[c-nsp] two bgp sesion on one router

Robert Raszuk robert at raszuk.net
Tue Aug 23 07:58:33 EDT 2011


Hi zaidoon,

Nope - I would not recommend that.

Your better choice is to peer between loopbacks and use
disable-connected-check knob or BGP multihop.

Two sessions will cause you to get the same paths two times wasting a
bit of control plane memory and CPU inbound processing - but that's
about it. On the peer's side update generation would be the same as your
peer would only copy at replication. But better is to have single
session IMHO.

Cheers,
R.

> Is it  recommended to terminate
>  two bgp session on 12000 xr that  peering with the same isp on the same router how
> to handle full routing table ? Any clues 
> 
> Zaid 
> 
> 
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