OSPF Configuration Commands 213
Using the undo ospf timer retransmit command, you can restore the default
interval value for LSA re-transmission on an interface.
When a router transmits a Link State Advertisement (LSA) to the peer, it waits for
the acknowledgement packet. If no acknowledgement is received from the
neighbor within the time you set using this command, the LSA is re-transmitted.
According to RFC2328, the LSA retransmit between adjacent routers should not
be set too short to avoid unexpected re-transmission.
Example
To set the retransmit interval between the interface Vlan-interface 1 and the
adjacent routers to 12 seconds, enter the following:
<SW5500>system-view
System View: return to User View with Ctrl+Z.
[SW5500]interface Vlan-interface 1
[SW5500-Vlan-interface1]ospf timer retransmit 12
ospf trans-delay Syntax
ospf trans-delay
value
undo ospf trans-delay
View
VLAN Interface view
Parameter
value
Enter the LSA transmission delay, in seconds, in the range 1 to 3600. By
default, the value is 1 second.
Description
Using the ospf trans-delay command, you can configure the LSA transmission
delay on an interface.
Using the undo ospf trans-delay command, you can restore the default value
of the LSA transmission delay.
LSA will age in the "link state database" (LSDB) of the router as time goes by (add
1 for every second), but it will not age during network transmission. Therefore, it is
necessary to add a period of time set by this command to the aging time of LSA
before transmitting it.
Example
To set the LSA transmission delay to three seconds on interface Vlan-interface 1,
enter the following:
<SW5500>system-view
System View: return to User View with Ctrl+Z.
[SW5500]interface Vlan-interface 1
[SW5500-Vlan-interface1]ospf trans-delay 3
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