[rbak-nsp] Redback -> Multiple BGP Peers

Antonie falco cammerra at gmail.com
Fri Apr 15 03:06:44 EDT 2011


Hello,

On my network, I have two BGP neighbours.
One should only be used as a backup peer, as it is paid for by the megabyte.

I would like to advertise a higher subnet to peer #2, and a smaller subnet
to Peer #1 to ensure the more defined route would take preference over peer
#2.

Example:
1.1.1.1/20 to peer #2
1.1.1.1/24 to peer #1 (so this would typically be preferred globally)

In Cisco I can simply change the prefix list to peer 1 to include the /24's,
while with peer #2 have only /20 permitted. And this works well. However
this behaviour was not repeated on the redback. It continued to advertise
the /20 to both neighbours.

Does anyone know how to achieve this?

Regards,
Antonie Falco
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