3Com 5500-EI PWR Reference Manual page 329

Description
Use the display ospf error command to display OSPF error information.
Examples
# Display the OSPF error information.
<Sysname> display ospf error
OSPF packet error statistics:
0: IP: received my own packet
0: OSPF: wrong version
0: OSPF: wrong area id
0: OSPF: wrong virtual link
0: OSPF: wrong authentication key
0: OSPF: packet size > ip length
0: OSPF: interface down
0: HELLO: netmask mismatch
0: HELLO: dead timer mismatch
0: HELLO: router id confusion
0: HELLO: NBMA neighbor unknown
0: DD: router id confusion
0: DD: unknown LSA type
0: LS ACK: wrong ack
0: LS ACK: unknown LSA type
0: LS REQ: neighbor state low
0: LS REQ: wrong request
0: LS UPD: neighbor state low
0: LS UPD: LSA checksum wrong
0: LS UPD: unknown LSA type
0: DD: MTU option mismatch
0: LS UPD: LSA length wrong
Table 4-5 Description on the fields of the display ospf error command
IP: received my own packet
OSPF: wrong packet type
OSPF: wrong version
OSPF: wrong checksum
OSPF: wrong area id
OSPF: area mismatch
OSPF: wrong virtual link
OSPF: wrong authentication type
OSPF: wrong authentication key
OSPF: too small packet
OSPF Process 1 with Router ID 1.1.1.1
Field
0: OSPF: wrong packet type
0: OSPF: wrong checksum
0: OSPF: area mismatch
0: OSPF: wrong authentication type
0: OSPF: too small packet
0: OSPF: transmit error
0: OSPF: unknown neighbor
0: HELLO: hello timer mismatch
0: HELLO: extern option mismatch
0: HELLO: virtual neighbor unknown
0: DD: neighbor state low
0: DD: extern option mismatch
0: LS ACK: neighbor state low
0: LS ACK: duplicate ack
0: LS ACK: ACK length wrong
0: LS REQ: empty request
0: LS REQ: wrong length
0: LS UPD: newer self-generate LSA
0: LS UPD: received less recent LSA
0: OSPF routing: next hop not exist
0: ROUTETYPE: wrong type value
Received my own packet
OSPF packet type error
OSPF version error
OSPF checksum error
OSPF area ID error
OSPF area mismatch
OSPF virtual link error
OSPF authentication type error
OSPF authentication key error
OSPF packet too small
4-15
Description