nanog mailing list archives
RE: ASPATH Loop
From: "Ivan Pepelnjak" <ip () ioshints info>
Date: Sun, 10 May 2009 14:33:39 +0200
Multiple discontiguous copies of an AS number in the AS-path can also be caused by the "original" Cisco IOS "local-as" feature, but in that case the AS number in the middle would be fixed. http://bit.ly/7TnCi And there's always the AS-path prepending. Cisco IOS allows you to insert anything in the AS path. Ivan http://www.ioshints.info/about http://blog.ioshints.info/
-----Original Message----- From: yangyang. wang [mailto:wyystar () gmail com] Sent: Sunday, May 10, 2009 12:52 PM To: nanog () nanog org Subject: ASPATH Loop Hi, NANOG: When I was analyzing the BGP RIB data from RouteViews, I found that there were aspath loop in many bgp rib entries. For example, in the file rib.wide.20090301.0319, the peer 202.249.2.169 in AS2497 observed the following aspaths: 3130 29283 3130 2914 2497 3130 7337 3130 2914 2497
Current thread:
- ASPATH Loop yangyang. wang (May 10)
- Re: ASPATH Loop Nathan Ward (May 10)
- Re: ASPATH Loop yangyang. wang (May 10)
- RE: ASPATH Loop Ivan Pepelnjak (May 10)
- Re: ASPATH Loop Nathan Ward (May 10)