3Com 3C780 User Guide - Page 77

Primitive Console Commands

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Configuring the Hub 3-9 Primitive Console Commands The "primitive" console commands, which are a subset of the management console commands, are accessible in case of unusual system situations. For example, you can access the primitive console command mode if: s You forget the password. (You do not need a password to access the primitive console command mode. Once in this mode, you can set a new password.) s You have downloaded a faulty image into the flash EPROM, and you must reset the hub. s You have configured the hub with illegal parameters and nothing can operate. You must reset the hub. Unlike the management console command mode, when the primitive console command mode is active, no connection to the ring exists. In primitive mode you can change only those parameters that involve nonvolatile RAM. You can access the primitive console command mode only via a terminal attached to the serial port on the management module. Remote access through a modem or via Telnet is not supported. Accessing the Primitive Console Command Mode To access the primitive console command mode, follow these steps: 1. Press the RESET button once. The RESET button is recessed on the management module. Use a bent paper clip or other small, pointed object to press the RESET button. NOTE: You cannot access the primitive console command mode by typing the reset command. 2. Watch the STATUS LED on the management module. The STATUS LED is normally amber. When the STATUS LED flashes amber/green, you have 10 seconds to press the RESET button again.

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3-9
Configuring the Hub
Primitive Console Commands
The “primitive” console commands, which are a subset of the management
console commands, are accessible in case of unusual system situations.
For
example, you can access the primitive console command mode if:
■
You forget the password.
(You do not need a password to access the
primitive console command mode.
Once in this mode, you can set a new
password.)
■
You have downloaded a faulty image into the flash EPROM, and you must
reset the hub.
■
You have configured the hub with illegal parameters and nothing can
operate.
You must reset the hub.
Unlike the management console command mode, when the primitive console
command mode is active, no connection to the ring exists.
In primitive mode
you can change only those parameters that involve nonvolatile RAM.
You can access the primitive console command mode only via a terminal
attached to the serial port on the management module.
Remote access through a
modem or via Telnet is not supported.
Accessing the Primitive Console Command Mode
To access the primitive console command mode, follow these steps:
1.
Press the RESET button once.
The RESET button is recessed on the management module.
Use a bent
paper clip or other small, pointed object to press the RESET button.
NOTE:
You cannot access the primitive console command mode by typing the
reset
command.
2.
Watch the STATUS LED on the management module.
The STATUS LED is normally amber.
When the STATUS LED flashes
amber/green, you have 10 seconds to press the RESET button again.