TROUBLESHOOTING

Upgrading Firmware via the Serial Port

The switch contains three firmware components that can be upgraded; the diagnostics (or Boot-ROM) code, the runtime operation code, and the loader code. The runtime code can be upgraded via the switch’s RS-232 serial console port, via a network connection to a TFTP server, or using SNMP management software. The diagnostics and the loader code can be upgraded only via the switch’s RS-232 serial console port.

Note: You can use the switch’s Web Interface to download runtime code via TFTP (see “Downloading System Software from a Server” on page 2-17). Downloading large runtime code files via TFTP is normally much faster than downloading via the switch’s serial port.

You can upgrade switch firmware by connecting a PC directly to the serial Console port on the switch’s front panel and using VT100 terminal emulation software that supports the XModem protocol (see “Required Connections” on page 1-3).

1.Connect a PC to the switch’s Console port using a null-modem or crossover RS-232 cable with a female DB-9 connector.

2.Configure the terminal emulation software’s communication parameters to 9600 baud, 8 data bits, 1 stop bit, no parity, and set flow control to none.

3.Power cycle the switch.

4.When the switch initialization screen appears, enter firmware-download mode by pressing <Ctrl><u> immediately after the diagnostic test results. Screen text similar to that shown on the following page displays:

A-2

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SMC Networks SMC7724M/VSW manual Upgrading Firmware via the Serial Port