What is the best way to cable 2 - 3750 switches power stack cables

Hello EE,
We have 2 3750 units we are bringing up in a stack.
This is the first time I've seen the power stack cables so am I going to do switch 1 power 1 to power 2 on switch 2?
What is the best approach
operationsITAsked:
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aleghartCommented:
Sw1 Port1 > Sw2 Port1
Sw1 Port2 > Sw2 Port2

Sw1# stack-power switch 1 port 1 enable
Sw1# stack-power switch 1 port 2 enable
Sw1# stack-power switch 2 port 1 enable
Sw1# stack-power switch 2 port 2 enable
Sw1# stack-power switch 1 port 1 enable

Sw1# stack-power stack POWERSTACK-A
Sw1(config-stackpower)# mode redundant
Sw1(config-stackpower)# exit

Sw1# stack-power switch 1
Sw1(config-switch-stackpower)# stack POWERSTACK-A
Sw1(config-switch-stackpower)# exit


There are more options for priority and power shedding you can find here:
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aleghartCommented:
http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/release/12-2_53_se/configuration/guide/3750xscg/swstkpwr.html#wp1015591

Both cables are not required, but should provide tolerance to failure of cable, port, or an admin who disables a port or pulls a cable accidentally.

I think you can also connect ports 1>2 and 2>1 and it should behave the same.
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operationsITAuthor Commented:
Does going from Sw1 Port1 > Sw2 Port1 and Sw1 Port2 > Sw2 Port2
offer any benefits over going from ports 1>2 and 2>1?

It appears power-sharing is default what would be the benefit of changing to mode redundant?
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aleghartCommented:
No difference in the wiring.  Was just trying to avoid you plugging Sw1 into itself.

Sparing (redundant) will leave the largest PSU idling until there is a failure.

Sharing will be drawing power from all PSUs.

Theoretically, sparing should incur less wear on the reserve capacity that is in the system.

With two cyclists on a tandem bike, I'm sure the person who is resting will be happier if he does not have to pedal for three years.  :)

Honestly, I'd use sharing.  I was just copying from sample documentation made a few years ago.
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