Logging In Using Modem; Introduction; Modem Connection Establishment - H3C S5810 Series Operation Manual

4

Logging In Using Modem

When logging in using modem, go to these sections for information you are interested in:

Introduction

Configuration on the Administrator Side
Configuration on the Switch Side

Modem Connection Establishment

Introduction
You may log in your switch from its console port from a remote device across a PSTN with a pair of
modems in between. When your switching network fails, this allows you to remotely configure your
switch, retrieve logs and warning messages, and locate the problem.
To log into your switch in this way, you need to configure the terminal and the switch properly, as listed
in the following table.
Table 4-1 Requirements for logging into a switch using a modem
Item
Administrator side
Switch side
Modem Connection Establishment
Step 1: Configure the user name and password on the switch. Refer to
Configuration with Authentication Mode Being
Authentication Mode Being
Being Scheme for more.
Step 2: Perform the following configuration on the modem directly connected to the switch.
AT&F ----------------------- Restore the factory settings
ATS0=1 ----------------------- Configure to answer automatically after the first ring
AT&D ----------------------- Ignore DTR signal
AT&K0 ----------------------- Disable flow control
AT&R1 ----------------------- Ignore RTS signal
The PC can communicate with the modem connected to it.
The modem is properly connected to PSTN.
The telephone number of the switch side is available.
The modem is connected to the Console port of the switch
properly.
The modem is properly configured.
The modem is properly connected to PSTN and a telephone set.
The authentication mode and other related settings are
configured on the switch. Refer to
Password, and Console Port Login Configuration with Authentication Mode
4-1
Requirement
Table
None, Console Port Login Configuration with
2-3.
Console Port Login