Friday, April 30, 2021

Inter-AS MPLS - BGP-LU and injecting in Segment Routing domain

We build state-of-the-art Metro ethernet network with inter AS connectivity and wish to achieve inter domain passthrough for L2VPN and L3VPN services. Dataplane is represented by MPLS Segment Routing. Control plane uses EVPN of course.

Do you have any examples for it in real world? In our case problem arises, when labels from BGP LU (Inter-AS Option C scheme) for nexthop need to be populated into the segment routing domain in another AS.

We have met mentions of BGP-SR or SR-TE ways, but without real applications.

So, what is simplest way to deploying inter-as MPLS SR/EVPN L2 or L3 services?



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