How to Reset Password on a SMC 6128L2 Tiger Switch

  1. Establish a console connection to the switch.
  2. Disconnect the power to the switch.
  3. Reconnect the power to the switch, and press CTRL-U during boot up.
  4. At this point you should receive a password prompt.  The password should be mercury.  Note, there is a delayed response from the console.
  5. You should now see a list of config and operation files.  Look for the config file that has a 1 next to it in the S/UP field – this will be the config file that is loading with the bad/unknown password.  Press “D” to delete a file, type the name of the file, it is case sensitive, so type the filename as it is displayed.  The deletion can takes about 30 seconds to complete.
  6. Press “Q” to quit, if no startup file is set it will default back to the factory default configuration.
  7. If it worked, the login will be back to Username: admin and  Password: admin, as the default login.

ICMP Being Blocked From a Separated Internal Network on a Windows 10 Host

If you have a Windows 10 host on a network, let’s say 192.168.100.28, and a monitoring host on a server network, let’s say 192.168.200.12.  Other hosts that are on the 192.168.100.0/24 network are currently able to ping the Windows 10 host but not your monitoring host.  The easy fix is to open an elevated command prompt, and then type:


netsh firewall set icmpsetting type=all mode=enable