Upgrading VSX from 10.01 to 10.03

There are two procedures for upgrading to the latest version of VSX; each procedure is useful for different network environments.

Follow the upgrade procedure for your situation within a maintenance window because network availability cannot be guaranteed. Plan to have at least a two-hour maintenance window in case problems arise. Some of the preparation can be done before the upgrade to minimize the downtime.

Rolling upgrade for switches

To minimize the traffic downtime on a network, the rolling upgrade procedure involves upgrading each of the switches serially. This procedure takes longer overall but it ensures the least amount of downtime for the traffic on the network. The rolling upgrade procedure is useful for network environments that require live traffic running during their maintenance window.

The process first involves the upgrade of one switch. Second, a subsequent transition of the traffic is moved over to that upgraded switch. Third, the remaining switch is upgraded.

Upgrading both switches at the same time

The procedure for upgrading both switches at the same time is useful when you want the shortest amount of overall time to upgrade. This procedure is also useful when you can afford to have both switches offline because the procedure uploads the software on both switches and boots them with the new software at the same time. This procedure lets both switches boot in parallel, which saves time.