L2TP drain

You can prevent the creation of new Layer 2 Tunneling Protocol (L2TP) sessions, destinations, and tunnels at an LNS or a LAC for administrative purposes. To configure this feature, use the drain statement at the [edit services l2tp] hierarchy level. You can configure this feature at the global level or for a specific destination or tunnel. Configuring this feature on a router sets the administrative state of the L2TP session, destination, or tunnel to drain, which ensures that no new destinations, sessions, or tunnels are created at the specified LNS or LAC.