Vyatta NOS documentation

Learn how to install, configure, and operate Vyatta Network Operating System (Vyatta NOS), which helps to drive our virtual networking and physical platforms portfolio.

interfaces erspan erspan <tunnel-number> mtu <bytes>

Sets the maximum transfer unit (MTU) size for an ERSPAN tunnel interface.

set interfaces erspan erspantunnel-number mtu bytes
delete interfaces erspan erspantunnel-number mtu [ bytes ]
show interfaces erspan erspan mtu

The default MTU size of 1500.

erspantunnel-number
The identifier of a tunnel interface with an integer for the tunnel-number variable.
bytes
The MTU size in bytes for the ERSPAN tunnel interface. Enter a value from 68 through 8024. The default size is 1500.

Configuration mode


interfaces {
    erspan erspantunnel-number {
        mtu bytes
    }
}

Use this command to set the size of the maximum transfer unit (MTU) for encapsulated packets that traverse a tunnel.

The ERSPAN specification does not support packet fragmentation. Packets larger than the MTU are dropped rather than truncated. To avoid dropping packets, configure a large MTU value.

Use the set form of this command to set the MTU size for encapsulated packets traversing the tunnel.

Use the delete form of this command to reset the MTU size to its default setting of 1500 bytes.

Use the show form of this command to display the MTU size for encapsulated packets.