We, have a new 3850 stack with four switches. At first, the stackpower was set to redundant, so we were only getting about 200-ish wattage per switch. We set it to power-sharing and now have about 400+ on some switches. However, as you can see switch 2 is only showing 338. The power stack summary detail shows we should be getting over 700 watts. Cisco TAC is thinking it's a bug or something else, but not giving us any real information. Does anyone have any idea why we aren't getting the true full wattage on this stack? We have the cabling correct on the back of the switches, we verified this will two different Cisco TAC personnel.
Module Available Used Remaining
(Watts) (Watts) (Watts)
------ --------- -------- ---------
1 475.0 457.3 17.7
Module Available Used Remaining
(Watts) (Watts) (Watts)
------ --------- -------- ---------
2 338.0 331.8 6.2
Module Available Used Remaining
(Watts) (Watts) (Watts)
------ --------- -------- ---------
3 459.0 454.1 4.9
Module Available Used Remaining
(Watts) (Watts) (Watts)
------ --------- -------- ---------
4 434.0 410.1 23.9
AD01-MDF-3850-01# show stack-power budgeting
Power Stack Stack Stack Total Rsvd Alloc Unused Num Num
Name Mode Topolgy Pwr(W) Pwr(W) Pwr(W) Pwr(W) SW PS
-------------------- ------ ------- ------ ------ ------ ------ --- ---
Powerstack-1 SP-PS Ring 2860 49 2826 -15 4 4
Power Stack PS-A PS-B Power Alloc Avail Consumd Pwr
SW Name (W) (W) Budgt(W) Power(W) Pwr(W) Sys/PoE(W)
-- -------------------- ----- ----- -------- -------- ------ -----------
1 Powerstack-1 715 0 740 755 -15 86 /242
2 Powerstack-1 715 0 618 618 0 76 /152
3 Powerstack-1 715 0 739 739 0 84 /234
4 Powerstack-1 715 0 714 714 0 77 /215
-- -------------------- ----- ----- -------- -------- ------ -----------
Totals: 2826 -15 323 /843
AD01-MDF-3850-01# show stack-power detail
Power Stack Stack Stack Total Rsvd Alloc Unused Num Num
Name Mode Topolgy Pwr(W) Pwr(W) Pwr(W) Pwr(W) SW PS
-------------------- ------ ------- ------ ------ ------ ------ --- ---
Powerstack-1 SP-PS Ring 2860 49 2826 -15 4 4
Power stack name: Powerstack-1
Stack mode: Power sharing
Stack topology: Ring
Switch 2:
Power budget: 618
Power allocated: 618
Low port priority value: 22
High port priority value: 13
Switch priority value: 4
Port 1 status: Connected
Port 2 status: Connected
Neighbor on port 1: Switch 3 - 00eb.d594.4f00
Neighbor on port 2: Switch 1 - 00eb.d56b.5b80
Switch 3:
Power budget: 739
Power allocated: 739
Low port priority value: 20
High port priority value: 11
Switch priority value: 2
Port 1 status: Connected
Port 2 status: Connected
Neighbor on port 1: Switch 4 - 00eb.d594.5f00
Neighbor on port 2: Switch 2 - 00eb.d5a4.e680
Switch 4:
Power budget: 714
Power allocated: 714
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 1 - 00eb.d56b.5b80
Neighbor on port 2: Switch 3 - 00eb.d594.4f00
Switch 1:
Power budget: 755
Power allocated: 755
Low port priority value: 19
High port priority value: 10
Switch priority value: 1
Port 1 status: Connected
Port 2 status: Connected
Neighbor on port 1: Switch 2 - 00eb.d5a4.e680
Neighbor on port 2: Switch 4 - 00eb.d594.5f00
