mandatory-lcp

Function

The mandatory-lcp command conducts the mandatory LCP protocol renegotiation of the LNS and the Client.

The undo mandatory-lcp command deletes the renegotiation.

By default, the renegotiation is not conducted.

This command is supported only on the NetEngine 8000 F1A.

Format

mandatory-lcp [ on-mismatch ]

mandatory-lcp on-mismatch strict

undo mandatory-lcp [ on-mismatch ]

undo mandatory-lcp on-mismatch strict

Parameters

Parameter	Description	Value
on-mismatch	Indicates the renegotiation performed when a user LCP parameter is inconsistent, excluding the MRU and authentication type.	Indicates the renegotiation performed when a user LCP parameter on the LNS is inconsistent with that on the LTS or on the LAC, excluding the MRU and authentication type. If a user LCP parameter on the LNS is consistent with that on the LTS or on the LAC, proxy authentication, instead of LCP renegotiation is performed.
strict	Indicates the renegotiation performed when a user LCP parameter is inconsistent, including the MRU and authentication type.	Indicates the renegotiation performed when a user LCP parameter on the LNS is inconsistent with that on the LTS or on the LAC, including the MRU and authentication type,MRU inconsistency will trigger renegotiation only when LNS MRU is less than LAC MRU.

Parameter

Description

Value

on-mismatch

Indicates the renegotiation performed when a user LCP parameter is inconsistent, excluding the MRU and authentication type.

Indicates the renegotiation performed when a user LCP parameter on the LNS is inconsistent with that on the LTS or on the LAC, excluding the MRU and authentication type. If a user LCP parameter on the LNS is consistent with that on the LTS or on the LAC, proxy authentication, instead of LCP renegotiation is performed.

strict

Indicates the renegotiation performed when a user LCP parameter is inconsistent, including the MRU and authentication type.

Indicates the renegotiation performed when a user LCP parameter on the LNS is inconsistent with that on the LTS or on the LAC, including the MRU and authentication type,MRU inconsistency will trigger renegotiation only when LNS MRU is less than LAC MRU.

Views

L2TP group view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
l2tp	write

Usage Guidelines

The mandatory-lcp command enables the LCP renegotiation between the LNS and the client regardless of agent authentication information of the NAS. If some PPP clients do not support the LCP renegotiation, the LCP renegotiation fails. A NAS-initialized VPN client, before a PPP session begins, performs PPP negotiation with the NAS. After the negotiation succeeds, the NAS initializes the tunnel connection and sends the negotiation information to the LNS. According to received information, the LNS judges whether the client is valid or not.

Example

# Conduct the mandatory LCP renegotiation between the LNS and the Client.

<HUAWEI> system-view
[~HUAWEI] l2tp-group huawei
[*HUAWEI-l2tp-huawei] mandatory-lcp