3Com 3C780 User Guide - Page 56

Accessing the Hub

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2-16 Installing the Hub Accessing the Hub To monitor hub activity and (optionally) configure the hub to suit your particular network environment, you must set up an interface with the hub. You can access the hub in several ways: s Connect a terminal such as a VT100 or similar dumb terminal to the RS-232 serial port on the management module, using a null-modem connector to the terminal. s Connect a PC running terminal emulation software to the RS-232 serial port on the management module, using a null-modem connector to the PC. s Attach a modem to the serial port on the management module. (Refer to the section "Installing an Optional Modem" later in this chapter.) s Access the hub across the network using the TCP Telnet protocol. (Refer to the section "Using Telnet to Access the Hub" later in this chapter.) Once one of these connection is made, you can use the console commands to monitor and configure the hub. Two console command sets are available: the management console command mode and the primitive console command mode. These command modes are discussed in Chapter 3. The commands in these command sets are listed and described in Appendix C, "Commands." Instructions for using the commands are provided in Chapter 4, "Setting Up the Hub." Changing the Serial Port's Baud Rate When you connect a terminal or modem to the hub, you may need to change the baud rate of the serial port. The serial port's default baud rate is 9600. To display the serial port's baud rate, enter the show baud command.

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2-16
Installing the Hub
Accessing the Hub
To monitor hub activity and (optionally) configure the hub to suit your
particular network environment, you must set up an interface with the hub.
You
can access the hub in several ways:
■
Connect a terminal such as a VT100 or similar dumb terminal to the
RS-232 serial port on the management module, using a null-modem
connector to the terminal.
■
Connect a PC running terminal emulation software to the RS-232 serial
port on the management module, using a null-modem connector to the PC.
■
Attach a modem to the serial port on the management module.
(Refer to
the section “Installing an Optional Modem” later in this chapter.)
■
Access the hub across the network using the TCP Telnet protocol.
(Refer
to the section “Using Telnet to Access the Hub” later in this chapter.)
Once one of these connection is made, you can use the console commands to
monitor and configure the hub.
Two console command sets are available: the
management console command mode and the primitive console command
mode.
These command modes are discussed in Chapter 3.
The commands in
these command sets are listed and described in Appendix C, “Commands.”
Instructions for using the commands are provided in Chapter 4, “Setting Up the
Hub.”
Changing the Serial Port’s Baud Rate
When you connect a terminal or modem to the hub, you may need to change the
baud rate of the serial port.
The serial port’s default baud rate is 9600.
To display the serial port’s baud rate, enter the
show baud
command.