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Cisco SD-WAN
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Viptela Documentation


system system-tunnel-mtu—Configure the MTU to use on the tunnels that send OMP control traffic between Viptela devices. These tunnels are internal tunnels used by the devices to exchange control traffic. This MTU value is not related to, and has no effect on, interface MTUs.

Generally, you never need to modify the system tunnel MTU. The only case when you might consider configuring this parameter is when you are adjusting the TCP MSS value.

vManage Feature Template

For all Viptela devices:

Configuration ► Templates ► System

Command Hierarchy

  system-tunnel-mtu mtu


MTU size to use on tunnels that carry OMP control traffic.
Range: 500 through 2000 bytes
Default: 1024 bytes

Operational Commands

show running-config system


Explicitly configure the system tunnel MTU to the default value of 1000 bytes:

vEdge(config-system)# system-tunnel-mtu 1000

Release Information

Command introduced in Viptela Software Release 14.1.​

Additional Information


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