CCIE Data Center (legacy) — Question 67

An administrator is replacing an IOM. The failed IOM is in chassis 1 and was connected to FI-B. The replacement IOM has an older version of software to the fabric interconnect. Which description is the correct process to bring the replacement IOM into the environment?

Answer options

• A. Decommission the chassis. Install the replacement IOM and connect all cables. Perform a firmware update of IOM, then activate with the matching code for the fabric interconnect. Recommission the chassis.
• B. Install the replacement IOM and connect a single cable. Perform a firmware update of IOM, then activate with the matching code for fabric interconnect. Reacknowledge the chassis.
• C. Downgrade the fabric interconnect to match the IOM version. Connect all cables and bring the IOM online. Upgrade the fabric interconnect and IOM to match the system.
• D. Install the replacement IOM and connect a single cable. Monitor the software auto-upgrade using the show fex detail command from Cisco NX-OS CLI. Connect the remaining cables when the upgrade is complete.
• E. Install replacement IOM and connect all cables. Monitor software auto-upgrade using the show fex detail command from Cisco NX-OS CLI. E

Correct answer:

Explanation

The correct answer is A because it involves decommissioning the chassis to ensure a safe installation of the new IOM and performing a firmware update to match the fabric interconnect. Options B and D do not ensure the proper firmware version is used before all cables are connected, while C suggests downgrading the fabric interconnect, which is not advisable due to potential compatibility issues.