mandatory-lcp

Function

The mandatory-lcp command enables Link Control Protocol (LCP) re-negotiation between the LNS and the client.

The undo mandatory-lcp command disables LCP re-negotiation.

By default, LCP re-negotiation is disabled.

Format

mandatory-lcp

undo mandatory-lcp

Parameters

None

Views

L2TP group view

Default Level

2: Configuration level

Usage Guidelines

You can run the mandatory-lcp command to enable LCP re-negotiation between the LNS and the client regardless of agent authentication information of the NAS.

If some PPP clients do not support the LCP re-negotiation, LCP re-negotiation fails.

A NAS-initiated VPN client implements PPP negotiation with the NAS before a PPP session starts. After the negotiation succeeds, the NAS initializes a tunnel connection and sends the negotiation information to the LNS. According to the received information, the LNS determines whether the client is legitimate.

Example

# Enable LCP re-negotiation.

<sysname> system-view
[sysname] l2tp-group 1
[sysname-l2tp-1] mandatory-lcp