HP 8/20q HP StorageWorks 8/20q Fibre Channel Switch installation and reference - Page 13
Maintenance button
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Maintenance button The Maintenance button (Figure 2) is a dual-function momentary switch on the front panel. Its purpose is to reset the switch or to place 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. For more information, see "Recovering a switch using maintenance mode" on page 46. Resetting a switch To reset the switch, press and hold the Maintenance button with a pointed tool for less than 2 seconds. The switch will respond as follows: 1. All the switch LEDs will illuminate except the System Fault LED. 2. After approximately 1 minute, the power-on self test (POST) begins, extinguishing the Heartbeat LED. 3. When the POST is complete, the Input Power LED is illuminated and the Heartbeat LED is flashing once per second. Placing the switch in maintenance mode To place the switch in maintenance mode: 1. Isolate the switch from the fabric. 2. Press and hold the Maintenance button with a pointed tool for a few seconds until only the Heartbeat LED (Figure 2) is illuminated. Continue holding the maintenance button until the Heartbeat LED goes off, then release the button. 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 momentarily to reset the switch. 8/20q Fibre Channel Switch installation and reference guide 13