" ><[EMAIL PROTECTED]>; "Rossetti, Stan" <[EMAIL PROTECTED]> >Sent: Monday, November 20, 2000 2:23 PM >Subject: RE: !H !H !H!H > > >Are you sure? Page 1163 of Cisco IOS Configuration Fundamentals states that >the character A signifies that the destination is "Administratively >Unreachable. Usually, this output indicates that an access list is blocking >traffic." > >-Original Message- >From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] >Sent: Monday, November 20, 2000 1:13 PM >To: cisco; [EMAIL PROTECTED] >Subject: RE: !H !H !H!H > > >On the traceroute command: > >!H is returned 3 times if an access list prevents a router from forwarding >the >packet to the HOST. The 'trace' command is used to determine the route >taken >to a remote host. All the hops are shown as the trace probe moves toward >the >destination. Three probes are issued. The response time of each probe will > >be displayed if successful. > >The trace command returns a N if the network is unreachable. >The P is the response if the protocol is unreachable. >An * is a timeout. >!H is the return for what I said above but it is regarding a traceroute >command, >and not a ping. > >Jennifer Cribbs >[EMAIL PROTECTED] > > > > >= Original Message From "Rossetti, Stan" <[EMAIL PROTECTED]> >= > >I thought !A meant this path is blocked by an access list. > > > >-Original Message- > >From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] > >Sent: Monday, November 20, 2000 12:13 PM > >To: [EMAIL PROTECTED] > >Subject: RE: !H not a complete answer > > > > > >This response is returned when an access list somewhere along the path > >prevents a router from forwarding a packet to the HOST. > > > >and that is correct. > > > >Jennifer Cribbs > >[EMAIL PROTECTED] > > > > > >>= Original Message From "Croyle, James" <[EMAIL PROTECTED]> = > >>http://www.cisco.com/warp/public/112/chapter7.htm > >> > >>I think you have a routing loop as is described here. Ping from several > >>stations and map it out. > >> > >>Jim > >> > >> > >>-Original Message- > >>From: Miller, Nathan (AZ15) > >>To: Richard Bosire; Jason yee > >>Cc: John Huston; [EMAIL PROTECTED] > >>Sent: 11/20/00 11:15 AM > >>Subject: RE: !H > >> > >>Does it meas that the destination NETWORK is unreachable or the > >>destination > >>HOST?? > >> > >>-Original Message- > >>From: Richard Bosire [mailto:[EMAIL PROTECTED]] > >>Sent: Monday, November 20, 2000 8:01 AM > >>To: Jason yee > >>Cc: John Huston; [EMAIL PROTECTED] > >>Subject: Re: !H > >> > >> > >>destination unreachable i.e not path to the destination network > >> > >>Jason yee wrote: > >> > >>> hi anyone knows what does the symbol !H means in > >>> traceroute results > >>> > >>> __ > >>> Do You Yahoo!? > >>> Yahoo! Calendar - Get organized for the holidays! > >>> http://calendar.yahoo.com/ > >>> > >>> _ > >>> FAQ, list archives, and subscription info: > >>http://www.groupstudy.com/list/cisco.html > >>> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > >> > >>-- > >>
RE: !H not a complete answer
thanks -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Donald B Johnson Jr Sent: Tuesday, November 21, 2000 7:03 AM To: Jennifer Cribbs; [EMAIL PROTECTED] Subject: Re: !H not a complete answer wouldn't that be an A response Duck - Original Message - From: Jennifer Cribbs <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, November 20, 2000 10:12 AM Subject: RE: !H not a complete answer This response is returned when an access list somewhere along the path prevents a router from forwarding a packet to the HOST. and that is correct. Jennifer Cribbs [EMAIL PROTECTED] >= Original Message From "Croyle, James" <[EMAIL PROTECTED]> = >http://www.cisco.com/warp/public/112/chapter7.htm > >I think you have a routing loop as is described here. Ping from several >stations and map it out. > >Jim > > >-Original Message- >From: Miller, Nathan (AZ15) >To: Richard Bosire; Jason yee >Cc: John Huston; [EMAIL PROTECTED] >Sent: 11/20/00 11:15 AM >Subject: RE: !H > >Does it meas that the destination NETWORK is unreachable or the >destination >HOST?? > >-Original Message- >From: Richard Bosire [mailto:[EMAIL PROTECTED]] >Sent: Monday, November 20, 2000 8:01 AM >To: Jason yee >Cc: John Huston; [EMAIL PROTECTED] >Subject: Re: !H > > >destination unreachable i.e not path to the destination network > >Jason yee wrote: > >> hi anyone knows what does the symbol !H means in >> traceroute results >> >> __ >> Do You Yahoo!? >> Yahoo! Calendar - Get organized for the holidays! >> http://calendar.yahoo.com/ >> >> _ >> FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > >-- >___ >«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤ > >Richard Bosire >Network Engineer CCNA,CCSE >AfricaOnline (k) Ltd >tel +254-2-243775 fax +254-2-243762 >http://www.africaonline.co.ke > > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > >_ >FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: !H
Oh Sure! Just go ahead and site actual data! Sheesh! What is the world coming to when people do their own sniffer traces and debugs and such instead of simply trusting the manuals... [=`) Thanks Marty! This is the kind of experimenting that we list members need to do more often! Z >From: Marty Adkins <[EMAIL PROTECTED]> >Reply-To: Marty Adkins <[EMAIL PROTECTED]> >To: Priscilla Oppenheimer <[EMAIL PROTECTED]>, [EMAIL PROTECTED] >Subject: Re: !H >Date: Mon, 20 Nov 2000 17:29:59 -0500 > >Priscilla Oppenheimer wrote: > > > > H means host unreachable. Jumping to the conclusion that there's a >routing > > problem isn't logical (though I know that what's the Tech Note document > > says.) The host could be turned off. A host unreachable happens when the > > last-hop router tries to ARP for the device and doesn't get a response. > > >This isn't what I've seen and captured with a protocol analyzer, nor >viewed via debug. If any router is missing an ARP entry (or any other >type of next-hop data link address), it will silently drop the packet. >The output of "debug ip packet" will report "encapsulation failed". > >OTOH, if any router in the chain lacks a route to the destination, that >router will generate an ICMP _host_ unreachable, not network unreachable. >I agree this is not intuitive, but here's the screen output from a >WinThing attempting to ping a bogus address, and the debug output from >its default gateway: > >C:\WINDOWS>ping 10.0.0.1 > >Pinging 10.0.0.1 with 32 bytes of data: > >Reply from 192.1.63.196: Destination host unreachable. >Reply from 192.1.63.196: Destination host unreachable. >Reply from 192.1.63.196: Destination host unreachable. >Reply from 192.1.63.196: Destination host unreachable. > >Ping statistics for 10.0.0.1: > Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), >Approximate round trip times in milli-seconds: > Minimum = 0ms, Maximum = 0ms, Average = 0ms >-- >06:47:58: ICMP: dst (10.0.0.1) host unreachable sent to 192.1.63.198 >06:47:59: ICMP: dst (10.0.0.1) host unreachable sent to 192.1.63.198 >06:48:00: ICMP: dst (10.0.0.1) host unreachable sent to 192.1.63.198 >06:48:01: ICMP: dst (10.0.0.1) host unreachable sent to 192.1.63.198 > > Marty Adkins Email: [EMAIL PROTECTED] > Mentor Technologies Phone: 410-280-8840 x3006 > 275 West Street, Plaza 70WWW: http://www.mentortech.com > Annapolis, MD 21401 Cisco CCIE #1289 > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ Get more from the Web. FREE MSN Explorer download : http://explorer.msn.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: !H
Hi Marty, You would think the router would use Net Unreachable if it had no route, rather than Host Unreachable. But I did some testing and got the same results as you. It sends Host Unreachable. I couldn't get it to send Net Unreachable, but I didn't do extensive testing. The RFC says that if the router determines it can't reach a host it can send Host Unreachable. I guess if it doesn't have a route, it's smart enough to know it can't reach the host. The RFC says this: "If, according to the information in the gateway's routing tables, the network specified in the internet destination field of a datagram is unreachable, for example, the distance to the network is infinity, the gateway may send a destination unreachable message to the internet source host of the datagram. In addition, in some networks, the gateway may be able to determine if the internet destination host is unreachable. Gateways in these networks may send destination unreachable messages to the source host when the destination host is unreachable." Thanks for the update. We now have one more piece to the puzzle. Priscilla At 05:29 PM 11/20/00, Marty Adkins wrote: >Priscilla Oppenheimer wrote: > > > > H means host unreachable. Jumping to the conclusion that there's a routing > > problem isn't logical (though I know that what's the Tech Note document > > says.) The host could be turned off. A host unreachable happens when the > > last-hop router tries to ARP for the device and doesn't get a response. > > >This isn't what I've seen and captured with a protocol analyzer, nor >viewed via debug. If any router is missing an ARP entry (or any other >type of next-hop data link address), it will silently drop the packet. >The output of "debug ip packet" will report "encapsulation failed". > >OTOH, if any router in the chain lacks a route to the destination, that >router will generate an ICMP _host_ unreachable, not network unreachable. >I agree this is not intuitive, but here's the screen output from a >WinThing attempting to ping a bogus address, and the debug output from >its default gateway: > >C:\WINDOWS>ping 10.0.0.1 > >Pinging 10.0.0.1 with 32 bytes of data: > >Reply from 192.1.63.196: Destination host unreachable. >Reply from 192.1.63.196: Destination host unreachable. >Reply from 192.1.63.196: Destination host unreachable. >Reply from 192.1.63.196: Destination host unreachable. > >Ping statistics for 10.0.0.1: > Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), >Approximate round trip times in milli-seconds: > Minimum = 0ms, Maximum = 0ms, Average = 0ms >-- >06:47:58: ICMP: dst (10.0.0.1) host unreachable sent to 192.1.63.198 >06:47:59: ICMP: dst (10.0.0.1) host unreachable sent to 192.1.63.198 >06:48:00: ICMP: dst (10.0.0.1) host unreachable sent to 192.1.63.198 >06:48:01: ICMP: dst (10.0.0.1) host unreachable sent to 192.1.63.198 > > Marty Adkins Email: [EMAIL PROTECTED] > Mentor Technologies Phone: 410-280-8840 x3006 > 275 West Street, Plaza 70WWW: http://www.mentortech.com > Annapolis, MD 21401 Cisco CCIE #1289 Priscilla Oppenheimer http://www.priscilla.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: !H !H !H!H
jennifer the reason people are jumping on this is because you stated something and then on a line under it you said and that is it or something to that effect. have you tried it out in the lab environment, that would be the answer not what is in a book, which are flawed. Duck - Original Message - From: Jennifer Cribbs <[EMAIL PROTECTED]> To: Rossetti, Stan <[EMAIL PROTECTED]>; cisco <[EMAIL PROTECTED]> Sent: Monday, November 20, 2000 11:45 AM Subject: RE: !H !H !H!H This is where I am getting my info.. Ref: chapter 8 of Intro to Cisco Router Configuration pages 229-230 It says responses to trace command include: !H The probe was rceived by the router, but not forwarded, usually due to an access list. PThe protocol was unreachable NThe network was unreachable UThe port was unreachable *Timout Jennifer Cribbs [EMAIL PROTECTED] >= Original Message From "Rossetti, Stan" <[EMAIL PROTECTED]> = >Are you sure? Page 1163 of Cisco IOS Configuration Fundamentals states that >the character A signifies that the destination is "Administratively >Unreachable. Usually, this output indicates that an access list is blocking >traffic." > >-Original Message- >From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] >Sent: Monday, November 20, 2000 1:13 PM >To: cisco; [EMAIL PROTECTED] >Subject: RE: !H !H !H!H > > >On the traceroute command: > >!H is returned 3 times if an access list prevents a router from forwarding >the >packet to the HOST. The 'trace' command is used to determine the route >taken >to a remote host. All the hops are shown as the trace probe moves toward >the >destination. Three probes are issued. The response time of each probe will > >be displayed if successful. > >The trace command returns a N if the network is unreachable. >The P is the response if the protocol is unreachable. >An * is a timeout. >!H is the return for what I said above but it is regarding a traceroute >command, >and not a ping. > >Jennifer Cribbs >[EMAIL PROTECTED] > > > >>= Original Message From "Rossetti, Stan" <[EMAIL PROTECTED]> >= >>I thought !A meant this path is blocked by an access list. >> >>-Original Message- >>From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] >>Sent: Monday, November 20, 2000 12:13 PM >>To: [EMAIL PROTECTED] >>Subject: RE: !H not a complete answer >> >> >>This response is returned when an access list somewhere along the path >>prevents a router from forwarding a packet to the HOST. >> >>and that is correct. >> >>Jennifer Cribbs >>[EMAIL PROTECTED] >> >> >>>= Original Message From "Croyle, James" <[EMAIL PROTECTED]> = >>>http://www.cisco.com/warp/public/112/chapter7.htm >>> >>>I think you have a routing loop as is described here. Ping from several >>>stations and map it out. >>> >>>Jim >>> >>> >>>-Original Message- >>>From: Miller, Nathan (AZ15) >>>To: Richard Bosire; Jason yee >>>Cc: John Huston; [EMAIL PROTECTED] >>>Sent: 11/20/00 11:15 AM >>>Subject: RE: !H >>> >>>Does it meas that the destination NETWORK is unreachable or the >>>destination >>>HOST?? >>> >>>-Original Message- >>>From: Richard Bosire [mailto:[EMAIL PROTECTED]] >>>Sent: Monday, November 20, 2000 8:01 AM >>>To: Jason yee >>>Cc: John Huston; [EMAIL PROTECTED] >>>Subject: Re: !H >>> >>> >>>destination unreachable i.e not path to the destination network >>> >>>Jason yee wrote: >>> >>> hi anyone knows what does the symbol !H means in >>> traceroute results >>> >>> __ >>> Do You Yahoo!? >>> Yahoo! Calendar - Get organized for the holidays! >>> http://calendar.yahoo.com/ >>> >>> _ >>> FAQ, list archives, and subscription info: >>>http://www.groupstudy.com/list/cisco.html >>> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >>> >>>-- >>>___ >>>«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤ >>> >>>Richard Bosire >>>Network Engineer CCNA,CCSE >>>AfricaOnline (k) Ltd >>>tel +254-2-243775 fax +254-2-243762 >>>http://www.africaonline.co.ke >>> >>> >>>_ >>>FAQ, lis
Re: !H
Priscilla Oppenheimer wrote: > > H means host unreachable. Jumping to the conclusion that there's a routing > problem isn't logical (though I know that what's the Tech Note document > says.) The host could be turned off. A host unreachable happens when the > last-hop router tries to ARP for the device and doesn't get a response. > This isn't what I've seen and captured with a protocol analyzer, nor viewed via debug. If any router is missing an ARP entry (or any other type of next-hop data link address), it will silently drop the packet. The output of "debug ip packet" will report "encapsulation failed". OTOH, if any router in the chain lacks a route to the destination, that router will generate an ICMP _host_ unreachable, not network unreachable. I agree this is not intuitive, but here's the screen output from a WinThing attempting to ping a bogus address, and the debug output from its default gateway: C:\WINDOWS>ping 10.0.0.1 Pinging 10.0.0.1 with 32 bytes of data: Reply from 192.1.63.196: Destination host unreachable. Reply from 192.1.63.196: Destination host unreachable. Reply from 192.1.63.196: Destination host unreachable. Reply from 192.1.63.196: Destination host unreachable. Ping statistics for 10.0.0.1: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms -- 06:47:58: ICMP: dst (10.0.0.1) host unreachable sent to 192.1.63.198 06:47:59: ICMP: dst (10.0.0.1) host unreachable sent to 192.1.63.198 06:48:00: ICMP: dst (10.0.0.1) host unreachable sent to 192.1.63.198 06:48:01: ICMP: dst (10.0.0.1) host unreachable sent to 192.1.63.198 Marty Adkins Email: [EMAIL PROTECTED] Mentor Technologies Phone: 410-280-8840 x3006 275 West Street, Plaza 70WWW: http://www.mentortech.com Annapolis, MD 21401 Cisco CCIE #1289 _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: !H !H !H!H
At 03:25 PM 11/20/00, Chris Larson wrote: >Even if this was correct you cannot simply by getting an !h say that this is >from an access-list. There are many reasons for a host unreachable message. > >Also, from most workstations (Windows that is), you will simply get a >timeout and neither !A or !h from packets being denied by an access-list. Sending a Destination Unreachable is the job of the Router, not the workstation. Whether it sends an A, H, or nothing depends on the implementation of ICMP that it is running. Priscilla >- Original Message - >From: "Rossetti, Stan" <[EMAIL PROTECTED]> >To: "'Jennifer Cribbs'" <[EMAIL PROTECTED]>; "cisco" ><[EMAIL PROTECTED]>; "Rossetti, Stan" <[EMAIL PROTECTED]> >Sent: Monday, November 20, 2000 2:23 PM >Subject: RE: !H !H !H!H > > >Are you sure? Page 1163 of Cisco IOS Configuration Fundamentals states that >the character A signifies that the destination is "Administratively >Unreachable. Usually, this output indicates that an access list is blocking >traffic." > >-Original Message----- >From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] >Sent: Monday, November 20, 2000 1:13 PM >To: cisco; [EMAIL PROTECTED] >Subject: RE: !H !H !H!H > > >On the traceroute command: > >!H is returned 3 times if an access list prevents a router from forwarding >the >packet to the HOST. The 'trace' command is used to determine the route >taken >to a remote host. All the hops are shown as the trace probe moves toward >the >destination. Three probes are issued. The response time of each probe will > >be displayed if successful. > >The trace command returns a N if the network is unreachable. >The P is the response if the protocol is unreachable. >An * is a timeout. >!H is the return for what I said above but it is regarding a traceroute >command, >and not a ping. > >Jennifer Cribbs >[EMAIL PROTECTED] > > > > >= Original Message From "Rossetti, Stan" <[EMAIL PROTECTED]> >= > >I thought !A meant this path is blocked by an access list. > > > >-Original Message- > >From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] > >Sent: Monday, November 20, 2000 12:13 PM > >To: [EMAIL PROTECTED] > >Subject: RE: !H not a complete answer > > > > > >This response is returned when an access list somewhere along the path > >prevents a router from forwarding a packet to the HOST. > > > >and that is correct. > > > >Jennifer Cribbs > >[EMAIL PROTECTED] > > > > > >>= Original Message From "Croyle, James" <[EMAIL PROTECTED]> = > >>http://www.cisco.com/warp/public/112/chapter7.htm > >> > >>I think you have a routing loop as is described here. Ping from several > >>stations and map it out. > >> > >>Jim > >> > >> > >>-----Original Message- > >>From: Miller, Nathan (AZ15) > >>To: Richard Bosire; Jason yee > >>Cc: John Huston; [EMAIL PROTECTED] > >>Sent: 11/20/00 11:15 AM > >>Subject: RE: !H > >> > >>Does it meas that the destination NETWORK is unreachable or the > >>destination > >>HOST?? > >> > >>-Original Message- > >>From: Richard Bosire [mailto:[EMAIL PROTECTED]] > >>Sent: Monday, November 20, 2000 8:01 AM > >>To: Jason yee > >>Cc: John Huston; [EMAIL PROTECTED] > >>Subject: Re: !H > >> > >> > >>destination unreachable i.e not path to the destination network > >> > >>Jason yee wrote: > >> > >>> hi anyone knows what does the symbol !H means in > >>> traceroute results > >>> > >>> __ > >>> Do You Yahoo!? > >>> Yahoo! Calendar - Get organized for the holidays! > >>> http://calendar.yahoo.com/ > >>> > >>> _ > >>> FAQ, list archives, and subscription info: > >>http://www.groupstudy.com/list/cisco.html > >>> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > >> > >>-- > >>___ > >>«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤ > >> > >>Richard Bosire > >>Network Engineer CCNA,CCSE > >>AfricaOnline (k) Ltd > >>tel +254-2-243775 fax +254-2-243762 > >>http://www.africaonline.co.ke > >> > >> > >>
RE: !H !H !H!H I GOT IT!! THANKS ALL!
You are correct!! And I have got tons of e-mail regarding this. I stand humbled before everyone. And I do understand. I was just telling my husband about this and he laughed. He is used to me thinking I am always correct. The good thing about this, is that I have learned about !A and !H and I want to thank everyone. The real world is different and you wait guys...I will be there one day. Jennifer Cribbs [EMAIL PROTECTED] >= Original Message From "Donald B Johnson Jr" <[EMAIL PROTECTED]> = >jennifer >the reason people are jumping on this is because you stated something and >then on a line under it you said >and that is it or something to that effect. >have you tried it out in the lab environment, that would be the answer not >what is in a book, which are flawed. >Duck >- Original Message - >From: Jennifer Cribbs <[EMAIL PROTECTED]> >To: Rossetti, Stan <[EMAIL PROTECTED]>; cisco ><[EMAIL PROTECTED]> >Sent: Monday, November 20, 2000 11:45 AM >Subject: RE: !H !H !H!H > > >This is where I am getting my info.. > >Ref: chapter 8 of Intro to Cisco Router Configuration >pages 229-230 > >It says responses to trace command include: >!H The probe was rceived by the router, but not forwarded, usually due to >an >access list. >PThe protocol was unreachable >NThe network was unreachable >UThe port was unreachable >*Timout > >Jennifer Cribbs >[EMAIL PROTECTED] > > > > > >>= Original Message From "Rossetti, Stan" <[EMAIL PROTECTED]> >= >>Are you sure? Page 1163 of Cisco IOS Configuration Fundamentals states >that >>the character A signifies that the destination is "Administratively >>Unreachable. Usually, this output indicates that an access list is >blocking >>traffic." >> >>-Original Message- >>From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] >>Sent: Monday, November 20, 2000 1:13 PM >>To: cisco; [EMAIL PROTECTED] >>Subject: RE: !H !H !H!H >> >> >>On the traceroute command: >> >>!H is returned 3 times if an access list prevents a router from forwarding >>the >>packet to the HOST. The 'trace' command is used to determine the route >>taken >>to a remote host. All the hops are shown as the trace probe moves toward >>the >>destination. Three probes are issued. The response time of each probe >will >> >>be displayed if successful. >> >>The trace command returns a N if the network is unreachable. >>The P is the response if the protocol is unreachable. >>An * is a timeout. >>!H is the return for what I said above but it is regarding a traceroute >>command, >>and not a ping. >> >>Jennifer Cribbs >>[EMAIL PROTECTED] >> >> >> >>>= Original Message From "Rossetti, Stan" <[EMAIL PROTECTED]> >>= >>>I thought !A meant this path is blocked by an access list. >>> >>>-Original Message- >>>From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] >>>Sent: Monday, November 20, 2000 12:13 PM >>>To: [EMAIL PROTECTED] >>>Subject: RE: !H not a complete answer >>> >>> >>>This response is returned when an access list somewhere along the path >>>prevents a router from forwarding a packet to the HOST. >>> >>>and that is correct. >>> >>>Jennifer Cribbs >>>[EMAIL PROTECTED] >>> >>> >>>= Original Message From "Croyle, James" <[EMAIL PROTECTED]> >= >>>http://www.cisco.com/warp/public/112/chapter7.htm >>> >>>I think you have a routing loop as is described here. Ping from several >>>stations and map it out. >>> >>>Jim >>> >>> >>>-Original Message- >>>From: Miller, Nathan (AZ15) >>>To: Richard Bosire; Jason yee >>>Cc: John Huston; [EMAIL PROTECTED] >>>Sent: 11/20/00 11:15 AM >>>Subject: RE: !H >>> >>>Does it meas that the destination NETWORK is unreachable or the >>>destination >>>HOST?? >>> >>>-Original Message- >>>From: Richard Bosire [mailto:[EMAIL PROTECTED]] >>>Sent: Monday, November 20, 2000 8:01 AM >>>To: Jason yee >>>Cc: John Huston; [EMAIL PROTECTED] >>>Subject: Re: !H >>> >>> >>>destination unreachable i.e not path to the destination network >>> >>>Jason yee wrote: >>> >>> hi anyone knows what does the symbol !H means in &g
RE: !H !H !H!H
I found a ref regarding !A a few minutes ago. It is nearly exactly the same as what I had thought about the !H. Is one a misprint maybe, and if not, why do they have two of them, and what is the purpose of two returns that could be the same thing? The only souce I can find on this is on the cisco command ref on-line under troubleshooting commands. It states that !A is returned when a network is administratively unreachable due to an access list. I found that a few minutes ago and Donald I forwarded that to you. However, it implies in my router book the exact same thing regarding !H. What it actually says there, (cisco press) is that the probe is received but not forwarded due to an access list, where !H is received. What is the difference between the two? Jennifer Cribbs [EMAIL PROTECTED] >= Original Message From "Donald B Johnson Jr" <[EMAIL PROTECTED]> = >jennifer when does a trace rt return an A >Duck >- Original Message - >From: Jennifer Cribbs <[EMAIL PROTECTED]> >To: cisco <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> >Sent: Monday, November 20, 2000 11:13 AM >Subject: RE: !H !H !H!H > > >On the traceroute command: > >!H is returned 3 times if an access list prevents a router from forwarding >the >packet to the HOST. The 'trace' command is used to determine the route >taken >to a remote host. All the hops are shown as the trace probe moves toward >the >destination. Three probes are issued. The response time of each probe will >be displayed if successful. > >The trace command returns a N if the network is unreachable. >The P is the response if the protocol is unreachable. >An * is a timeout. >!H is the return for what I said above but it is regarding a traceroute >command, >and not a ping. > >Jennifer Cribbs >[EMAIL PROTECTED] > > > >>= Original Message From "Rossetti, Stan" <[EMAIL PROTECTED]> >= >>I thought !A meant this path is blocked by an access list. >> >>-Original Message- >>From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] >>Sent: Monday, November 20, 2000 12:13 PM >>To: [EMAIL PROTECTED] >>Subject: RE: !H not a complete answer >> >> >>This response is returned when an access list somewhere along the path >>prevents a router from forwarding a packet to the HOST. >> >>and that is correct. >> >>Jennifer Cribbs >>[EMAIL PROTECTED] >> >> >>>= Original Message From "Croyle, James" <[EMAIL PROTECTED]> = >>>http://www.cisco.com/warp/public/112/chapter7.htm >>> >>>I think you have a routing loop as is described here. Ping from several >>>stations and map it out. >>> >>>Jim >>> >>> >>>-Original Message- >>>From: Miller, Nathan (AZ15) >>>To: Richard Bosire; Jason yee >>>Cc: John Huston; [EMAIL PROTECTED] >>>Sent: 11/20/00 11:15 AM >>>Subject: RE: !H >>> >>>Does it meas that the destination NETWORK is unreachable or the >>>destination >>>HOST?? >>> >>>-Original Message- >>>From: Richard Bosire [mailto:[EMAIL PROTECTED]] >>>Sent: Monday, November 20, 2000 8:01 AM >>>To: Jason yee >>>Cc: John Huston; [EMAIL PROTECTED] >>>Subject: Re: !H >>> >>> >>>destination unreachable i.e not path to the destination network >>> >>>Jason yee wrote: >>> >>> hi anyone knows what does the symbol !H means in >>> traceroute results >>> >>> __ >>> Do You Yahoo!? >>> Yahoo! Calendar - Get organized for the holidays! >>> http://calendar.yahoo.com/ >>> >>> _ >>> FAQ, list archives, and subscription info: >>>http://www.groupstudy.com/list/cisco.html >>> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >>> >>>-- >>>___ >>>«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤ >>> >>>Richard Bosire >>>Network Engineer CCNA,CCSE >>>AfricaOnline (k) Ltd >>>tel +254-2-243775 fax +254-2-243762 >>>http://www.africaonline.co.ke >>> >>> >>>_ >>>FAQ, list archives, and subscription info: >>>http://www.groupstudy.com/list/cisco.html >>>Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >>> >>>_ >>>FAQ, list ar
RE: !H not a complete answer found it, but confused........help chuck!!
This may sound silly, but has anyone just tried to run the various scenarios (tracing/pinging w/host physically off, access list applied, etc.) in a simple lab with various versions of the IOS in an attempt to discern a consistent pattern? or we can go get in line at the Fla Sup Ct :-) -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Jennifer Cribbs Sent: Monday, November 20, 2000 3:52 PM To: Rossetti, Stan; cisco Subject: RE: !H not a complete answer found it, but confusedhelp chuck!! First of all, this is very confusing. I have in front of me right now two very different resouces regarding !A and !H. The first is the one I sent and what I learned in school and is the correct answer on exams that I have taken. That was the ref I sent to 'intro to cisco router configuration' that i sent earlier from pages 230, chapter 9, where it states !H means blocked acces to host due to access list. Now, the rest i this is a printing of what i got from cisco command ref on-line and it says exactly what you told me, which was the !A meant a problem with an access list that was adminstratively unreachable. What is really strange about this, it that these two conflicting statements, one saying !H is a reject due to access lists and the other !A means rejected due to access lists are both ciso ref's. My book is cisco press. So what's up with that Did someone goof and maybe a type-o, or are they both correct? As I sit and comptemplate this, the reading in the cisco book, says !H is sent when the PROBE IS RECEIVED but blocked due to an access list. and on line- !A is sent when administratively unreachable due to an access list. !H is sent when host is unreachable. Are these two things the same and one, which I doubt, and if that is the case, what is the differences between the two. I would really like to know and need some imput. Chuck The rest of this I did not write: I copied it from on-line under cisco command ref troubleshooting commands under traceroute. = Table 118: IP Trace Text Characters Char Description nn msec For each node, the round-trip time in milliseconds for the specified number of probes. * The probe timed out. ? Unknown packet type. A Administratively unreachable. Usually, this output indicates that an access list is blocking traffic. H Host unreachable. N Network unreachable. P Protocol unreachable. Q Source quench. U Port unreachable. == Thanks, Jennifer Cribbs [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: !H !H !H!H
jennifer when does a trace rt return an A Duck - Original Message - From: Jennifer Cribbs <[EMAIL PROTECTED]> To: cisco <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Monday, November 20, 2000 11:13 AM Subject: RE: !H !H !H!H On the traceroute command: !H is returned 3 times if an access list prevents a router from forwarding the packet to the HOST. The 'trace' command is used to determine the route taken to a remote host. All the hops are shown as the trace probe moves toward the destination. Three probes are issued. The response time of each probe will be displayed if successful. The trace command returns a N if the network is unreachable. The P is the response if the protocol is unreachable. An * is a timeout. !H is the return for what I said above but it is regarding a traceroute command, and not a ping. Jennifer Cribbs [EMAIL PROTECTED] >= Original Message From "Rossetti, Stan" <[EMAIL PROTECTED]> = >I thought !A meant this path is blocked by an access list. > >-Original Message- >From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] >Sent: Monday, November 20, 2000 12:13 PM >To: [EMAIL PROTECTED] >Subject: RE: !H not a complete answer > > >This response is returned when an access list somewhere along the path >prevents a router from forwarding a packet to the HOST. > >and that is correct. > >Jennifer Cribbs >[EMAIL PROTECTED] > > >>= Original Message From "Croyle, James" <[EMAIL PROTECTED]> = >>http://www.cisco.com/warp/public/112/chapter7.htm >> >>I think you have a routing loop as is described here. Ping from several >>stations and map it out. >> >>Jim >> >> >>-Original Message- >>From: Miller, Nathan (AZ15) >>To: Richard Bosire; Jason yee >>Cc: John Huston; [EMAIL PROTECTED] >>Sent: 11/20/00 11:15 AM >>Subject: RE: !H >> >>Does it meas that the destination NETWORK is unreachable or the >>destination >>HOST?? >> >>-Original Message- >>From: Richard Bosire [mailto:[EMAIL PROTECTED]] >>Sent: Monday, November 20, 2000 8:01 AM >>To: Jason yee >>Cc: John Huston; [EMAIL PROTECTED] >>Subject: Re: !H >> >> >>destination unreachable i.e not path to the destination network >> >>Jason yee wrote: >> >>> hi anyone knows what does the symbol !H means in >>> traceroute results >>> >>> __ >>> Do You Yahoo!? >>> Yahoo! Calendar - Get organized for the holidays! >>> http://calendar.yahoo.com/ >>> >>> _ >>> FAQ, list archives, and subscription info: >>http://www.groupstudy.com/list/cisco.html >>> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >> >>-- >>___ >>«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤ >> >>Richard Bosire >>Network Engineer CCNA,CCSE >>AfricaOnline (k) Ltd >>tel +254-2-243775 fax +254-2-243762 >>http://www.africaonline.co.ke >> >> >>_ >>FAQ, list archives, and subscription info: >>http://www.groupstudy.com/list/cisco.html >>Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >> >>_ >>FAQ, list archives, and subscription info: >>http://www.groupstudy.com/list/cisco.html >>Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >> >>_ >>FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >>Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: !H not a complete answer found it, but confused........help chuck!!
First of all, this is very confusing. I have in front of me right now two very different resouces regarding !A and !H. The first is the one I sent and what I learned in school and is the correct answer on exams that I have taken. That was the ref I sent to 'intro to cisco router configuration' that i sent earlier from pages 230, chapter 9, where it states !H means blocked acces to host due to access list. Now, the rest i this is a printing of what i got from cisco command ref on-line and it says exactly what you told me, which was the !A meant a problem with an access list that was adminstratively unreachable. What is really strange about this, it that these two conflicting statements, one saying !H is a reject due to access lists and the other !A means rejected due to access lists are both ciso ref's. My book is cisco press. So what's up with that Did someone goof and maybe a type-o, or are they both correct? As I sit and comptemplate this, the reading in the cisco book, says !H is sent when the PROBE IS RECEIVED but blocked due to an access list. and on line- !A is sent when administratively unreachable due to an access list. !H is sent when host is unreachable. Are these two things the same and one, which I doubt, and if that is the case, what is the differences between the two. I would really like to know and need some imput. Chuck The rest of this I did not write: I copied it from on-line under cisco command ref troubleshooting commands under traceroute. = Table 118: IP Trace Text Characters Char Description nn msec For each node, the round-trip time in milliseconds for the specified number of probes. * The probe timed out. ? Unknown packet type. A Administratively unreachable. Usually, this output indicates that an access list is blocking traffic. H Host unreachable. N Network unreachable. P Protocol unreachable. Q Source quench. U Port unreachable. == Thanks, Jennifer Cribbs [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: !H !H !H!H
Even if this was correct you cannot simply by getting an !h say that this is from an access-list. There are many reasons for a host unreachable message. Also, from most workstations (Windows that is), you will simply get a timeout and neither !A or !h from packets being denied by an access-list. - Original Message - From: "Rossetti, Stan" <[EMAIL PROTECTED]> To: "'Jennifer Cribbs'" <[EMAIL PROTECTED]>; "cisco" <[EMAIL PROTECTED]>; "Rossetti, Stan" <[EMAIL PROTECTED]> Sent: Monday, November 20, 2000 2:23 PM Subject: RE: !H !H !H!H Are you sure? Page 1163 of Cisco IOS Configuration Fundamentals states that the character A signifies that the destination is "Administratively Unreachable. Usually, this output indicates that an access list is blocking traffic." -Original Message- From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] Sent: Monday, November 20, 2000 1:13 PM To: cisco; [EMAIL PROTECTED] Subject: RE: !H !H !H!H On the traceroute command: !H is returned 3 times if an access list prevents a router from forwarding the packet to the HOST. The 'trace' command is used to determine the route taken to a remote host. All the hops are shown as the trace probe moves toward the destination. Three probes are issued. The response time of each probe will be displayed if successful. The trace command returns a N if the network is unreachable. The P is the response if the protocol is unreachable. An * is a timeout. !H is the return for what I said above but it is regarding a traceroute command, and not a ping. Jennifer Cribbs [EMAIL PROTECTED] >= Original Message From "Rossetti, Stan" <[EMAIL PROTECTED]> = >I thought !A meant this path is blocked by an access list. > >-Original Message- >From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] >Sent: Monday, November 20, 2000 12:13 PM >To: [EMAIL PROTECTED] >Subject: RE: !H not a complete answer > > >This response is returned when an access list somewhere along the path >prevents a router from forwarding a packet to the HOST. > >and that is correct. > >Jennifer Cribbs >[EMAIL PROTECTED] > > >>= Original Message From "Croyle, James" <[EMAIL PROTECTED]> = >>http://www.cisco.com/warp/public/112/chapter7.htm >> >>I think you have a routing loop as is described here. Ping from several >>stations and map it out. >> >>Jim >> >> >>-Original Message- >>From: Miller, Nathan (AZ15) >>To: Richard Bosire; Jason yee >>Cc: John Huston; [EMAIL PROTECTED] >>Sent: 11/20/00 11:15 AM >>Subject: RE: !H >> >>Does it meas that the destination NETWORK is unreachable or the >>destination >>HOST?? >> >>-Original Message- >>From: Richard Bosire [mailto:[EMAIL PROTECTED]] >>Sent: Monday, November 20, 2000 8:01 AM >>To: Jason yee >>Cc: John Huston; [EMAIL PROTECTED] >>Subject: Re: !H >> >> >>destination unreachable i.e not path to the destination network >> >>Jason yee wrote: >> >>> hi anyone knows what does the symbol !H means in >>> traceroute results >>> >>> __ >>> Do You Yahoo!? >>> Yahoo! Calendar - Get organized for the holidays! >>> http://calendar.yahoo.com/ >>> >>> _ >>> FAQ, list archives, and subscription info: >>http://www.groupstudy.com/list/cisco.html >>> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >> >>-- >>___ >>«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤ >> >>Richard Bosire >>Network Engineer CCNA,CCSE >>AfricaOnline (k) Ltd >>tel +254-2-243775 fax +254-2-243762 >>http://www.africaonline.co.ke >> >> >>_ >>FAQ, list archives, and subscription info: >>http://www.groupstudy.com/list/cisco.html >>Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >> >>_ >>FAQ, list archives, and subscription info: >>http://www.groupstudy.com/list/cisco.html >>Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >> >>_ >>FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >>Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: !H !H !H!H
!H simply means that the host is unreachable. Whether this is because of an access list or that the host is disconnected or turned off is left to the imagination of the person receiving the !H notification. Odds are that unless you have physical access to the host in question you will not ever learn why the host was unreachable. Gragg Vaill NOS Contractor Sprint ION NOC Kansas City, Ks. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Jennifer Cribbs Sent: Monday, November 20, 2000 1:46 PM To: Rossetti, Stan; cisco Subject: RE: !H !H !H!H This is where I am getting my info.. Ref: chapter 8 of Intro to Cisco Router Configuration pages 229-230 It says responses to trace command include: !H The probe was rceived by the router, but not forwarded, usually due to an access list. PThe protocol was unreachable NThe network was unreachable UThe port was unreachable *Timout Jennifer Cribbs [EMAIL PROTECTED] >= Original Message From "Rossetti, Stan" <[EMAIL PROTECTED]> = >Are you sure? Page 1163 of Cisco IOS Configuration Fundamentals states that >the character A signifies that the destination is "Administratively >Unreachable. Usually, this output indicates that an access list is blocking >traffic." > >-Original Message- >From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] >Sent: Monday, November 20, 2000 1:13 PM >To: cisco; [EMAIL PROTECTED] >Subject: RE: !H !H !H!H > > >On the traceroute command: > >!H is returned 3 times if an access list prevents a router from forwarding >the >packet to the HOST. The 'trace' command is used to determine the route >taken >to a remote host. All the hops are shown as the trace probe moves toward >the >destination. Three probes are issued. The response time of each probe will > >be displayed if successful. > >The trace command returns a N if the network is unreachable. >The P is the response if the protocol is unreachable. >An * is a timeout. >!H is the return for what I said above but it is regarding a traceroute >command, >and not a ping. > >Jennifer Cribbs >[EMAIL PROTECTED] > > > >>= Original Message From "Rossetti, Stan" <[EMAIL PROTECTED]> >= >>I thought !A meant this path is blocked by an access list. >> >>-Original Message- >>From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] >>Sent: Monday, November 20, 2000 12:13 PM >>To: [EMAIL PROTECTED] >>Subject: RE: !H not a complete answer >> >> >>This response is returned when an access list somewhere along the path >>prevents a router from forwarding a packet to the HOST. >> >>and that is correct. >> >>Jennifer Cribbs >>[EMAIL PROTECTED] >> >> >>>= Original Message From "Croyle, James" <[EMAIL PROTECTED]> = >>>http://www.cisco.com/warp/public/112/chapter7.htm >>> >>>I think you have a routing loop as is described here. Ping from several >>>stations and map it out. >>> >>>Jim >>> >>> >>>-Original Message- >>>From: Miller, Nathan (AZ15) >>>To: Richard Bosire; Jason yee >>>Cc: John Huston; [EMAIL PROTECTED] >>>Sent: 11/20/00 11:15 AM >>>Subject: RE: !H >>> >>>Does it meas that the destination NETWORK is unreachable or the >>>destination >>>HOST?? >>> >>>-Original Message- >>>From: Richard Bosire [mailto:[EMAIL PROTECTED]] >>>Sent: Monday, November 20, 2000 8:01 AM >>>To: Jason yee >>>Cc: John Huston; [EMAIL PROTECTED] >>>Subject: Re: !H >>> >>> >>>destination unreachable i.e not path to the destination network >>> >>>Jason yee wrote: >>> >>> hi anyone knows what does the symbol !H means in >>> traceroute results >>> >>> __ >>> Do You Yahoo!? >>> Yahoo! Calendar - Get organized for the holidays! >>> http://calendar.yahoo.com/ >>> >>> _ >>> FAQ, list archives, and subscription info: >>>http://www.groupstudy.com/list/cisco.html >>> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >>> >>>-- >>>___ >>>«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤ >>> >>>Richard Bosire >>>Network Engineer CCNA,CCSE >>>AfricaOnline (k) Ltd >>>tel +254-2-243775 fax +254-2-243762 >>>http://www.africaonline.co.ke >&g
RE: !H
Here are some of the error codes you may see when pinging or doing a traceroute: *---The probe timed out ?---Unknown packet type A---Administratively blocked (i.e. access list) Q---Source quench P---Protocol unreachable N---Network unreachable U---Port unreachable H---Host unreachable H means host unreachable. Jumping to the conclusion that there's a routing problem isn't logical (though I know that what's the Tech Note document says.) The host could be turned off. A host unreachable happens when the last-hop router tries to ARP for the device and doesn't get a response. They really watered down the Internetworking Troubleshooting Guide in that Tech Note. I recommend reading the real one here: http://www.cisco.com/univercd/cc/td/doc/cisintwk/itg_v1/tr1907.htm Priscilla At 12:01 PM 11/20/00, Croyle, James wrote: >http://www.cisco.com/warp/public/112/chapter7.htm > >I think you have a routing loop as is described here. Ping from several >stations and map it out. > >Jim > > >-Original Message- >From: Miller, Nathan (AZ15) >To: Richard Bosire; Jason yee >Cc: John Huston; [EMAIL PROTECTED] >Sent: 11/20/00 11:15 AM >Subject: RE: !H > >Does it meas that the destination NETWORK is unreachable or the >destination >HOST?? > >-Original Message- >From: Richard Bosire [mailto:[EMAIL PROTECTED]] >Sent: Monday, November 20, 2000 8:01 AM >To: Jason yee >Cc: John Huston; [EMAIL PROTECTED] >Subject: Re: !H > > >destination unreachable i.e not path to the destination network > >Jason yee wrote: > > > hi anyone knows what does the symbol !H means in > > traceroute results > > > > __ > > Do You Yahoo!? > > Yahoo! Calendar - Get organized for the holidays! > > http://calendar.yahoo.com/ > > > > _ > > FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > >-- >___ >«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤ > >Richard Bosire >Network Engineer CCNA,CCSE >AfricaOnline (k) Ltd >tel +254-2-243775 fax +254-2-243762 >http://www.africaonline.co.ke > Priscilla Oppenheimer http://www.priscilla.com _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: !H not a complete answer
wouldn't that be an A response Duck - Original Message - From: Jennifer Cribbs <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, November 20, 2000 10:12 AM Subject: RE: !H not a complete answer This response is returned when an access list somewhere along the path prevents a router from forwarding a packet to the HOST. and that is correct. Jennifer Cribbs [EMAIL PROTECTED] >= Original Message From "Croyle, James" <[EMAIL PROTECTED]> = >http://www.cisco.com/warp/public/112/chapter7.htm > >I think you have a routing loop as is described here. Ping from several >stations and map it out. > >Jim > > >-Original Message- >From: Miller, Nathan (AZ15) >To: Richard Bosire; Jason yee >Cc: John Huston; [EMAIL PROTECTED] >Sent: 11/20/00 11:15 AM >Subject: RE: !H > >Does it meas that the destination NETWORK is unreachable or the >destination >HOST?? > >-Original Message- >From: Richard Bosire [mailto:[EMAIL PROTECTED]] >Sent: Monday, November 20, 2000 8:01 AM >To: Jason yee >Cc: John Huston; [EMAIL PROTECTED] >Subject: Re: !H > > >destination unreachable i.e not path to the destination network > >Jason yee wrote: > >> hi anyone knows what does the symbol !H means in >> traceroute results >> >> __ >> Do You Yahoo!? >> Yahoo! Calendar - Get organized for the holidays! >> http://calendar.yahoo.com/ >> >> _ >> FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > >-- >___ >«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤ > >Richard Bosire >Network Engineer CCNA,CCSE >AfricaOnline (k) Ltd >tel +254-2-243775 fax +254-2-243762 >http://www.africaonline.co.ke > > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > >_ >FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: !H !H !H!H
This is where I am getting my info.. Ref: chapter 8 of Intro to Cisco Router Configuration pages 229-230 It says responses to trace command include: !H The probe was rceived by the router, but not forwarded, usually due to an access list. PThe protocol was unreachable NThe network was unreachable UThe port was unreachable *Timout Jennifer Cribbs [EMAIL PROTECTED] >= Original Message From "Rossetti, Stan" <[EMAIL PROTECTED]> = >Are you sure? Page 1163 of Cisco IOS Configuration Fundamentals states that >the character A signifies that the destination is "Administratively >Unreachable. Usually, this output indicates that an access list is blocking >traffic." > >-Original Message- >From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] >Sent: Monday, November 20, 2000 1:13 PM >To: cisco; [EMAIL PROTECTED] >Subject: RE: !H !H !H!H > > >On the traceroute command: > >!H is returned 3 times if an access list prevents a router from forwarding >the >packet to the HOST. The 'trace' command is used to determine the route >taken >to a remote host. All the hops are shown as the trace probe moves toward >the >destination. Three probes are issued. The response time of each probe will > >be displayed if successful. > >The trace command returns a N if the network is unreachable. >The P is the response if the protocol is unreachable. >An * is a timeout. >!H is the return for what I said above but it is regarding a traceroute >command, >and not a ping. > >Jennifer Cribbs >[EMAIL PROTECTED] > > > >>= Original Message From "Rossetti, Stan" <[EMAIL PROTECTED]> >= >>I thought !A meant this path is blocked by an access list. >> >>-Original Message- >>From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] >>Sent: Monday, November 20, 2000 12:13 PM >>To: [EMAIL PROTECTED] >>Subject: RE: !H not a complete answer >> >> >>This response is returned when an access list somewhere along the path >>prevents a router from forwarding a packet to the HOST. >> >>and that is correct. >> >>Jennifer Cribbs >>[EMAIL PROTECTED] >> >> >>>= Original Message From "Croyle, James" <[EMAIL PROTECTED]> = >>>http://www.cisco.com/warp/public/112/chapter7.htm >>> >>>I think you have a routing loop as is described here. Ping from several >>>stations and map it out. >>> >>>Jim >>> >>> >>>-Original Message- >>>From: Miller, Nathan (AZ15) >>>To: Richard Bosire; Jason yee >>>Cc: John Huston; [EMAIL PROTECTED] >>>Sent: 11/20/00 11:15 AM >>>Subject: RE: !H >>> >>>Does it meas that the destination NETWORK is unreachable or the >>>destination >>>HOST?? >>> >>>-Original Message- >>>From: Richard Bosire [mailto:[EMAIL PROTECTED]] >>>Sent: Monday, November 20, 2000 8:01 AM >>>To: Jason yee >>>Cc: John Huston; [EMAIL PROTECTED] >>>Subject: Re: !H >>> >>> >>>destination unreachable i.e not path to the destination network >>> >>>Jason yee wrote: >>> >>> hi anyone knows what does the symbol !H means in >>> traceroute results >>> >>> __ >>> Do You Yahoo!? >>> Yahoo! Calendar - Get organized for the holidays! >>> http://calendar.yahoo.com/ >>> >>> _ >>> FAQ, list archives, and subscription info: >>>http://www.groupstudy.com/list/cisco.html >>> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >>> >>>-- >>>___ >>>«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤ >>> >>>Richard Bosire >>>Network Engineer CCNA,CCSE >>>AfricaOnline (k) Ltd >>>tel +254-2-243775 fax +254-2-243762 >>>http://www.africaonline.co.ke >>> >>> >>>_ >>>FAQ, list archives, and subscription info: >>>http://www.groupstudy.com/list/cisco.html >>>Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >>> >>>_ >>>FAQ, list archives, and subscription info: >>>http://www.groupstudy.com/list/cisco.html >>>Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >>> >>>_ >>>FAQ, list archives, and subscription info: >>http://www.groupstudy.com/list/cisco.html >>>Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >> >>_ >>FAQ, list archives, and subscription info: >>http://www.groupstudy.com/list/cisco.html >>Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: !H not a complete answer
I have always seen the !H replies when there is not a route to the destination and when there is an access-list blocking the router then the reply is !A using traceroute. -Original Message- From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] Sent: Monday, November 20, 2000 12:57 PM To: [EMAIL PROTECTED] Subject: RE: !H not a complete answer I thought the original question was in regard to traceroute results and not ping. Look at the original question at the bottom of this page. [EMAIL PROTECTED] >= Original Message From "Phillip Heller" <[EMAIL PROTECTED]> = >From cisco: > >"If the router receives a datagram which it is unable to deliver to it's >ultimate destination because it knows of no route to the destination >address, it replies to the originator of that datagram with an ICMP Host >Unreachable message." > >An access-list denying icmp echo-requests will simply not permit the >forwarding of icmp echo-requests. From the use of ping, this would be >observed as timeouts rather than "Host Unreachable" or "!H". > >--phil > >| -Original Message- >| From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of >| Jennifer Cribbs >| Sent: Monday, November 20, 2000 1:13 PM >| To: [EMAIL PROTECTED] >| Subject: RE: !H not a complete answer >| >| >| This response is returned when an access list somewhere along the path >| prevents a router from forwarding a packet to the HOST. >| >| and that is correct. >| >| Jennifer Cribbs >| [EMAIL PROTECTED] >| >| >| >= Original Message From "Croyle, James" >| <[EMAIL PROTECTED]> = >| >http://www.cisco.com/warp/public/112/chapter7.htm >| > >| >I think you have a routing loop as is described here. Ping from several >| >stations and map it out. >| > >| >Jim >| > >| > >| >-Original Message- >| >From: Miller, Nathan (AZ15) >| >To: Richard Bosire; Jason yee >| >Cc: John Huston; [EMAIL PROTECTED] >| >Sent: 11/20/00 11:15 AM >| >Subject: RE: !H >| > >| >Does it meas that the destination NETWORK is unreachable or the >| >destination >| >HOST?? >| > >| >-Original Message- >| >From: Richard Bosire [mailto:[EMAIL PROTECTED]] >| >Sent: Monday, November 20, 2000 8:01 AM >| >To: Jason yee >| >Cc: John Huston; [EMAIL PROTECTED] >| >Subject: Re: !H >| > >| > >| >destination unreachable i.e not path to the destination network >| > >| >Jason yee wrote: >| > >| >> hi anyone knows what does the symbol !H means in >| >> traceroute results >| >> >| >> __ >| >> Do You Yahoo!? >| >> Yahoo! Calendar - Get organized for the holidays! >| >> http://calendar.yahoo.com/ >| >> >| >> _ >| >> FAQ, list archives, and subscription info: >| >http://www.groupstudy.com/list/cisco.html >| >> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >| > >| >-- >| >___ >| >«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤ >| > >| >Richard Bosire >| >Network Engineer CCNA,CCSE >| >AfricaOnline (k) Ltd >| >tel +254-2-243775 fax +254-2-243762 >| >http://www.africaonline.co.ke >| > >| > >| >_ >| >FAQ, list archives, and subscription info: >| >http://www.groupstudy.com/list/cisco.html >| >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >| > >| >_ >| >FAQ, list archives, and subscription info: >| >http://www.groupstudy.com/list/cisco.html >| >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >| > >| >_ >| >FAQ, list archives, and subscription info: >| http://www.groupstudy.com/list/cisco.html >| >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >| >| _ >| FAQ, list archives, and subscription info: >| http://www.groupstudy.com/list/cisco.html >| Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >| _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: !H not a complete answer
I thought the original question was in regard to traceroute results and not ping. Look at the original question at the bottom of this page. [EMAIL PROTECTED] >= Original Message From "Phillip Heller" <[EMAIL PROTECTED]> = >From cisco: > >"If the router receives a datagram which it is unable to deliver to it's >ultimate destination because it knows of no route to the destination >address, it replies to the originator of that datagram with an ICMP Host >Unreachable message." > >An access-list denying icmp echo-requests will simply not permit the >forwarding of icmp echo-requests. From the use of ping, this would be >observed as timeouts rather than "Host Unreachable" or "!H". > >--phil > >| -Original Message- >| From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of >| Jennifer Cribbs >| Sent: Monday, November 20, 2000 1:13 PM >| To: [EMAIL PROTECTED] >| Subject: RE: !H not a complete answer >| >| >| This response is returned when an access list somewhere along the path >| prevents a router from forwarding a packet to the HOST. >| >| and that is correct. >| >| Jennifer Cribbs >| [EMAIL PROTECTED] >| >| >| >= Original Message From "Croyle, James" >| <[EMAIL PROTECTED]> = >| >http://www.cisco.com/warp/public/112/chapter7.htm >| > >| >I think you have a routing loop as is described here. Ping from several >| >stations and map it out. >| > >| >Jim >| > >| > >| >-Original Message- >| >From: Miller, Nathan (AZ15) >| >To: Richard Bosire; Jason yee >| >Cc: John Huston; [EMAIL PROTECTED] >| >Sent: 11/20/00 11:15 AM >| >Subject: RE: !H >| > >| >Does it meas that the destination NETWORK is unreachable or the >| >destination >| >HOST?? >| > >| >-Original Message- >| >From: Richard Bosire [mailto:[EMAIL PROTECTED]] >| >Sent: Monday, November 20, 2000 8:01 AM >| >To: Jason yee >| >Cc: John Huston; [EMAIL PROTECTED] >| >Subject: Re: !H >| > >| > >| >destination unreachable i.e not path to the destination network >| > >| >Jason yee wrote: >| > >| >> hi anyone knows what does the symbol !H means in >| >> traceroute results >| >> >| >> __ >| >> Do You Yahoo!? >| >> Yahoo! Calendar - Get organized for the holidays! >| >> http://calendar.yahoo.com/ >| >> >| >> _ >| >> FAQ, list archives, and subscription info: >| >http://www.groupstudy.com/list/cisco.html >| >> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >| > >| >-- >| >___ >| >«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤ >| > >| >Richard Bosire >| >Network Engineer CCNA,CCSE >| >AfricaOnline (k) Ltd >| >tel +254-2-243775 fax +254-2-243762 >| >http://www.africaonline.co.ke >| > >| > >| >_ >| >FAQ, list archives, and subscription info: >| >http://www.groupstudy.com/list/cisco.html >| >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >| > >| >_ >| >FAQ, list archives, and subscription info: >| >http://www.groupstudy.com/list/cisco.html >| >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >| > >| >_ >| >FAQ, list archives, and subscription info: >| http://www.groupstudy.com/list/cisco.html >| >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >| >| _ >| FAQ, list archives, and subscription info: >| http://www.groupstudy.com/list/cisco.html >| Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >| _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: !H !H !H!H
Are you sure? Page 1163 of Cisco IOS Configuration Fundamentals states that the character A signifies that the destination is "Administratively Unreachable. Usually, this output indicates that an access list is blocking traffic." -Original Message- From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] Sent: Monday, November 20, 2000 1:13 PM To: cisco; [EMAIL PROTECTED] Subject: RE: !H !H !H!H On the traceroute command: !H is returned 3 times if an access list prevents a router from forwarding the packet to the HOST. The 'trace' command is used to determine the route taken to a remote host. All the hops are shown as the trace probe moves toward the destination. Three probes are issued. The response time of each probe will be displayed if successful. The trace command returns a N if the network is unreachable. The P is the response if the protocol is unreachable. An * is a timeout. !H is the return for what I said above but it is regarding a traceroute command, and not a ping. Jennifer Cribbs [EMAIL PROTECTED] >= Original Message From "Rossetti, Stan" <[EMAIL PROTECTED]> = >I thought !A meant this path is blocked by an access list. > >-Original Message- >From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] >Sent: Monday, November 20, 2000 12:13 PM >To: [EMAIL PROTECTED] >Subject: RE: !H not a complete answer > > >This response is returned when an access list somewhere along the path >prevents a router from forwarding a packet to the HOST. > >and that is correct. > >Jennifer Cribbs >[EMAIL PROTECTED] > > >>= Original Message From "Croyle, James" <[EMAIL PROTECTED]> = >>http://www.cisco.com/warp/public/112/chapter7.htm >> >>I think you have a routing loop as is described here. Ping from several >>stations and map it out. >> >>Jim >> >> >>-Original Message- >>From: Miller, Nathan (AZ15) >>To: Richard Bosire; Jason yee >>Cc: John Huston; [EMAIL PROTECTED] >>Sent: 11/20/00 11:15 AM >>Subject: RE: !H >> >>Does it meas that the destination NETWORK is unreachable or the >>destination >>HOST?? >> >>-Original Message- >>From: Richard Bosire [mailto:[EMAIL PROTECTED]] >>Sent: Monday, November 20, 2000 8:01 AM >>To: Jason yee >>Cc: John Huston; [EMAIL PROTECTED] >>Subject: Re: !H >> >> >>destination unreachable i.e not path to the destination network >> >>Jason yee wrote: >> >>> hi anyone knows what does the symbol !H means in >>> traceroute results >>> >>> __ >>> Do You Yahoo!? >>> Yahoo! Calendar - Get organized for the holidays! >>> http://calendar.yahoo.com/ >>> >>> _ >>> FAQ, list archives, and subscription info: >>http://www.groupstudy.com/list/cisco.html >>> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >> >>-- >>___ >>«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤ >> >>Richard Bosire >>Network Engineer CCNA,CCSE >>AfricaOnline (k) Ltd >>tel +254-2-243775 fax +254-2-243762 >>http://www.africaonline.co.ke >> >> >>_ >>FAQ, list archives, and subscription info: >>http://www.groupstudy.com/list/cisco.html >>Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >> >>_ >>FAQ, list archives, and subscription info: >>http://www.groupstudy.com/list/cisco.html >>Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >> >>_ >>FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >>Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: !H !H !H!H
On the traceroute command: !H is returned 3 times if an access list prevents a router from forwarding the packet to the HOST. The 'trace' command is used to determine the route taken to a remote host. All the hops are shown as the trace probe moves toward the destination. Three probes are issued. The response time of each probe will be displayed if successful. The trace command returns a N if the network is unreachable. The P is the response if the protocol is unreachable. An * is a timeout. !H is the return for what I said above but it is regarding a traceroute command, and not a ping. Jennifer Cribbs [EMAIL PROTECTED] >= Original Message From "Rossetti, Stan" <[EMAIL PROTECTED]> = >I thought !A meant this path is blocked by an access list. > >-Original Message- >From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] >Sent: Monday, November 20, 2000 12:13 PM >To: [EMAIL PROTECTED] >Subject: RE: !H not a complete answer > > >This response is returned when an access list somewhere along the path >prevents a router from forwarding a packet to the HOST. > >and that is correct. > >Jennifer Cribbs >[EMAIL PROTECTED] > > >>= Original Message From "Croyle, James" <[EMAIL PROTECTED]> = >>http://www.cisco.com/warp/public/112/chapter7.htm >> >>I think you have a routing loop as is described here. Ping from several >>stations and map it out. >> >>Jim >> >> >>-Original Message- >>From: Miller, Nathan (AZ15) >>To: Richard Bosire; Jason yee >>Cc: John Huston; [EMAIL PROTECTED] >>Sent: 11/20/00 11:15 AM >>Subject: RE: !H >> >>Does it meas that the destination NETWORK is unreachable or the >>destination >>HOST?? >> >>-Original Message- >>From: Richard Bosire [mailto:[EMAIL PROTECTED]] >>Sent: Monday, November 20, 2000 8:01 AM >>To: Jason yee >>Cc: John Huston; [EMAIL PROTECTED] >>Subject: Re: !H >> >> >>destination unreachable i.e not path to the destination network >> >>Jason yee wrote: >> >>> hi anyone knows what does the symbol !H means in >>> traceroute results >>> >>> __ >>> Do You Yahoo!? >>> Yahoo! Calendar - Get organized for the holidays! >>> http://calendar.yahoo.com/ >>> >>> _ >>> FAQ, list archives, and subscription info: >>http://www.groupstudy.com/list/cisco.html >>> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >> >>-- >>___ >>«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤ >> >>Richard Bosire >>Network Engineer CCNA,CCSE >>AfricaOnline (k) Ltd >>tel +254-2-243775 fax +254-2-243762 >>http://www.africaonline.co.ke >> >> >>_ >>FAQ, list archives, and subscription info: >>http://www.groupstudy.com/list/cisco.html >>Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >> >>_ >>FAQ, list archives, and subscription info: >>http://www.groupstudy.com/list/cisco.html >>Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] >> >>_ >>FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >>Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: !H not a complete answer
I thought !A meant this path is blocked by an access list. -Original Message- From: Jennifer Cribbs [mailto:[EMAIL PROTECTED]] Sent: Monday, November 20, 2000 12:13 PM To: [EMAIL PROTECTED] Subject: RE: !H not a complete answer This response is returned when an access list somewhere along the path prevents a router from forwarding a packet to the HOST. and that is correct. Jennifer Cribbs [EMAIL PROTECTED] >= Original Message From "Croyle, James" <[EMAIL PROTECTED]> = >http://www.cisco.com/warp/public/112/chapter7.htm > >I think you have a routing loop as is described here. Ping from several >stations and map it out. > >Jim > > >-Original Message- >From: Miller, Nathan (AZ15) >To: Richard Bosire; Jason yee >Cc: John Huston; [EMAIL PROTECTED] >Sent: 11/20/00 11:15 AM >Subject: RE: !H > >Does it meas that the destination NETWORK is unreachable or the >destination >HOST?? > >-Original Message- >From: Richard Bosire [mailto:[EMAIL PROTECTED]] >Sent: Monday, November 20, 2000 8:01 AM >To: Jason yee >Cc: John Huston; [EMAIL PROTECTED] >Subject: Re: !H > > >destination unreachable i.e not path to the destination network > >Jason yee wrote: > >> hi anyone knows what does the symbol !H means in >> traceroute results >> >> __ >> Do You Yahoo!? >> Yahoo! Calendar - Get organized for the holidays! >> http://calendar.yahoo.com/ >> >> _ >> FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > >-- >___ >«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤ > >Richard Bosire >Network Engineer CCNA,CCSE >AfricaOnline (k) Ltd >tel +254-2-243775 fax +254-2-243762 >http://www.africaonline.co.ke > > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > >_ >FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: !H not a complete answer
From cisco: "If the router receives a datagram which it is unable to deliver to it's ultimate destination because it knows of no route to the destination address, it replies to the originator of that datagram with an ICMP Host Unreachable message." An access-list denying icmp echo-requests will simply not permit the forwarding of icmp echo-requests. From the use of ping, this would be observed as timeouts rather than "Host Unreachable" or "!H". --phil | -Original Message- | From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of | Jennifer Cribbs | Sent: Monday, November 20, 2000 1:13 PM | To: [EMAIL PROTECTED] | Subject: RE: !H not a complete answer | | | This response is returned when an access list somewhere along the path | prevents a router from forwarding a packet to the HOST. | | and that is correct. | | Jennifer Cribbs | [EMAIL PROTECTED] | | _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: !H not a complete answer
This response is returned when an access list somewhere along the path prevents a router from forwarding a packet to the HOST. and that is correct. Jennifer Cribbs [EMAIL PROTECTED] >= Original Message From "Croyle, James" <[EMAIL PROTECTED]> = >http://www.cisco.com/warp/public/112/chapter7.htm > >I think you have a routing loop as is described here. Ping from several >stations and map it out. > >Jim > > >-Original Message- >From: Miller, Nathan (AZ15) >To: Richard Bosire; Jason yee >Cc: John Huston; [EMAIL PROTECTED] >Sent: 11/20/00 11:15 AM >Subject: RE: !H > >Does it meas that the destination NETWORK is unreachable or the >destination >HOST?? > >-Original Message- >From: Richard Bosire [mailto:[EMAIL PROTECTED]] >Sent: Monday, November 20, 2000 8:01 AM >To: Jason yee >Cc: John Huston; [EMAIL PROTECTED] >Subject: Re: !H > > >destination unreachable i.e not path to the destination network > >Jason yee wrote: > >> hi anyone knows what does the symbol !H means in >> traceroute results >> >> __ >> Do You Yahoo!? >> Yahoo! Calendar - Get organized for the holidays! >> http://calendar.yahoo.com/ >> >> _ >> FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > >-- >___ >«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤ > >Richard Bosire >Network Engineer CCNA,CCSE >AfricaOnline (k) Ltd >tel +254-2-243775 fax +254-2-243762 >http://www.africaonline.co.ke > > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > >_ >FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: !H
It means the destination network is unreachable due to an access list on a router somewhere along the way. [EMAIL PROTECTED] >= Original Message From "Croyle, James" <[EMAIL PROTECTED]> = >http://www.cisco.com/warp/public/112/chapter7.htm > >I think you have a routing loop as is described here. Ping from several >stations and map it out. > >Jim > > >-Original Message- >From: Miller, Nathan (AZ15) >To: Richard Bosire; Jason yee >Cc: John Huston; [EMAIL PROTECTED] >Sent: 11/20/00 11:15 AM >Subject: RE: !H > >Does it meas that the destination NETWORK is unreachable or the >destination >HOST?? > >-Original Message- >From: Richard Bosire [mailto:[EMAIL PROTECTED]] >Sent: Monday, November 20, 2000 8:01 AM >To: Jason yee >Cc: John Huston; [EMAIL PROTECTED] >Subject: Re: !H > > >destination unreachable i.e not path to the destination network > >Jason yee wrote: > >> hi anyone knows what does the symbol !H means in >> traceroute results >> >> __ >> Do You Yahoo!? >> Yahoo! Calendar - Get organized for the holidays! >> http://calendar.yahoo.com/ >> >> _ >> FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > >-- >___ >«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤ > >Richard Bosire >Network Engineer CCNA,CCSE >AfricaOnline (k) Ltd >tel +254-2-243775 fax +254-2-243762 >http://www.africaonline.co.ke > > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > >_ >FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > >_ >FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: !H
A routing loop will generally bounce back and forth between two interfaces when you do a traceroute. Host unreachable just means the box is down and a route still remains for it. andy > On Mon, 20 Nov 2000, Croyle, James wrote: > > > http://www.cisco.com/warp/public/112/chapter7.htm > > > > I think you have a routing loop as is described here. Ping from several > > stations and map it out. > > > > Jim > > > > > > -Original Message- > > From: Miller, Nathan (AZ15) > > To: Richard Bosire; Jason yee > > Cc: John Huston; [EMAIL PROTECTED] > > Sent: 11/20/00 11:15 AM > > Subject: RE: !H > > > > Does it meas that the destination NETWORK is unreachable or the > > destination > > HOST?? > > > > -Original Message- > > From: Richard Bosire [mailto:[EMAIL PROTECTED]] > > Sent: Monday, November 20, 2000 8:01 AM > > To: Jason yee > > Cc: John Huston; [EMAIL PROTECTED] > > Subject: Re: !H > > > > > > destination unreachable i.e not path to the destination network > > > > Jason yee wrote: > > > > > hi anyone knows what does the symbol !H means in > > > traceroute results > > > > > > __ > > > Do You Yahoo!? > > > Yahoo! Calendar - Get organized for the holidays! > > > http://calendar.yahoo.com/ > > > > > > _ > > > FAQ, list archives, and subscription info: > > http://www.groupstudy.com/list/cisco.html > > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > > -- > > ___ > > «¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤ > > > > Richard Bosire > > Network Engineer CCNA,CCSE > > AfricaOnline (k) Ltd > > tel +254-2-243775 fax +254-2-243762 > > http://www.africaonline.co.ke > > > > > > _ > > FAQ, list archives, and subscription info: > > http://www.groupstudy.com/list/cisco.html > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > > _ > > FAQ, list archives, and subscription info: > > http://www.groupstudy.com/list/cisco.html > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > > _ > > FAQ, list archives, and subscription info: >http://www.groupstudy.com/list/cisco.html > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > > > _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: !H
That sounds like a Boson question, as a matter of fact, I remember getting it wrong by saying destination network unreachable, and not destination host unreachable. I never did check to see what the Cisco answer was Tim > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > Miller, Nathan (AZ15) > Sent: Monday, November 20, 2000 5:16 PM > To: Richard Bosire; Jason yee > Cc: John Huston; [EMAIL PROTECTED] > Subject: RE: !H > > > Does it meas that the destination NETWORK is unreachable or the > destination > HOST?? > > -Original Message- > From: Richard Bosire [mailto:[EMAIL PROTECTED]] > Sent: Monday, November 20, 2000 8:01 AM > To: Jason yee > Cc: John Huston; [EMAIL PROTECTED] > Subject: Re: !H > > > destination unreachable i.e not path to the destination network > > Jason yee wrote: > > > hi anyone knows what does the symbol !H means in > > traceroute results > > > > __ > > Do You Yahoo!? > > Yahoo! Calendar - Get organized for the holidays! > > http://calendar.yahoo.com/ > > > > _ > > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > -- > ___ > «¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤ > > Richard Bosire > Network Engineer CCNA,CCSE > AfricaOnline (k) Ltd > tel +254-2-243775 fax +254-2-243762 > http://www.africaonline.co.ke > > > _ > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > _ > FAQ, list archives, and subscription info: > http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: !H
http://www.cisco.com/warp/public/112/chapter7.htm I think you have a routing loop as is described here. Ping from several stations and map it out. Jim -Original Message- From: Miller, Nathan (AZ15) To: Richard Bosire; Jason yee Cc: John Huston; [EMAIL PROTECTED] Sent: 11/20/00 11:15 AM Subject: RE: !H Does it meas that the destination NETWORK is unreachable or the destination HOST?? -Original Message- From: Richard Bosire [mailto:[EMAIL PROTECTED]] Sent: Monday, November 20, 2000 8:01 AM To: Jason yee Cc: John Huston; [EMAIL PROTECTED] Subject: Re: !H destination unreachable i.e not path to the destination network Jason yee wrote: > hi anyone knows what does the symbol !H means in > traceroute results > > __ > Do You Yahoo!? > Yahoo! Calendar - Get organized for the holidays! > http://calendar.yahoo.com/ > > _ > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] -- ___ «¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤ Richard Bosire Network Engineer CCNA,CCSE AfricaOnline (k) Ltd tel +254-2-243775 fax +254-2-243762 http://www.africaonline.co.ke _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: !H
A !H indicates that the router at that hop doesn't know anything about the target address; the packet comes back to the source with a message saying "No Forwarding Address". gabriel - Original Message - From: "Jason yee" <[EMAIL PROTECTED]> To: "John Huston" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Monday, November 20, 2000 3:20 PM Subject: !H > > hi anyone knows what does the symbol !H means in > traceroute results > > > > > > > > > __ > Do You Yahoo!? > Yahoo! Calendar - Get organized for the holidays! > http://calendar.yahoo.com/ > > _ > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: !H
Does it meas that the destination NETWORK is unreachable or the destination HOST?? -Original Message- From: Richard Bosire [mailto:[EMAIL PROTECTED]] Sent: Monday, November 20, 2000 8:01 AM To: Jason yee Cc: John Huston; [EMAIL PROTECTED] Subject: Re: !H destination unreachable i.e not path to the destination network Jason yee wrote: > hi anyone knows what does the symbol !H means in > traceroute results > > __ > Do You Yahoo!? > Yahoo! Calendar - Get organized for the holidays! > http://calendar.yahoo.com/ > > _ > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] -- ___ «¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤ Richard Bosire Network Engineer CCNA,CCSE AfricaOnline (k) Ltd tel +254-2-243775 fax +254-2-243762 http://www.africaonline.co.ke _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: !H
destination unreachable i.e not path to the destination network Jason yee wrote: > hi anyone knows what does the symbol !H means in > traceroute results > > __ > Do You Yahoo!? > Yahoo! Calendar - Get organized for the holidays! > http://calendar.yahoo.com/ > > _ > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] -- ___ «¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤»§«¤»¥«¤ Richard Bosire Network Engineer CCNA,CCSE AfricaOnline (k) Ltd tel +254-2-243775 fax +254-2-243762 http://www.africaonline.co.ke _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: !H
Host unreachable. --phil On Mon, 20 Nov 2000, Jason yee wrote: hi anyone knows what does the symbol !H means in traceroute results _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: H.323 prioritization
Hi You should use "ip rtp priority" plus WFQ or CBQWFP or "ip rtp reserve" Custom queueing is not the best solution for voice, because you need strict priority for voice. In both cases I would recomend to use L2 fragmentation if your interface is below 1 Mbits (FRF.12 or ppp interleaving) The ports are usually above 16384. Example (i skip irrelevant info, this reserve 48 kbps and 20 udp voice ports ): in s0 encapsulation ppp ppp multilink multilink virtual template 1 in lo0 ip address int virtual-template 1 ip unnumbered lo0 ip rtp reserve 16384 20 48 ppp multilink ppp multilink fragment-delay 15 ppp multilink interleave "Arigo, Francis" escribió: > Has anyone used custom prioritization and queuing to prioritize H.323 > traffic over other data traffic? If so, I'd be very interested in seeing > some working configurations. > > The problem that I'm having is narrowing the field of ports to prioritize. > Prioritizing the initial TCP handshake is straightforward, but once it makes > the connection it uses a dynamic UDP high port . Do you prioritize all high > port UDP traffic? > > The devices that create the H.323 traffic are two voice PBXs(com2001) that > have VoIP capabilities via the H.323 standard. They are connected by a T1 > using 2501s to route IP. > > Thanks in advance for your assistance. > Francis Arigo, MCSE, CCNA > System Administrator > Classroom Connect > > ___ > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > FAQ, list archives, and subscription info: http://www.groupstudy.com > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > --- ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: H.323 prioritization
I see that the VoIP uses NT as the OS. How much none VoIP traffic do you expect from that box? If it is not alot, you can use the source IP address for QoS setup. Can you call com2001 to ask how the port number is calculated? I say throw it away and use Cisco gear. Albert -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Arigo, Francis Sent: Tuesday, June 13, 2000 5:16 PM To: '[EMAIL PROTECTED]' Subject: H.323 prioritization Has anyone used custom prioritization and queuing to prioritize H.323 traffic over other data traffic? If so, I'd be very interested in seeing some working configurations. The problem that I'm having is narrowing the field of ports to prioritize. Prioritizing the initial TCP handshake is straightforward, but once it makes the connection it uses a dynamic UDP high port . Do you prioritize all high port UDP traffic? The devices that create the H.323 traffic are two voice PBXs(com2001) that have VoIP capabilities via the H.323 standard. They are connected by a T1 using 2501s to route IP. Thanks in advance for your assistance. Francis Arigo, MCSE, CCNA System Administrator Classroom Connect ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
