question in calcualting power dissipation with 2 power supplies in cisco 7604 series router

[Dr.X]

hi all ,

i need to know and get deep understand about wts power dissipation in router 7600.

here is my condfig :

Gateway7600#sh power 
system power redundancy mode = redundant
system power total =     2669.10 Watts (63.55 Amps @ 42V)
system power used =       367.50 Watts ( 8.75 Amps @ 42V)
system power available = 2301.60 Watts (54.80 Amps @ 42V)
                        Power-Capacity PS-Fan Output Oper
PS   Type               Watts   A @42V Status Status State
---- ------------------ ------- ------ ------ ------ -----
1    PWR-2700-AC/4      2669.10 63.55  OK     OK     on 
2    PWR-2700-AC/4      2669.10 63.55  OK     OK     on 
                        Pwr-Allocated  Oper
Fan  Type               Watts   A @42V State
---- ------------------ ------- ------ -----
1    FAN-MOD-4HS          57.54  1.37  OK
                        Pwr-Requested  Pwr-Allocated  Admin Oper
Slot Card-Type          Watts   A @42V Watts   A @42V State State
---- ------------------ ------- ------ ------- ------ ----- -----
1    WS-SUP32-GE-3B      154.98  3.69   154.98  3.69  on    on
2    (Redundant Sup)       -     -      154.98  3.69  -     -

-----------------------------------------

i see that  total is 8.75 A from the router ... but i want to ask , how about the 8.75 ??

is it from 1 power supply ? or from the two power supplies ?

any clarification about the 8.75 A ???

regards

[Akash Agrawal]

Hi Ahmed,

If you see below output, we have two power supply and each is supplying 63.55 Amp.

PS   Type               Watts   A @42V Status Status State
---- ------------------ ------- ------ ------ ------ -----
1    PWR-2700-AC/4      2669.10 63.55  OK     OK     on 
2    PWR-2700-AC/4      2669.10 63.55  OK     OK     on  

Out of which 8.75 Amps is used and 54.80 Amps is available which is giving details for one power supply only. And we have 1:1 power redundancy so all components on router can consume power maximum from one power supply only so in case one fails other should be able to suffice all power needs

system power total =     2669.10 Watts (63.55 Amps @ 42V)
system power used =       367.50 Watts ( 8.75 Amps @ 42V)
system power available = 2301.60 Watts (54.80 Amps @ 42V)

How router calculated 8.75 Amps total consumption :

It is sum of power consumed by primary sup, secondary sup and FAN = 3.69 + 3.69 + 1.37 = 8.75

Fan  Type                         Watts   A @42V State
---- ------------------ ------- ------ -----
1    FAN-MOD-4HS          57.54  1.37  OK

                                  Pwr-Requested        Pwr-Allocated  Admin Oper
Slot Card-Type          Watts   A @42V      Watts   A @42V State State
---- ------------------ ------- ------ ------- ------ ----- -----
1    WS-SUP32-GE-3B      154.98  3.69   154.98  3.69  on    on
2    (Redundant Sup)                  -     -      154.98  3.69  -     -

Pls dont forget to rate helpful posts

Regards,

Akash