Question

A network engineer configured EIGRP named mode for VRF CUSTOMER_A on two PE routers connected back-to-back over a physical link. The EIGRP adjacency in the VRF forms successfully, and both routers show each other as neighbors under 'show eigrp address-family ipv4 vrf CUSTOMER_A neighbors'. However, routes learned from the remote PE do not appear in 'show ip route vrf CUSTOMER_A'. The interfaces belong to the correct VRF, and the autonomous-system number matches. What is the MOST likely cause?

Accepted Answer

A distribute-list or route-map inbound under the VRF address-family is filtering the received routes

Answer

The 'autonomous-system' number under the address-family does not match, preventing route exchange

Answer

The VRF route distinguisher (RD) differs between the two PE routers, so EIGRP drops the routes

Answer

BFD is enabled on the interface, which suppresses EIGRP route installation until echo packets are validated