ospf convergence time

Unanswered Question
Mar 15th, 2009

I have question about improving ospf convergence time within a test mpls core network. The network consist of 10-Gig ethernet and Optical connections.

There are a few configuration options that can be combined together to achieve sub-second ospf convergence.

I am looking at these options:

1. BFD

2. OSPF Fast-hellos

3. timers throttle spf/lsa

4. FRR

5. RSVP Hellos

I am mainly focussing on first three configuration options to achieve quick failure detection and convergence (1 s or less).

I am trying avoid FRR for supportability issues and ease of admin overhead.

I have read through several docs on BFD, Fast-hello and timers throttle spf/lsa configuration. I do believe it is possible to achieve convergence to this level, if not exactly in msec.

Can I achieve fast ospf convergence with a combination of fast-hellos, bfd, and timer throttle ??

Any ideas/suggestions would be appreciated!!!

I have this problem too.
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Richard Burts Sun, 03/15/2009 - 13:32

Fawad has posted this same question in the LAN Switching and Routing forum where it has received several responses. I suggest that any further discussion be consolidated in the LAN forum.




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