2960X fails to get stacked

[caromay02]

Hi there and thanks in advance for reading and helping.

This last month I had installed 28 cisco 2860X so far, stacking them in several ways (3, 5, 6).

Now I have to stack the last 2.

I am on my second week without getting them to work.

They do not stack, I mean, they never "create" the stack.

The failure is as follows

I started the two switches chained with their stack cables.

After several minutes ONE of them gets normal state (SYST-STAT-MAST lights on, green)

The other ALWAYS get SYST and RPS lights on, green and the stack NEVER stops their internal fans, it is like they are always trying to reach normal state.

What I did so far:

Change Flex stack cables.

Changed switches position (the one UP goes down and the bottom one goes to the TOP) . This shown me that the swicth that gets SYST and RPSlights on is always the same

Reset them to factory default via console

If you connect the switches alone, WITOUT stack, they work perfectly.

Any idea?

Thanks in advance

Well, this was what happened.

I had restored sw to factory default, updated firmware, assigned priorities and IDs, BUT when it comes to boot, one of the sw booted from ANOTHER firmware version (15.2xE instead of 15.2aE) so I had to force manually via CLI to boot from the right version

here the line

conf t

boot system Flash:IOSname.bin

CTRL + Z

WR

And it worked!!

Thanks

[paul driver · Accepted solution]

Hello
I guess the obvious question would be:

• Is the Ios and feature sets the same
• Have you provisioned, prioritized renumbered them
• Can you swap the stack cabling

If not please do so and then start one switch first , with the other still powered down, and once that is up , connect the stack cable between both switches and start up the second.

Once they are both up check to see activity on the stack ring ports
sh version | begin Switch x
sh switch
sh switch  stack-ring speed
sh switch stack-ports
sh controllers ethernet-controller stack port x

res
Paul

[caromay02]

Hi Paul and thanks

Yes, I've provisioned, prioritized renumbered them.

Same firmware.

Just checking stack rings, I'll copy them in a while

Thanks