How does software updates/upgrades work in Cisco SD-WAN using vManage, and what considerations should you plan?

• A. Upgrades staged via templates; vManage distributes firmware images; ensure compatibility, plan maintenance windows, backup configurations, and test in staging
• B. Upgrades manual per device
• C. Upgrades automatic without planning
• D. Upgrades only on new devices

Answer: (A)

Software updates in Cisco SD-WAN are managed centrally through vManage using upgrade templates, enabling a controlled, staged rollout of a new image rather than updating each device individually. You upload the new software image to vManage (or its image repository) and create an upgrade template that specifies which image to install, which devices to target, and the scheduling details, including reboot windows.

The real strength here is the staged, phased approach. You start with a small group of devices in a staging phase to validate the upgrade in a live environment, then progressively roll out to the rest. During the upgrade window, vManage distributes the firmware image to the devices and the devices reload to the new version, ideally with minimal downtime thanks to the phased plan.

Important considerations include ensuring compatibility with the hardware and feature set (checking the vendor's compatibility matrix, memory, and license requirements), planning maintenance windows to minimize impact, and backing up device configurations before starting. It’s also crucial to test the upgrade in a staging environment to catch issues early and have a rollback plan to revert to the previous image if problems arise. After the upgrade, verify the new version, monitor device health, and confirm that all devices are operating as expected.

These factors together explain why using templates and staged rollout managed by vManage is the best approach. Manual upgrades per device, automatic upgrades without planning, or upgrades limited to new devices do not reflect how the SD-WAN platform is designed to operate and manage risk during software changes.