Stacking License Upgrade Process Improvement

All master-capable switches in a stack must run the same license level. Previously, if you applied a license upgrade to a master-capable node, it went immediately into the failed state due to a license mismatch.

If you apply a license upgrade to a node that creates a license mismatch, this feature generates warning log and console messages every five minutes alerting you of the license mismatch, rather that putting the node into the failed state. This gives you time to resolve the license mismatch without affecting service. Keep in mind that if a failover were to occur while there is a license mismatch, some features may be disabled due to licensing restrictions which could cause service disruption. After all master-capable node licenses match the primary node's licenses, the log and console messages stop, and a stack failover functions as expected.