Cisco Stuff

Because I always forget, and end up having to scour Google:

Standard Break Key Sequence Combinations During Password Recovery for Cisco Routers.

The most important bit here, for me, is “How to Simulate a Break Key Sequence”:

This is useful if your terminal emulator doesn’t support the break key, or if a bug prevents it from sending the correct signal (the hyperterminal under Windows NT used to suffer from this behavior):

  1. Connect to the router with the following terminal settings:
    1200 baud rate
    No parity
    8 data bits
    1 stop bit
    No flow control

You no longer see any output on your screen. This is normal.

  1. Power cycle (switch off and then on) the router and THEN press the spacebar for 10-15 seconds. This generates a signal similar to the break sequence. [Here it helps to count to 2 after powering on before hitting the space bar].
  2. Disconnect your terminal and reconnect with a 9600 baud rate. You should now be in ROM Monitor mode.

This is important for me because the very wonderful (but abandonware?) <a href=http://homepage.mac.com/dalverson/zterm/">ZTerm terminal emulator for OSX does not seem to pass the correct break sequence to a Cisco router.

And the next most important link, Cisco Password Recovery Procedures.