14
3. Configure the L2TP group information, as described in Table 159.
4. Click Apply.
Table 159 Configuration items
Item Description
L2TP Group Name Specify the name of the L2TP group.
Peer Tunnel Name Specify the peer name of the tunnel.
Local Tunnel Name Specify the local name of the tunnel.
Tunnel Authentication Enable or disable L2TP tunnel authentication in the group. If you
enable tunnel authentication, you need to set the authentication
password.
Either the LAC or LNS end can initiate a tunnel authentication
request. If tunnel authentication is enabled on one end, the
tunnel can be established successfully only if the other end is
also enabled with tunnel authentication, and the two ends are
configured with the same authentication passwords. If tunnel
authentication is disabled on both ends, authentication
passwords do not take effect.
IMPORTANT:
• Typically, you must enable tunnel authentication on both
ends of the tunnel for security. You can disable tunnel
authentication if you want to test the network connectivity
or let the local end receive connections initiated by
unknown peers.
• To change the tunnel authentication password, do so after
tearing down the tunnel. Otherwise, your change does not
take effect.
Authentication Password
PPP
Authentication
Configuration
Authentication
Method
Select the authentication method for PPP users on the local end.
You can select PAP or CHAP. If you do not select an
authentication method, no authentication will be performed.
ISP Domain
Specify the ISP domain for PPP user authentication. You can:
• Click Add to enter the page for adding an ISP domain, as
shown in Figure 368. For information about the
configuratio
n items, see Table 160.
• Select an ISP
domain and click Modify to enter the ISP
domain modification page. For information about the
configuration items, see Table 160.
• Select an ISP
domain and click Delete to delete the ISP
domain.
If you specify an ISP domain, the specified domain is used for
authentication, and IP addresses must be assigned from the
address pool configured in the specified domain.
If you do not specify any ISP domain, the system checks
whether the domain information is carried in a username. If yes,
the domain is used for authentication; otherwise, the default
domain (system by default) is used for authentication.
PPP Address PPP Server IP/Mask Specify the IP address and mask of the local end.