BGP Neighbor Failover IOS XR

[eduard.osorio]

Hi.

I'd like to ask you people for your help.

I want to decrease times for a failover in a BGP neighbor, so that if one conection fails, a vrf gets updated with the route through another next hop (neighbor) as fast as it can be updated. I think this could be implemented with IP SLA, static routing or/and a second dynamic routing protocol, but in IOS XR I have not been able to find something. My router is an ASR 9k.

Greetings.

[Florian Frotzler]

In IOS-XR this is called PIC (Prefix Independent Convergence). See the BGP documentation for more details.

Regards,

Florian

[eduard.osorio]

Thanks a lot for your help. I was looking for this PIC in BGP, but as I can conclude it depends of the iBGP protocol to work. In my case I use the same BGP as internal dynamic protocol, making the back up link 'entry' depending of my BGP timers. Am I wrong?

[Leonardo Gama]

Hi, I think you should look at two features: BFD and BGP Add Path.

Good luck.

[eduard.osorio]

Hi, thanks a lot for your help. I was trying to do something about this with BFD, but the further I have accomplished is seeing the BFD (initializing). I configured BFD per neighbor, per VRF in my BGP session, but I can't see anything in a "show bfd session". BFD only works in physical interfaces? I really apprecciate your help. Thank you very much.

[Leonardo Gama]

Have you configured the physical interfaces to support the BFD?

Regards.