BGP使用loopback接口建立邻居的好处？
正确答案:
（1）Providing stability and redundancy. The use of loopback interface to establish BGP session ensures that the neighbor stays up and is not affected by hardware interface problem if there is still reachable between loopback interfaces of the peers.
（2）Only one BGP connection is needed if there are redundancy paths through IGP between loopback interface of BGP peers.It also provides fast convergence based IGP routing protocol or static route when one of the path between loopback interface failure.
（2）Only one BGP connection is needed if there are redundancy paths through IGP between loopback interface of BGP peers.It also provides fast convergence based IGP routing protocol or static route when one of the path between loopback interface failure.
答案解析:有
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