Traffic loss is expected when upgrading a single leaf which is not in an MCT pair. Since there are no alternate paths for the single leaf, maintenance mode will not be enabled. Only the configuration will be persisted, and a firmware upgrade will be carried out. A traffic loss warning will be flagged when upgrading a single non-MCT leaf.
Traffic loss is also expected for any singled-homed server. Detecting single-homed servers are not in the scope of this feature so a generic warning will be provided at the start of a firmware download.
This is not a typical deployment, but traffic loss is expected in this scenario. Since no alternate paths exist for non-redundant switches, maintenance mode will not be enabled for this case. A traffic loss warning will be flagged when upgrading non-redundant switches.
