Re: RIF "length" Field Question
The short answer is yes. Examples: c6 10 00 11 00 20 >6 bytes, ring 1 bridge 1 to ring 2 c8 10 00 11 00 21 00 30 >8 bytes, ring 1 bridge 1 to ring 2 bridge 1 to ring 3 ca 10 00 11 00 21 00 31 00 40 > 10 bytes, 3 bridges max is 7 bridges, 18 bytes. d2 10 00 11 00 21 00 31 00 41 00 51 00 61 00 71 00 80 > 18 bytes, 7 bridges The length bits are bits 3-7 in the first byte of the RIF Routing Control Field. This field can be represented as: BBBL with the convention of leftmost bit being bit 0, rightmost, 7. The B's are the broadcast indicators, and the L's are the length bits. HTH., Fred. perryb wrote: > > Hello all, > > I'm a little confused over "length" bits in the RIF. The Token Ring White > Paper (Lou Rossi), states that "bits 12 through 8 describe the total length > represented in bytes." It goes on to say that a value of "a" indicates > there are 3 bridges, an "8" indicates there are 2 bridges, and a "6" > indicates there is one (1) bridge. > > My question is this: Does the above parameters take int0 account the very > last bridge i.e., since all RIFs end in a bridge of "0," is this last bridge > (0) included in the count of the length bits? > > Example: > > Packet type = specific route > Direction > > Frame size = 512 > > Host1--ring--bridge--ring--bridge--ring--Host2 > > Would this be a "0830...xxx0" or a "0A30...xxx0" > > The reason that I ask, is because on several CCIE practice test, as well as > the actual written exam, the answers do not seem to regard this fine point. > > thanks > > _ > 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: dhcp on 3640
Yes, IOS 12.0 +. Look on the cisco CD under 12.0 New features or on CCO. One URL for the CD is: http://127.0.0.1:8080/cc/td/doc/product/software/ios120/120newft/120t/120t1/easyip2.htm Fred. Jeff Frontera wrote: > > Can a 3640 be configured to act as a dhcp server...how do I set it up?? > > _ > 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: what is the average age of people in this stuff?
rtc: I passed my ccie when I was 20 years your senior. Age isn't an excuse. Fred. rtc wrote: > > I'm 40--am I getting too old for this stuff? Cant remember anything worth a > damn, > especially the commands nd command syntax > > _ > 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: BRS, ECP1, ACCP CCIE Practice Labs
The ECP1 course is offered by Mentor Technologies, mentortech.com, not ARS. Search archives for opinions on these courses. Cheers, Fred. Bruce Williams wrote: > > Hello all, > > I am preparing for my CCIE. I already plan to use the CCIEbootcamp labs > because I have heard great things about them, but I would also like to get > an instructor led CCIE Lab course. People in this group have mentioned the > Bridges, Routers and Switches course by ARS, and the ECP1 which I think is > also an ARS course and the ACCP course by GlobalKnowledge. I can only afford > to do only one of these. Which one do you recommend? > Please give me your feedback, I need to get the most out of the thousands of > dollars this is going to cost me. > > Bruce Williams > CCNA CCDA CCNP CCDP CCAI > [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: Bruce Caslow
In the ECP-1 course the number of routers in each rack is seven. Token ring is included on routers and also on 3920 TR switch. ATM and voice also included. Explanations are always given as is individual help if student didn't understand the way a topic was presented. Where did you get your bad info? Fred Dale Holmes wrote: > > I hear that it is a great class, as long as you don't mind working with a > half rack (3 routers) and no token ring... Oh, and if you don't understand > something that is presented I hope you don't expect to have it explained... > > This is what I have heard from those who have actually taken the course. I > have not done so myself - there are better ways to spend that kind of $$$ > (IMNSHO). > > >From: "info" <[EMAIL PROTECTED]> > >Reply-To: "info" <[EMAIL PROTECTED]> > >To: [EMAIL PROTECTED] > >Subject: Bruce Caslow > >Date: Thu, 26 Oct 2000 10:58:18 -0400 > > > >I just registered to take a class with the company > >that employs Bruce Caslow's teaching services; > >Mentor Technologies. > > > >I was wondering if any of you have had the opportunity > >to take his lab exam prep course. The woman I > >spoke with estimated that 80% of the people > >who take the course pass the lab exam on the > >first try. > > > >I am mildly skeptical of that but not enough to > >not attend the class. > > > >In any case, has anyone had experience with > >this group Mentor Technologies? Is Caslow > >the best instructor there? I've been told that > >all the other instructors are his students. I > >was told they allow you to stay in the classroom > >practicing stuff as long as you wantinto the > >wee hours of the night if necessary. > > > >On a similar note: has anyone had excellent results > >from a class from another vendor? > > > > > >On an unrelated note: thanks so much to all who > >responded to my query about bandwidth statements > >on frame relay links. Definitely helped alot! > > > > > >_ > >FAQ, list archives, and subscription info: > >http://www.groupstudy.com/list/cisco.html > >Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > _ > Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. > > Share information about yourself, create your own public profile at > http://profiles.msn.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: Kinda OT - ARP Question
You could just enter "clear arp" this will force a refresh. If you want to totally clear an entry shut/no shut the interface it was learned on. Of course, make sure this isn't the interface you are using for your telnet session |:) Fred. "Hinds, Jarrett (contractor)" wrote: > > I believe, by default, the timeout for ARP on a 3640 is four hours. I was > wondering if there is anyway to force an update of this ARP table without > having access to the router to manually clear the table. Would pinging the > router from a box with the same IP address, but different MAC do the trick? > Or do I have to wait the four hours for a timeout? > > Thanks, > > Jarrett > > _ > 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: Appletalk over frame-relay
I didn't intrepret the question as bridging AT. To route AT over Frame one config is: r1: appletalk routing int s 0 encap frame frame-relay map appletalk 100.2 102 br apple cable-range 100-100 100.1 apple zone frame12 r2: appletalk routing int s 0 encap frame frame-relay map appletalk 100.1 201 br apple cable-range 100-100 100.2 apple zone frame12 You could also use the interface dlci command and inverse arp for the mapping. There are other commands for eigrp and using subinterfaces ( for split-horizon and routing out of the same interface.) Fred. Adrian Chew wrote: > > Glad to help... see below for config examples... > > <[EMAIL PROTECTED]> wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > > I am trying to configure 5 Cisco router's with appletalk, can someone > out > > their send me a complete config list? > > Sure... > > hostname R1 <- change for your hostname > ! > bridge irb <- for Appletalk to work on Frame > appletalk routing <- to route Appletalk > ! > enable secret apassword <- change to your own password > ! > interface s0 > encapsulation frame-relay <- for Frame-Relay > ip add x.x.x.x m.m.m.m <- insert your IP address > frame-relay interface dlci 123 <- insert your DLCIs > frame-relay interface dlci 234 <- if more than one, each must be seperate > bridge-group 1 <- enables Appletalk > ! > interface e0 > ip add x.x.x.x m.m.m.m <- insert your IP address > bridge-group 1 <- enables Appletalk > ! > bridge 1 route ip <- for IP to work > no bridge 1 bridge ip <- so IP and Appletalk don't conflict > bridge 1 bridge appletalk <- ties Appletalk config together > bridge 1 protocol ieee <- bridge protocol for Appletalk (sounds just like > iMac too!) > ! > line con 0 > no exec <- safety measure/better security, must supply enable password for > access > ! > line aux 0 > no exec <- safety measure/better security, must supply enable password for > access > ! > line vty 0 4 > no login <- safety measure/better security so no one can login from > Internet! > privilege level 15 <- specifies dumb mode, level 1 gives you > everything/enable access > > You can cut and past the whole configs and modify for each router (just > remember to remove the comments and put in your own IP addresses and DLCIs). > If you don't know what DLCI to use, ask your provider. > ;-) > > Regards, > Adrian > > _ > 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: Test is in 2 hours and I'm having difficulties with RIF [7:2040]
Sure hope he didn't believe your answer. 8 is correct - the total number of bytes in the RIF. Fred. Wilbo Waggins wrote: > > I believe that the 8 bytes is wrong. An RD is 12 bits for the ring, and 4 > bits for the bridge number. This is 16 bits which is 2 bytes. 2 bytes for > each ring, bridge combination or RD. It has to be 6. > > No wonder why the CCIE exam is such a pain in the butt. The documentation > and learning material stinks. > > ""Michael Bambic"" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > I'm having an issue with several different view on RIF decoding. > > > > One place says this: > > If I have a RIF of > > 0610 00A1 00B2 00C0 > > This is valid because in binary the RC fields say: > > 000 00110 0 001 > > Which means: > > RC = 6 bytes of information which equates to 3 Ring/Bridge combo's read > from > > left to right and a length of 1500 > > RD = Ring 10 to Bridge 1 to Ring 11 to Bridge 2 to Ring 12 to Bridge 0 > which > > is always the last bridge > > > > Another place says this: > > If I have a RIF of > > 0810 00A1 00B2 00C3 > > RC fields say: > > 000 01000 0 001 > > RC = 8 bytes of information which equates to 3 Ring/Bridge combo's read > from > > left to right with a length of 1500 > > RD = Ring 10 to Bridge 1 to Ring 11 to Bridge 2 to Ring 12 to Bridge 0 > which > > is always the last bridge > > > > WHICH IS CORRECT? > > 8 bytes = 3 ring/bridge combo's or > > 6 byes = 3 ring/bridge combo's > > > > If I look at the RD it is 6 byes which makes me believe the first example > is > > correct, however at http://www.cisco.com/warp/public/100/46.html and the > > CCIEprep token ring it shows the 8 bytes = 3 ring/bridge combo's. > > > > I understand everything else but I will miss every RIF decode question if > I > > don't figure this out. > > Thanks! > > Mike Bambic > > Lead Mentor > > Phoenix Branch > > 602-955-5888 > > Cisco Regional Business Development Manager > > TechSkills > > www.techskills.com > > [EMAIL PROTECTED] > > > > [GroupStudy.com removed an attachment of type application/ms-tnef which > had > > a name of winmail.dat] > > 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] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=2040&t=2040 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Test is in 2 hours and I'm having difficulties with RIF [7:2200]
RSRB, or DLSW+. In simple SRB the RIF would show the configured rings end-to-end. In RSRB the RIF is also end-to-end with the virtual ring joining the two remote ends. In DLSW+ the RIF is terminated at the local DLSW peer unless DLSW is configured for rif-passthru. HTH, Fred. Andy Low wrote: > > Hi, > > Any one know how to interpret RIF based on different network topology: SRB, > RSRM, DLsw+ ? > > Is there a better way? > > Andy > > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > Fred Ingham > Sent: Thursday, April 26, 2001 12:19 PM > To: [EMAIL PROTECTED] > Subject: Re: Test is in 2 hours and I'm having difficulties with RIF > [7:2040] > > Sure hope he didn't believe your answer. 8 is correct - the total > number of bytes in the RIF. > > Fred. > > Wilbo Waggins wrote: > > > > I believe that the 8 bytes is wrong. An RD is 12 bits for the ring, and 4 > > bits for the bridge number. This is 16 bits which is 2 bytes. 2 bytes > for > > each ring, bridge combination or RD. It has to be 6. > > > > No wonder why the CCIE exam is such a pain in the butt. The documentation > > and learning material stinks. > > > > ""Michael Bambic"" wrote in message > > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > > I'm having an issue with several different view on RIF decoding. > > > > > > One place says this: > > > If I have a RIF of > > > 0610 00A1 00B2 00C0 > > > This is valid because in binary the RC fields say: > > > 000 00110 0 001 > > > Which means: > > > RC = 6 bytes of information which equates to 3 Ring/Bridge combo's read > > from > > > left to right and a length of 1500 > > > RD = Ring 10 to Bridge 1 to Ring 11 to Bridge 2 to Ring 12 to Bridge 0 > > which > > > is always the last bridge > > > > > > Another place says this: > > > If I have a RIF of > > > 0810 00A1 00B2 00C3 > > > RC fields say: > > > 000 01000 0 001 > > > RC = 8 bytes of information which equates to 3 Ring/Bridge combo's read > > from > > > left to right with a length of 1500 > > > RD = Ring 10 to Bridge 1 to Ring 11 to Bridge 2 to Ring 12 to Bridge 0 > > which > > > is always the last bridge > > > > > > WHICH IS CORRECT? > > > 8 bytes = 3 ring/bridge combo's or > > > 6 byes = 3 ring/bridge combo's > > > > > > If I look at the RD it is 6 byes which makes me believe the first > example > > is > > > correct, however at http://www.cisco.com/warp/public/100/46.html and the > > > CCIEprep token ring it shows the 8 bytes = 3 ring/bridge combo's. > > > > > > I understand everything else but I will miss every RIF decode question > if > > I > > > don't figure this out. > > > Thanks! > > > Mike Bambic > > > Lead Mentor > > > Phoenix Branch > > > 602-955-5888 > > > Cisco Regional Business Development Manager > > > TechSkills > > > www.techskills.com > > > [EMAIL PROTECTED] > > > > > > [GroupStudy.com removed an attachment of type application/ms-tnef which > > had > > > a name of winmail.dat] > > > 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] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=2200&t=2200 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ECP1 or ACCP1,2,3 [7:1710]
Knowledge, and is certainly not being discontinued. ECP1 is a one week intensive course for CCIE lab candidates. Reviews can be found in the archives. Cheers, Fred Laurel Jones wrote: > > I am looking at signing up for the APPC program which includes ACCP1, 2 3, a > mock lab, mentoring, and remote lab access. However, I've been talking over > the last week or so with the rep at Global Knowledge and I'm becoming a > little leery of the program. He says they are discontinuing the ECP labs > and replacing with the ACCP, but they are still in the midst of making > changes and that he couldn't quote a firm price yet or even tell me exactly > what would be included in the program. He said they are meeting on > Wednesday of this week to go over the changes in the program and that he > will get back to me after that. I've also heard some reports that Global > has recently cancelled a lot of scheduled classes including the ECP labs > because not enough students were signing up. I can understand their need to > do this to stay profitable, but evidently it is leaving some students who > have purchased the courses as a package deal like the APPC program kind of > "high and dry." > -Original Message- > From: roger mcneace [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, April 24, 2001 7:48 AM > To: [EMAIL PROTECTED] > Subject: ECP1 or ACCP1,2,3 [7:1710] > > Has anyone attended the ECP1 or ACCP1,2,3 CCIE lab prep courses? What are > your recommendations. > 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] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=2203&t=1710 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Redistribution: OSPF to IGRP [7:3983]
command on r1 so one approach is to summarize in the other areas to a /28. The /29 IA from 59.3 can be summarized as area x range 172.17.96.0 255.255.255.240. The /30 IA from 59.3 can be summarized as area x range 172.17.108.0 255.255.255.240. And the /30 IA from 59.1 can be summarized as area x range 172.16.104.0 255.255.255.240. These three routes should then be propagated to r4. HTH, Fred "Virnoche, Phil" wrote: > > Here is my problem: > > The major network is 172.17.0.0 > (OSPF domain with /28, /29, /30) R2 -IGRP link/28-- R4 (IGRP domain > /28) > > Mutual redistribution at R1... knowing that I have only 1 network (variably > subnetted) how can I get a "default network" in R2 and make the whole > network reachable from R4 ? > > r2#sho ip rou > Gateway of last resort is not set > > 172.17.0.0/16 is variably subnetted, 9 subnets, 3 masks > C 172.17.59.0/28 is directly connected, Serial0/0 > C 172.17.59.16/28 is directly connected, BRI0/0 > C 172.17.59.32/28 is directly connected, FastEthernet0/0 > C 172.17.59.48/28 is directly connected, Serial0/1 > O IA172.17.59.64/28 [110/112] via 172.17.59.3, 07:50:24, Serial0/0 > I 172.17.59.80/28 [100/8576] via 172.17.59.50, 00:01:04, Serial0/1 > O IA172.17.59.96/29 [110/70] via 172.17.59.3, 07:50:24, Serial0/0 > O IA172.17.59.108/30 [110/118] via 172.17.59.3, 07:50:25, Serial0/0 > O IA172.17.59.104/30 [110/65] via 172.17.59.1, 07:50:25, Serial0/0 > > r4#sho ip rou > > Gateway of last resort is not set > > 172.17.0.0/28 is subnetted, 6 subnets > I 172.17.59.0 [100/10476] via 172.17.59.49, 00:00:18, Serial0 > I 172.17.59.16 [100/160250] via 172.17.59.49, 00:00:18, Serial0 > I 172.17.59.32 [100/8486] via 172.17.59.49, 00:00:18, Serial0 > C 172.17.59.48 is directly connected, Serial0 > I 172.17.59.64 [100/8576] via 172.17.59.49, 00:00:18, Serial0 > C 172.17.59.80 is directly connected, Ethernet0 > > Philip G. Virnoche > Sr. Network Engineer - AT&T Wireless > phone: 425.580.5239 > cell: 206.601.3134 > > "HAM AND EGGS - A day's work for a chicken; A lifetime commitment for a > pig." > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=4027&t=3983 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Redistribution: OSPF to IGRP [7:3983]
must be summarized on the 59.3 router. The networks are 172.17.59.104/30, 172.17.59.108/30, and 172.17.59.96/29. These must be summarized to a /28. The key observation is that all three subnets summarize to the same /28 network, 172.17.59.96. Using a "area x range 172.17.59.96 255.255.255.240" summarization on the 59.3 router will put this route in r4's routing table. You will not see the 104 or 108 routes in r4 but they are reachable from r4. The mutual redistribution between IGRP and OSPF has to be on the router attached to the IGRP domain, r2, although you say it is on r1. r2 will have a /30 for 104 from 59.1 and a /28 for .96 from 59.3 (covering the 96 and 108 networks); a ping from r4 will use a longest match on r2 to be routed to either 59.1 or 59.3. (configs were shipped separately) Cheers, Fred. "Virnoche, Phil" wrote: > > Here is my problem: > > The major network is 172.17.0.0 > (OSPF domain with /28, /29, /30) R2 -IGRP link/28-- R4 (IGRP domain > /28) > > Mutual redistribution at R1... knowing that I have only 1 network (variably > subnetted) how can I get a "default network" in R2 and make the whole > network reachable from R4 ? > > r2#sho ip rou > Gateway of last resort is not set > > 172.17.0.0/16 is variably subnetted, 9 subnets, 3 masks > C 172.17.59.0/28 is directly connected, Serial0/0 > C 172.17.59.16/28 is directly connected, BRI0/0 > C 172.17.59.32/28 is directly connected, FastEthernet0/0 > C 172.17.59.48/28 is directly connected, Serial0/1 > O IA172.17.59.64/28 [110/112] via 172.17.59.3, 07:50:24, Serial0/0 > I 172.17.59.80/28 [100/8576] via 172.17.59.50, 00:01:04, Serial0/1 > O IA172.17.59.96/29 [110/70] via 172.17.59.3, 07:50:24, Serial0/0 > O IA172.17.59.108/30 [110/118] via 172.17.59.3, 07:50:25, Serial0/0 > O IA172.17.59.104/30 [110/65] via 172.17.59.1, 07:50:25, Serial0/0 > > r4#sho ip rou > > Gateway of last resort is not set > > 172.17.0.0/28 is subnetted, 6 subnets > I 172.17.59.0 [100/10476] via 172.17.59.49, 00:00:18, Serial0 > I 172.17.59.16 [100/160250] via 172.17.59.49, 00:00:18, Serial0 > I 172.17.59.32 [100/8486] via 172.17.59.49, 00:00:18, Serial0 > C 172.17.59.48 is directly connected, Serial0 > I 172.17.59.64 [100/8576] via 172.17.59.49, 00:00:18, Serial0 > C 172.17.59.80 is directly connected, Ethernet0 > > Philip G. Virnoche > Sr. Network Engineer - AT&T Wireless > phone: 425.580.5239 > cell: 206.601.3134 > > "HAM AND EGGS - A day's work for a chicken; A lifetime commitment for a > pig." > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=4201&t=3983 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Manchester symbols [7:6655]
Manchester encoding is used on 10 Mbps Ethernet, Differential Manchester encoding is used on token ring. Fred. hal9001 wrote: > > Something to do with Ethernet Encoding I fink...anyone else? > > Karl > - Original Message - > From: "g_study" > To: > Sent: Thursday, May 31, 2001 9:07 PM > Subject: Manchester symbols [7:6655] > > > What are Manchester symbols? Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=6679&t=6655 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Hex to Decimal for the RD [7:38223]
All very good but an easier route is to configure the ring numbers in hex; the router will give the decimal equivalents. int tok 0 ring 16 source-bridge 0xf00 2 0x2f2 will appear as int tok 0 ring 16 source-bridge 3840 2 754 Fred. Kelly Cobean wrote: > > Bill, >Hex is equivalent to Base16 numbering. Decimal is really Base10 > numbering. Let's look at an example of Base10 numbering broken down into > it's components, then we'll tackle your examples.. > > The decimal number 4243 drawn out in Base10 is as follows: > (4x10^3) + (2x10^2) + (4x10^1) + (3x10^0) ... Let's do the math... > 4x1000 + 2x100 + 4x10 + 3x1 = 4243 > > Simple, right? So hex is exactly the same, except you use powers of 16 and > the letters A-F map to numbers 10-15 respectively. Let's do your > examples... > F00: > Fx16^2 + 0x16^1 + 0x16^0 ...Let's do the math... > 15x256 + 0x16 + 0x1 = 3840 ...Voila! Youve just converted Hex to > decimal. > > Now how does that give us the Ring/Bridge #'s?...First, you need to > understand that the Route Descriptor is broken down like this: > > , where R=Ring# and B=Bridge# > > Given that FOO in Binary is only 12 bits but the field above is 16 bits, we > have to pad the left side with 0's so as not to change the value (Though > it's not displayed this way.) This makes it 0x0F00. In binary, this is: > > 0x0F00 = This means that the Ring is and the > Bridge is when you break the fields apart. > Convert this binary back to decimal, you get Ring#=3840, Bridge#=0, (The > bridge bits set to all 0's means "the ring local to the destination). Valid > bridge #'s are 1-15. > > Your second example: > 2F2 = 0x02F2 = 00100010 = Ring 0010 / Bridge 0010 = Ring# > 47/Bridge# 2 > > If you had a RIF that read 0810.02F2.0F00, then the RIF would translate to > this: > 0810(Routing control bits).Ring47/Bridge2.Ring3840/Bridge0(or ring local to > destination) > > Hope this helps. > > Kelly Cobean, CCNP, CCSA, ACSA, MCSE, MCP+I > Network Engineer > > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > Mckenzie Bill > Sent: Thursday, March 14, 2002 9:02 AM > To: [EMAIL PROTECTED] > Subject: Hex to Decimal for the RD [7:38223] > > Could someone help me get a clear understanding of converting the hex number > to a nice decimal ring number or bridge number. > > Two examples that have me stumped are: > > F00 and 2f2. > > Thanks Everyone in advance. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=38264&t=38223 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Problem with RIF [7:38569]
first rif has a length of eight bytes but the length field says 24. A correct RIF would be C820.0123.0321.0050. This is read as: 110 - single route broadcast (spanning explorer) 01000 - length of eight 0 - read left to right 010 - max length of 2052 bytes - not used 00010010 - ring 012 (18 decimal) 0011 - bridge 3 00110010 - ring 032 (50 decimal) 0001 - bridge 1 0101 - ring 5 - bridge 0 (destination) The second RIF has a length of eight but the length field says six. A correct RIF would be 0830.0011.0191.0030. This would be read: 000 - Non-Broadcast 01000 - length of eight 0 - direction is left to right 011 - max 4472 bytes - not used 0001 - ring 1 0001 - bridge 1 00011001 - ring 19 (25 decimal) 0001 - bridge 1 0011 - ring 3 - bridge 0 (destination) Reference is: http://www.groupstudy.com/notes/notepages/rif2.html HTH, Fred. Juan Blanco wrote: > > Team, > The following RIF are invalid because the length specified in the RIF > differs from the actual length of the RIF. Can someone explain... > > example 1 > RIF d820.0123.0321.0050 > > TYPERIF LENGTH DIRECTION FRAME LENGHTNOT USED > 110 11000 0 010 > > How do you know that the rif length is different from the actual length of > the RIF (what are we counting here) > > example 2 > > RIF 0630.0011.0191.0030 > TYPERIF LENGTH DIRECTION FRAME LENGHTNOT USED > 000 00110 0 011 > > How do you know that the rif length different from the actual lengthf the > RIF (what are we counting here) > > Thanks, > > JB Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=38587&t=38569 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: TCP AcK and Seq numbers...HELP [7:39394]
transferred (i.e. the number of data bytes in the TCP packet, not the whole IP packet). The ack number is the next seq expected. Best way is to sniff a TCP session. For instance, if a password is entered, say to access a router, the password is transferred character by character and you will see the seq numbers increment by one. You need to pay attention to the direction of the flow. If you need an example, post me directly and I'll look through my sniffer traace library. Cheers, Fred. Juan Blanco wrote: > > Team, > > Do any one knows where I could find any document that explain how calculate > the TCP Ack and Seq numbers. Any explanation will be appreciate. > > Thanks, > > JB Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=39424&t=39394 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: MPLS White Paper Announcement [7:40035]
cyrillic characters. Good April Fool to create some buzz. Fred. Brian Zeitz wrote: > > I am not fluent in Russian, but I am fluent on how to translate stuff > using Office XP. I have a plugin that translates any document language > to any other language. Check out Worldlingo.com, you might be able to > translate it there for free. There are some cool free plug ins for > Office XP. > > I can do really cool stuff, not just the simple stuff like Spanish or > French. I can translate my English documents to Japanese, or even > Chinese, Viet etc. and vice versa. So the joke is not on me :) Thanks > for the free guide :) > > -Original Message- > From: Tim O'Brien [mailto:[EMAIL PROTECTED]] > Sent: Monday, April 01, 2002 11:12 AM > To: [EMAIL PROTECTED] > Subject: RE: MPLS White Paper Announcement [7:40035] > > Yea.. I am sure it is great.. if you are fluent in Russian > > Tim > CCIE 9015 > > -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of > David Wolsefer > Sent: Monday, April 01, 2002 10:21 AM > To: [EMAIL PROTECTED] > Subject: MPLS White Paper Announcement [7:40035] > > Galina Pildush is publishing an MPLS white paper today on > www.certificationzone.com. You better hurry though because it will only > be > available free for today only. This should be an excellent source for > those > studying for the C&S exam. As a CCIE and JNCIE, Galina knows MPLS well. > > Regards, > > David Wolsefer Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=40103&t=40035 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: MPLS White Paper Announcement [7:40035]
! ! ! Howard: It's in cyrillic characters but it certainly isn't in Russian. The English can be read if one sounds out the cyrillic characters. I'm not a Russian reader but I do know how to sound out most of the alphabet. This was confirmed by a native Russian speaker. One of the first lines reads phonetically - What is traffic engineering? Cheers, Fred "Howard C. Berkowitz" wrote: > > It's actually in Russian, but it turned out that it was highly > dependent on browser. Word 2000, almost any browser on the Mac as > long as the OS is Mac X, etc., work, as do an assortment of other > things. I personally can't read it, but I promise: > > the April Fool's part really is in Russian, > the MPLS paper proper is in English. The Russian goes away > tomorrow and everyone should be able to read the paper. > > For the record, I neither read Russian nor formatted the page! > > -- > "What Problem are you trying to solve?" > ***send Cisco questions to the list, so all can benefit -- not > directly to me*** > > Howard C. Berkowitz [EMAIL PROTECTED] > Chief Technology Officer, GettLab/Gett Communications http://www.gettlabs.com > Technical Director, CertificationZone.com http://www.certificationzone.com > "retired" Certified Cisco Systems Instructor (CID) #93005 Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=40120&t=40035 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: configuration register reference [7:16249]
5 is a console speed setting for those routers that can go above 9600. With bits 5 11 and 12 you have eight console speed settings not four. Cheers, Fred. Chuck Larrieu wrote: > > I've seen several posts recently asking for references on the config > register settings. > > the following link to a spreadsheet originally prepared by Adam Quiggle may > be of interest. > > http://home.nc.rr.com/quiggle/ConfigReg.xls > > HTH > > Chuck > **Please read:http://www.groupstudy.com/list/posting.html Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=16249&t=16249 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Can frame-relay multipoint sub-interfaces support inverse [7:26482]
1. 2. 3. repost - first post got to originator ok but groupstudy copy chopped off the first line. Numbers are to test chop. Original answer (ack'ed by originator): David: Short answer - yes. Try it. Fred "Ng, Kim Seng David (David)" wrote: > > Hi, > > I was a bit confused after reading the Ciscopress CCNP Support book and > Caslow's ccie book. Can frame-relay multipoint sub-interfaces support > inverse arp DLCI mappings?? Ciscopress Support book seem to say no (not > directly though) but Caslow's book says yes. Thanks in advance... > > David Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=26482&t=26482 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Caslow [7:27402]
Pavlichenko are teaching new CCIE Lab Preparation courses - RS-NMC-1 and RS-NMC-2. There is a class being held this week in Reston, Virginia. Details, schedules, and outlines of the courses and an e-mail address can be found at http://www.netmasterclass.net. Note - I am affiliated with NMC. Cheers, Fred. Gus Hussein wrote: > > Does any one know Caslow's E-mail or where he works, he used to teach at > Mentor. > > Does anyone know where he working now > > Thanks > > > > - > Do You Yahoo!? > Yahoo! GeoCities - quick and easy web site hosting, just $8.95/month. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=27510&t=27402 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: how to prepare for CCIE lab [7:27407]
Doing Lab exercises on a multi-router lab is essential in preparing for the lab. Search the archives on the ccielab section where this question has been asked and answered many times. One recent post that may help you search: "Subject: CCIE #8339 Date: Sat, 3 Nov 2001 20:34:58 -0600 From: "Richard Foltz" To: Well, its my turn to send this message, finally. I passed in RTP yesterday. I didnt think i had a prayer, but evidently I did better than i thought. It's been a very fun and educational experience being my 3rd trip to the lab it was also a long road. I used the usual stuff, all the cisco press books, and caslow's book. Also, I took ECP1 at the beginning of october, this class rocked and im sorry to see it gone, but i hear they are starting a new one. Val was an excellent instructor and i would recommend any class he teaches. Anyways, im going to rest a drink now. Have fun! Richard Foltz CCIE#8339" Cheers, Fred. D Rick wrote: > > What's the best way to prepare for the CCIE handson lab? Go buy a book and > do lab excercise?? Any suggestion? Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=27511&t=27407 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: CCIE training [7:27776]
reply. Bruce Caslow is working at NetMasterClass LLC. He and Val Pavlichenko are teaching new CCIE Lab Preparation courses - RS-NMC-1 and RS-NMC-2. There is a class being held this week in Reston, Virginia. Details, schedules, and outlines of the courses and an e-mail address can be found at http://www.netmasterclass.net. Note - I am affiliated with NMC. Cheers, Fred. Gus Hussein wrote: > > Does any bosy know where Bruce Caslow works now? > or any one knows his e-mail. > Thanks > > _ > Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=27837&t=27776 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: OSPF into iBGP with Sync [7:30126]
reflectors. The requirement for the BGP/OSPF identifier is stated in RFC 1364: "Varadhan[Page 4] RFC 1364 BGP OSPF InteractionSeptember 1992 3. BGP Identifier and OSPF router ID The BGP identifier must be the same as the OSPF router id at all times that the router is up. This characteristic is required for two reasons. i. Consider the scenario in which 3 routers, RT1, RT2, and RT3, belong to the same autonomous system. +-+ | RT3 | +-+ | Autonomous System running OSPF / \ +-+ +-+ | RT1 | | RT2 | +-+ +-+ Both RT1 and RT2 have routes to an external network X and import it into the OSPF routing domain. RT3 is advertising the route to network X to other external BGP speakers. RT3 must use the OSPF router ID to determine whether it is using RT1 or RT2 to forward packets to network X and hence build the correct AS_PATH to advertise to other external speakers. More precisely, RT3 must use the AS_PATH of the route announced by the ASBR, whose BGP Identifier is the same as the OSPF routerID corresponding to its route for network X. ii. It will be convenient for the network administrator looking at an ASBR to correlate different BGP and OSPF routes based on the identifier." Cisco issued a field notice on the problem where there was a route reflector. (Can't locate it in my pile(s)) In One Tech Note (BGP Best Path Selection Algorithm): "Paths marked as "not synchronized" in the show ip bgp output. If BGP synchronization is enabled, which it is by default in Cisco IOS. Software, there must be a match for the prefix in the IP routing table in order for an internal (iBGP) path to be considered a valid path. If the matching route is learned from an OSPF neighbor, its OSPF router ID must match the BGP router ID of the iBGP neighbor. Most users prefer to disable synchronization using the no synchronization BGP subcommand." The comparison can be done using the sh ip bgp xxx.yyy.zzz.aaa and show ip ospf data. HTH, Fred. John Neiberger wrote: > > We discovered something on the CCIE list recently and I'm > wondering if anyone might be able to explain the reasoning > behing this behavior. > > BGP synchronization rules require that if an iBGP peer is to > advertise a route learned via iBGP, it must have that prefix > *and* the next hop for that route in the routing table already. > > An interesting added complexity to this occurs if your IGP is > OSPF. If the router in question has learned these prefixes via > OSPF, then the advertising router ID in the OSPF database must > match the router ID of the iBGP peer that advertised the route. > > Has this behavior caused any problems for any of you? Do you > know why the synchronization rules have a special case for OSPF > and not other routing protocols? > > I was working with someone else on a practice lab and we ran > into this issue. We were both going nuts trying to figure out > why the iBGP routes weren't synchronizing and this turned out > to be the cause. > > Any thoughts? > > Thanks, > John > > > Get your own "800" number > Voicemail, fax, email, and a lot more > http://www.ureach.com/reg/tag Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=30353&t=30126 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: OSPF into iBGP with Sync [7:30126]
John et al: The first part of my message said that this is a particular problem with route reflectors. Don't know what I'm doing but the first line of my messages gets chopped frequently. Just didn't want people to think the BGP/OSPF requirement was arbitrary, though it seems to be based on an obsolete RFC. As you found, it is real in cisco BGP/OSPF configurations. Thanks to Howard and Pete for updating me on the RFC's. Cheers, Fred. John Neiberger wrote: > > Fred, > > Thanks, that's exactly what I was looking for, although it appears that > the first part of your response was chopped off for some reason. > > John > > >>> "Fred Ingham" 12/28/01 12:19:59 PM >>> > reflectors. > > The requirement for the BGP/OSPF identifier is stated in RFC 1364: > > "Varadhan[Page > 4] > > RFC 1364 BGP OSPF InteractionSeptember > 1992 > > > 3. BGP Identifier and OSPF router ID > >The BGP identifier must be the same as the OSPF router id at all >times that the router is up. > >This characteristic is required for two reasons. > > i. Consider the scenario in which 3 routers, RT1, RT2, and > RT3, >belong to the same autonomous system. > > +-+ > | RT3 | > +-+ >| > > Autonomous System running OSPF > > / \ > +-+ +-+ > | RT1 | | RT2 | > +-+ +-+ > >Both RT1 and RT2 have routes to an external network X and import it >into the OSPF routing domain. RT3 is advertising the route to >network X to other external BGP speakers. RT3 must use the OSPF >router ID to determine whether it is using RT1 or RT2 to forward >packets to network X and hence build the correct AS_PATH to > advertise >to other external speakers. > >More precisely, RT3 must use the AS_PATH of the route announced by >the ASBR, whose BGP Identifier is the same as the OSPF routerID >corresponding to its route for network X. > > ii. It will be convenient for the network administrator looking > at >an ASBR to correlate different BGP and OSPF routes based on >the identifier." > > Cisco issued a field notice on the problem where there was a route > reflector. (Can't locate it in my pile(s)) > > In One Tech Note (BGP Best Path Selection Algorithm): > > "Paths marked as "not synchronized" in the show ip bgp > output. If BGP synchronization is enabled, which it is by default in > Cisco IOS. Software, there must be a match for the prefix in the IP > routing table in order for an internal (iBGP) path to be considered a > valid path. If the matching route is learned from an OSPF neighbor, > its > OSPF router ID must match the BGP router ID of the iBGP neighbor. Most > users prefer to disable synchronization using the no synchronization > BGP > subcommand." > > The comparison can be done using the sh ip bgp xxx.yyy.zzz.aaa and > show > ip ospf data. > > HTH, Fred. > > John Neiberger wrote: > > > > We discovered something on the CCIE list recently and I'm > > wondering if anyone might be able to explain the reasoning > > behing this behavior. > > > > BGP synchronization rules require that if an iBGP peer is to > > advertise a route learned via iBGP, it must have that prefix > > *and* the next hop for that route in the routing table already. > > > > An interesting added complexity to this occurs if your IGP is > > OSPF. If the router in question has learned these prefixes via > > OSPF, then the advertising router ID in the OSPF database must > > match the router ID of the iBGP peer that advertised the route. > > > > Has this behavior caused any problems for any of you? Do you > > know why the synchronization rules have a special case for OSPF > > and not other routing protocols? > > > > I was working with someone else on a practice lab and we ran > > into this issue. We were both going nuts trying to figure out > > why the iBGP routes weren't synchronizing and this turned out > > to be the cause. > > > > Any thoughts? > > > > Thanks, > > John > > > > > > Get your own "800" number > > Voicemail, fax, email, and a lot more > > http://www.ureach.com/reg/tag Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=30409&t=30126 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: netmaster class ccie lab prep [7:30266]
post was (edited): "Subject: CCIE #8540 Date: Wed, 19 Dec 2001 18:28:06 +0200 From: "Ben-Shalom, Omer" To: "'[EMAIL PROTECTED]'" I did a one week preparation course with NetMastersClass which was better then great, my thanks to Bruce and Val and all the other students in the lab and especially to Tammy. " Fred. . Dennis Bailey wrote: > > Anybody been to these classes yet? Feedback? Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=30417&t=30266 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Cat 3920 concepts and examples - idle thoughts [7:30566]
Comments on the last Paragraph: Yes the source ring on the router would be the same as the ring number configured for the TrCRF (Concentrator Relay Function) remembering that the 3920 is configured in hex and the router is configured in decimal ( you can use 0xRR on the router). The source bridge can be any number. It doesn't have to match the TrBRF (Bridge Relay Function). The target ring is the DLSW virtual ring as you state. When you configure a single TrCRF to a TrBRF you are configuring an expensive MAU. One doesn't run DLSW across a 3920. But if you mean that there are hosts connected to the 3920 that you want to reach via DLSW from another router then I don't have a problem. As an example suppose you have a 3920 with two hosts running NetBIOS connected to ports 19 and 20. The 3920 is configured with a TrCRF having 0x81 as the ring number and both ports are assigned to this TrCRF. The TrCRF is a child of a TrBRF with the default bridge number 0xf. The router is connected to port 10 which also is assigned to the TrCRF with ring 0x81. On the router you would configure: source-bridge ring-group 100 >dlsw statements int tok 0 ring speed 16 (same as the 3920) source-bridge 129 1 100 (any bridge number, only source-br-target has to be unigue) source-bridge spanning and on another router also connected to the 3920 on port 15 attached to a TrCRF with a ring number of 0x30 which is a child of a different TrBRF with the defaolt bridge number 0xf, you would configure source-bridge ring-group 100 (could be different but this is best practice) >dlsw statements int tok 0 ring speed 16 source-bridge 48 3 100 (any bridge number, totally independent) source-bridge spanning This router should be able to see the hosts in reachability cache. If the second router had an ethernet source then there are no ring numbers configured, only a bridge-group, which can be any number allowed. HTH rather than adding to the confusion. Fred. Chuck Larrieu wrote: > > If I wanted to run DLSw across a 3920, then on my router ( whose token ring > port is plugged into a 3920 ) I would use the source-bridge > source-ring-number bridge-number target-ring-number comand. The source ring > would be identical to the TrCRF ring, the bridge would be the TrBRF, and the > target ring would be the DLSw virtual ring, as confgured under DLSw. Is that > correct? > > Sorry if this is a bit disjointed. I'm working from home today and the > family seem to think that if they are on vacation, so am I. > > Any thoughts would be appreciated. > > Chuck Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=30762&t=30566 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: RIF RC Field Question [7:30637]
Yes the spec says the length values are even values between 2 and 30, but I have never seen any support for greater than 7 hops (maybe a sheltered existence). Isn't the practical limit still the original IBM spec with the length limit of 18? The 802.5 spec says ".. 18 bytes being the minimum that must be supported." Would you really want a network with 13 hops? And if there is a test question on max hops would you answer 7 or 13? Cheers, Fred. Priscilla Oppenheimer wrote: > > The Length field in the RC field indicates the total length of the RIF. > Length values will be even values between 2 and 30 inclusive. > > Source-route bridging is documented in Annex C of IEEE 802.1D MAC Bridges. > You can get it for free now from IEEE. There's no need to rely on the > sloppy work of authors who pump out multiple books per year. ;-) > > Get the IEEE docs here: > > http://standards.ieee.org/getieee802/ > > Priscilla > > At 08:04 PM 1/1/02, Jason wrote: > >All, > > > >Is the length field in the RC of a RIF the total size of the RIF or the > >total size of the RD? > > > >According to the Rossi paper it is the total length of the RIF. > > > > Pg 5 "Bits 12-8 (next 5) bits descrige the total length of the RIF > >represented in bytes" > > > > Example from the Rossi paper : 0830 00a1 014f 01e0 (Page 5) > > > >However, in the Lammle/Swartz Study guide it is the total length of the RD. > > > > Pg 694 "The Length field is the number of bytes used by the route > >descriptors." > > > > Example from the Study Guide : 0490 020b 1000 (answer C question > 20) > > > >Any and all help would be appreciated. > > > >Thanks > >js > > > Priscilla Oppenheimer > http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=30765&t=30637 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: TokenRing MAC [7:21640]
bit as 0. This bit is the I/G bit (Individual/Group) bit. A source address is always an individual address so the bit is used in source addresses to indicate the presence of a RIF. Note that I am talking on a bit level here. One IBM vendor address is 10 00 5A, but the 1 here is 0001, so the MSB is still zero. If the source address is 10 00 5A 12 34 56, then if there is a RIF the source address will appear as 90 00 5A 12 34 56. HTH, Fred. Fanglo wrote: > > >From RIF the MSB is RII then make me confused if all the token ring mac > addresses are with leading zero? > > Regards, > Fanglo Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=21753&t=21640 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Reading the show int token ring command [7:23640]
Right. One thing that is a little out is BW 4000MB and ring speed 16 Mbps. Fred Dennis Laganiere wrote: > > I just wanted to double-check myself. The line #9 from the following "show > interface token-ring 0" output says... > > 1.) TokenRing 0 is up, line protocol is up > 2.) Hardware is Dual Token Ring, address is .3080.5fca (bia > .3080.5fca) > 3.) Internet address is 1.0.0.7, subnet mask is 255.0.0.0 > 4.) MTU 8136 bytes, BW 4000 Kbit, DLY 630 usec, rely 255/255, load 1/255 > 5.) Encapsulation SNAP, loopback not set, keepalive set (10 sec) > 6.) ARP type: SNAP, ARP Timeout 4:00:00 > 7.) Ring speed: 16 Mbps > 8.) Single ring node, Source Route Transparent Bridge capable > 9.) Source bridging enable, srn 1 bn 2 trn 1000 (ring group) > 10.) Proxy explorers disable, spanning explorer enabled, NetBIOS cache > disable > 11.) Group Address: 0x, Functional Address: 0x011A > > local ring number - 1 > bridge number - 2 > ring group - 1000 > > Right? > > --- Dennis Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=23698&t=23640 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ECP Replacment [7:24571]
for the ECP1 and ECP2 courses have a new course and a new company. The first classes are 26 Nov and 10 Dec. Go to www.netmasterclass.net to view the course outline. Cheers, Fred. zapeta zape wrote: > > Hello guys, > I was planning to ECP1 next month now there are gone..Do yu guys know any > other traning program? > Thanks > Zap > > _ > Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=24604&t=24571 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: SRB and 3920 questions, please help [7:24734]
and a child VLAN. The TrBRF is the parent, the TrCRF is the child. The TrBRF is the virtual bridge, TrCRF's belong to a given TrBRF. 3920 ports are assigned to a TrCRF. The VLAN IDs are used internally on the 3920 and are independent from the bridge or ring numbers. There is a good tuitorial on the CD or CCO under the 3920 section. When you have two To interfaces, you can have them on the same ring or on different rings. For the same ring: Configure the TrBRF first, this is the parent vlan. Assign a bridge number (default is F) and a vlan id. Next configure a TrCRF, this is the child vlan. Assign a vlan ID, tie it to the TrBRF, and configure the ring number (in hex), and the bridging mode (SRT or SRB). Next assign ports to the TrCRF. If you assign multiple ports to the TrCRF they are on the same ring. With the single TrBRF defined you can tie multiple TrCRF's to it with different ring numbers. These will be bridged. There is no router interface configuration necessary other than ring speed to bridge between the two rings. You can give the To interfaces and the TrBRF IP addresses in the same net and ping between them. For your configuration you are not bridging on the 3920, you are bridging on the router. This is done if you are configuring DLSW, for instance. When you have configured the TrCRf for ring 2 this is the source ring used on the To interface. You can use any bridge number to the router virtual ring 100. For DLSW use the source-bridge spanning command and, of course, configure ring speed. Hope this isn't too confusing, Fred. Jerry Seven wrote: > > Hi, > > I have several Token ring switch questions: > > Router R1 has interface To0 connects to token ring network, and it's the > only device on it besides 3920, on 3920 I configured the bridge number 1 and > vlan 10 for TrBRF, ring number 2 and vlan 20 for TrCRF. > > Questions: > > 1) Why should I configure vlans for TrBRF and TrCRF, what are they for? > > 2) If I enable SRB on R1, what's the bridge number and ring number should I > choose in order to be consistent to 3920 configuration? Should I use > different bridge ID and same ring ID as follows: > > source-bridge ring-group 100 > interface To0 > source-bridge 2 2 100 > > Any help is greatly appreciated, > > J > > _ > Do You Yahoo!? > Get your free @yahoo.com address at http://mail.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=24756&t=24734 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ARP - What protocols support it. [7:24738]
IP - ARP, AppleTalk - AARP, IPX - no. Dave Shine wrote: > > Does anyone know what protocols do or better yet do > not support ARP? > > D.S. > > __ > Do You Yahoo!? > Make a great connection at Yahoo! Personals. > http://personals.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=24757&t=24738 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: SRB and 3920 questions, please help [7:24734]
Jerry: The way the Token Ring VLANs are set up there is a parent VLAN and a child VLAN. The TrBRF is the parent, the TrCRF is the child. The TrBRF is the virtual bridge, TrCRF's belong to a given TrBRF. 3920 ports are assigned to a TrCRF. The VLAN IDs are used internally on the 3920 and are independent from the bridge or ring numbers. There is a good tuitorial on the CD or CCO under the 3920 section. When you have two To interfaces, you can have them on the same ring or on different rings. For the same ring: Configure the TrBRF first, this is the parent vlan. Assign a bridge number (default is F) and a vlan id. Next configure a TrCRF, this is the child vlan. Assign a vlan ID, tie it to the TrBRF, and configure the ring number (in hex), and the bridging mode (SRT or SRB). Next assign ports to the TrCRF. If you assign multiple ports to the TrCRF they are on the same ring. With the single TrBRF defined you can tie multiple TrCRF's to it with different ring numbers. These will be bridged. There is no router interface configuration necessary other than ring speed to bridge between the two rings. You can give the To interfaces and the TrBRF IP addresses in the same net and ping between them. For your configuration you are not bridging on the 3920, you are bridging on the router. This is done if you are configuring DLSW, for instance. When you have configured the TrCRf for ring 2 this is the source ring used on the To interface. You can use any bridge number to the router virtual ring 100. For DLSW use the source-bridge spanning command and, of course, configure ring speed. Hope this isn't too confusing, Fred. Jerry Seven wrote: > > Hi, > > I have several Token ring switch questions: > > Router R1 has interface To0 connects to token ring network, and it's the > only device on it besides 3920, on 3920 I configured the bridge number 1 and > vlan 10 for TrBRF, ring number 2 and vlan 20 for TrCRF. > > Questions: > > 1) Why should I configure vlans for TrBRF and TrCRF, what are they for? > > 2) If I enable SRB on R1, what's the bridge number and ring number should I > choose in order to be consistent to 3920 configuration? Should I use > different bridge ID and same ring ID as follows: > > source-bridge ring-group 100 > interface To0 > source-bridge 2 2 100 > > Any help is greatly appreciated, > > J > > _ > Do You Yahoo!? > Get your free @yahoo.com address at http://mail.yahoo.com > > Message Posted at: > http://www.groupstudy.com/form/read.php?f=7&i=24734&t=24734 > -- > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: ARP - What protocols support it. [7:24738]
IP - ARP, AppleTalk - AARP, IPX - no. Dave Shine wrote: > > Does anyone know what protocols do or better yet do > not support ARP? > > D.S. > > __ > Do You Yahoo!? > Make a great connection at Yahoo! Personals. > http://personals.yahoo.com > > Message Posted at: > http://www.groupstudy.com/form/read.php?f=7&i=24738&t=24738 > -- > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Token Ring Interface Number, Question [7:25833]
is the physical ring that the router is connected to, the trn can be another physical ring or a virtual ring (ring group). The local ring is the srn. What were the options given? HTH, Fred. Derek Gaff wrote: > > Thank you for the reply's. > > I did consider that the value was in hex and after I did the conversion from > Decimal to Hex the value was still not an available option. I have being > looking for this answer on the web and I found the following information at > http://www.sitamoht.com/cciewe.html. > > Where to find the token ring number on the "show interface to 0" display > > a.. Look at the line that says "Source Bridging enabled, srn XX bn X trn > XX" > So as an example. lets say we do a "show int tok 0" at the enable prompt, > and look at the line and you will see the following > Source Bridging enabled, srn 10 bn 1 trn 20 > > The "trn" is the line stands for token ring number. And in that example > the token ring number is 20 > > As you can see the information is stating that the Token Ring Number is 20 > after the statement trn. So were do I go from here. I really need to find > this Information. > > Cheers > > Derek > > have given some answers in hex, 0x195 is 405 decimal. Routers use > decimal but will accept an entry in hex. > > HTH, Fred. > > Derek Gaff wrote: > > > > Can anybody tell me what the Local Ring Number is on this interface > > configuration below. In a recent cisco exam I was asked this. I was sure it > > was the srn, but that was not listed in the available options. Can anybody > > please clear this one up for me. > > > > Example: > > Chicago# show interfaces tokenring 0/0 > > TokenRing0/0 is up, line protocol is up > > Hardware is cxBus Token Ring, address is 4000.0279.59f1 (bia > .30c0.95c3) > > MTU 4464 bytes, BW 16000 Kbit, DLY 630 usec, rely 255/255, load 1/255 > > Encapsulation SNAP, loopback not set, keepalive set (10 sec) > > ARP type: SNAP, ARP Timeout 4:00:00 > > Ring speed: 16 Mbps > > Multiring node, Source Route Transparent Bridge capable > > Source bridging enabled, srn 405 bn 1 trn 415 (ring group) > > proxy explorers disabled, spanning explorer enabled, NetBIOS cache > disabled > > Group Address: 0x, Functional Address: 0x0080011A > > Ethernet Transit OUI: 0xF8 > > Last input 0:00:00, output 0:00:00, output hang never > > Last clearing of "show interface" counters 1d02 > > Output queue 0/40, 0 drops; input queue 0/120, 1323 drops > > Five minute input rate 11000 bits/sec, 7 packets/sec > > Five minute output rate 8000 bits/sec, 9 packets/sec > >1196542 packets input, 281524050 bytes, 1323 no buffer > >Received 194383 broadcasts, 0 runts, 0 giants > >0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abor > > 1093796 packets output, 183872185 bytes, 0 underruns > >0 output errors, 0 collisions, 0 interface resets, 0 restarts > >1 transitions > > > > Cheers > > Derek Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=25883&t=25833 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: What book Caslow [7:26118]
first edition, corrections, and new topics. If anyone wants a worn, marked copy of the first edition they can have it for the cost of shipping. Fred. Joselito Nuqez wrote: > > What book Caslow ?? (Cisco Certification Bridges, Routers, and Switches > ) > 1ra edition or second edition > > JNC Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=26133&t=26118 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: What book Caslow [7:26118]
Repost, my first line didn't make it. Go with the second edition. It contains everything in the first edition, corrections, and new topics. Fred. Joselito Nuqez wrote: > > What book Caslow ?? (Cisco Certification Bridges, Routers, and Switches > ) > 1ra edition or second edition > > JNC Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=26161&t=26118 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Can somebody recommend good CCIE lab test training class? [7:26445]
Have you passed your written test? Assuming so, there are many references in the archives of ccielab. There are several options available and you can choose based on cost, schedule, and location. I recommend the netmasterclass RS-NMC-1 course, taught by the CCIE's who wrote the book, and who developed the BRS and ECP1/2 courses, Caslow and Pavlichenko. (note - I am affiliated with NMC.) http://www.netmasterclass.net for details. Do not enroll with anyone claiming to be teaching the ECP1 or ECP2 class; Mentor Technologies is in Chapter 7 Bankruptcy, and the principal instructors for the old ECP courses are now teaching the one day lab RS-NMC-1 and RS-NMC-2 courses. HTH, Fred. Eric An wrote: > > I am preparing for the lab test and considering to take a training class, > even though I have a pretty good home lab and access to all types of > equipment at work. > > I wonder if anyone can recommand a good train class. > > Thanks > > Eric Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=26445&t=26445 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Can frame-relay multipoint sub-interfaces support inverse [7:26446]
Fred "Ng, Kim Seng David (David)" wrote: > > Hi, > > I was a bit confused after reading the Ciscopress CCNP Support book and > Caslow's ccie book. Can frame-relay multipoint sub-interfaces support > inverse arp DLCI mappings?? Ciscopress Support book seem to say no (not > directly though) but Caslow's book says yes. Thanks in advance... > > David Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=26446&t=26446 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
