[c-nsp] In Service Software Upgrade

[Manu Chao]

ISSU not possible on 7600 platform (possible on CRS-1, ASR 9000, Nexus 7000)

On Thu, Oct 8, 2009 at 12:32 PM, Aleksandr Gurbo <kron at linkey.ru> wrote:

> Hello,
>
> I want upgrade IOS on the cisco 7600 with two Sup32 without rebooting. I
> use for this ISSU procedure.
> I try migrate from SRC to SRD branch. IOS is upgraded, but downtime
> duration is about 280 seconds. All sessions(ospf, mpls, bgp) with neighbors
> was lost. NSF and GR(for mpls,ospf,bgp) are turned on.
> In ISSU process I saw that c7600 has switched from SSO to RPR mode. All
> interface cards have been reloaded. I thought that the problem in IOS,
> because I use different branches of IOS(SRC->SRD3). For the test, I tried to
> switch from SRD2 to SRD3 - the result is the same.
> I think the problem is in the switching mode(from SSO to RPR).
>
> How to upgrade IOS without downtime?
>
> --
> Aleksandr Gurbo
>
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/
>