hallo,
i want to introduce in my network a bgp RR backup router to made a backup for all vpls-bgp tunnel.
actually i have only 1 router that is a bgp rr and terminate al vpls tunnel. if this router go down all vpls tunnel can’t go anywhere. it is possible to designate a RR backup bring another bgp session from any other bgp peer and take a vpls interfaace in standby?
can you please suggest a method to accomplish this setup?
Thanks a lot
I would make a dedicated RR and backup RR
I think you would only need to peer all PE routers to both RR.
Make sure they’re all using the same ASN.
Since iBGP doesn’t modify the next hop information, you won’t really care which RR’s advertisement wins since all PEs peer with both.
I don’t think you need to peer the RRs with each other in this scenario. There’s some configuration you can do to keep the table manageably-sized if you’re linking a bunch of RRs together as well, IIRC…
So basically, each PE will have 2 neighbors: your two (standalone) RR servers. This will cause your PEs to have two BGP entries for all remote prefixes, but they’ll both point to the same address: the remote PE router, so it won’t matter.