Number of LNSs that can be connected to the AR used as the LAC

1

The AR used as the LAC can connect to a maximum of four LNSs. The LNS IP address can be specified using the start l2tp { ip <ip-address> } &<1-4> { domain <domain-name> | fullusername <user-name> } command. A maximum of four IP addresses can be configured to back up each other. The LNS that was configured first has the highest priority.

Other related questions:
Does an AR support primary and secondary LNSs
L2TP supports primary and secondary LNSs. When the primary LNS fails, services are switched to the secondary LNS. However, L2TP connection requests initiated by the LAC cannot reach the primary LNS. To ensure that L2TP connection requests are sent to the secondary LNS, you must configure the IP address of the secondary LNS on the LAC, so that the LAC sendsthe request packets to the address of the secondary LNS when the first IP address is unreachable. A maximum of four LNS addresses can be configured.

Does the AR support active and standby LNSs
The AR supports active and standby LNSs. When the active LNS fails, services are switched to the standby LNS and L2TP connection requests initiated by the LAC cannot reach the active LNS. The IP address of the standby LNS can be configured on the LAC. When the first address is unreachable, L2TP connection requests are sent to the second address based on the configuration sequence. A maximum of four LNS addresses can be configured on the AR.

Can L2TP be used in scenarios where active and standby LNSs are deployed
L2TP can be used in scenarios where active and standby LNSs are deployed. When the active LNS fails, services are switched to the standby LNS. However, L2TP connection requests initiated by the LAC cannot reach the active LNS. To ensure that L2TP connection requests are sent to the standby LNS, you must configure the IP address of the standby LNS on the LAC, so that when the first IP address is unreachable, the LAC sends the request packets to the address of the standby LNS. You can configure IP addresses of a maximum of four LNSs on the LAC.

Can the interface address of the AR router used as the L2TP LAC and VT interface address of the LNS be on different network segments
The interface address of the AR router used as the L2TP LAC and VT interface address of the LNS can be on different network segments. The LAC and LNS can communicate with each other, but it is recommended that the interface address of the AR router used as the L2TP LAC and VT interface address of the LNS on the same network segment.

If you have more questions, you can seek help from following ways:
To iKnow To Live Chat
Scroll to top