Command Reference Guide

50 ● mandatory-lcp 3Com Router 5000 Family and Router 6000 Family
Command Reference
mandatory-lcp
Purpose Use the mandatory-lcp command to allow LNS and client to renegotiate Link
Control Protocol (LCP) between them.
Use the undo mandatory-lcp command to disable LCP renegotiation.
Syntax mandatory-lcp
undo mandatory-lcp
Parameters None
Default By default, LCP is not renegotiated.
Example Enable LCP renegotiation.
[3Com-l2tp1] mandatory-lcp
View This command can be used in the following views:
■ L2TP Group view
Description Concerning NAS-Initialized VPN client, PPP negotiation will be first performed with
Network Access Server (NAS) at the beginning of a PPP session. If the negotiation is
successful, the access server will initiate the tunnel connection and transmit the
information collected during the negotiation to LNS. LNS will judge whether the user
is legal based on the information. The mandatory-lcp command can be used to
force LNS and client to renegotiate LCP. In this case, NAS agent authentication
information is ignored. If PPP clients do not support LCP renegotiation, LCP
renegotiation will fail.
Related Command: mandatory-chap