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mtu
serial description
Use to configure the MRU size for the interface.
Specify a value in the range 4–9996 bytes.
Coordinate this value with the network administrator on the other end of the
line.
If you set this value with a different value for another protocol, such as IP, the
router uses the lower value. The lower MRU might cause unexpected results in
the network.
Example
host1(config-if)#mru 1500
Use the no version to restore the default, 1600 bytes.
See mru.
Use to configure the MTU size for the interface.
Specify a value in the range 4–9996 bytes.
You should coordinate this value with the network administrator on the other
end of the line.
You can set a different MTU value in higher-level protocols, such as IP. If you do,
the router uses the lower value. The lower MTU might cause unexpected results
in the network.
Example
host1(config-if)#mtu 1500
Use the no version to restore the default, 1600 bytes.
See mtu.
Use to assign a text description or an alias to a serial HDLC interface.
You can use this command to help you identify the interface and keep track of
interface connections.
The description or alias can be a maximum of 80 characters.
Use "show interfaces serial" on page 171 to display the text description.
Example
host1(config-if)#serial description ottawa012 hdlc channel
Use the no version to remove the text description or alias.
See serial description.
Chapter 4: Configuring Channelized OCx/STMx Interfaces
Configuration Tasks
141
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