A. If using OSPF or EIGRP as the PE-CE routing protocol, redistribution is not required, but any other protocol or static route will require redistribution
B. If using IS-IS as the PE-CE routing protocol, no redistribution is required
C. If using static routes between the CE and PE routers, no redistribution of other VPN routes is required
D. If PE-CE protocol is not BGP, redistribution of other VPN routes from MP-BGP is required

A. On the CE router, PE neighbors must be configured in the VRF context on the CE router
B. On PE routers, the CE IBGP neighbors are configured in the global BGP configuration
C. On PE routers, the CE EBGP neighbors are configured in the VRF context
D. A separate BGP process must be used on the PE routers for CE routers so that they do not use the same BGP routing process as that used for the PE router's other provider neighbors