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3Com Switch 7750 Series
Command Reference Guide – Routing Protocol Chapter 3 OSPF Configuration Commands
3-18
Field Description
OSPF: wrong version OSPF version error
OSPF: wrong checksum OSPF checksum error
OSPF: wrong area id OSPF area ID error
OSPF: area mismatch OSPF area mismatch
OSPF: wrong virtual link OSPF virtual link error
OSPF: wrong authentication
type
OSPF authentication type error
OSPF: wrong authentication
key
OSPF authentication key error
OSPF: too small packet OSPF packet too small
OSPF: packet size > ip length OSPF packet size exceeds IP packet length
OSPF: transmit error OSPF transmission error
OSPF: interface down OSPF interface is down, unavailable
OSPF: unknown neighbor OSPF neighbors are unknown
HELLO: netmask mismatch Network mask mismatch
HELLO: hello timer mismatch Interval of HELLO packet is mismatched
HELLO: dead timer mismatch Interval of dead neighbor packet is mismatched
HELLO: extern option
mismatch
Extern option of Hello packet is mismatched
HELLO: router id confusion Hello packet: Router ID confusion
HELLO: virtual neighbor
unknown
Hello packet: unknown virtual neighbor
HELLO: NBMA neighbor
unknown
Hello packet: unknown NBMA neighbor
DD: neighbor state low
Database description (DD) packet: asynchronous
neighbor state
DD: unknown LSA type DD packet: unknown LSA type
DD: router id confusion DD packet: router id unidentifiable
DD: extern option mismatch DD packet: external route flag error
LS ACK: neighbor state low
Link state acknowledgment (LS ACK) packet:
asynchronous neighbor state
LS ACK: wrong ack Link state acknowledgment packet: ack error
LS ACK: duplicate ack Link state acknowledgment packet: ack duplication
LS ACK: unknown LSA type
Link state acknowledgment packet: unknown LSA
type