Heads up: Long AS-sets announced in the next few days
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Jon Morby
jon at fido.net
Wed Mar 2 11:21:40 CET 2005
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 2 Mar 2005, at 08:09, Christopher L. Morrow wrote: > > On Wed, 2 Mar 2005, Hank Nussbacher wrote: > >> >> At 02:49 AM 02-03-05 +0100, Daniel Roesen wrote: >>> On Wed, Mar 02, 2005 at 01:27:31AM +0000, James A. T. Rice wrote: >>>> What exactly are you attempting to do here? Those announcements >>>> will get >>>> dropped on the floor at least in this AS right away: >>>> >>>> route-map peers-in deny 5 >>>> match as-path 109 >>> >>> AS-Sets, not AS-Paths... >> >> An example of which I received recently: >> Feb 27 19:54:16: %BGP-6-ASPATH: Long AS path 20965 1299 3320 15589 >> 15589 >> 5397 >> {33,109,145,293,559,816,1103,1273,1275,1752,1853,1930,2042,2200,2497,2 >> 500,2914,3257,3265,3333,3352,3425,3549,4691,4697,4716,4725,5511,5539,5 >> 609,5623,6175,6435,6453,6762,6830,6939,7580,7660,8447,8472,8763,9264,1 >> 0566,12779,12793,12859,13944,14277,15897,17715,17965,24136,24895,25358 >> ,29377,29686,31103,32266} >> received from 2001:798:201B:10AA::1: More than configured MAXAS-LIMIT > > different, but related to: > Feb 1 20:47:01.608: %BGP-6-ASPATH: Long AS path 3356 6770 > 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 > 8282 > 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 > 8282 > 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 > 8282 > 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 > 8282 > 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 > 8282 > 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 8282 > 8282 > received from x.y.a.b: More than configured MAXAS-LIMIT > > hey, 8282/Fido, perhaps you don't really need a 100 as as-path? :) That was an embarrassing and painful week which I never wish to repeat, but related to a "feature" of OpenBGPD which has now been resolved. (Thanks Henning and Peter :) As a result of this I know a large number of companies have now instigated a max prefix length of 100 .... way too many Cisco's barfed on the 124+ lengths. > > -Chris > > Kindest Regards Jon Morby fax to email service - register at http://www.fido.net/fax2email/ and for all your telecom needs - http://www.fidotelecom.com/ - -- FidoNet Registration Services Ltd tel: 0845 004 3050 fido.net - the internet made simple! fax: 0845 004 3051 -----BEGIN PGP SIGNATURE----- Version: PGP 8.1 iQA/AwUBQiWTtypkummzta06EQIrpwCgzbG+GJvjpbHLVsAu/ooTNJlmbTIAn3CZ zspuZD5Ts1iZTCgyeFTCvXuo =OQp5 -----END PGP SIGNATURE-----
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