Is 'local as' the same as the origin-as ? That is, the first item in the AS-PATH list ?
regards Carlos On 1/27/15 12:16 PM, Song Li wrote: > For example, My AS# is 23910 and the 'local AS' is 23910. If our BGP > router received a route from the BGP neighbor AS1 with the AS-PATH: 1 .* > 23910, then the route is what we are looking for. > > 在 2015/1/27 22:05, Carlos M. Martinez 写道: >> Can you clarify what do you mean by 'local AS' ? >> >> regards >> >> Carlos >> >> On 1/27/15 11:48 AM, Song Li wrote: >>> 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? >>> >>> Thanks! >>> >>> Best Regards! >>> > >
