[j-nsp] BGP Graceful Restart

[Khawaja, Kashif]

-----Original Message-----
From: Harry Reynolds [mailto:harry at juniper.net] 
Sent: Wednesday, September 22, 2004 4:19 PM
To: Khawaja, Kashif; juniper-nsp at puck.nether.net
Subject: RE: [j-nsp] BGP Graceful Restart


I believe it is expected that IGP adjacencies and BGP sessions will
bounce as the new RE takes over. 

> My fault. I just read through the Juniper document.

We do not replicate protocol state between the REs. The goal of GR is
not to preserve the control plane, I.e., to keep an adjacency up. The
goal is to permit forwarding while the control plane restarts. Put
another way, I think it a far better test to generate some traffic over
the BGP/IS-IS session/adjacencies and see what happens to traffic flow
during RE removal. 

> this was going to be the next step. Thanks.

If an adjacencies bounces, and no packets are lost, then does it really
matter?



HTHs