Command Reference Guide

3Com Router 3000 Ethernet Family
Command Reference Guide
Chapter 3 OSPF Configuration Commands
3Com Corporation
3-49
Example
# Configure to transmit poll Hello message from interface serial2/0/0 every 130
seconds.
[3Com -serial2/0/0] ospf timer poll 130
3.1.45 ospf timer retransmit
Syntax
ospf timer retransmit interval
undo ospf timer retransmit
View
Interface view
Parameter
interval: Interval in seconds for re-transmitting LSA on an interface. It ranges from 1 to
65535.The default value is 5 seconds.
Description
Use the ospf timer retransmit command to configure the interval for LSA
re-transmitting on an interface.
Use the undo ospf timer retransmit command to restore the default interval value for
LSA re-transmitting on the interface.
If a router running OSPF transmits a "link state advertisement"(LSA) to the peer, it
needs to wait for the acknowledgement packet from the peer. If no acknowledgement is
received from the peer within the LSA retransmission, this LSA will be re-transmitted.
According to RFC2328, the LSA retransmission between adjacent routers should not
be set too short. Otherwise, unexpected retransmission will be caused.
Example
# Specify the retransmission for LSA transmitting between the interface serial1/0/0 and
the adjacent routers to 12 seconds.
[3Com ] interface serial1/0/0
[3Com -serial1/0/0] ospf timer retransmit 12
3.1.46 ospf trans-delay
Syntax
ospf trans-delay seconds
undo ospf trans-delay