Which Action Must Be Performed Before Renumbering a Cisco UCS Chassis?

C.

Before renumbering a Cisco UCS chassis, it is important to take certain precautions to ensure that the process is successful and does not cause any disruption to the data center infrastructure.

Option A: Running the shut and no shut command on the connected ports is not a necessary step before renumbering a Cisco UCS chassis. These commands are typically used to reset a port or bring it back up after it has been administratively shut down.

Option B: Moving the chassis to new ports on the fabric interconnect is not necessary for renumbering a chassis, and it could cause additional issues if not done correctly. This action could potentially cause port-channeling and IP address issues if not configured properly.

Option C: Decommissioning the chassis is not necessary for renumbering a Cisco UCS chassis. This would involve removing the chassis from the data center and could cause additional downtime and configuration changes.

Option D: Re-acknowledging the chassis is the correct action that must be performed before renumbering a Cisco UCS chassis. Re-acknowledging a chassis ensures that the new chassis number is recognized by the Cisco UCS Manager and all associated policies and configurations are updated accordingly.

To re-acknowledge a chassis, follow these steps:

1. Log in to the Cisco UCS Manager.
2. Navigate to the Equipment tab and select the appropriate chassis.
3. Right-click the chassis and select the Re-Acknowledge Chassis option.
4. Follow the prompts to enter the new chassis number and update any associated policies or configurations.
5. Verify that the new chassis number is recognized by the Cisco UCS Manager and that all associated policies and configurations have been updated.

By re-acknowledging the chassis, you ensure that the new chassis number is recognized by the Cisco UCS Manager and that all associated policies and configurations are updated accordingly. This will help to prevent any potential configuration issues or downtime that could be caused by renumbering a chassis without proper preparation.