topic Problem with stack between X250 - X440 in ExtremeSwitching (Other)

Problem with stack between X250 - X440

Leonardo_Falcon — Thu, 29 Dec 2016 19:07:00 GMT

Hello people,
I have two switches in stack.
The switches are X250e-24t and X440-48p.
The version is 15.3.2.11.
This stack has two ports in trunk configured in sharing to the switch core.
The spanning tree is not configured in this network.
One week ago I had a problem because there were a l2 loop.
I think it was a stack problem, causing the misconfiguration of the two ports in sharing and lease two trunk actived.
What do you think?
Are there problems if I do a stack with two platform different?
If I upgrade the version, Can I resolve this problem?
Thank you.

RE: Problem with stack between X250 - X440

Karthik_Mohando — Thu, 29 Dec 2016 19:40:00 GMT

Leonardo, If upgrade is an easy option then i would suggest an upgrade to recommended version of EXOS. Being said this, multiple factors can bring dual master in a stack and if the last one happened due to a code issue then upgrade might fix but not 100% since X250e is the older version of hardware the recommendation is EXOS 15.3.5.2-patch1-10. Here is a link for reference http://www.extremenetworks.com/extreme-hardwaresoftware-compatibility-recommendation-matrices/software-release-recommendations/ If the same issue happens after upgrade then i would suggest to open up a GTAC case to analyze this further.

RE: Problem with stack between X250 - X440

Vellachery__Sum — Thu, 29 Dec 2016 22:42:00 GMT

Leonardo,

Adding to my colleagues suggestion (Karthik). Also, look for the stacking port Rx errors & Tx errors are getting incremented:-

show ports stack-ports rxerrors no-refresh
show ports stack-ports txerrors no-refresh

In case, if the Rx errors are getting incremented. Check stacking cables for good connections, firmly connected with the screws tightened.
If you have a spare stacking cable. Try swapping them with the spare one and monitor the stacking ports Rxerrors

RE: Problem with stack between X250 - X440

Ronald_Dvorak — Thu, 29 Dec 2016 22:51:00 GMT

could you share the output of "show stacking"

RE: Problem with stack between X250 - X440

Drew_C — Wed, 11 Jan 2017 01:37:00 GMT

Hi Leonardo,
Were you able to resolve this issue, or do you still need assistance?

RE: Problem with stack between X250 - X440

Leonardo_Falcon — Wed, 11 Jan 2017 17:29:00 GMT

Hi Drew,
I have upgraded the version and until now the problem is not appeared.
Thank you.