look for BGP routes containing local AS#

Song Li refresh.lsong at gmail.com
Tue Jan 27 13:45:38 UTC 2015

Hi everyone,

Recently I studied the BGP AS path looping problem, and found that in 
most cases, the received BGP routes containing local AS# are suspicious. 
However, we checked our BGP routing table (AS23910,CERNET2) on juniper 
router(show route hidden terse aspath-regex .*23910.* ), and have not 
found such routes in Adj-RIB-In.

We believe that the received BGP routes containing local AS# are related 
to BGP security problem. Hence, we want to look for some real cases in 
the wild. Could anybody give us some examples of such routes?


Best Regards!

Song Li
Room 4-204, FIT Building,
Network Security,
Department of Electronic Engineering,
Tsinghua University, Beijing 100084, China
Tel:( +86) 010-62446440
E-mail: refresh.lsong at gmail.com

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