RE: ASPATH Loop

2009-05-10 Thread Ivan Pepelnjak
you to insert anything in the AS path. Ivan http://www.ioshints.info/about http://blog.ioshints.info/ > -Original Message- > From: yangyang. wang [mailto:wyys...@gmail.com] > Sent: Sunday, May 10, 2009 12:52 PM > To: nanog@nanog.org > Subject: ASPATH Loop > > Hi， NANOG

Re: ASPATH Loop

2009-05-10 Thread yangyang. wang
OK，I see, Thanks！ 2009/5/10 Nathan Ward : > On 10/05/2009, at 10:51 PM, yangyang. wang wrote: > >> As we know, BGP instance running on routers don't allow loop in >> ASPATH, why they can be seen in RIBs? It's some particular technical >> configuration in practice? OR What's wrong with AS3130?? >

Re: ASPATH Loop

2009-05-10 Thread Nathan Ward
On 10/05/2009, at 10:51 PM, yangyang. wang wrote: As we know, BGP instance running on routers don't allow loop in ASPATH, why they can be seen in RIBs? It's some particular technical configuration in practice? OR What's wrong with AS3130?? Look at the WHOIS entry for AS3130, and notice in the

ASPATH Loop

2009-05-10 Thread yangyang. wang
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