问题:
A . EIGRP can be used only as the PE-CE routing protocol if the PE and CE routers are in the same AS
B . Other EIGRP AS routes are automatically advertised to the CE router and do not require a redistribution configuration command to be configured
C . Unlike other routing protocols that are used between PE and CE routers, EIGRP supports backdoor links
D . Configure of the VPN is only required on the PE router
● 参考解析
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