SOURCE: How do i Reset or break in to get reset my
The resetting of the password requires the installation of a console cable to the console port.
Be sure the terminal emulator program is set to VT-100 management
using compatible, 38400 baud rate, no parity, 8 data bits and Console
connection one stop bit.
Use the included cable, or be sure that the pin-out complies with a standard null-modem cable
Once the cable is connected, reboot the switch. Type a Ctrl/C until
you enter the failsafe mode. This will be denoted with the prompt:
“CFE>”
At the prompt execute the following commands:
CFE> passwrd
CFE> reset -sysreset
At this point the password has been reset.
SOURCE: 3Com Baseline Switch 2024 - Switch - 24 ports
Is it hsappening with all the 24 ports or with some ports ?
Might be an indiacation towards the duplex mismatch.
are you getting CRC errors on the interfaces ?
SOURCE: i forgot my admin password
If it's the Power Plus (3C16475BS) model, there should be a reset button inside a small hole on the back. "10 - Recovery Button" Inserting a paperclip or similar to reset. If it's not the Power Plus model and is in fact (3C16475A), this is an unmanaged switch, with no administrative capabilities. You don't need a password.
http://www.3com.com/products/en_US/detail.jsp?tab=features&pathtype=purchase&sku=3C16475BS
SOURCE: Hub power down
Not the type of "switch" where the contacts can burn away. More likely the internal power supply board has been "blown", but result the same...... new switch.
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