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MPLS OSPF IGP and BGP with VSS CE

Hi,
 
When converging from VSS Active switch to Standby switch, it took around 30+ seconds to access the internal routes 10.X.X.X/24 via BGP. We are using OSPF for IGP MPLS backbone and BGP.
 
My setup:
 
PPEx Route-Reflector1
||
MPLS PPE1 <----> CE1 VSS Active     ---
                                                              |    |
                                                              |    }10.X.X.X/24
                                                              |    |
MPLS PPE2 <----> CE2 VSS Standby ---
||
PPEy Route-Reflector2
 
Attached is the CE config and also the loggs during failover.
Failover is tested by applying the "redundancy force-switchover" on the active VSS.
 
LDP to BGP neighbors come up which I think is causing the long failover. OSPF works fine as I can see that the loopback stays up with minimum packet loss.
Any alternatives to shortening this failover wait time?
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2 REPLIES 2

Hello, I see that you have

Hello,

 

I see that you have nsf enabled ospf, but have you configured NSF/SSO (graceful-restart) for LDP and BGP?

I hope this links helps:
http://www.cisco.com/c/en/us/td/docs/ios/mpls/configuration/guide/12_2sy/mp_12_2sy_book/mp_ldp_grace_nsfsso.html

Regards,
Mohammad

Participant

Hi Mohammad,I will read up on

Hi Mohammad,

I will read up on the link you posted and let you know.

Thanks for the info.

 

Regards

Peter

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