HP Cisco MDS 9120 Cisco MDS 9000 Family CLI Configuration Guide, Release 3.x ( - Page 322

Managing SSMs and Supervisor Modules Chapter 11 Managing Modules Send documentation comments to [email protected] Managing SSMs and Supervisor Modules This section describes the considerations for replacing SSMs and supervisor modules and for upgrading and downgrading Cisco MDS SAN-OS releases. Considerations for Replacing SSMs and Supervisor Modules If you replace an SSM or supervisor module, you should consider the following: • If you replace an SSM with another SSM and the boot image is on bootflash:, respectively, you can leave the boot image installed on the active supervisor. • If you replace an SSM with another SSM and the SSI boot image is on the modflash:, the SSM might not initialize. See the "Recovering an SSM After Replacing Corrupted CompactFlash Memory" section on page 11-28. • If you replace an SSM with any other module, you can leave the boot image installed on the active supervisor or remove it. The active supervisor module detects the module type and boots the module appropriately. • If you replace a supervisor module in a switch with active and standby supervisors, no action is required because the boot image is automatically synchronized to the new supervisor module. • If you replace a supervisor module in a switch with no standby supervisor, you need to reimplement the configuration on the new supervisor. Recovering an SSM After Replacing Corrupted CompactFlash Memory In Cisco MDS SAN-OS Release 2.1(2) and later, you use the CompactFlash memory (modflash:) on the SSM to store the SSI image. If the modflash: on the SSM is replaced, the SSM might not initialize. To recover the SSM, follow these steps: Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Log into the switch through the console port, an SSH session, or a Telnet session. Display the values assigned to the SSI image boot variable for each module and note the values for later reference. switch# show boot module Module 2 ssi variable = modflash://2-1/m9000-ek9-ssi-mz.2.1.2.bin Module 4 ssi variable = modflash://4-1/m9000-ek9-ssi-mz.2.1.2.bin Clear the values assigned to the SSI image boot variable. switch# config t switch(config)# no boot ssi Reload the SSM to initialize in Fibre Channel switching mode. switch# reload module 4 reloading module 4 ... After the SSM initialize, follow the procedure described in the "Upgrading the SSI Boot Image on an SSM" section on page 11-19. Reassign the SSI boot variables cleared in Step 3, switch# config t 11-28 Cisco MDS 9000 Family CLI Configuration Guide OL-16184-01, Cisco MDS SAN-OS Release 3.x