ExtremeSwitching (Other)

  • 1.  Stack master flip

    Posted 07-12-2015 13:44
    The power dropped to my master and thus the two switches flipped roles. How do I flip them back without just power cycling the now master?


  • 2.  RE: Stack master flip

    Posted 07-12-2015 13:47
    Hi Mike,

    Assuming these are Summits, you can log into the stack and run the command 'run failover' to fail over mastership to the backup. However, this will cause the current master to reboot.

    -Brandon


  • 3.  RE: Stack master flip

    Posted 07-12-2015 13:48
    Sorry, yes, Summit x400s.


  • 4.  RE: Stack master flip

    Posted 07-12-2015 13:53
    I meant to include this in my initial post... and forgot:

    * Stk Master:36 # show stacking

    Stacking Data Base
    ==================

    Common Info
    Mode : Dup-No-Ring State : Up-Master Stacking : Enabled
    Master Slot: 2 Switches: 2 Local Slot: 2
    Config Slot: 1 Next Potential Master Slot : 1

    Previous Stack Master : 00:04:96:18:58:46
    Slot 1: State SLAVE
    Status : Enabled Master : No MAC : 00:04:96:18:58:46
    Binding : Active Cpu Pri : 15 Platform : S400-48t
    Slot-Mac : Loose Cfg Pri : 15 Cfg Slot : None
    Stacking Ports: 2
    Port-1 *1:52
    Port-2 *1:53
    Slot 2: State MASTER
    Status : Enabled Master : Yes MAC : 00:04:96:34:DD:C7
    Binding : Active Cpu Pri : 13 Platform : S400-48t
    Slot-Mac : Loose Cfg Pri : 13 Cfg Slot : None
    Stacking Ports: 2
    Port-1 *2:52
    Port-2 *2:53
    Fallback IP 10.1.1.6 NetMask 255.255.255.0
    Slot 3: Empty

    Slot 4: Empty

    Slot 5: Empty

    Slot 6: Empty

    Slot 7: Empty

    Slot 8: Empty

    --------------------------------------------------------------------------------

    <*> - Indicates Stacking Enabled
    - Indicates Stacking Disabled
    * Stk Master:37 #



  • 5.  RE: Stack master flip

    Posted 07-12-2015 14:19
    I reboot the second switch and the master goes back to the right switch, but the stack is still running on the fallback IP.

    Stk Master:1 # show stacking

    Stacking Data Base
    ==================

    Common Info
    Mode : Dup-No-Ring State : Up-Master Stacking : Enabled
    Master Slot: 1 Switches: 2 Local Slot: 1
    Config Slot: None Next Potential Master Slot : 2

    Slot 1: State MASTER
    Status : Enabled Master : Yes MAC : 00:04:96:18:58:46
    Binding : Active Cpu Pri : 15 Platform : S400-48t
    Slot-Mac : Loose Cfg Pri : 15 Cfg Slot : None
    Stacking Ports: 2
    Port-1 *1:52
    Port-2 *1:53
    Slot 2: State SLAVE
    Status : Enabled Master : No MAC : 00:04:96:34:DD:C7
    Binding : Active Cpu Pri : 13 Platform : S400-48t
    Slot-Mac : Loose Cfg Pri : 13 Cfg Slot : None
    Stacking Ports: 2
    Port-1 *2:52
    Port-2 *2:53
    Fallback IP 10.1.1.6 NetMask 255.255.255.0
    Slot 3: Empty

    Slot 4: Empty

    Slot 5: Empty

    Slot 6: Empty

    Slot 7: Empty

    Slot 8: Empty

    --------------------------------------------------------------------------------

    <*> - Indicates Stacking Enabled
    - Indicates Stacking Disabled