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Configuring an Interface to Fill in DD Packets with the Actual MTU
Context
After virtual links are created, different default MTUs may be used on devices provided by different vendors. To ensure consistency, the MTU is set to 0 by default when the interface sends DD packets.
Procedure
- Run system-view
The system view is displayed.
- Run interface interface-type interface-number
The OSPF interface view is displayed.
- Run ospf mtu-enable
The interface is configured to fill in DD packets with the actual MTU and check whether the MTU in DD packets from the neighbor exceeds the MTU of the local end.
By default, the MTU in DD packets sent by an interface is 0.
Setting the MTU in a DD packet will lead to the re-establishment of the neighbor relationship.
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