64 CHAPTER 4: L OGGING IN USING M ODEMn The above configuration is unnecessary to the modem on the administrator side.The configuration commands and the output of different modems may differ.Refer to the user manual of the modem when performing the aboveconfiguration.Switch Configurationn After logging in to a switch through its console port by using a modem, you willenter the AUX user interface. The corresponding configuration on the switch is thesame as those when logging in to the switch locally through its console portexcept that■ When you log in through the console port using a modem, the baud rate ofthe console port is usually set to a value lower than the transmission speed ofthe modem. Otherwise, packets may get lost.■ Other settings of the console port, such as the check mode, the stop bits, andthe data bits, remain the default.The configuration on the switch depends on the authentication mode the user isin. Refer to Table 6 for the information about authentication mode configuration.Configuration on switch when the authentication mode is noneRefer to section “Console Port Login Configuration with Authentication ModeBeing None” on page 35.Configuration on switch when the authentication mode is passwordRefer to section “Console Port Login Configuration with Authentication ModeBeing Password” on page 38Configuration on switch when the authentication mode is schemeRefer to section “Console Port Login Configuration with Authentication ModeBeing Scheme” on page 41.Modem ConnectionEstablishmentStep 1: Configure the user name and password on the switch. Refer to section“Console Port Login Configuration with Authentication Mode Being None” onpage 35, section “Console Port Login Configuration with Authentication ModeBeing Password” on page 38, and section “Console Port Login Configuration withAuthentication Mode Being Scheme” on page 41 for more.Step 2: Perform the following configuration on the modem directly connected tothe switch.AT&F ----------------------- Restore the factory settingsATS0=1 ----------------------- Configure to answer automatically after the first ringAT&D ----------------------- Ignore DTR signalAT&K0 ----------------------- Disable flow controlAT&R1 ----------------------- Ignore RTS signalAT&S0 ----------------------- Set DSR to high level by forceATEQ1&W ----------------------- Disable the modem from returning command response and the result,save the changesYou can verify your configuration by executing the AT&V command.
