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Logging in through modems
Introduction
The administrator can use two modems to remotely maintain a switch through its AUX port over the Public
Switched Telephone Network (PSTN) when the IP network connection is broken.
Configuration requirements
By default, no authentication is needed when you log in through modems, and the default user privilege
level is 3.
To use this method, perform necessary configurations at both the device side and administrator side.
The following table shows the configuration requirements of remote login through the AUX port by using
modem dial-in:
Object Requirement
The PC is correctly connected to the modem.
The modem is connected to a telephone cable that works properly.
Administrator side
The telephone number of the remote modem connected to the AUX port of the
remote switch is obtained.
The AUX port is correctly connected to the modem.
Configurations have been configured on the modem.
The modem is connected to a telephone cable that works properly.
Device side
Authentication configuration has been completed on the remote switch.
Login procedure
1.
Set up a configuration environment as shown in
: connect the serial port of the PC and
the AUX port of the device to a modem respectively.
Figure 33
Set up a configuration terminal
PC
PSTN
Modem
Modem
Device
AUX port
Serial
cable
Serial
cable
Telephone
cable
Telephone
cable
2.
Configuration on the administrator side
The PC and the modem are correctly connected, the modem is connected to a telephone cable, and the
telephone number of the remote modem connected to the AUX port of the remote switch is obtained.
