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6500 power modes

Jon Marshall
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It's been a while since I had to do this and I have obviously forgotten most of it but I am having trouble understanding the below output - 



DCP-6509A-DC1-CO#sh power
system power redundancy mode = redundant
system power total = 3795.12 Watts (90.36 Amps @ 42V)
system power used = 1307.88 Watts (31.14 Amps @ 42V)
system power available = 2487.24 Watts (59.22 Amps @ 42V)
Power-Capacity PS-Fan Output Oper
PS Type Watts A @42V Status Status State
---- ------------------ ------- ------ ------ ------ -----
1 WS-CAC-3000W 2771.16 65.98 OK OK on
2 WS-CAC-4000W-INT 3795.12 90.36 OK OK on
Note: PS2 capacity is limited to 2940.00 Watts (70.00 Amps @ 42V)
when PS1 is not present
Pwr-Requested Pwr-Allocated Admin Oper
Slot Card-Type Watts A @42V Watts A @42V State State
---- ------------------ ------- ------ ------- ------ ----- -----
2 WS-X6748-GE-TX 325.50 7.75 325.50 7.75 on on
3 WS-X6748-GE-TX 325.50 7.75 325.50 7.75 on on
5 WS-SUP720-3BXL 328.44 7.82 328.44 7.82 on on
6 (Redundant Sup) - - 328.44 7.82 - -
system auxiliary power mode = off
system auxiliary power redundancy operationally = non-redundant
system primary connector power limit = 3780.00 Watts (90.00 Amps @ 42V)
system auxiliary connector power limit = 0 Watt
system primary power used = 1307.88 Watts (31.14 Amps @ 42V)
system auxiliary power used = 0 Watt


so the system says it has 2 PSUs and both are operational and it is running in redundant mode.


Two things are confusing me -


1) this line - "system auxiliary power mode = off".  I did a quick search and an answer was that it was because there was only one PSU in the chassis but this is clearly not the case from the above (and from a visual check) so what exactly does it mean ?


2) the docs say that to run in redundant mode each power supply must be the same wattage but the above PSUs aren't and yet it is saying it is running in redundant mode.


Can someone help clarify. 



16 Replies 16


I agree very unusual but I know the power supply I inserted works as it was powering up a test chassis we have. 


I thought it might be because of the power mode and/or because it is a 3000W power supply and the other power supply is 2500W but like I say the docs still say it should come online so not sure what is happening. 


Obviously I want to make sure it is the chassis before having to swap that out as this is a core switch and would incur some downtime. 


Nothing in the logs other than the OIR messages about removal and insertion of new power supplies.



Nothing in the logs would mean (for me), the chassis is not detecting the PS.
RMA-ing a chassis isn't nice, Jon. But looks like it's a chassis fault.
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