Wired Intelligent Edge

Trying to enable power-over-ethernet redundancy - however it doesn't think that the second power supply is connected? 

MYSWT(config)# sh system power-supply

Power Supply Status:

PS# Model Serial State AC/DC + V Wattage
---- --------- ------------ ----------------- -------------- ---------
1 J9828A IN77G4D1SW Powered AC 120V/240V 700
2 J9828A IN77G4D0FK Powered AC 120V/240V 700

2 / 2 supply bays delivering power.
Total power: 1400 W

MYSWT(config)# sh power-over-ethernet

Status and Counters - System Power Status

System Power Status : No redundancy
PoE Power Status : No redundancy
Operational Power Status : No redundancy

Chassis power-over-ethernet:

Total Available Power : 512 W
Total Failover Pwr Avl : 266 W
Total Redundancy Power : 0 W
Total Power Drawn : 27 W +/- 6W
Total Power Reserved : 27 W
Total Remaining Power : 485 W

Internal Power

Total Power Aux Power
PS (Watts) (Watts) Status
----- ------------- -------------- ---------------------
1 266 Not Supported POE+ Connected
2 246 Not Supported POE+ Connected

MYSWT(config)# power-over-ethernet redundancy full
This operation may interrupt power to some ports.
Do you want to continue [y/n]? y

Redundancy is not supported when only one power supply unit is powered.

Thanks for the reply:

Software revision KB.16.05.0004

6

show modules ?

MYSWT# sh modules

Status and Counters - Module Information

Chassis: 5406Rzl2 J9850A 

Allow V2 Modules: Yes

Core Mod
Slot Module Description Serial Number Status Dump Ver
----- -------------------------------------- -------------- -------- ----- ---
MM1 HP J9827A Management Module 5400Rzl2 SG70G4C3FF Active YES 1
MM2 HP J9827A Management Module 5400Rzl2 SG7AG4C183 Standby YES 1

A HP J9987A 24p 10/100/1000BASE-T v3 ... SG79GPC07S Up YES 3
B HP J9987A 24p 10/100/1000BASE-T v3 ... SG7AGPC0BR Up YES 3
D HP J9990A 20p PoE+ / 4p SFP+ v3 zl2... SG93GPG075 Up YES 3
F HP J9988A 24p 1GbE SFP v3 zl2 Mod SG7AGPD04L Up YES 3

That's interesting:

Aruba 5412R zl2 (KB.16.05.0007, thus a not too recent software release):

A5412Rzl2(config)# power-over-ethernet 
 poe-reset             Use this command to reset the PoE controller to which the port belongs.
 pre-std-detect        Detect and power pre-802.3af-standard devices.
 redundancy            Set how much power is held in reserve for redundancy.
 slot                  Optional - Specify a valid powered-slot list for power threshold setting or omit to set all powered-slots.
 threshold             Set the threshold at which the system will send an excess power consumption notification trap.

Now on a VSF made of two Aruba 5406R zl2 (running the very same software version):

A5406Rzl2-VSF(config)# power-over-ethernet 
 poe-reset             Use this command to reset the PoE controller to which the port belongs.
 pre-std-detect        Detect and power pre-802.3af-standard devices on the specified stack members or member to set on all members
 slot                  Optional - Specify a valid powered-slot list for power threshold setting or omit to set all powered-slots.
 threshold             Set the threshold at which the system will send an excess power consumption notification trap.
 vsf                   Set PoE configuration for the specified members.

So the power-over-ethernet redudancy option seems to be not available on my Aruba 5406R zl2...and I don't think this absence is due to VSF deployment scenario (2x5406R)versus a Standalone scenario (1x5412R) since the Power Supplies PoE redundancy option should be tied, as a feature, to the chassis operation and it should be independent by VSF scenarios versus Standalone scenarios.

Clearly we have the maximum numbers of Power Supplies installed on both scenarios:

A5412Rzl2# show system power-supply

Power Supply Status: 

 PS#    Model      Serial          State         AC/DC  + V    Wattage
 ---- --------- ------------ ----------------- -------------- ---------
   1   J9829A    CN6AK36xxx   Powered           AC 120V/240V     1100
   2   J9829A    CN6AK36xxx   Powered           AC 120V/240V     1100
   3   J9829A    CN6AK36xxx   Powered           AC 120V/240V     1100
   4   J9829A    CN6AK36xxx   Powered           AC 120V/240V     1100

   4 /  4 supply bays delivering power.
   Total power: 4400 W

A5406Rzl2-VSF# show system power-supply

Power Supply Status: 

  VSF
  Member  PS#   Model     Serial      State           AC/DC  + V        Wattage   Max   
  ------- ----- --------- ----------- --------------- ----------------- --------- ------
  1       1     J9829A    CN6AK36xxx  Powered         AC 120V/240V        45      1100
  1       2     J9829A    CN6AK36xxx  Powered         AC 120V/240V        48      1100
  2       1     J9829A    CN6AK36xxx  Powered         AC 120V/240V        45      1100
  2       2     J9829A    CN6AK36xxx  Powered         AC 120V/240V        49      1100

---

@wrightmt wrote: Allow V2 Modules: Yes

---

Side note (OT): considering you have all and only V3 zl2 Modules why not allowing v3 mode of operation only? It's a change that will require a reboot...but you will gain 40Gbps of throughput (80Gbps per Module) facing the backplane on each Aruba v3 zl2 Module actually installed...plus other features, see below:

Thanks for this tip - will do! We have a few of these units, no doubt we're running them all in this mode!

For anyone else with this issue, the fix in the end was updating to KB.16.09.0001

wright, can you clarify what exactly is fixed? Is it just that the show power-over-ethernet display shows the redundancy power available? And my 5412 vsf stack also does not have the (config)power-over-ethernet redundancy command available, does not mean redundancy is not available when power is lost to one supply?  Running KB 16.08.02.

Previously I wasn't able to enable PoE redundancy. You're correct that losing power to one supply would would of course still enable the switch to run, however now that redundancy is enabled (in my understanding) available PoE power is calculated to ensure all PoE devices can run on one power supply if necessary.