4-16
0 : OSPF Router ID confusion 0 : OSPF bad packet
0 : OSPF bad version 0 : OSPF bad checksum
0 : OSPF bad area ID 0 : OSPF drop on unnumber interface
0 : OSPF bad virtual link 0 : OSPF bad authentication type
0 : OSPF bad authentication key 0 : OSPF packet too small
0 : OSPF Neighbor state low 0 : OSPF transmit error
0 : OSPF interface down 0 : OSPF unknown neighbor
0 : HELLO: Netmask mismatch 0 : HELLO: Hello timer mismatch
0 : HELLO: Dead timer mismatch 0 : HELLO: Extern option mismatch
0 : HELLO: Neighbor unknown 0 : DD: MTU option mismatch
0 : DD: Unknown LSA type 0 : DD: Extern option mismatch
0 : LS ACK: Bad ack 0 : LS ACK: Unknown LSA type
0 : LS REQ: Empty request 0 : LS REQ: Bad request
0 : LS UPD: LSA checksum bad 0 : LS UPD: Received less recent LSA
0 : LS UPD: Unknown LSA type
Table 4-5 display ospf error
command output description
Field
Description
OSPF Router ID confusion
Packets with duplicate route ID
OSPF bad packet
Packets illegal
OSPF bad version
Packets with wrong version
OSPF bad checksum
Packets with wrong checksum
OSPF bad area ID
Packets with invalid area ID
OSPF drop on unnumber interface
Packets dropped on the unnumbered interface
OSPF bad virtual link
Packets on wrong virtual links
OSPF bad authentication type
Packets with invalid authentication type
OSPF bad authentication key
Packets with invalid authentication key
OSPF packet too small
Packets too small in length
OSPF Neighbor state low
Packets received in low neighbor state
OSPF transmit error
Packets with error when being transmitted
OSPF interface down
Shutdown times of the interface
OSPF unknown neighbor
Packets received from unknown neighbors
HELLO: Netmask mismatch
Hello packets with mismatched mask
HELLO: Hello timer mismatch
Hello packets with mismatched hello timer
HELLO: Dead timer mismatch
Hello packets with mismatched dead timer
HELLO: Extern option mismatch
Hello packets with mismatched option field
