Re: Hub-to-Switch connection problem
Yikes! Before you go CAPS LOCKING people with wrong advice, you might want to check your answer. Hubs do not work at L2. Crossover is definitely the right cable to use, but not for your reason. Rule should go roughly like this: 1. Hub/Switch to anything but another Hub/Switch is straight-through. 2. Everything else is crossover. --- Elias Aggelidis [EMAIL PROTECTED] wrote: You are making a BIG MISTAKE ! Switches are working on L2 as and HUBs. So when you are connecting a Hub to a switch you must use a crossover cable ! Regards Elias Aggelidis - Original Message - From: "Bradley J. Wilson" [EMAIL PROTECTED] To: "cisco" [EMAIL PROTECTED] Sent: Friday, December 01, 2000 2:30 PM Subject: Hub-to-Switch connection problem Okay gang, I had an interesting and annoying situation yesterday morning, and I'd like to see if anyone else has had an experience like this: My client was installing an older BayStack 301 switch into their existing network, which consisted of a Bay Access Node router, as well as four stacked SynOptics LattisHubs. The router was experiencing excessive collisions, hence the installation of the switch. So we installed the switch and cabled the router to it, moved all the "power users" directly onto the switch, and left the other users attached to the hub. We attached the hub to the switch via a straight-through cable. The users who were directly connected to the switch had no problem accessing the network and Internet. The users on the hub were dead in the water. We tried swapping out the cable between the hub and switch, tried plugging either end into different ports, tried flipping the MDI/MDI-X switch, and nothing worked. The only thing that *did* work was using a *crossover* cable between the hub and the switch. Now, the rule (which I gleaned from this newsgroup, btw) is that when you're connecting devices at different OSI layers, you use a straight-through - e.g. PC to hub, PC to switch, switch to router, hub to switch - that's all straight-through. You use a crossover when you're connecting devices at the same OSI layer - router to router, switch to switch, hub to hub, PC to PC. In the situation yesterday, a straight-through seemed logical, as we were trying to connect a hub to a switch. Am I wrong here? Why did the crossover work? Thanks, BJ P.S. sorry for the Bay-centric example...I'm trying to get them to change that. ;-) _ 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] __ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.yahoo.com/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Extended Ping and data pattern
It is used to stress test WAN connections. I don't remember the details, but I think the theory is certain telco equipment fail and detect certain data patterns incoorrectly. WAN lines can work sometimes for certain data/apps but for some others they don't. It's weird, but I used to troubleshoot WAN lines and it happens enough. Run data patterns like 0x or 0x or a variety of others. If any one of them fail, call the telco and tell them. --- John lay [EMAIL PROTECTED] wrote: Guys, While studying the CIT. I read that using the extended ping you can change the data pattern (0xABCD the default) to debug data sensitivity problems on CSU/DSUs or to detect cable-related problems such as crosstalk. I don't understand that, did anybody tried it. Thanks a lot ___ Tired of slow Internet? Get @Home Broadband Internet http://www.home.com/xinbox/signup.html _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] __ Do You Yahoo!? Yahoo! Shopping - Thousands of Stores. Millions of Products. http://shopping.yahoo.com/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Concentrator 3000 and PIX
What do you mean try to talk to each other? Via the public or private interface? Via routing protocols? The PIX as a tunnel gateway? Could you elaborate? Michael --- Jim Bond [EMAIL PROTECTED] wrote: Hello, I'm trying to have a PIX talk to a corportate Concentrator 3030. The problem I have is PIX gets ip address from ISP by DHCP. Is there anyway to do this? Thanks in advance. Jim __ 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] __ 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: CCIE written using the univer cd?
UniverCD is Cisco's documentation CD. It's also online at www.cisco.com/univercd. It is the only resource you will have in the CCIE lab, so it is suggested you do a lot of your studying with this so you will get used to searching for information in here. --- Peter Abraham [EMAIL PROTECTED] wrote: It is my understanding that the univer CD is a very good resource for preparing for the CCIE written exam. What is the univer CD? How may I obtain one? Thank you. Peter. _ 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] __ 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: Bruce Caslow
I took the course last week. Fred Ingham (who edited about 10 chapters of Bruce's book) taught the class. It was a very good class. I averaged about 15 hour days, starting from 8:30-9 until they kicked my out at 12 midnight. So yes, you get to work into the wee hours, past all the other classes that leave at 5pm. Fred made no claims as to how many people pass and specifically said that taking the class without much additional practice will make it very hard. The class does cover most of what is needed though. Most but not all, in that Cisco will use some weirder configs and stricter ways to configure things. Overall, all the past posts that said this class is the best... I concur. Michael Le --- info [EMAIL PROTECTED] wrote: 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] __ Do You Yahoo!? Yahoo! Messenger - Talk while you surf! It's FREE. http://im.yahoo.com/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: CDP and LS-1010
I remember something about ATM not supporting CDP, or you having to do something special to get it to work. Don't remember what though. Mike --- Robert Padjen [EMAIL PROTECTED] wrote: Check your code versions - there are CDP bugs that could cause this. --- Randy Carlson [EMAIL PROTECTED] wrote: I second that. We are having problems seeing our (lone) LS-1010 with the CDP mapper in CiscoWorks. Does a LS-1010 respond to CDP queries?? V/R FRC Kevin Wigle wrote: Dear GroupStudy, A question came up about CDP and I noticed something interesting. The LS-1010 is on the same subnet as a 7505. When I give the command "sh cdp neigh" on the 7505 the LS-1010 is listed. (as well as about 5 other devices on the subnet) But, when I give the command "sh cdp neigh" on the LS-1010, I get back nothing. I gave the command "cdp run" but still get nothing from the 1010. Anyone got any ideas on where the cdp info is on a LS-1010??? Kevin Wigle CCDP/CCNP _ 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] = Robert Padjen __ Do You Yahoo!? Yahoo! Messenger - Talk while you surf! It's FREE. http://im.yahoo.com/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] __ Do You Yahoo!? Yahoo! Messenger - Talk while you surf! It's FREE. http://im.yahoo.com/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Telnet session question - very perplexed on this one
I used to work on the TAC and remember a problem like this. It was something with the Sun box. I don't know why it only happens on that one router, but if I remember correctly, that TAC case had the same problem. If I didn't know about that case, then I would say it would be the link between the Sun and the Cisco. I don't remember the exact case so you might want to open a TAC case. Good luck! Mike --- "Raul F. Fernandez" [EMAIL PROTECTED] wrote: Dear folks, I have a bit of a problem. I have a specific router. This router becomes very unstable when I telnet from our management platform. If I telnet from any other router in the domain to it, I have no problems. So CISCO to CISCO no problem but from the management platform (SUN ) it goes to poop. Errors begin to increment on the serial interface as carrier transitions. Also from debugging the TCP connection for the telnet session I keep getting bad seg from the management platform and the window is screwed. I can telnet form this management paltform to any of the other routers on the domain and I do not have this problem...just this one. The router has been replaced 2 times so has the ram and flash and the IOS was upgraded also the csu/dsu and v35 cabel have been replaced. I have looked on the CISCO site for bugs pertaining to 11.1 - 11.2 but nothing glaring. This is a standard 2501 with 16 megs of ram. This is weird and wanted to see if anyone has run into this before and see what you came up with. Sincerely, Raul F. Fernandez __ Do You Yahoo!? Yahoo! Messenger - Talk while you surf! It's FREE. http://im.yahoo.com/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: figuring out ip on other side of router
If you have access to the router you could check the WAN interface and infer from there if it is /30. If ISP has Cisco router, maybe CDP is enabled and you can see it that way. Not probable though. You can traceroute from there too. If you can't access it and you also have firewall, then I don't know. If you don't access, maybe there's a reason why you shouldn't get the ip address. Hehehe. Mike --- Langa Kentane [EMAIL PROTECTED] wrote: Hi. I have a 2Meg link to our ISP. What I want to do is to figure out the IP address on their side of the WAN. How do I go about doing this. I cannot do a traceroute because of our firewall. Please help LANGA KENTANE | Tel: + 27 11 290 3218 Security Administrator| Cell: +27 82 606 1515 Discovery Health | mailto:[EMAIL PROTECTED] http://www.discoveryhealth.co.za | http://members.xoom.com/evablunted _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] __ Do You Yahoo!? Yahoo! Messenger - Talk while you surf! It's FREE. http://im.yahoo.com/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: [Re: External Internal BGP]
Couldn't you also have RB2 route-reflect the info to RB1? Mike --- ElephantChild [EMAIL PROTECTED] wrote: On 18 Oct 2000, FAISAL ATHAR wrote: Can you please describe this in detail with some example. AS64512 AS64513 AS64514 10.0.0.0/16 10.1.0.0/16 10.2.0.0/16 RA1===RB1 RB3===RC1 \ / RB2 - means uses an IGP = means uses BGP In this setup, RB3 can't carry to RC1 the info that 10.0.0.0/16 is in AS 64512, since the IGP only tells it that RB2 is the next hop on the way to it. That means that the loop detection feature of BGP, and indeed most of its path selection mechanisms, is unavailable. To fix it, you have to make RB1 and RB3 peer together, like this: AS64512 AS64513 AS64514 10.0.0.0/16 10.1.0.0/16 10.2.0.0/16 RA1===RB1===RB3===RC1 \ / RB2 Note that RB2 doesn't need to peer with either RB1 or RB3, or indeed to run BGP at all. ElephantChild [EMAIL PROTECTED] wrote: On 18 Oct 2000, FAISAL ATHAR wrote: Can any one explain the purpose of Internal BGP.According to my knowledge it it used between sites with in the same autonomous system. True, assuming you mean routers. But Question is that BGP is Exterior routing protocol,develop mainly to connect two different autonomous systems, then what is the purpose of Using Internal BGP, within the same autonomous sytems although we could use any other Interior routing protocol there. You need internal BGP to carry path information between external BGP routers, eg for a transit AS. -- Bungee jumping and skydiving are for wimps. If you want to experience true gut-wrenching terror, have children. --Dusty Rhoades. _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] __ Do You Yahoo!? Yahoo! Messenger - Talk while you surf! It's FREE. http://im.yahoo.com/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: NAT twice, will this work?
This should work fine as long as it's all static translation, since you're coming from nat outside interface. If you arp from inside the DMZ, only the firewall should respond since the ARP will be for a destination of 172.24.100.101. NAT will respond to ARPs on it's nat ouside interface. The router on the other is translating a source from 172.24.100.101, so shouldn't care about an ARP to that address. Mike --- Jason Jin [EMAIL PROTECTED] wrote: I have a situtation that I need to NAT twice, once on router, and then again on firewall-1. I can't figure out wheather this will ever work , here 's the our network diagram: WAN DMZINTERNAL -| Router ||Firwall-1|--|HostA|-- we are assigned address space 32.x.x.192-32.x.x.207 from out ISP( WAN), since our DMZ is using 172.24.100.0/24 the router is doing static NAT to this range. our internal network is 10.10.1.0/24. The IP address as folowes: Router = interface on DMZ 172.24.100.3 ( NATed) Firewall-1: interface (qfe0) on DMZ 172.24.100.2 interface (qfe1) on internal 10.10.1.2 HostA: since I need to access host A from WAN side, hostA need to be NAT'ed at two place , at firewall-1 it NAT from 10.10.1.101 to 172.24.100.101 at Router it is NAT from 32.x.y.101 to 172.24.100.101. I have setup the firewall rules , route and arp entry on firewall-1 for HostA, and address translation work fine for hostA, if I connect from DMZ. Now here's my problem: if I want connnect from hostB from wan side, the packet destined for 32.x.y.101 , the destination first NATed to 172.24.100.101 , then pickup by firwall-1 who's listen for arp request, NATed to 10.10.1.101 ? will this work? one question : when somebody the DMZ sent out a arp request for 172.24.100.101, the firwall-1 will respond , but will router respond too, since it is doing NAT for this address as well? any help is much appreciated. TIA, Jason _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] __ Do You Yahoo!? Yahoo! Messenger - Talk while you surf! It's FREE. http://im.yahoo.com/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: HSRP Lab... :-(
If you have a second gateway set, a host will eventually use that second gateway. HSRP works a lot faster than this, since it doesn't have to wait for the ARP to timeout. Other than that, I don't see how RouterB would route the packets. I don't think PCs broadcast for default gateways, but I could be wrong. Mike --- Bharat Suneja [EMAIL PROTECTED] wrote: Hi all, I was doing a HSRP lab. Two routers have their E0 connected to hub. A Win95 PC is also connected to the hub. S0 of both routers connected to a remote router with a PC on E0 of remote router. Routing Protocol: EIGRP. Now, before configuring HSRP on the local routers, if I disconnect E0 on Router A from the hub, the PC connected to the hub should not be able to forward packets because its default gateway (Router A) is down. However, I find that the PC can still communicate with the remote network - the second router (Router B) forwards the packets!! This is something I didn't know before - and the OS on the PC is Windows 95!!! My questions: 1. Is this a Win95 feature ??? (doubtful as it sounds!!) 2. Is this something to do with RDP ??? 3. Is this something to do with ARP ??? (PC broadcasts for default gateway and Router B replies when router A is down??). If 2 and 3 are true, what's the purpose of HSRP ??? Thanks in advance, Bharat Suneja _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] __ Do You Yahoo!? Yahoo! Messenger - Talk while you surf! It's FREE. http://im.yahoo.com/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: WHIZZ KIDS WHO HAVE THE CCIE number
I don't know if he is the youngest to ever get it, but he's younger than any of the other responds. I know a guy at Cisco who was 17 when he got his CCIE. He's got R/S and ISP Dial. He's around 21 now I think. He used to work on the TAC but is now a consultant for Cisco. Mike --- Brian [EMAIL PROTECTED] wrote: 18, works for global data systems in louisiana http://www.globaldatasys.com Brian On Fri, 13 Oct 2000, McCallum, Robert wrote: Here is a little poser for you all. Who is / was the youngest CCIE and what was his / her age when they attained the CCIE? Robert McCallum _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] --- Brian Feeny, CCNP, CCDP [EMAIL PROTECTED] Network Administrator ShreveNet Inc. (ASN 11881) _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] __ Do You Yahoo!? Get Yahoo! Mail - Free email you can access from anywhere! http://mail.yahoo.com/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Companies requiring proof of previous salary
I strongly disagree with this. Previous salary says a lot about how valuable your last employer thought you were to them specifically and how much they felt they could pay you and still keep you. Almost all employers would probably counteroffer you if you said you were going to leave. My last two did, by upwards of 20%. Does that mean my skill level jumped 20% right after I decided to leave and they decided they wanted me a little more? Why should my new potential employer pay me based on what someone else thinks I'm worth? Why should they leave their business decisions up to someone else? My last company thought of me as a cost center. I was there to support their network. My new company, where I am a consultant, bills me out at $200/hr (pays me nowhere near that much... heheh) and definitely considers me a profit center. I bring them money and they in turn think of me as more valuable. Did I jump skill level from the last day at my last job and the first day of my new job no. But my value to my employer did. And that's what counts. Mike --- whatshakin [EMAIL PROTECTED] wrote: Previous salary says a lot about a persons skill level. After all, if you are not worth your former or current employer paying you what you are asking for, why should another employer pay you that much? Granted, it is a well known fact that many employees often do not recieve the benefits they deserve if they remain at one company for more than five years or so. However, your salary is probably not too far off what a job change will get you. This being the case, it should not be too embarassing telling your prospective employer what you currently make. If it is, you are probably not worth what you are shooting for. There are exceptions to the rule. - Original Message - From: Brian [EMAIL PROTECTED] To: Stephane Wantou Siantou [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Sent: Sunday, October 08, 2000 3:26 PM Subject: Re: Companies requiring proof of previous salary On Sun, 8 Oct 2000, Stephane Wantou Siantou wrote: Hey Guys, I recently had an interview with a company that requires proof of my previous salary. I don't want to show them anything about my previous salary. How do you think I can go about it? Thanks I would tell them to take a leap. Your previous salary is *no* basis for what you are worth to them. It shouldn't even matter. Brian **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ 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] --- Brian Feeny, CCNP, CCDP [EMAIL PROTECTED] Network Administrator ShreveNet Inc. (ASN 11881) **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ 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] **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ 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] __ Do You Yahoo!? Yahoo! Photos - 35mm Quality Prints, Now Get 15 Free! http://photos.yahoo.com/ **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ 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: what is mean reverse telnet ?
It means connecting from the router out through the async ports. If you have an access server with 8 async ports, you can connect the octopus cables to 8 other routers. This way you can easily manage your remote routers in case your inband connection dies, ie your wan connections dies and you dial into your access server and check what's wrong. Mike --- "Sim, CT (Chee Tong)" [EMAIL PROTECTED] wrote: Dear Friends, May I know what is meant by reverse telnet? How we use it with access server? Tong == De informatie opgenomen in dit bericht kan vertrouwelijk zijn en is uitsluitend bestemd voor de geadresseerde. Indien u dit bericht onterecht ontvangt wordt u verzocht de inhoud niet te gebruiken en de afzender direct te informeren door het bericht te retourneren. == The information contained in this message may be confidential and is intended to be exclusively for the addressee. Should you receive this message unintentionally, please do not use the contents herein and notify the sender immediately by return e-mail. == **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ 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] __ Do You Yahoo!? Yahoo! Photos - 35mm Quality Prints, Now Get 15 Free! http://photos.yahoo.com/ **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ 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: strange scenario
Where are the healthy ping times you mentioned? Pinging from hop 19 to 20 took 583 ms. The traceroute showed that it took 278 ms to get to hop 19 and 861 ms to get to hop 20. That's a difference of exactly 583 ms. Seems like the latency is between 19 and 20... I don't see anything weird about it though. Michael --- "Yee, Jason" [EMAIL PROTECTED] wrote: hi guys and gals One strange scenario that happens is that when I ping and traceroute to a destination 202.161.128.202 from internet : It shows high latency times between the last 2 hops : 312 ms12 ms12 ms 203.117.0.90 414 ms24 ms24 ms f0-0-r21.cyberway.com.sg [203.117.0.132] 513 ms15 ms14 ms 61.8.230.1 614 ms23 ms24 ms 61.8.254.91 7 119 ms 118 ms 120 ms 210.175.161.137 8 120 ms 119 ms 119 ms tyo-i1.tyo-core1.ntt.net [210.175.160.43] 9 222 ms 223 ms 221 ms sjc-i1.tyo-sjc1.ntt.net [210.175.160.98] 10 224 ms 225 ms 225 ms p1-1-2-3.r06.plalca01.us.bb.verio.net [129.250.1 6.21] 11 233 ms 232 ms 232 ms p4-1-0-0.r00.lsanca01.us.bb.verio.net [129.250.2 .114] 12 238 ms 237 ms 236 ms p1.att.r00.lsanca01.us.bb.verio.net [129.250.9.3 4] 13 240 ms 239 ms 239 ms gbr3-p50.la2ca.ip.att.net [12.123.28.130] 14 226 ms 226 ms 227 ms gbr4-p20.sffca.ip.att.net [12.122.2.69] 15 234 ms 234 ms 234 ms gbr2-p100.sffca.ip.att.net [12.122.1.190] 16 236 ms 234 ms 234 ms gar1-p370.sffca.ip.att.net [12.123.13.61] 17 290 ms 291 ms 291 ms 12.123.195.21 18 292 ms 293 ms 291 ms 12.125.94.10 19 277 ms 279 ms 278 ms 202.161.130.21 20 861 ms 861 ms 861 ms 202.161.128.202 Trace complete. Pinging 202.161.128.202 with 32 bytes of data: Reply from 202.161.128.202: bytes=32 time=856ms TTL=238 Reply from 202.161.128.202: bytes=32 time=854ms TTL=238 Reply from 202.161.128.202: bytes=32 time=854ms TTL=238 Reply from 202.161.128.202: bytes=32 time=853ms TTL=238 However when I do a ping and traceroute on my second last router it shows healthy ping times between this router and the destination Routerping 202.161.128.202 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 202.161.128.202, timeout is 2 seconds: ! Success rate is 100 percent (5/5), round-trip min/avg/max = 580/583/584 ms Routertrace 202.161.128.202 Type escape sequence to abort. Tracing the route to 202.161.128.202 1 202.161.128.202 572 msec 572 msec 580 msec Why is this so and is there really a latency problem and if so at which point is latency at ? thanks Jason **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ 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] __ Do You Yahoo!? Yahoo! Photos - 35mm Quality Prints, Now Get 15 Free! http://photos.yahoo.com/ **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ 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: strange scenario
Where are the healthy ping times you mentioned? Pinging from hop 19 to 20 took 583 ms. The traceroute showed that it took 278 ms to get to hop 19 and 861 ms to get to hop 20. That's a difference of exactly 583 ms. Seems like the latency is between 19 and 20... I don't see anything weird about it though. Michael --- "Yee, Jason" [EMAIL PROTECTED] wrote: hi guys and gals One strange scenario that happens is that when I ping and traceroute to a destination 202.161.128.202 from internet : It shows high latency times between the last 2 hops : 312 ms12 ms12 ms 203.117.0.90 414 ms24 ms24 ms f0-0-r21.cyberway.com.sg [203.117.0.132] 513 ms15 ms14 ms 61.8.230.1 614 ms23 ms24 ms 61.8.254.91 7 119 ms 118 ms 120 ms 210.175.161.137 8 120 ms 119 ms 119 ms tyo-i1.tyo-core1.ntt.net [210.175.160.43] 9 222 ms 223 ms 221 ms sjc-i1.tyo-sjc1.ntt.net [210.175.160.98] 10 224 ms 225 ms 225 ms p1-1-2-3.r06.plalca01.us.bb.verio.net [129.250.1 6.21] 11 233 ms 232 ms 232 ms p4-1-0-0.r00.lsanca01.us.bb.verio.net [129.250.2 .114] 12 238 ms 237 ms 236 ms p1.att.r00.lsanca01.us.bb.verio.net [129.250.9.3 4] 13 240 ms 239 ms 239 ms gbr3-p50.la2ca.ip.att.net [12.123.28.130] 14 226 ms 226 ms 227 ms gbr4-p20.sffca.ip.att.net [12.122.2.69] 15 234 ms 234 ms 234 ms gbr2-p100.sffca.ip.att.net [12.122.1.190] 16 236 ms 234 ms 234 ms gar1-p370.sffca.ip.att.net [12.123.13.61] 17 290 ms 291 ms 291 ms 12.123.195.21 18 292 ms 293 ms 291 ms 12.125.94.10 19 277 ms 279 ms 278 ms 202.161.130.21 20 861 ms 861 ms 861 ms 202.161.128.202 Trace complete. Pinging 202.161.128.202 with 32 bytes of data: Reply from 202.161.128.202: bytes=32 time=856ms TTL=238 Reply from 202.161.128.202: bytes=32 time=854ms TTL=238 Reply from 202.161.128.202: bytes=32 time=854ms TTL=238 Reply from 202.161.128.202: bytes=32 time=853ms TTL=238 However when I do a ping and traceroute on my second last router it shows healthy ping times between this router and the destination Routerping 202.161.128.202 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 202.161.128.202, timeout is 2 seconds: ! Success rate is 100 percent (5/5), round-trip min/avg/max = 580/583/584 ms Routertrace 202.161.128.202 Type escape sequence to abort. Tracing the route to 202.161.128.202 1 202.161.128.202 572 msec 572 msec 580 msec Why is this so and is there really a latency problem and if so at which point is latency at ? thanks Jason **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ 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] __ Do You Yahoo!? Yahoo! Photos - 35mm Quality Prints, Now Get 15 Free! http://photos.yahoo.com/ **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ 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]
