22 CCM840/1640 Installer/User Guide
To display modem confi guration information:
Issue a Show Server CLI command.
SHOW SERVER CLI
For more information, see Show Server CLI command in Chapter 5.
Connecting to devices using PPP
The CCM supports remote PPP access using an auto-answer modem that
answers calls. A dial-in client and the CCM establish the PPP protocol.
The PPP dial-in may be used to access a remote CCM that does not warrant a
WAN (Wide Area Network) link to the Ethernet interface. In this case, the PPP
connection allows a remote PC with Telnet capability to dial the CCM and then
establish a Telnet connection to a CCM port.
The PPP dial-in may also be used to access a subnet containing remote CCM
devices in the event of a WAN link failure. In this case, the PPP provides an
alternate path to one or more remote CCM devices.
Once the PPP connection is established, you must launch an application
that connects to the CCM or to one of its ports. The PPP connection is only a
communications interface to the CCM.
The CCM implements a PPP server that uses CHAP (Challenge Authentication
Protocol). Passwords are not accepted in the clear on PPP connections.
PPP is disabled by default.
To enable or disable a PPP server on the serial CLI port:
1. To enable a PPP server on the serial CLI port, issue a Show Server CLI
command to ensure that a serial CLI port has been defi ned.
SHOW SERVER CLI
2. Issue a Server PPP command with the Enable parameter.
SERVER PPP ENABLE LOCALIP=<local_ip> REMOTEIP=<rem_ip>
[MASK=<subnet>]
You must specify local and remote IP addresses to be used for the CCM
and client ends of the PPP connection respectively. You are prompted to
confi rm or cancel the changes. Enter Y to confi rm or N to cancel.
3. To disable a PPP server, issue a Server PPP command with the
Disable parameter.
SERVER PPP DISABLE
