So Cisco StackPower is a way of distributing power across a stack of C3750X and C3850 switches. The idea is that instead of each switch having multiple redundant PSUs you just need a couple and should a single PSU fail in the stack, if the switch wouldn't have enough power to maintain full operation it can draw unused power from other switches in the stack which have excess power.
Pretty cool but one thing to be aware of is each switches power budget. So although the datasheet for each switch states the power consumption of a switch this is not the amount a switch requires for operation and this is the power budget. For example C3750X-24 switches state that the power consumption at 100% load is 93.5W. You would then assume that a 350W power supply would be able to power 3 of these switches. This is not the case. A C3750X-24 switch actually has a power budget requirement of 190W, meaning you cannot power 2 switches with a single 350W power supply.
Stack power switch power budgets and further information can be found at the below reference:
References and Resources:
Cisco Stack Power White Paper
http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps6406/white_paper_c11-578931.html
No comments:
Post a Comment