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Switch in stack keeps resetting

  • 1.  Switch in stack keeps resetting

    Posted 10-09-2017 10:32
    I have a stack with 5 x450e-48p switches. Back in January I replaced slot 3 due to it failing and all was good after that. A couple weeks ago slot 3 failed again so I replaced the switch and all was good until this past Friday when it started randomly resetting itself. I don't want to replace the switch again as I don't know if that is the issue. Could a bad stacking cable or module cause this? It is running on an older firmware of 12.4.1.7, could that be causing it?


  • 2.  RE: Switch in stack keeps resetting

    Posted 10-09-2017 10:41
    Are there any logs from slot 3 which indicate why the node has failed? Are you seeing any CRC errors or link flaps on your stack ports?

    The version you are running could certainly use an upgrade, the latest recommended release for an X450e is 15.5.3.2-patch1-14.

    If you have access to this EXOS release, I would certainly recommend upgrading this stack as per the directions in this KB article:

    https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-upgrade-EXOS-on-a-Summit-Stack



  • 3.  RE: Switch in stack keeps resetting

    Posted 10-09-2017 10:50
    10/09/2017 04:33:37.21


  • 4.  RE: Switch in stack keeps resetting

    Posted 10-10-2017 10:46
    I was able to reboot the slot last night and the node became operational. I did notice that the time is off by about 4 hours. Isn't the time synced from the master node? How do I get it to show the correct time? All the other nodes are correct.


  • 5.  RE: Switch in stack keeps resetting

    Posted 10-13-2017 14:13
    I have upgraded the XOS to the version stated above but slot 3 keeps failing and resetting. It states it lost communication with the master node. Could this be a stacking cable issue or stacking port issue?

    Here is a screenshot of the stacking-port utilization. It clearly shows very little traffic on ports 3:2 & 4:1

    Link Utilization Averages Fri Oct 13 12:12:03 2017
    Port Link Rx Peak Rx Tx Peak Tx
    State pkts/sec pkts/sec pkts/sec pkts/sec
    ================================================================================
    1:1 A 395 395 5541 5541
    1:2 A 815 1055 5591 5880
    2:1 A 5293 6674 685 1132
    2:2 A 311 460 5051 5985
    3:1 A 5206 5974 379 379
    3:2 A 1 4 21 28
    4:1 A 21 77 1 43
    4:2 A 5028 5267 113 240
    5:1 A 113 240 5014 5267
    5:2 A 5313 5452 337 390


  • 6.  RE: Switch in stack keeps resetting

    Posted 10-13-2017 14:13
    Hi DH,
    It might be best for you to open a case with GTAC so the team can dig a little deeper to see what might be happening to your stack.


  • 7.  RE: Switch in stack keeps resetting

    Posted 01-29-2018 17:21
    Solved via GTAC case.


  • 8.  RE: Switch in stack keeps resetting

    Posted 02-22-2018 18:52
    how was the problem solved?