Allied Telesis AT-S83 - Manual (Page 328)

Chapter 15: Open Shortest Path First (OSPF) Commands
328
IP OSPF MTU
Syntax
ip ospf (A.B.C.D) mtu <576-65535>
no ip ospf (A.B.C.D) mtu <576-65535>
Parameters
A.B.C.D Specifies the IP address of the interface. This is an
optional parameter.
<576-65535> Specifies the MTU size. Choose a value between 576
and 65535.
Description
Use the IP OSPF MTU command to set the MTU size for OSPF to
construct packets based on this value. By default, OSPF uses the
interface MTU derived from the kernel.
When OSPF constructs packets, it uses interface the MTU size as
maximum IP packet size. This command forces OSPF to use the specified
value, overriding the actual interface MTU size.
This command allows an administrator to configure the MTU size the
recognized by the OSPF protocol. It does not configure the MTU settings
on the kernel. OSPF will not recognize MTU size configuration changes
made to the kernel until the MTU size is updated through the CLI.
Use the no form of this command to return the command to its default
value.
Command Mode
Interface mode
Example
The following commands set the MTU size to 1480 on interface 4:
switch# configure terminal
switch(config)# interface xe4
switch(config-if)# ip ospf mtu 1480