[c-nsp] DMVPN and OSPF

[Rodney Dunn]

OSPF and DMVPN can be a bit funky.

Did you force the DR to be the hub by setting the priority?

I forgot, did you set it to broadcast or multipoint?

I'd suggest you look at the packet capture feature and get a trace when 
it's down.

Do you see the LSA's in the database?
Can you ping 224.0.0.5 and get a response?

Are the neighbors flapping?



Jay Nakamura wrote:
> Has anyone seen this symptom?
> 
> 1841, advanced IP feature set
> DMVPN spoke and OSPF over the DMVPN
> 
> Running 12.4(24)T
> 
> Periodically, the router looses all it's OSPF routes and stays that
> way.  Clearing the DMVPN or OSPF process does nothing.  It recreates
> the OSPF session with neighbor but it still has no routes.  It can't
> seem to re-connect to the backup DMVPN hub either.
> 
> Router still routes to the static default route for internet traffic
> and everything else seems normal.  Just can't get to the VPN network.
> 
> It's really not doing anything fancy other than DMVPN and OSPF.
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