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OSPF邻居无法建立,display ospf error给出如下信息,有可能的原因是 [RTB] display ospf error OSPF Process 1 with Router ID 2.2.2.2 OSPF error statistics: General packet errors: 0 : IP: received my own packet 0 : Bad packet 0 : Bad version 0 : Bad checksum 0 : Bad area id 0 : Drop on unnumbered interface 0 : Bad virtual link 0 : Bad authentication type 3 : Bad authentication key 0 : Packet too small 0 : Packet size>ip length 0 : Transmit error 0 : Interface down 0 : Unknown neighbor Hello packet errors: 0 : Netmask mismatch 0 : Hello timer mismatch 0 : Dead timer mismatch 0 : Extern option mismatch 0 : Router id confusion 0 : Virtual neighbor unknown 0 : NBMA neighbor unknown DD packet errors: 0 : Neighbor state low 0 :Router id confusion 0 :Extern option mismatch 0 :Unknown LSA type 0 : MTU option mismatch LS ACK packet errors: 0 : Neighbor state low 0 : Bad ack 0 : Duplicate ack 0 : Unknown LSA type LS REQ packet errors: 0 : Neighbor state low 0 : Empty request 0 : Bad request LS UPD packet errors: 0 :Neighbor state low 0 :Newer self-generate LSA 0 : LSA checksum bad 0 : Received less recent LSA 0 : Unknown LSA type Opaque errors: 0 : 9-out of flooding scope 0 : 10-out of flooding scope 0 : 11-out of flooding scope Retransmission for packet over Limitation errors: 0 : Number for DD Packet 0 :Number for Update Packet 0 :Number for Request Packet Receive Grace LSA errors: 0 : Number of invalid LSAs 0 : Number of policy failed LSAs 0 : Number of wrong period LSAs Configuration errors: 0 : Tunnel cost mistake 0 : The network type of the neighboring interface is not consistent.