Mix of different crossbar fabric switching modules (Crossbar Fabric-1 Switching Module and Crossbar
Fabric-3 Switching Module) outside a maintenance window, is not supported. This mix of modules is supported
only while you are migrating from Crossbar Fabric-1 Switching Modules to Crossbar Fabric-3 Switching
Modules. After a reboot of the switch, if there is a mix of Crossbar Fabric-1 Switching Modules and Crossbar
Fabric-3 Switching Modules, only the Crossbar Fabric-3 Switching Modules will be powered on.
Warning
Performing a Nondisruptive Migration from Crossbar Fabric-1 Switching
Modules to Crossbar Fabric-3 Switching Modules
To migrate a Crossbar Fabric-1 Switching Modules to Crossbar Fabric-3 Switching Modules, follow these
steps:
Before you begin
The migration process should be performed during schedule maintenance period only.
Backward migration procedure (migrating from Cisco MDS 9000 Crossbar Fabric-3 Switching Module to
Crossbar Fabric-1 Switching Module) will be disruptive.
Note
Perform the Crossbar Fabric-1 Switching Module to Crossbar Fabric-3 Switching Module migration after the
Supervisor-1/Supervisor-1E to Supervisor-4 Module migration is completed. A mix mode of Crossbar Fabric-1
Switching Modules with Supervisor-4 Modules and Crossbar Fabric-3 Switching Modules with
Supervisor-1/Supervisor-1E Modules is not supported.
Note
Once the crossbar fabric switching modules migration process is initiated, wait for the migration process to
complete, do not abort the process midway.
Note
Cisco MDS 9700 Series Switches Hardware Installation Guide
164
Installing, Removing, and Verifying Field Replaceable Units
Performing a Nondisruptive Migration from Crossbar Fabric-1 Switching Modules to Crossbar Fabric-3 Switching Modules
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