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Configuring a Tunnel Group

To establish L2TP service on a router, you need to identify an L2TP tunnel group and specify a number of values that define which access profiles, interface addresses, and other properties to use in creating a tunnel. To identify the tunnel group, include the tunnel-group statement at the [edit services l2tp] hierarchy level:




tunnel-group group-name {

hello-interval seconds;

hide-avps;

l2tp-access-profile profile-name;

local-gateway address address;

maximum-send-window packets;

ppp-access-profile profile-name;

receive-window packets;

retransmit-interval seconds;

service-interface interface-name; 



syslog {



host hostname {

services severity-level;

facility-override facility-name;

log-prefix prefix-value;
}


}



tunnel-timeout seconds;
}

Note: If you delete a tunnel group or mark it inactive, all L2TP sessions in that tunnel group are terminated. If you change the value of the local-gateway address or the service-interface statement, all L2TP sessions using those settings are terminated. If you change or delete other statements at the [edit services l2tp tunnel-group group-name] hierarchy level, new tunnels you establish will use the updated values but existing tunnels and sessions are not affected.

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