Strange question regarding power provision. I have 4510R+E with 2 PWR-C45-6000ACV supplies with 4 identical feeds. The switch is configured for power redundancy mode. (We have many of these - all exhibit the same problem - identical hardware/IOS/config).
When one of the power feeds is disconnected, the whole PSU goes into error disable. I wasnt expecting this to be the case and we are drawing no where near any capacity.
Is this correct behaviour, bug or misconfig? Do we need to specify max psus (not that I was expecting to do so?)
When you insert power supplies in your switch, use power supplies that are of the same wattage. Multi-input power supplies such as 1400 W DC triple-input and 4200 W AC have additional restrictions. Read the sections on special considerations for these power supplies. If you mix power supplies, the switch will use the one it recognizes first and ignore the other power supply. The power supply status displays as err-disable and the summary displays as all zeros (0) for wattage values in the output for the show power command.
So I'm wondering what happens if we disconnect 1 or 2 feeds of the primary PSU - what will happen? Unfortunately it's a live switch, but it may have to be control tested to find the answer
That exactly what I was thinking. In theory nothing should happen since you are not drawing 3000w, but the reality is that this is a live network and you probably don't want to risk bringing down the entire switch to test the PSUs.
Done a controlled test on this now. By swapping to any 1 or combination of the 4 supplies the switch continues to work and adjusts accordingly without any visible problems. Didnt see any packet loss on a test I was running at the same time. (although the results would be very different if I was drawing over 3000w).
The err-disable and syslog messages are probably a bit misleading. Only when the 1 + 1 or 2 + 2 inputs are in and working does it remove the err-disable on the supply.
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...