3Com 9100 manual Using Command-Line Interface, Switch does not power up

150APPENDIX C: TROUBLESHOOTING

Switch does not power up:

The Switch 9100 uses a digital power supply with surge protection. In the event of a power surge, the protection circuits shut down the power supply. To reset, unplug the switch for 1 minute, plug it back in, and attempt to power up the switch.

If this does not work, try using a different power source (different power strip/outlet) and power cord.

Using the

Command-Line

Interface

The initial welcome prompt does not display:

Check that your terminal or terminal emulator is correctly configured.

For console port access, you may need to press [Return] several times before the welcome prompt appears.

Check the settings on your terminal or terminal emulator. The settings are 9600 baud, 8 data bits, 1 stop bit, no parity, XON/OFF flow control enabled.

The SNMP Network Manager cannot access the device:

Check that the device IP address, subnet mask, and default router are correctly configured, and that the device has been reset.

Check that the device IP address is correctly recorded by the SNMP Network Manager (refer to the user documentation for the Network Manager).

Check that the community strings configured for the system and Network Manager are the same.

Check that SNMP access was not disabled for the system.

The Telnet workstation cannot access the device:

Check that the device IP address, subnet mask and default router are correctly configured, and that the device has been reset. Ensure that you enter the IP address of the switch correctly when invoking the Telnet facility. Check that Telnet access was not disabled for the switch. If you