2 C9200L-24T-4X-E how to stack

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i have 2 switch of C9200L-24T-4X-E, want to make stack:

1. how to configurate it? want all command;
2.which ports are stack ports? if i need to buy extra module? i already have 2 stack cables with 4 connector, can it insert into front optic 10G ports?

[Torbjørn]

You should connect the switches with a StackWise cable and power them on. If you power on one before the other it will become the primary switch. Once both have been powered on you should configure one of the switches as the primary switch using "switch {switch number} priority {priority}" where higher priority is better. You can identify which switch has which chassis number with "show switch summary".  You might also want to renumber the switches to make the numbering make sense with the physical layout of the stack. You can do this with "switch {current-stack-member-number} renumber {new-stack-member-number}"

You can find more about this here: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9200/software/release/17-10/configuration_guide/ha/b_1710_stck_mgr_ha_9200_cg.pdf

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is this my cables like photos and installation correct?

[Torbjørn · Accepted solution]

No. Those are 10G DAC cables. You will need  a stack kit(c9200l-stack-kit) containing stackwise cables that connect to the back of the switches. The kit looks like this:

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thank you very much, i also doubt this not that cables.