A LAC and an LNS exchange Hello packets to detect tunnel connectivity.
To check the connectivity of a tunnel established between a LAC and an LNS, the LAC and the LNS exchange hello packets periodically.
If the LAC or LNS fails to receive hello response packets from each other in a specified period, the packets are retransmitted. If the maximum number of retransmission times exceeds a specified number (see Configuring Control Packet Retransmission), the L2TP tunnel is regarded disconnected, and all sessions on the tunnel are deleted.
The system view is displayed.
The L2TP group view is displayed.
An interval for sending Hello packets is configured.
The NetEngine 8000 F is configured to send a Hello packet only after receiving a Hello packet from the peer end.
The configuration is committed.