11-18-2022 01:39 PM
On a new 3850 Stack the power stack light is orange and I was getting the following on the CLI/Logs
Switch 1's power stack has conflicting power priorities.
I have been able to change switch 2's priorities to be different than switch 1 which seems to have eliminated the errors but I am not sure if the settings I put in are good long term.
Can someone explain what the difference between the Low Port priority value, high port priority value, and switch priority values do in regard to stack power. My current priorities (after my changes) are below.
Are these ok or what can you recommend. Other 3850 stacks I have configured have never needed any changes in power stack configuration to avoid this error.
3850-Stack#show stack-power detail
Power Stack Stack Stack Total Rsvd Alloc Sw_Avail Num Num
Name Mode Topolgy Pwr(W) Pwr(W) Pwr(W) Pwr(W) SW PS
-------------------- ------ ------- ------ ------ ------ ------ ----- ----
Powerstack-1 SP-PS Ring 2860 30 620 2210 2 4
Power stack name: Powerstack-1
Stack mode: Power sharing
Stack topology: Ring
Switch 1:
Power budget: 1390
Power allocated: 310
Low port priority value: 21
High port priority value: 12
Switch priority value: 3
Port 1 status: Connected
Port 2 status: Connected
Neighbor on port 1: Switch 2 - *******
Neighbor on port 2: Switch 2 - *******
Switch 2:
Power budget: 1440
Power allocated: 310
Low port priority value: 18
High port priority value: 9
Switch priority value: 2
Port 1 status: Connected
Port 2 status: Connected
Neighbor on port 1: Switch 1 - *********
Neighbor on port 2: Switch 1 - ********
11-19-2022 02:33 AM
that is for short term to fix the issue :
Long term and make consistency follow below guide and has good explanation :
11-21-2022 11:02 AM
Do you have any specific recommendations as to what settings to go with? Usually we just rely on the defaults and it works just fine. We typically populate all power supply bays and rely on stack-power as last ditch redundancy (in case one switch loses both power supplies it will be functional). Any specific suggestions? I find it weird that this particular switch stack decided to give this error but none of my others did.
11-21-2022 11:35 AM
check the document has provided.
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