tunnel load-sharing

Function

The tunnel load-sharing command enables load balancing.

The undo tunnel load-sharing command disables load balancing.

By default, load balancing is disabled.

This command is supported only on the NetEngine 8000 F1A.

Format

tunnel load-sharing

undo tunnel load-sharing

Parameters

None

Views

L2TP group view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
l2tp	write

Usage Guidelines

Usage Scenario

When the device functions as an LAC to connect to multiple LNSs, the device by default attempts to establish a connection with each LNS in the order in which the LNSs are configured, until an LNS responds to the connection request and a tunnel is established. The other LNSs then function as the backup LNSs.

If an LNS cannot load all the L2TP service, you can allocate the service to multiple LNSs based on weight using the LNS load balancing.

Precautions

Load balancing can be implemented for tunnels in an L2TP group based on the master/backup status, weight, or priority. If tunnels have been configured in an L2TP group, the load balancing configurations cannot be changed.

The tunnel load-sharing and tunnel-per-user commands are mutually exclusive.

The tunnel load-sharing and tunnel priority commands are mutually exclusive.

To implement load balancing based on tunnel attributes delivered by a RADIUS server, you are advised to choose one of the following deployment modes:

Run the tunnel priority command in the L2TP group view to enable priority-based load balancing. Configure the RADIUS server to deliver multiple tag groups with the same Tunnel-Preference value. Configure only one Tunnel-Server-Endpoint value for each tag group.
Run the tunnel load-sharing command in the L2TP group view to enable load balancing. Configure the RADIUS server to deliver one or more tag groups. Configure multiple Tunnel-Server-Endpoint values for each tag group. If multiple tag groups are delivered by the RADIUS server, load balancing is implemented based on the Tunnel-Server-Endpoint values of the first tag group.

Example

# Enable load balancing.

<HUAWEI> system-view
[~HUAWEI] l2tp-group huawei
[*HUAWEI-l2tp-huawei] tunnel load-sharing