【正文】 bor unknown0 : NBMA neighbor unknownDD packet errors:0 : Neighbor state low 0 : Router id confusion0 : Extern option mismatch 0 : Unknown LSA type0 : MTU option mismatchLS ACK packet errors:0 : Neighbor state low 0 : Bad ackThe safer , easier way to help you pass any IT exams.20 / 820 : Duplicate ack 0 : Unknown LSA typeLS REQ packet errors:0 : Neighbor state low 0 : Empty request0 : Bad requestLS UPD packet errors:0 : Neighbor state low 0 : Newer selfgenerate LSA0 : LSA checksum bad 0 : Received less recent LSA0 : Unknown LSA typeOpaque errors:0 : 9out of flooding scope 0 : 10out of flooding scope0 : 11out of flooding scopeRetransmission for packet over Limitation errors:0 : Number for DD Packet 0 : Number for Update Packet0 : Number for Request PacketReceive Grace LSA errors:0 : Number of invalid LSAs 0 : Number of policy failed LSAs0 : Number of wrong period LSAsConfiguration errors:0 : Tunnel cost mistake0 : The network type of the neighboring interface is not consistent. ID 沖突 不匹配 不一致 鄰居無法建立，display ospf error 給出如下信息，有可能的原因是[RTB]display ospf errorOSPF Process 1 with Router ID OSPF error statistics:General packet errors:0 : IP: received my own packet 0 : Bad packet0 : Bad version 0 : Bad checksum0 : Bad area id 0 : Drop on unnumbered interface0 : Bad virtual link 8 : Bad authentication type0 : Bad authentication key 0 : Packet too small0 : Packet size ip length 0 : Transmit error0 : Interface down 0 : Unknown neighborHELLO packet errors:0 : Netmask mismatch 0 : Hello timer mismatch0 : Dead timer mismatch 0 : Extern option mismatch0 : Router id confusion 0 : Virtual neighbor unknown0 : NBMA neighbor unknownDD packet errors:0 : Neighbor state low 0 : Router id confusion0 : Extern option mismatch 0 : Unknown LSA type0 : MTU option mismatchLS ACK packet errors:0 : Neighbor state low 0 : Bad ack0 : Duplicate ack 0 : Unknown LSA typeLS REQ packet errors:0 : Neighbor state low 0 : Empty request0 : Bad requestLS UPD packet errors:0 : Neighbor state low 0 : Newer selfgenerate LSA0 : LSA checksum bad 0 : Received less recent LSA0 : Unknown LSA typeOpaque errors:0 : 9out of flooding scope 0 : 10out of flooding scope0 : 11out of flooding scopeRetransmission for packet over Limitation errors:0 : Number for DD Packet 0 : Number for Update Packet0 : Number for Request PacketReceive Grace LSA errors:0 : Number of invalid LSAs 0 : Number of policy failed LSAs0 : Number of wrong period LSAsConfiguration errors:0 : Tunnel cost mistake0 : The network type of the neighboring interface is not consistent. ID 沖突 時間間隔和Dead 時間間隔不一致 鄰居無法建立，display ospf error 給出如下信息，有可能的原因是[RTB]display ospf errorOSPF Process 1 with Router ID OSPF error statistics:General packet errors:0 : IP: received my own packet 0 : Bad packet0 : Bad version 0 : Bad checksum0 : Bad area id 0 : Drop on unnumbered interface0 : Bad virtual link 0 : Bad authentication type3 : Bad authentication key 0 : Packet too small0 : Packet size ip length 0 : Transmit error0 : Interface down 0 : Unknown neighborHELLO packet errors:0 : Netmask mismatch 0 : Hello timer mismatch0 : Dead timer mismatch 0 : Extern option mismatch0 : Router id confusion 0 : Virtual neighbor unknown0 : NBMA neighbor unknownDD packet errors:0 : Neighbor state low 0 : Router id confusion0 : Extern option mismatch 0 : Unknown LSA type0 : MTU option mismatchLS ACK packet errors:0 : Neighbor state low 0 : Bad ack0 : Duplicate ack 0 : Unknown LSA typeLS REQ packet errors:0 : Neighbor state low 0 : Empty request0 : Bad requestLS UPD packet errors:0 : Neighbor state low 0 : Newer selfgenerate LSA0 : LSA checksum bad 0 : Received less recent LSA0 : Unknown LSA typeOpaque errors:0 : 9out of flooding scope 0 : 10out of flooding scope0 : 11out of flooding scopeRetransmission for packet over Limitation errors:0 : Number for DD Packet 0 : Number for Update Packet0 : Number for Request PacketReceive Grace LSA errors:0 : Number of invalid LSAs 0 : Number of policy failed LSAs0 : Number of wrong period LSAsConfiguration errors:0 : Tunnel cost mistake0 : The network type of the neighboring interface is not consistent. ID 沖突 不匹配 鄰居無法建立，display ospf error 給出如下信息，有可能的原因是[RTB]display ospf errorOSPF Process 1 with Router ID OSPF error statistics:General packet errors:0 : IP: received my own packet 0 : Bad packet0 : Bad version 0 : Bad checksum7 : Bad area id 0 : Drop on unnumbered interface0 : Bad virtual link 0 : Bad authentication type0 : Bad authentication key 0 : Packet too small0 : Packet size ip length 0 : Transmit error0 : Interface down 0 : Unknown neighborHELLO packet errors:0 : Netmask mismatch 0 : Hello timer mismatch0 : Dead timer mismatch 0 : Extern option mismatch9 : Router id confusion 0 : Virtual neighbor unknown0 : NBMA neighbor unknownDD packet errors:0 : Neighbor state low 0 : Router id confusion0 : Extern option mismatch 0 : Unknown LSA type0 : MTU option mismatchLS ACK packet errors:0 : Neighbor state low 0 : Bad ack0 : Duplicate ack 0 : Unknown LSA typeLS REQ packet errors:0 : Neighbor state low 0 : Empty request0 : Bad requestLS UPD packet errors:0 : Neighbor state low 0 : Newer selfgenerate LSA0 : LSA checksum bad 0 : Received less recent LSA0 : Unknown LSA typeOpaque errors:0 : 9out of flooding scope 0 : 10out of flooding scope0 : 11out of flooding scopeRetransmission for packet over Limitation errors:0 : Number for DD Packet 0 : Number for Update Packet0 : Number for Request PacketReceive Grace LSA errors:0 : Number of invalid LSAs 0 : Number of policy failed LSAs0 : Number of wrong period LSAsConfiguration errors:0 : Tunnel cost mistake0 : The network type of the neighboring interface is not consistent. 時間間