Command:

ip ospf mtu-ignore


Mode:

Router(config-if)#


Syntax:

ip ospf mtu-ignore
no ip ospf mtu-ignore

 

Syntax Description:

This command has no arguments or keywords.

 

Command Description:

To disable OSPF MTU mismatch detection on receiving DBD packets, use the ip ospf mtu-ignore command in interface configuration mode. To reset to default, use the no form of this command.

OSPF checks whether neighbors are using the same MTU on a common interface. This check is performed when neighbors exchange Database Descriptor (DBD) packets. If the receiving MTU in the DBD packet is higher than the IP MTU configured on the incoming interface, OSPF adjacency will not be established.


Example:

The following example disables MTU mismatch detection on receiving DBD packets:

Router(config)#interface serial 0/0
Router(config-if)#ip ospf mtu-ignore


Misconceptions:

None


Related Commands:

None

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