NSF for OSPF

[pkhatri]

Hi,

Does anyone know if Cisco has plans to support RFC3623 (Graceful OSPF Restart) ?

Cheers,

Paresh.

[Georg Pauwen]

Hello Paresh,

I read the RFC, but I cannot really figure out if the RFC refers to OSPF Nonstop Forwarding (NSF) Awareness, a feature that is supported by Cisco since IOS 12.15(T).

Check the link below for an explanation of how NSF is implemented, is that what you are looking for ?

OSPF Nonstop Forwarding (NSF) Awareness

http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cg/hirp_c/ch15/hosnsfa.htm

Regards,

GP

[ruwhite]

There are actually two different sets of RFCs in this area, the graceful restart RFC, and then this set:

draft-ietf-ospf-oob-resync

draft-ietf-ospf-lls

draft-ietf-ospf-restart

(which are all expired at the moment, but we should be issuing new versions at some point, I would think)

They are completely different systems, with completely different technical characteristics. Cisco already supports the three drafts mentioned above, and is working on support for the Moy standard.

:-)

Russ.W

[pkhatri]

Thanks Russ,

I guess what led me to ask is that I did not see Cisco listed in the latest implementation report for OSPF GR.

Thanks for clarifying this, anyway.

Paresh.