When EIGRP is used as the IPv4 PE-CE protocol, which two requirements must be configured before
the BGP IPv4 address family can be configured? (Choose two.)
A.
the route distinguisher
B.
the virtual routing and forwarding instance
C.
the loopback interface
D.
the router ID
A VRF must be created, and a route distinguisher and route target must be configured in order for
the PE routers in the BGP network to carry EIGRP routes to the EIGRP CE site. The VRF must
also be associated with an interface in order for the PE router to send routing updates to the CE
router.
Prerequisites
Before this feature can be configured, MPLS and CEF must be configured in the BGP network,
and multiprotocol BGP and EIGRP must be configured on all PE routers that provide VPN services
to CE routers.
Reference.
http://www.cisco.com/c/en/us/td/docs/ios/12_0s/feature/guide/seipecec.html#wp1083316