IBM Storage Networking SAN256B-7 Installation, Service And User Manual page 175

6. On the active CP blade, run the wwnrecover command and specify the WWN card that you replaced
(WWN 2 or WWN 1) when prompted.
7. If wwnrecover messages prompt for a system reboot, reboot both CP blades to ensure the system is
running with valid WWN card data.
8. Enter the hafailover command to force failover so that the standby CP blade becomes the active
CP blade.
This command is necessary so that the correct IP address for the new card displays for the
ipaddrshow command. For more information on these commands, refer to the Fabric OS Command
Reference Manual.
9. Verify the new card settings by running the following commands and comparing the output with the
original supportsave data:
• chassisname
• chassisshow (look at the WWN and chassis information at the bottom)
• ipaddrshow
• licenseidshow
• switchname
• wwncardshow ipdata
10. If replacing the second WWN card, repeat the previous steps in this procedure for the other card.
11. Install the WWN bezel on the chassis.
a) Orient the bezel on the chassis.
b) Insert and tighten both screws using a Phillips screwdriver.
12. Pack faulty WWN cards in the packaging provided with the replacement cards, and return them to
Brocade Support for failure analysis (FA).
Cold-swap replacement
About this task
Use this procedure when you can interrupt system operation and replace one or both WWN cards with the
system powered down. You can replace one WWN card or both WWN cards, one at a time, with system
power on using steps under "Hot-swap replacement" on page 150.
Note: Be aware that if replacing both WWN cards, the IP addresses on the new WWN cards will be in
effect when the device powers up. If these IP addresses are different from the previous cards, then you
will not be able to establish SSH or other sessions that use the previous IP addresses. You can change IP
addresses on the new cards using the ipaddrset command.
Procedure
1. Unpack the replacement WWN card assembly and save the packaging for the faulty WWN card(s).
The WWN card assemblies are labeled #1 for the left slot and #2 for the right slot.
2. Perform the following steps.
a) Log on to the device and execute the switchcfgpersistentdisable command on the main
switch and other logical switches. The switchcfgpersistentdisable command disables the
switches and ensures they remain disabled after the power is cycled. This allows you to check all
the settings so that you can verify them before placing the device back into production.
switch:admin> switchcfgpersistentdisable
Switch's persistent state set to 'disabled'
If there are other logical switches on your chassis, use the setcontext command to connect to
all the other switches and then run switchcfgpersistentdisable on these switches as well.
Chapter 10. WWN card 151