Avaya G430 Manual page 440

The router
infinite: The tunnel does not update the MTU, and its value remains permanent
Setting up a GRE tunnel
Procedure
1. Enter interface tunnel, followed by a number identifying the tunnel, to create
2. In the Tunnel interface context, enter tunnel source, followed by the public IP
3. In the Tunnel interface context, enter tunnel destination, followed by the IP
4. In most cases, it is recommended to configure keepalive in the tunnel so that the
440 Administering Avaya G430 Branch Gateway
the new Tunnel interface.
If you are changing the parameters of an existing tunnel, enter interface
tunnel, followed by a number identifying the tunnel, to enter the Tunnel context.
For example:
Gxxx-001(super)# interface tunnel 2
Gxxx-001(super-if:Tunnel 2)#
address of the local tunnel endpoint, to set the source address of the tunnel.
For example:
Gxxx-001(super-if:Tunnel 2)# tunnel source 70.70.70.2
Done!
Gxxx-001(super-if:Tunnel 2)#
address of the remote tunnel endpoint, to set the destination address of the
tunnel.
For example:
Gxxx-001(super-if:Tunnel 2)# tunnel destination 20.0.1.1
Done!
Gxxx-001(super-if:Tunnel 2)#
Note:
The Branch Gateway does not check whether the configured tunnel source IP
address is an existing IP address registered with the Branch Gateway router.
tunnel's source interface can determine and inform the host if the tunnel is down.
For more information on keepalive, see
To configure keepalive for a Tunnel interface, enter keepalive in the Tunnel
interface context, followed by the length (in seconds) of the interval at which the
source interface sends keepalive packets, and the number of retries necessary in
order to declare the tunnel down.
Comments? infodev@avaya.com
Keepalive feature on page 438.
October 2013