[nsp] BGP Q

Bradley Dunn bradley at dunn.org
Mon Feb 9 22:39:59 EST 2004


Matthew Crocker wrote:
> 
> On Feb 9, 2004, at 5:24 PM, jlewis at lewis.org wrote:
> 
>> Yes.  You can prepend (I use the provider's ASN) received routes just as
>> you would prepend outgoing routes (route-map).
>>
>>
> 
> You should always prepend with YOUR ASN.  If you prepend your providers 
> AS and later accidentally leak the route it is harder to track where the 
> path is being munged.

If you prepend with your ASN and pass those routes via iBGP they will be 
discarded. (Unless you disable loop detection, which is not advisable.)

Bradley


More information about the cisco-nsp mailing list