Cisco 3850 stack setup

[karthikeyan gopinathan]

hi 

need help in setting up stack config for 3850. i have 2 switches of the same model one should be the master and other should be the member. i have a stack cable and i have another cable not sure what it is for  you can see the in the picture i have attached. i connected both cables to the appropriate port in the back of the switch. but on console i don't see the stack port is on. i definitely missing something here. so please help.

[Reza Sharifi · Accepted solution]

Hi,

The other cable is the stacking cable for power.  You can power up switches by daisy chaining them together (see figure-7 in this link).

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

As for data stacking make sure you are cross connecting them together.  (see the same link).

If you want one switch to be the master, give it a higher priority.  1 is the worst and 15 is the best. So give it 15.

see link:

http://www.cisco.com/en/US/docs/switches/lan/catalyst3850/software/release/3.2_0_se/multibook/configuration_guide/b_consolidated_config_guide_3850_chapter_01100101.html#con_1153255

HTh

[jbowman1985 · Accepted solution]

Reza is correct.  Bottom cable is your data stacking cable.  Out of the box the 3850's will stack automatically.  The stack master will be elected unless you give one a higher priority like Reza mentioned.  The show switch command will give you details about the stack.  

I just setup 2 switch stacks of 3850's last week.  Here is what I did.  Powered on the switch I wanted to be the stack master.  Then configured stack priority with the following:

Switch# switch 1 priority 15

Then connect the stacking cables to the two switches and power on the second unit.  After about 8 minutes when it finally boots up you should see it join the stack!

John

[karthikeyan gopinathan]

thank you i will try and let you know.