[c-nsp] power down of standby sup is not possible

[Seth Mattinen]

Tassos Chatzithomaoglou wrote:
> 
> 
> Seth Mattinen wrote on 11/03/2009 00:50:
>> Tassos Chatzithomaoglou wrote:
>>> Anyone care to explain why such a limitation?
>>>
>>> 7609(config)#no power enable module 5
>>> %Error: no power control on supervisor cards
>>>
>>> 7609#sh mod
>>> Mod Ports Card Type                              Model            
>>> Serial No.
>>> --- ----- -------------------------------------- ------------------
>>> -----------
>>>   5    2  Supervisor Engine 720 (Hot)            WS-SUP720-3BXL
>>>   6    2  Supervisor Engine 720 (Active)         WS-SUP720-3BXL
>>>
>>>
>>> I'm trying to power down the standby sup and i though cisco's green
>>> agenda would have though of that.
>>>
>>>
>>
>> It's not a "green" thing, but a "redundant" thing. A second supervisor
>> is for redundancy, and if it's off and unconfigured, you might as well
>> just store it on a shelf and swap it in when needed because you won't be
>> able to power it up anyway if the active sup fails. They're doing more
>> than just synchronizing config changes when in standby mode.
>>
>> ~Seth
> 
> Seth,
> 
> There are remote locations (with more than one box installed) that i
> don't have a shelf and i prefer to have one sup "online" (but not as
> standby) serving all boxes. That way i can watch it through my inventory
> management system. In case of an emergency, someone staying nearby can
> go there and just plug it in, replacing the active sup in any box.
> 


Basically your storage space is a supervisor slot. Someone from Cisco
should know if this is just a config thing or actually in the hardware
design.

~Seth