[c-nsp] BGP Cease notifications with Graceful Restart

[Tassos Chatzithomaoglou]

...although a little bit old...

Maybe i'm thinking something wrong here, but shouldn't a single-RP router be BGP GR-capable in order to handle other than switchover cases, like a BGP process restart?
BGP control-plane can go down for many reasons, why limit the GR only to dual-RP systems?
Of course in that case NSF/SSO wouldn't be needed.

GR for LDP session reset uses the above approach if i remember correctly.

--
Tassos

Mikael Abrahamsson wrote on 22/05/2013 09:24:
> On Tue, 21 May 2013, John Neiberger wrote:
>
>> the 7600, which the CRS immediately recognized, but the CRS continued to
>> use those BGP routes until the neighbor's graceful restart timer expired.
>
> It's my experience that Cisco has a GR implemention that leaves some to be desired on a lot of platforms. I have escalated this several times to no avail.
>
> A 7600 will advertise itself as GR capable even if there is a single RP, and the BU didn't feel the need to implmement "bgp graceful-restart helper-only" even after several requests.
>
> So in our network, 7600 have no graceful restart configured. Please talk to your account team and ask them to talk to the BU and get them to fix this.
>
> Desired behaviour:
>
> On a dual RP system, advertise yourself as GR capable.
> On a single RP system, only do GR "helper".
>
> Either auto detect this or make it configurable.
>