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Re: Andrew Partan: Re: MAI.net filters.
by Ravi Chandra 28 Apr '97

28 Apr '97

> > ------- Forwarded Message > > Date: Mon, 28 Apr 1997 11:20:17 -0400 (EDT) > From: Andrew Partan <asp(a)partan.com> > Sender: owner-nanog(a)merit.edu > To: SEAN(a)SDG.DRA.COM (Sean Donelan) > cc: nanog(a)merit.edu > Subject: Re: MAI.net filters. > > > Any luck tracking down the reason why some routers inside Sprint kept > > announcing the routes long after the source was removed during either > > the incident last Friday or the other incident on Feb 3-4, 1997? > > Part 2 of the problem (where all of the routes didn't go away even > after they were removed by the source) wasn't only w/in Sprint; it > was elsewhere as well. This has been tracked down to a cisco bug, > which has been found & they are working on a fix. > --asp(a)partan.com (Andrew Partan) > More specifically this bug is relevant to EBGP peergroup members. When there is a lot of churn, some of the EBGP peergroup members might not receive the withdrawn message. This will happen only if the EBGP neighbors have tons of update queued (ie unless the EBGP neighbors are receiving thousands of prefixes, this bug will not be seen.). Thus it is most likely to affect people using EBGP peergroups within the confederation. If you are not using EBGP peergroup, it will not have any problem. I already have the fix and should be available soon. The bugid is CSCdj08110. --ravi > ------- End of Forwarded Message >

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Mailing List Subscription
by ljones 28 Apr '97

28 Apr '97

Hello, Could some one please provide me any information on the appropriate methodology for subscribing and posting to this mailing list Thanks ahead of time, Larry Jones Email: lwj0(a)gte.com

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AGIS: ???
by Stephen Balbach 28 Apr '97

28 Apr '97

AGIS has been offline on the East Coast since about Tuesday. Im not sure of the scope, but it seems pretty catastrophic [for AGIS customers]. Checking www.agis.net/states.htm then pick any East Coast state and unless the ISP is multi-homed, all traceroutes stop at Pennsauken [cut to protect the innocent] 9 f1-0.pennsauken1.agis.net (192.157.69.19) 129 ms 185 ms 114 ms 10 * * * 11 * *^C * 12 ^C I estimate at least 25 smaller single-homed ISP's have been entirely cut off for days. AGIS NOC says it has MAE EAST problems (coinciding with the transition to the Ascend GRF Monday morning?). AGIS has been stateing that this is caused by SPAM attacks but I suspect thier upgrade to an OC-3 ATM backbone plus the GRF is at the heart. Anyone have any more info? .stb

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Re: Wow, AS7007!
by Scott Huddle 28 Apr '97

28 Apr '97

I don't understand this graph, is the scale off? It seems to avg around 250K BGP announcements?! -scott At 11:32 AM 4/28/97 -0400, Jake Khuon wrote: >### On Mon, 28 Apr 1997 10:32:50 -0400 (EDT), Cameo Wood <cameo(a)netsys.com> >### wrote to concerning "Re: Wow, AS7007!": > >CW> If you haven't seen it yet, a rather revealing view of friday's incident is >CW> available at >CW> http://www.merit.edu/~ipma//instability/daily_graph//mae-east/mae-east.flapg raph.970425.gif > >Also a very interesting graph showing number of announcements can be seen >at: > > http://www.merit.edu/~ipma/trends/mae-east/ann.gif > > >-- >/*===================[ Jake Khuon <khuon(a)Merit.Net> ]======================+ > | Systems Research Programmer, IE Group /| /|[~|)|~|~ N E T W O R K | > | VOX: (313) 763-4907 FAX: (313) 747-3185 / |/ |[_|\| | Incorporated | > +==[ Suite C2122, Bldg. 1 4251 Plymouth Rd. Ann Arbor, MI 48105-2785 ]==*/ > >

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Re: MAI.net filters.
by Brett D. Watson 28 Apr '97

28 Apr '97

[ savvis folks asking which versions have the "bug"] we just found that 11.1.7ca1 contains the "bug" but we haven't gotten an exact description of what the bug is. in general terms, it's only been described as: "a bgp router can be slow in withdrawing prefixes even though they've been withdrawn from the originator(s)." doesn't say much, does it? :) they're working on a fix. i'm afraid i dont' know which other versions have the same problem though. we only asked about a particular version we run. -brett

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Re: MAI.net filters.
by Sean Donelan 28 Apr '97

28 Apr '97

Any luck tracking down the reason why some routers inside Sprint kept announcing the routes long after the source was removed during either the incident last Friday or the other incident on Feb 3-4, 1997? >For those of you following the "incident" on Friday, I have now implemented >ip-based filters for MAI.NET and their downstream neighbors. This will prevent >MAI or their downstream neighbors from advertising routes other than their own. -- Sean Donelan, Data Research Associates, Inc, St. Louis, MO Affiliation given for identification not representation

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Internet Traffic Data
by Robert Olshansky 28 Apr '97

28 Apr '97

Hi, K Claffy at LANR suggested I contactb you. At GTE Labs we are working on design of IP backbone facilities for ADSL access services. One of the challenges is to be able to project traffic growth per ADSL useer for the next 3-5 years. Can you direct me to sources of the followinmg: (1) Measured internet traffic statitics at NAPs for the past two years. (Info available at NAP Web sites that I have found is only for the last 5-30 days.) (2) Some measurements of growth of traffic/user over the past two years. So, for a fixed or known user population ( eg a Univ campus or an ISP's modem pool) how has traffic per user grown? (3) Anything else that would be useful. So I would greatly appreciate it if you could direct me to some source. TX Bob *************************** Bob Olshansky Manager, Advanced Service Platforms Service Research Laboratory GTE Laboratories Inc. 40 Sylvan Road Waltham, MA 02254 Tel 617-466-2565 Fax 617-466-2650 ****************************

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Wow, AS7007!
by Stephen A Misel 28 Apr '97

28 Apr '97

I happened to be in one of our 7505 routers this afternoon when POP -- all of a sudden most of the internet disappeared! I immediately thought it was me, but looked around and saw this AS7007 broadcasting MY routes! It wasn't for all of our network space -- We have several /18's here, and it seemed only the first /24 of each CIDR was affected. When I found a workstation at the end of the /18, we got the whois info for 7007 -- Florida Internet Exchange, and called them. They claimed to have a customer broadcasting some bad routing information and unplugged their router. A few moments later, the internet stabilized and I started seeing real routes. Correct me if I'm wrong, but: (1) We're going to read about this in EVERY computer magazine, newspaper and TV as "the end of the internet?" (2) Access lists by backbone providers *should* have prevented this. (3) Does or does not the RADB and other routing registries (MCI's, etc) prevent this? I bet this hole will be patched up real soon! Steve

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Re: Ascend GRF400
by garyz＠savvis.com 28 Apr '97

28 Apr '97

Kent, Savvis only has the GRF1600 in productions, we have ordered a couple of the GRF400 for our test bed. The GRF1600 was the first and only router from NetStar, but NetStar already had planned the GRF400 b4 the Ascend days..... Gary Zimmerman V.P. of Network Engineering Savvis Communications Corp. email: garyz(a)savvis.com http://www.savvis.com Office: 314.719.2423 Address: 7777 Bonhomme Suite 1000 St. Louis, MO 63105 ---------- > From: Neil J. McRae <neil(a)domino.org> > To: Kent W. England <kwe(a)6SigmaNets.com> > Cc: salo(a)msc.edu; nanog(a)merit.edu > Subject: Re: Ascend GRF400 > Date: Monday, April 28, 1997 2:32 AM > > > Correct me if I am wrong, but I thought the GRF-400 was an Ascend product > > and the GRF-1600 is the NetStar GigaRouter, with some additional developments. > > > > The GRF-400 is out there in networks like AGIS, NetRail, PSI, DOMINO and > > Savvis. No word on any NetStar-cum-GRF1600 deployments. > > s/DOMINO/COLT. > > > > > > Am I right? > > > Look at www.ascend.com. > > Neil. > > -- > Neil J. McRae - Alive and Kicking. D O M I N O > neil(a)DOMINO.ORG NetBSD/sparc - 100% SpF (Solaris protection Factor) > Free the daemon in your <A HREF="http://www.NetBSD.ORG/">Computer!</A>

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Re: Ascend GRF400
by salo＠msc.edu 28 Apr '97

28 Apr '97

> Date: Thu, 24 Apr 1997 06:12:43 -0400 (EDT) > From: Joe Provo - Network Architect <jprovo(a)ma.ultranet.com> > To: neil(a)domino.org > Subject: Re: Ascend GRF400 > Cc: nanog(a)merit.edu > [...] > - the grf is not all of ascend. maybe they finally got things > right? > [...] It is probably useful to differentiate between Netstar, which was recently acquired by Ascend, and the rest of Ascend. The GigaRouter was developed by Netstar prior to its acquisition by Ascend. -tjs

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