[j-nsp] BGP Graceful Restart

[Wayne E. Bouchard]

If an update is missed and the routing table gets out of sync during
the switchover process or an access list manages to get bypassed, then
yes, it matters. The question is how MUCH does it matter?

I'd still rather have that than nothing at all. For me, I can more
easily deal with a moment or two of oddities than 5 to 10 minutes as
things resynchronize.

-Wayne

On Wed, Sep 22, 2004 at 02:19:25PM -0700, Harry Reynolds wrote:
> I believe it is expected that IGP adjacencies and BGP sessions will bounce
> as the new RE takes over. 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. If an adjacencies bounces, and no packets
> are lost, then does it really matter?
> 
> 
> 
> HTHs
> 
> 
> 
> > -----Original Message-----
> > From: juniper-nsp-bounces at puck.nether.net 
> > [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of 
> > Khawaja, Kashif
> > Sent: Wednesday, September 22, 2004 2:11 PM
> > To: juniper-nsp at puck.nether.net
> > Subject: [j-nsp] BGP Graceful Restart
> > 
> > Hi All:
> > 
> > Trying to test Graceful Restarts for different protocols and 
> > seem to be having a little trouble getting it to work.
> > I have an M40 and M160 connected to each other and running 
> > isis and bgp.
> > If I were to pull the active RE on the 160 the isis and bgp 
> > adjacency bounce. I have the following configuration in on 
> > both the routers:
> > routing-options {   
> >     graceful-restart;
> >     static {
> >         route 172.16.0.0/16 next-hop 172.19.253.1;
> >     }
> > }
> > 
> > And also the RE switchover config in for the 160.
> > 
> > chassis {
> >     redundancy {
> >         failover on-loss-of-keepalives;
> >         graceful-switchover {
> >             enable;
> >         }
> >     }
> > }
> > 
> > Am I missing something?
> > 
> > Thanks.
> > Kashif.
> > _______________________________________________
> > juniper-nsp mailing list juniper-nsp at puck.nether.net 
> > http://puck.nether.net/mailman/listinfo/juniper-nsp
> > 
> 
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---
Wayne Bouchard
web at typo.org
Network Dude
http://www.typo.org/~web/