1. The far end will switch. The PSM provides only bidirectional non-revertive switching. The switch will occur within seconds of you applying the state change. The far end switch will occur within milliseconds. The entire event is supposed to occur within 50 ms. A user-applied switch is more elegant and less disruptive than one caused by a line outage.
2. If the connected devices interfaces can tolerate a 50 ms event without dropping, then no interface outage would be observed. In practice though, I've observed that it's not uncommon for router interfaces to drop and restore from the impact, a cycle lasting from 4 to 10 seconds. I would inform the customer that their device interfaces may bounce.
Remember that you will need to clear the manual switch state (CLEAR button, then APPLY) after the switch occurs. Otherwise, the card will remain in a manual switch to working state.
Aside: why is the card in standalone mode? Just to avoid the internal patch cords?
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...