HP 8/20q HP StorageWorks 8/20q Fibre Channel Switch installation and reference - Page 46

Recovering a switch using maintenance mode

Page 46 highlights

Review the event browser to determine if excessive port errors are responsible for disabling the port. Look for a message that mentions one of the monitored error types indicating that the port has been disabled, then perform the following procedure: 1. Examine the alarm configuration for the associated error using the show config threshold CLI command. See the show config threshold CLI command in the HP StorageWorks 8/20q Fibre Channel Switch command line interface guide. Are the thresholds and sample window correct? • Yes-Continue • No-Correct the alarm configuration. If the condition remains, continue. 2. Reset the port, then perform an external port loopback test to validate the port and the SFP. For information about testing ports, see the HP StorageWorks 8/20q Fibre Channel Switch command line interface guide or the HP StorageWorks 8/20q Fibre Channel Switch QuickTools switch management user guide. Does the port pass the test? • Yes-Continue • No-Replace the SFP and repeat the test. If the port does not pass the test, contact your authorized maintenance provider. Otherwise continue. 3. Replace the Fibre Channel port cable. Is the problem corrected? • Yes-The procedure is complete. • No-Continue. 4. Inspect the device to which the affected port is connected and confirm that the device and its HBA are working properly. Make repairs and corrections as needed. If the condition remains, contact your authorized maintenance provider. Recovering a switch using maintenance mode A switch can become inoperable or unmanageable for the following reasons: • Firmware becomes corrupt • IP address is lost • Switch configuration becomes corrupt • Password is forgotten In these specific cases, you can recover the switch using maintenance mode. Maintenance mode temporarily returns the switch IP address to 10.0.0.1 and provides opportunities to do the following: • Exiting the maintenance menu (option 0), page 47 • Unpacking a firmware image file in maintenance mode (option 1), page 47 • Resetting the network configuration in maintenance mode (option 2), page 47 • Resetting user accounts in maintenance mode (option 3), page 47 • Copying log files in maintenance mode (option 4), page 48 • Removing the switch configuration in maintenance mode (option 5), page 48 • Remaking the file system in maintenance mode (option 6), page 48 • Resetting the switch in maintenance mode (option 7), page 48 • Updating the boot loader in maintenance mode (option 8), page 48 To recover a switch: 1. Place the switch in maintenance mode by pressing and holding the Maintenance button with a pointed tool until only the Heartbeat LED is illuminated, and then release the button. The Heartbeat LED illuminates continuously when the switch is in maintenance mode. 2. Establish a Telnet session with the switch using the maintenance mode IP address 10.0.0.1. 3. Enter the maintenance mode account name (prom) and password (prom), and press Enter. Switch login: prom Password:xxxx 46

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46
Review the event browser to determine if excessive port errors are responsible for disabling the port. Look
for a message that mentions one of the monitored error types indicating that the port has been disabled,
then perform the following procedure:
1.
Examine the alarm configuration for the associated error using the
show config threshold
CLI
command. See the
show config threshold
CLI command in the
HP StorageWorks 8/20q Fibre
Channel Switch command line interface guide
. Are the thresholds and sample window correct?
Yes—Continue
No—Correct the alarm configuration. If the condition remains, continue.
2.
Reset the port, then perform an external port loopback test to validate the port and the SFP. For
information about testing ports, see the
HP StorageWorks 8/20q Fibre Channel Switch command line
interface guide
or the
HP StorageWorks 8/20q Fibre Channel Switch QuickTools switch management
user guide
. Does the port pass the test?
Yes—Continue
No—Replace the SFP and repeat the test. If the port does not pass the test, contact your authorized
maintenance provider. Otherwise continue.
3.
Replace the Fibre Channel port cable. Is the problem corrected?
Yes—The procedure is complete.
No—Continue.
4.
Inspect the device to which the affected port is connected and confirm that the device and its HBA are
working properly. Make repairs and corrections as needed. If the condition remains, contact your
authorized maintenance provider.
Recovering a switch using maintenance mode
A switch can become inoperable or unmanageable for the following reasons:
Firmware becomes corrupt
IP address is lost
Switch configuration becomes corrupt
Password is forgotten
In these specific cases, you can recover the switch using maintenance mode. Maintenance mode
temporarily returns the switch IP address to 10.0.0.1 and provides opportunities to do the following:
Exiting the maintenance menu (option 0)
, page 47
Unpacking a firmware image file in maintenance mode (option 1)
, page 47
Resetting the network configuration in maintenance mode (option 2)
, page 47
Resetting user accounts in maintenance mode (option 3)
, page 47
Copying log files in maintenance mode (option 4)
, page 48
Removing the switch configuration in maintenance mode (option 5)
, page 48
Remaking the file system in maintenance mode (option 6)
, page 48
Resetting the switch in maintenance mode (option 7)
, page 48
Updating the boot loader in maintenance mode (option 8)
, page 48
To recover a switch:
1.
Place the switch in maintenance mode by pressing and holding the Maintenance button with a pointed
tool until only the Heartbeat LED is illuminated, and then release the button. The Heartbeat LED
illuminates continuously when the switch is in maintenance mode.
2.
Establish a Telnet session with the switch using the maintenance mode IP address 10.0.0.1.
3.
Enter the maintenance mode account name (
prom
) and password (
prom
), and press
Enter
.
Switch login: prom
Password:xxxx