Setting the Hello interval
To check the connectivity of a tunnel, the LAC and LNS periodically send each other Hello packets. At receipt of a Hello packet, the LAC or LNS returns a response packet. If the LAC or LNS receives no response packets from the peer within the Hello interval, it retransmits the Hello packet. If it receives no response packets from the peer after transmitting the Hello packet five times, it considers the L2TP tunnel to be down.
To set the Hello interval:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter L2TP group view. | l2tp-group group-number [ mode { lac | lns } ] | N/A |
3. Set the Hello interval. | tunnel timer hello hello-interval | The default setting is 60 seconds. |