February 1999 - Test - lists.nanog.org

Outages outside North America
by Sean Donelan 24 Feb '99

24 Feb '99

Since this is the North American list, I haven't been posting things about events outside of North America. Are there operation lists tracking trans-oceanic cables outages and similar things? I haven't looked, but does Canada or the UK have the equivalent of the FCC outage reports and public analysis? I'm guessing the cable didn't land in the USA because I didn't see anything hit the FCC about it. -- Sean Donelan, Data Research Associates, Inc, St. Louis, MO Affiliation given for identification not representation

3 2

Anyone in @Home NOC here?
by Michael L. Barrow 24 Feb '99

24 Feb '99

Hey -- is anyone from @Home's NOC around here? Drop me a personal email if you are. Thanks! -- Michael L. Barrow <michael(a)mlbarrow.com>

1 0

A transAtlantic cable was severed.
by Henry Linneweh 23 Feb '99

23 Feb '99

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 According to this bbc article in Sci/Tech and Janet took a dump for 24 hours as A direct result. http://news.bbc.co.uk/hi/english/sci/tech/newsid_284000/284702.stm Henry R. Linneweh -----BEGIN PGP SIGNATURE----- Version: PGP Personal Privacy 6.0.2 iQA/AwUBNtLxjeBkoZ0XTT12EQLFFwCgpnisv5TQeHftecY1c2q1mED1teUAoOYP cz9UHrT/9VvoHLDEscZ+5a/1 =mLEq -----END PGP SIGNATURE-----

7 8

Re: A transAtlantic cable was severed.
by Dean Anderson 23 Feb '99

23 Feb '99

At 04:24 PM 2/23/1999 -0500, Ravi Pina wrote: >> There's an obvious problem. How could they locate both ends, >> lift same, splice, and seal the cable in 24 hours? > >Specially trained sea monkeys? Sea horses on steroids. --Dean ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Plain Aviation, Inc dean(a)av8.com LAN/WAN/UNIX/NT/TCPIP http://www.av8.com ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

2 1

RE: transatlantic cable cut
by Chris Mauritz 23 Feb '99

23 Feb '99

Those pesky backhoe drivers will stop at NOTHING!!!! 8-) Chris Mauritz Director, Systems Administration Rare Medium, Inc. chrism(a)raremedium.com -----Original Message----- From: hhui(a)arcfour.com [mailto:hhui@arcfour.com] Sent: Tuesday, February 23, 1999 11:22 AM To: nanog(a)merit.edu Subject: transatlantic cable cut anyone have any more info on the transatlantic cable cut? it's front page news on BBC online right now.. were any non teleglobe customers affected? how much capacity was put on the cable? (it sounded overloaded to me) curiouser and curiouser, -h

3 2

transatlantic cable cut
by hhui＠arcfour.com 23 Feb '99

23 Feb '99

anyone have any more info on the transatlantic cable cut? it's front page news on BBC online right now.. were any non teleglobe customers affected? how much capacity was put on the cable? (it sounded overloaded to me) curiouser and curiouser, -h

1 0

Re: honoring AS-path prepend from a peer or customer?
by Danny McPherson 22 Feb '99

22 Feb '99

Perhaps you should reread the original message regarding issues associated with honoring undocumented/misrepresented AS Paths.. As for what you mention below, perhaps you should have a look at the document referenced in the latter portion of my original message. I can say from several years of Operational experience, what you suggest below, in the context it's in, isn't a very good idea. There are much more intelligent mechanisms to obtain desired ingress and egress traffic distribution.. Now, perhaps applying policies or the like based on AS_PATH would be reasonable to some extent, but suppressing or manipulating specific path entries is only asking for trouble. Bedsides that, I'm not aware of any router vendor shipping code that would do anything along these lines, with the exception of the "private-AS" stuff that some support.. -danny Terence wrote: >It's very useful if you want to keep a link rather free of traffic in case >of a backup service from another NSP, and then when your big pipe goes >down, you have this other service with routes intact ready to roll without >intervention.

1 0

Power Problem at MAE-West
by mwinter＠exodus.net 20 Feb '99

20 Feb '99

Mae-West (MFS location) has currently a power problem (since 9am PST) - in case you have some peers down, this is likely the problem. MFS Master ticket: 383730 - Martin Winter Exodus Communications (yeah.. our router is one of the affected ones :-( )

1 0

The Cidr Report
by Tony Bates 19 Feb '99

19 Feb '99

This is an auto-generated mail on Fri Feb 19 12:00:00 PST 1999 It is not checked before it leaves my workstation. However, hopefully you will find this report interesting and will take the time to look through this to see if you can improve the amount of aggregation you perform. The report is split into sections: 0) General Status List the route table history for the last week, list any possibly bogus routes seen and give some status on ASes. 1) Gains by aggregating at the origin AS level This lists the "Top 30" players who if they decided to aggregate their announced classful prefixes at the origin AS level could make a significant difference in the reduction of the current size of the Internet routing table. This calculation does not take into account the inclusion of holes when forming an aggregate so it is possible even larger reduction should be possible. 2) Weekly Delta A summary of the last weeks changes in terms of withdrawn and added routes. Please note that this is only a snapshot but does give some indication of ASes participating in CIDR. Clearly, it is generally a good thing to see a large amont of withdrawls. 3) Interesting aggregates Interesting here means not an aggregate made as a set of classful routes. Thanks to xara.net for giving me access to their routing tables once a day. Please send any comments about this report directly to me. Check http://www.employees.org/~tbates/cidr-report.html for a daily update of this report. ------------------------------------------------------------------------------ CIDR REPORT for 19Feb99 0) General Status Table History ------------- Date Prefixes 120299 55713 130299 55907 140299 55818 150299 55997 160299 56035 170299 56178 180299 56403 190299 56528 Check http://www.employees.org/~tbates/cidr.plot.html for a plot of the table history. Possible Bogus Routes --------------------- AS Summary ---------- Number of ASes in routing system: 4569 Number of ASes announcing only one prefix: 2279 (1216 cidr, 1063 classful) Largest number of cidr routes: 353 announced by AS701 Largest number of classful routes: 850 announced by AS701 1) Gains by aggregating at the origin AS level --- 19Feb99 --- ASnum NetsNow NetsCIDR NetGain % Gain Description AS271 353 138 215 60.9% BCnet Backbone AS2493 273 155 118 43.2% iSTAR Internet, Inc. AS174 652 536 116 17.8% Performance Systems International AS11305 116 8 108 93.1% UNKNOWN AS3749 149 65 84 56.4% TECNET AS1267 107 29 78 72.9% IUNET-AS AS4293 222 148 74 33.3% IMCI AS4755 151 80 71 47.0% Videsh Sanchar Nigam Ltd. India AS7046 280 215 65 23.2% UUNET-CUSTOMER AS4200 161 98 63 39.1% AGIS (Apex Global Information Ser AS4740 386 325 61 15.8% Ozemail Pty Ltd (ASN-OZEMAIL) AS1239 521 464 57 10.9% SprintLink Backbone AS1221 407 351 56 13.8% AARNET-AS AS7545 110 55 55 50.0% TPG Internet Pty Ltd AS7657 142 90 52 36.6% The Internet Group Limited AS72 89 37 52 58.4% Schlumberger Information Network AS10928 104 53 51 49.0% UNKNOWN AS577 222 172 50 22.5% Bell Canada Backbone AS7496 76 27 49 64.5% Power Up AS719 456 410 46 10.1% LANLINK autonomous system AS852 173 135 38 22.0% AGT Advance Communication AS5674 64 27 37 57.8% PBI-NET-BLK AS803 72 36 36 50.0% SaskNet Backbone AS701 850 814 36 4.2% Alternet AS6897 63 27 36 57.1% Global-One Spain AS7122 112 77 35 31.2% MTS ADVANCED Network Policy AS1785 249 217 32 12.9% NYSERNet Backbone AS6332 97 66 31 32.0% TELNOR AS4307 32 1 31 96.9% SVINET-1 AS2707 63 32 31 49.2% WEC For the rest of the previous weeks gain information please see http://www.employees.org:80/~tbates/cidr-report.html 2) Weekly Delta Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report 3) Interesting aggregates Please see http://www.employees.org:80/~tbates/cidr-report.html for this part of the report

1 0

Re: honoring AS-path prepend from a peer or customer?
by Avi Freedman 19 Feb '99

19 Feb '99

In article <99118.183518.5014(a)avi.netaxs.com> you wrote: : If a peer (or transit customer) prepends their own AS to : their route announcements to you, do you ever strip off : the excessive As'es? That is, do you always honor them : in your announcements to your other customers (or peers)? : I do understand that any operator has full control over : deciding his own outbound policy, regardless of the : AS path. : I want to know what the industry practice is and whether : I should stipulate in my next upstream agreement that : they honor my prepends? : Thanks. Standard practice is to accept them, though you may need to tell the peer or upstream what regexps to allow if they filter by as-path as well as by prefix. (Always a good idea...) My side question is - what shipping routers will let you rewrite AS-Paths by doing anything other than just prepending? Just wondering if any 7007-type horrors are lurking in the wings. I believe Criscos, Bays, and gated boxes can't do this (without BGP->IGP->BGP redistribution). Avi

3 4