Cabling StackPower

[ealtun]

Hi,

I have 6 switchs 3850 and i want used  Stackwise and Stackpower.

For Stackwise, it's no problem but for stackpower i want like :

For the 6 Switch 3850 connected in Stackwise, i would like to connect Stackpower with too topology 1-2-3-4 and 5-6.

I dont want to use XPS-2200.

It's possible as topology ?

Thank you.  

[Mark Malone]

There's limitation depending on the way its setup

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/hardware/installation/guide/b_c3850_hig/b_c3850_hig_chapter_010.html#concept_BACF415ABB244A479BB6C803B181560F

StackPower Stacking Guidelines

You can configure a StackPower stack for either power sharing or redundancy. In power-sharing mode, the power of all the power supplies in the stack is aggregated and distributed among the stack members.

In redundant mode, when the total power budget of the stack is calculated, the wattage of the largest power supply is not included. That power is held in reserve and used to maintain power to switches and attached devices when one power supply fails. Following the failure of a power supply, the StackPower mode becomes power sharing.

Note	Power-sharing mode is the recommended configuration for Catalyst 3850 switches.

For general concepts and management procedures for switch power stacks, see the software stacking configuration guide on Cisco.com.

Before connecting the switches in a power stack, keep in mind these guidelines:

• A switch power stack can include a maximum of four switches in a ring topology and nine switches in a star topology.
• Size of the switch and any optional power supply module. The 1100-W power-supply module is 1.5 inches (3.81 cm) longer than the other modules, and with the attached cable retention clip, it extends 3 inches (7.62 cm) from the switch chassis. Stacking switches with the same power-supply modules together makes it easier to cable the switches. For switch dimensions, see Appendix A, “Technical Specifications.”
• Length of cable. Depending on the configurations that you have, you might need different-sized cables. If you do not specify the length of the StackPower cable, the 0.3 meter cable is supplied. If you need the 1.5 meter cable, you can order it from your Cisco supplier. For cable part numbers, see StackPower Connector. The StackPower Cabling Configurations provides examples of recommended configurations.
• For rack-mounted switch stacks that are members of a data stack and a StackPower stack, see Switch Stacking and Power Stacking Guidelines.