Backward Compatibility For Generation 1 Modules In Cisco Mds 9513 Directors - Cisco AP775A - Nexus Converged Network Switch 5010 Configuration Manual

About Crossbar Management
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
Caution
To perform a graceful shutdown of integrated crossbars on the supervisor module in a Cisco MDS 9509
or 9506 Director using Device Manager, follow these steps:
Right-click the integrated crossbar switching module.
Step 1
You see the context menu for that module.
Select Out of Service to gracefully shut down the integrated crossbar switching module.
Step 2
Note
Caution

Backward Compatibility for Generation 1 Modules in Cisco MDS 9513 Directors

To provide backward compatibility for a Generation 1 module in a Cisco MDS 9513 chassis, the active
and backup Supervisor-2 modules are associated to a specific crossbar module. The Supervisor-2 module
in slot 7 is associated with crossbar module 1 and Supervisor-2 module in slot 8 is associated with
crossbar module 2. You must plan for the following operational considerations before removing crossbar
modules:
•
•
Supervisor-2 module switchovers do not occur when removing crossbar switch modules on a Cisco MDS
Note
9513 that only has Generation 2 modules installed.
Cisco MDS 9000 Family Fabric Manager Configuration Guide
18-10
Taking the crossbar out of service may cause a supervisor switchover.
To reactivate the integrated crossbar module, you must remove and reinsert or replace the
crossbar module.
Taking the crossbar out of service may cause a supervisor switchover.
Whenever a crossbar module associated with the active Supervisor-2 module goes offline or is
brought online in a system that is already online, a stateful supervisor switchover occurs. This
switchover does not disrupt traffic. Events that cause a crossbar module to go offline include the
following:
– Out-of-service requests
– Physical removal
Errors
–
Supervisor-2 module switchovers do not occur if the crossbar switching module associated with the
backup Supervisor-2 module goes offline.
Chapter 18 Managing System Hardware
OL-17256-03, Cisco MDS NX-OS Release 4.x