Mtu - ADTRAN 5000 Series Command Reference Manual

Command Reference Guide
mtu <size>
Use the mtu command to configure the maximum transmit unit (MTU) size for the active interface. Use
the no form of this command to return to the default value.
Syntax Description
<size>
Default Values
<size>
Applicable Platforms
This command applies to the NetVanta 1000R, 3000, 4000, and 5000 Series units.
Command History
Release 1.1
Release 11.1
Functional Notes
OSPF will not become adjacent on links where the MTU sizes do not match. If router A and router B are
exchanging hello packets but their MTU sizes do not match, they will never reach adjacency. This is by
design and required by the RFC.
Usage Examples
The following example specifies an MTU of 1200 on the virtual demand interface:
(config)#interface demand 1
(config-demand 1)#mtu 1200
61200990L1-35E
Configures the window size for transmitted packets. The valid ranges for the
various interfaces are listed below:
ATM interfaces
Demand interfaces
Ethernet interfaces
FDL interfaces
HDLC interfaces
Loopback interfaces
Tunnel interfaces
Virtual Frame Relay sub-interfaces
Virtual PPP interfaces
The default values for the various interfaces are listed below:
ATM interfaces
Demand interfaces
Ethernet interfaces
FDL interfaces
HDLC interfaces
Loopback interfaces
Tunnel interfaces
Virtual Frame Relay sub-interfaces
Virtual PPP interfaces
Command was introduced.
Command expanded to include the demand interface.
Copyright © 2005 ADTRAN
Demand Interface Configuration Command Set
64 to 1520
64 to 1520
64 to 1500
64 to 256
64 to 1520
64 to 1500
64 to 18,190
64 to 1520
64 to 1500
1500
1500
1500
256
1500
1500
1500
1500
1500
678