Brocade Communications Systems DCX Backbone Hardware Installation Manual page 112

WWN card removal and replacement
5. If performing the power-down replacement procedure, perform the following steps. If hot-swapping WWN cards, skip to step 6.
a) Log in to the chassis 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 the settings before placing the chassis 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.
b) Power down the entire chassis.
6. Remove the screws from the WWN bezel on the back of the chassis. Pull the bezel away from the chassis and set it aside. The
two WWN cards are now visible.
FIGURE 37 Removal and replacement of the WWN bezel (logo plate) and WWN card
7. Depending on the WWN card removed, label the card and cables with #1 for the left side and #2 for the right side for future
reference.
8. Disconnect the WWN cable by depressing the cable connector latch and pulling the connector from the WWN module.
9. Hold the WWN card by its edges and gently pull it out from the chassis.
10. Set the WWN card on a static-free surface, such as a grounding pad.
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Brocade DCX Backbone Hardware Installation Guide
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