Command:

ip ospf flood-reduction


Mode:

Router(config-if)#


Syntax:

ip ospf flood-reduction
no ip ospf flood-reduction

 

Syntax Description:

This command has no arguments or keywords.

 

Command Description:

By default, OSPF routers refresh their LSAs by flooding them every thirty minutes. If the topology has not changed, then this flooding can cause unnecessary congestion.

This command is disabled by default.

All routers supporting the OSPF demand circuit are compatible and can interact with routers supporting flooding reduction.


Example:

The following example reduces the flooding of unnecessary LSAs on serial interface 0:

Router(config-if)#interface serial 0
Router(config-if)#ip ospf flood-reduction


Misconceptions:

None


Related Commands:

show ip ospf interface show ip ospf neighbor

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