问答题
What is difference between OSPF neighbor and adjacencies？
Neighbor：A neighbor is another OSPF&ens......
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问答题 OSPFexternalroute哪些区域没有E1，E2类型的路由条目？
问答题 what’stheroleoflink-addressinIpv6，isitnecessary，why？
问答题 what’stheroleofcommunityattributeinthebgproute？
