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02-21-2021 11:06 PM - edited 02-21-2021 11:07 PM
02-21-2021 11:06 PM - edited 02-21-2021 11:07 PM
changing the stacking topology - will it affect the current port config?
Hey!
We have two stacks in our wiring closet with following stacking configurations
Stack 1
Mbr
ID Mac Address Model Pri Status
--- ------------- -------------------------------------- --- ---------------
1 xyzyxz HP J9729A 2920-48G-POE+ Switch 255 Commander
2 xyzyxz HP J9729A 2920-48G-POE+ Switch 192 Standby
3 xyzyxz HP J9729A 2920-48G-POE+ Switch 128 Member
Stack 2
Mbr
ID Mac Address Model Pri Status
--- ------------- -------------------------------------- --- ---------------
1 xyzyxz HP J9729A 2920-48G-POE+ Switch 255 Member
2 xyzyxz HP J9729A 2920-48G-POE+ Switch 192 Member
3 xyzyxz HP J9729A 2920-48G-POE+ Switch 128 Standby
4 xyzyxz HP J9729A 2920-48G-POE+ Switch 64 Commander
So in my opinion the second stacking configuration is total garbage, i guess the correct priority order due to the commander standby member priority should be something like the followig, am i right? :
1 xyzyxz HP J9729A 2920-48G-POE+ Switch 255 Commander
2 xyzyxz HP J9729A 2920-48G-POE+ Switch 192 Standby
3 xyzyxz HP J9729A 2920-48G-POE+ Switch 128 Member
4 xyzyxz HP J9729A 2920-48G-POE+ Switch 64 Member
So my two final question:
1. Is my theory correct?
2. If i change the stacking priority order to the just mentionend one above - will it affect the current port configuration on one or maybe on all of the swithches`? So concerning untagged and tagged vlans of the ports etc.
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02-22-2021 09:30 AM
02-22-2021 09:30 AM
Re: changing the stacking topology - will it affect the current port config?
Hi!
- Your theory is correct (Commander should be configured with the highest priority - range 1-255 thus 255 - and all other remaining member roles - Standby, Member - should use a lower priority value as per your "should-be" example for your Stack 2).
- Never tried in a similar scenario...BUT...if your actual priorities are permitting actual roles in that order...then fixing those roles' priorities with the correct/expected priority values should not change the "as-is" members numbering in any case and, consequently, the related member's ports numbering.
You heve to consider that priority setting comes into play when a stack election occurs, as happens - as example - if both the Commander and the Standby members (or an entire Stack) has rebooted at the same time. So Priority is one thing and Members numbering is another thing. Priority comes into play in the Commander election process but Members numbering is something written "on the stone" for a Stack.
I'm not an HPE Employee
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05-03-2021 08:03 AM - last edited on 05-07-2021 01:08 AM by Parvez_Admin
05-03-2021 08:03 AM - last edited on 05-07-2021 01:08 AM by Parvez_Admin
Re: changing the stacking topology - will it affect the current port config?
@parnassus Thanks for the answer, so basically i want not only to change the priority numbers i also want to change the order, because the current member 1 one the stack should be the member
Initial situation:
1 xyzyxz HP J9729A 2920-48G-POE+ Switch 255 Member
2 xyzyxz HP J9729A 2920-48G-POE+ Switch 192 Member
3 xyzyxz HP J9729A 2920-48G-POE+ Switch 128 Standby
4 xyzyxz HP J9729A 2920-48G-POE+ Switch 64 Commander
As it should be
1 xyzyxz HP J9729A 2920-48G-POE+ Switch 255 Commander
2 xyzyxz HP J9729A 2920-48G-POE+ Switch 192 Standby
3 xyzyxz HP J9729A 2920-48G-POE+ Switch 128 Member
4 xyzyxz HP J9729A 2920-48G-POE+ Switch 64 Member
The current member 1 of the stack which has the type "member" and the priority "255" should become the type of "commader" - its because this switch is the one which has the physical uplink to the core switch
So what would be the best procedure to realize this process?