2 – General Description
Chassis Controls and LEDs
59043-01 A 2-5
2.2.1
Maintenance Button
The Maintenance button is dual function control on the CPU module that resets
the switch or places the switch in maintenance mode. Maintenance mode sets the
IP address to 10.0.0.1 and provides access to the switch for maintenance
purposes when flash memory or the resident configuration file is corrupted. Refer
to ”Recovering a Switch” on page 5-12 for information about maintenance mode.
2.2.1.1
Resetting a Switch
To reset the switch, use a pointed tool to press and release (less than 4 seconds)
the Maintenance button. The switch will respond as follows:
1. All of the chassis LEDs will illuminate and then extinguish leaving only the
Input Power LED illuminated.
2. After approximately 1 minute, the power-on self test begins illuminating all
chassis LEDs.
3. When the POST is complete, the chassis LEDs extinguish leaving the Input
Power LED illuminated and the Heartbeat LED flashing once per second.
2.2.1.2
Placing the Switch in Maintenance Mode
To place the switch in maintenance mode, do the following:
1. Isolate the switch from the fabric.
2. Press and hold the Maintenance button with a pointed tool for about 4
seconds. When the Input Power LED alone is illuminated, release the
button.
3. After approximately 1 minute, the power-on self test begins illuminating all
chassis LEDs.
4. When the POST is complete, the chassis LEDs extinguish leaving the Input
Power LED and the Heartbeat LED illuminated. The Heartbeat LED
illuminates continuously while the switch is in maintenance mode.
To exit maintenance mode and return to normal operation, press and release the
Maintenance button to reset the switch.
