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> ip ttl <value>

Sets the time-to-live (TTL) value in the IP header of a tunnel packet.

set interfaces erspan erspantunnel-number ip ttl value
delete interfaces erspan erspantunnel-number ip ttl [ value ]
show interfaces erspan erspantunnel-number ip ttl

The default value is 255.

erspantunnel-number
The identifier of a tunnel interface with an integer for the tunnel-number variable.
value
The value for the TTL field in the IP header of a tunnel packet (the carrier packet). Enter an integer from 0 through 255. When the TTL value is set to 0, a tunnel packet copies the TTL value from the packet being encapsulated (the passenger packet).

Configuration mode


interfaces {
    erspan erspantunnel-number {
        ip {
            ttl value
        }
    }
}

The TTL field of the IP header of a packet limits the lifetime of an IP packet and prevents indefinite packet looping.

Use the set form of this command to set the TTL value in the TTL field of the IP header for a packet that traverses a tunnel interface.

Use the delete form of this command to reset the TTL value to the default setting of 255.

Use the show form of this command to display the current TTL value in the IP header of a tunnel packet.