Hi,
We currently have 2 datacenters over 2 locations. The 2 locations are interconnect via dark fiber. We have setup a manual VXLAN MP-BGP fabric using ingress replication and arp-suppression.
The underlay is running OSPF over all links so we have full ospf reduncany in the underlay. For the MP-BGP control plane the spines are acting as route reflectors so each leaf always connects up to the 4 spines. (2 in each site).
Drawing:
We have a scenario where we need to migrate everything to a managed service provider network. The service provider will provision 2 L2 links from there datacenter to our datacenter 2. Suppose the service provider doesn't run VXLAN but I still but want to have full L2 in order to migrate machine over to there infrastructure whithout the need to re-ip. Would it be a solution to connect there L2 on to our leaf switches and consider them as down stream access layer. We could use a normal port-channel down stream or a back to back VPC if other party is also supporting it.
Technically this should work but all traffic would always have to travers into our datacenter and back.
Taking into account this is a temporary solution for migration and the other datacenters will go.
Can you share your opinions or approach for this scenario.
