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- RE: Stack master flip
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Stack master flip
Stack master flip
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‎07-12-2015 01:44 PM
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?
4 REPLIES 4
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‎07-12-2015 02:19 PM
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
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
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‎07-12-2015 01:53 PM
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 #
* 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 #
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‎07-12-2015 01:48 PM
Sorry, yes, Summit x400s.
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‎07-12-2015 01:47 PM
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
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
