A.The ingress PE changes the IPv4 route received from CE to VPNv4 route, and saves it according to different VPN instances

B.The egress PE can send IPv4 routes to the remote CE through BGP, IGP or static routing

C.The exchange between PE and CE is IPv4 routing information

D.After the egress PE receives the VPNv4 route advertised by the ingress PE, it filters the VPNv4 route according to the RT attribute carried by the route

A.128-bit value

B.100-bit value

C.64-bit value

D.32-bit value

A.Both NSR and NSF need neighbor routers to complete

B.NSF must rely on neighbor routers to complete

C.NSR must rely on neighbor routers to complete

D.NSF does not need neighbor routers to complete

A.The IP address mask of the interface is inconsistent

B.Inconsistent area codes

C.Inconsistent area types

D.The interval for sending Hello packets is inconsistent

A.The hello sending interval of OSPF is at the second level, which is faster than BFD inductive link state

B.The sending interval of BFD packets can reach the millisecond level, which is slower than the OSPF inductive link state

C.Through the BFD detected at the millisecond level, the OSPF status is associated to achieve the purpose of OSPF quickly inductive link state

D.Any change in the BFD status will not affect the OSPF neighbor status