Number of stack cables for two 3650

[hoschi]

Dear community

Have a simple question about stacking of two cisco 3650 devices.

How many stacking cables are needed in that case? Just one, or are two needed in total (crossed connection).

The manual or other picture show mostly 3 devices in a stack, like here.

Maybe someone can answer my question. :)

thx, hoschi

[Julio E. Moisa · Accepted solution]

Hi,

You need 2 in order to close the circuit and for redundancy. 

Just for reference: https://www.cisco.com/c/en/us/support/docs/switches/catalyst-3750-series-switches/71925-cat3750-create-switch-stks.html

:-)

[hoschi]

May thx for the quick answer :)

[Julio E. Moisa]

It was a pleasure, have a great day.

:-)

[Joseph W. Doherty]

As Julio has noted, you need two for redundancy . Stack will operate on just one, but then, of course, you have no redundancy. Two cables also increase bandwidth between the two stack members.

Usually short stack cables are crisscrossed, as shown, but you could also connect stack port 1 to stack port 1 and stack port 2 to stack port 2. Doing so should allow a bit more vertical separation of the stack members.