IBM SAN192C-6 Installation, Service And User Manual page 146

5. Wait till the first replaced crossbar fabric switching module is up, follow the same procedure for all the
remaining crossbar fabric switching modules. Ensure that the temperature of the chassis is normal,
after each crossbar fabric module replacement. Use the show environment temperature command to
view the current temperature. Perform this task sequentially for all the modules (1,2, 3, 4, 5 and 6).
Perform Step 1 to Step 4 for the other modules. The latest inserted crossbar fabric switching modules
will come up.
Note : If a Crossbar Fabric-3 Switching Module migration fails, we recommend that you continue the
migration process with the remaining other Crossbar Fabric-3 Switching Modules. Ensure to replace
the faulty Crossbar Fabric-3 Switching Module immediately with a new one to achieve full line rate
bandwidth.
Verification
Use the show module xbar command to verify the module type and module status.
switch# show module xbar
Xbar Ports
------ -------
1 0
2 0
3 0
4 0
5 0
6 0
Xbar Sw
------ --------
1
2
3
4
5
6
Xbar
------ --------------------------------
1
2
3
4
5
6
To view the inventory information for modules from the DCNM Web UI, Choose Inventory > View >
Modules. The Modules window is displayed with a list of all the switches and its details for a selected
scope.
For more information, see the DCNM SAN Management Configuration Guide.
Recovery procedure
This section describes the steps needed to downgrade from Crossbar Fabric-3 Switching Modules to
Crossbar Fabric-1 Switching Modules if there are issues with the Crossbar Fabric-3 Switching Modules
upgrade.
Scenario 1
If a chassis is running in a mixed mode (both Crossbar Fabric-1 Switching Modules and Crossbar Fabric-3
Switching Modules in OK state), then reverse the installation process and replace the Crossbar Fabric-3
Switching Modules one-by-one with Crossbar Fabric-1 Switching Modules. As long as at least one
Crossbar Fabric-1 Switching Module is online, replacing Crossbar Fabric-3 Switching Modules with
Crossbar Fabric-1 Switching Modules can be done nondisruptively. Do not remove any further Crossbar
Fabric-1 Switching Modules. If all the Crossbar Fabric-1 Switching Modules are removed or are in
powered down state, then the downgrade will be disruptive.
120 IBM Storage Networking SAN192C-6, SAN384C-6 and SAN768C-6: SAN192C-6, SAN384C-6 and
SAN768C-6 Installation, Service, and User Guide
Module-Type
----------------------
Fabric Module 3
Fabric Module 3
Fabric Module 3
Fabric Module 3
Fabric Module 3
Fabric Module 3
Hw
--------
NA 1.0
NA 1.0
NA 1.0
NA 1.0
NA 1.0
NA 1.0
MAC-Address(es)
NA
NA
NA
NA
NA
NA
Model
------------------
DS-X9710-FAB3
DS-X9710-FAB3
DS-X9710-FAB3
DS-X9710-FAB3
DS-X9710-FAB3
DS-X9710-FAB3
Serial-Num
----------------
JAE1710088N
JAE2217096Y
JAE222305V1
JAE222305VE
JAE222305V9
JAE222305V8
Status
----------
ok
ok
ok
ok
ok
ok