IBM SAN768B-2, Installation, Service And User Manual

Page: 120 / 186

v If a serial console session is used: serial cable and a workstation computer with
a terminal emulator application (such as HyperTerminal for Windows systems or
TIP for Solaris systems)
Verifying the need for replacement
Before replacing a WWN card, verify that the replacement is necessary.
Any of the following events can indicate that the card requires replacement:
v
Status LEDs on the WWN bezel do not reflect the actual status of the
components
v
Power or status LEDs on WWN card indicate a problem
v Problems viewing or modifying the data stored on the WWN card
v
Error messages regarding WWN units #1 or #2
See “WWN bezel and WWN card status” on page 64 for details on checking the
status of the WWN cards. System messages and LED patterns are described in that
section.
Removing the WWN bezel and WWN card
Complete these steps to remove the WWN bezel and WWN card.
Attention: Follow ESD precautions (see “ESD precautions” on page xix).
1.
Open a Telnet session to the SAN768B-2 and log in to the active CP as
admin
.
The default password is
password
.
2. Verify that you are logged into the active CP. Run the haShow command to
determine the active CP.
3. Run the supportSave command on the active CP to capture all settings. If any
problems occur during the replacement, the information will be important for
solving the problem
4. Enter fruReplace wwn from the active CP blade and wait for the phrase, " Do
you wish to continue [y/n]? " to display; then enter y .
5. Wait until the WWN card data is backed up. Do not enter continue until the
mechanical replacement is complete (see “Installing the WWN bezel and
WWN card” on page 91).
switch:admin> frureplace wwn
This is the WWN card hot swap interface.
Continuing from this point will require
the whole process to be completed.
If this process is not complete due to a
power cycle, or CP failover, please follow
the recovery procedure in
Core Switch WWN Card
Replacement Procedure (for appropriate chassis)
Do you wish to continue [y/n]?
Backing up WWN card data, please wait about 25 seconds for
further instruction.
Please install the new FRU now.
If this session lost for any reason, please re-enter the
frureplace command and follow the instructions to complete
the operation.
Please enter the word `continue’ after the new WWN card has
been installed:
6. Wait until all the LEDs on the WWN bezel turn off.
90
SAN768B-2 Installation, Service, and User Guide