The re-establish-session command allows a host to re-establish a PPP session if the previous PPP session has yet to be terminated. The only way for a host to reconnect is to wait for the health check to fail or a manual termination by the operator. To allow a faster reconnect, the feature allows a PADI request to terminate the host previous session and allow the host to re-establish a new PPP session. As the old PPP session terminates, the accounting record also stops. The new PPP session starts a new accounting record; this is to ensure that the subscriber is not be charged for the unused time in the previous PPP session.
Subscribers that use credit-control-policy along with PPP re-establish-session can experience a longer attempt at re-establishing a PPP connection.
When PPP subscribers closes an L2TP connection, the terminate cause on the accounting record would show ‟user-request”. For cases, where PPP re-establishment is enabled, stale connections are closed without requests. The terminate cause on the accounting record would show ‟loss of service”.