STACK-T1 vs STACK-T2 vs STACK-T3

[ปลาวาฬทราย RMUTT CPE IX]

What are the differences? What should I use for stacking Cisco 3850?

Thank you very much.

[balaji.bandi]

difference is length major.

STACK-T1

 

STACK-T2

 

STACK-T3

here is you find information :

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/hardware/installation/guide/b_c3850_hig/b_c3850_hig_appendix_01000.html

[ปลาวาฬทราย RMUTT CPE IX]

What about same length? STACK-T1-1M vs STACK-T2-1M

Thank you very much.

[balaji.bandi · Accepted solution]

Each model have different connection port - with different Length, you need order based on the model and switch you ordering (which can be used for stacking right cable)

STACK-T1 - is used for 3850 ( same can be used in C9300(not L)

STACK -T3 for Cat 9300L

STACk - T2 used old 3K switches.

Hope this information help you.

[paul driver]

Hello

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@ปลาวาฬทราย RMUTT CPE IX wrote:

What should I use for stacking Cisco 3850?

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You use the most applicable to your physical environment within the comms racks, if the stack switchs are spearated via multiple cable mgt then use the longer stack cabling, if they are close together use the shorter and they can be mixed you dont have to all the same size to complete a stack ring

[mgurbski_netprof]

hi,

from Data Sheet:

StackWise-480 and StackPower cables for the Cisco Catalyst 3850 Series
STACK-T1-50CM=	Cisco StackWise-480 50cm stacking cable spare
STACK-T1-1M=	Cisco StackWise-480 1m stacking cable spare
STACK-T1-3M=	Cisco StackWise-480 3m stacking cable spare
CAB-SPWR-30CM=	Cisco Catalyst 3850 StackPower cable 30cm spare
CAB-SPWR-150CM=	Cisco Catalyst 3850 StackPower cable 150cm spare

https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-3850-series-switches/datasheet_c78-720918.html#OrderingInformation

kind regards,

Michał

[ibrunello]

If you happen to have only short cables, the "braided" mode is the way to go.
this basically makes you connect a cable every 2 switches, missing the adjacent.
on tightly stacked switches a 50 cm lenght will suffice for all your needs.

that is:
1) even stacks connect to even stacks
2) odd stacks connect to odd stacks
3) top and bottom connect to the closer one as well
this remove the need of a long cable to connect top stack member to botton one, as usually depicted in configuration guide.

e.g. on 8 member stacks
switch 1 connect to switch 2 (rule #3) and stack 3 (rule #2)
switch 2 connect to switch 1 (rule #3) and stack 4 (rule #1)
switch 3 connect to switch 1 and 5 (rule #2)
switch 4 connect to switch 2 and 6 (rule #1)

switch 5 connect to switch 3 and 7 (rule #2)

switch 6 connect to switch 4 and 8 (rule #1)

switch 7 connect to switch 5 (rule #2) and switch 8 (rule #3)
switch 8 connect to switch 6 (rule #1) and switch 7 (rule #3)

see https://community.cisco.com/t5/networking-blogs/connecting-stack-cables-a-better-way/ba-p/4109155 for more visual examples.