A.Execute the bgp 65002 command on RTA to start the BGP process, and execute displabgp peer on RTE, you should see the EBGP neighbor RTA belonging to AS65002

B.Compared with the reflector, a disadvantage of confederation is that all routers must support confederation, so RTB and RTD must be configured with confederation id and confederation peer-as and other related commands.

C.Execute displabgp peer on RTA, you can see that RTB and RTB are IBGP neighbors, and RTE is EBGP neighbors.

D.Assuming that RTE advertises route 10.1.1.0, the AS-PATH attribute of this route will be seen on RTD as 100, because the route passes through AS100.

A.Destination Address/Mask ( Destination/Mask )

B.Cost ( Cost )

C.Outgoing interface ( Interface )

D.Nexthop ( Nexthop )

A.Router-ospf-1]ospf preference 60

B.Router-ospf-1]preference 60

C.Router]ospf preference 60

D.Router]preference 60

A.link layer header

B.CLV

C.IS-IS general header

D.IS-IS dedicated header

A.2400.0001.0020

B.2400.0001.0020.0300

C.0001.0020.0300

D.06.2400

E.01