Site A runs Centrally Routed Bridging (CRB) while Site B runs Edge Routed Bridging (ERB). The municipal DCI team will stitch the two overlays. What must the design reconcile carefully?
Select an answer to reveal the explanation.
Short Explanation
CRB keeps the big routers in the middle of the campus; ERB pushes routing out to the leaf edge. Stitching those two is fine—but you have to respect where each side expects the gateway to live. Mismatch the gateway story and the stitch becomes a troubleshooting marathon.
Full Explanation
CRB places inter-subnet routing more centrally; ERB places it at the leaf/edge. DCI stitching between mixed architectures is possible but must account for asymmetric gateway placement, IRB behavior, and which device owns routing for the tenant. Claiming CRB/ERB can never interconnect, forcing a full architecture conversion first, or assuming the stitch magically moves anycast gateways to the WAN edge are incorrect.