ExtremeSwitching (Other)

Expand all | Collapse all

dual Master same time 3 different stacks

  • 1.  dual Master same time 3 different stacks

    Posted 09-13-2018 11:32
    *00:04:96:82:4d:0b 1 Active Master CA-

    00:04:96:82:4c:fd 2 Active Master CA-

    00:04:96:7e:29:97 7 Active Standby CA-

    00:04:96:7e:29:91 8 Active Standby CA-

    00:04:96:97:77:35 3 Active Backup CA-

    00:04:96:97:77:3c 4 Active Standby CA-

    00:04:96:9c:44:cd 6 Active Standby CA-

    Same issue happend 3 different DC's with 3 diffrent stacks and in same time, i cant be cabling, power for any.
    Stacks running with ExtremeXOS version15.3.1.4


  • 2.  RE: dual Master same time 3 different stacks

    Posted 09-13-2018 11:34
    Running eaps or anything between stacks?


  • 3.  RE: dual Master same time 3 different stacks

    Posted 09-13-2018 12:06

    Hi Eric, Only possiblity L2 connected over DCI


  • 4.  RE: dual Master same time 3 different stacks

    Posted 09-13-2018 12:07

    but cant find any MAC in each other Stacks, other two stachs are isolated network


  • 5.  RE: dual Master same time 3 different stacks

    Posted 09-13-2018 13:03
    What is (was?) the uptime on those switches?


  • 6.  RE: dual Master same time 3 different stacks

    Posted 09-13-2018 13:18
    Around 4 year, we have power recycled after the issue, we dont have time stamps for all them,
    I have got for one stack i.e.
    Boot Time: Tue Jun 3 18:33:52 2014



  • 7.  RE: dual Master same time 3 different stacks

    Posted 09-13-2018 13:22

    Soory if you looking for system uptime.

    1, System UpTime: 1562 days 20 hours 37 minutes 21 seconds
    2. System UpTime: 1563 days 5 hours 56 minutes 36 seconds
    3. System UpTime: 1563 days 5 hours 56 minutes 36 seconds



  • 8.  RE: dual Master same time 3 different stacks

    Posted 09-13-2018 13:23

    3. System UpTime: 1563 days 5 hours 48 minutes 2 seconds


  • 9.  RE: dual Master same time 3 different stacks

    Posted 09-13-2018 13:24
    I believe you are hitting a known issue at around 1500 days of uptime, where the Master and Backup do not see each other and you have a dual Master happening. That has been fixed for a long time, but I assume not in your current release (upgrade to the latest). A reboot would solve that for another 4 years...


  • 10.  RE: dual Master same time 3 different stacks

    Posted 09-13-2018 13:33
    Thank you Stephane, is there any article, available so that will get business approvals for down time



  • 11.  RE: dual Master same time 3 different stacks

    Posted 09-13-2018 13:48
    We would need someone from GTAC that knows the bug number. I was able to find similar (old) feedback of a similar issue for other customers searching this community, but unfortunately I didn't see a tracking number (https://community.extremenetworks.com/extreme/topics/xos-12-6-1-3-stack-crashes-after-1555-days-upti...). 1555 days of uptime then the bug bringing dual Master state.



  • 12.  RE: dual Master same time 3 different stacks

    Posted 09-13-2018 15:23
    Please open a case with GTAC so they can continue to investigate this with Engineering.
    -Drew