Power series cabling on Cisco 3750 switches

[m-abooali]

                   Hi,

I am connecting power cable (series power cables) on 3750 stacks. i have connected them the same way the stack cables are connected i.e. fo rexample on a stack with 3 3750s:

1- fitst slot on fist switch connected the second slot last switch in the stack.

2- second slot/ port on the first switch to the first on second and seoncd on teh second switch to first on the third switch.

this how they are alway been stacked.

Now, I need to connect power cables and I have followed the same method for stacks up to 4 switches. it seems that if a stack has more tham 4 switches, then the cabling will be dofferent!?

I was wondering if you guys can please help me on the cabling scheme for stacks more than 4 siwtches.

Also, do I need any configurations? or just like the stack, the switches will sense them?

Regards,

Masood

[Reza Sharifi]

Hi Masood,

For power stacking the maximum number of switches is 4.

From the installation guide:

A switch power stack can include a maximum of four switches in a ring topology

Also a couple of links to follow:

http://www.cisco.com/en/US/docs/switches/lan/catalyst3750x_3560x/hardware/installation/guide/HIGINSTL.html#wp1348071

http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps6406/white_paper_c11-578931.html

HTH

[m-abooali]

Thanks.

I see but i have also heared that through some different cabling scheme we can cable more than 4 switches in a given stack!?

this is what I am looking for because I have an satack of 5 x 3750s.

thanks,

Masood

[Ivan Shirshin]

Hi Masood,

I fyou want to use a StackPower for more than 4 switches you need to use XPS2200 in star topology:

http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps10745/qa_c67-636006.html

Here are the cabling configurations:

http://www.cisco.com/en/US/docs/switches/lan/catalyst3750x_3560x/hardware/installation/guide/HIGINSTL.html#wp1348161

Kind Regards,

Ivan Shirshin

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