Requirement:
Aruba 2930F Switch running firmware version WC.16.10.0003
Solution:Aruba Access-Points implement Power-Over-Ethernet via LLDP. The extended Power-via-MDI LLDP TLV enables advanced power management between LLDP-MED Endpoints and Network Connectivity Devices.
The PSE allocated power value is the maximum input average power that the PSE wants the PD to ever draw under this allocation if it is accepted. For a PD, it is the power value that the PD mirrors back to the remote system. This is the PSE allocated power value that was used by the PD to compute the power that it has currently requested from the remote system.
The PD requested power value is the maximum input average power the PD ever draws under this power allocation if accepted. For a PSE, it is the power value that the PSE mirrors back to the remote system. This is the PD requested power value that was used by the PSE to compute the power it has currently allocated to the remote system.
The “Power Via MDI” fields of the LLDP contain the Power-Over-Ethernet information.
Ethernet II, Src: ArubaAHe_0c:db:d4 (20:4c:03:0c:db:d4), Dst: LLDP_Multicast (01:80:c2:00:00:0e)
Link Layer Discovery Protocol
Chassis Subtype = MAC address, Id: 20:4c:03:0c:db:d4
Port Subtype = MAC address, Id: 20:4c:03:0c:db:d4
Time To Live = 120 sec
System Name = AP-3
System Description = ArubaOS (MODEL: 205H), Version Aruba AP
Capabilities
Management Address
Port Description = eth0
IEEE - Port VLAN ID
IEEE - VLAN Name
Aruba, a Hewlett Packard Enterprise Company - Unknown (1)
Aruba, a Hewlett Packard Enterprise Company - Unknown (4)
Ieee 802.3 - Link Aggregation
Ieee 802.3 - MAC/PHY Configuration/Status
Ieee 802.3 - Maximum Frame Size
Ieee 802.3 - Power Via MDI
1111 111. .... .... = TLV Type: Organization Specific (127)
.... ...0 0000 1100 = TLV Length: 12
Organization Unique Code: 00:12:0f (Ieee 802.3)
IEEE 802.3 Subtype: Power Via MDI (0x02)
MDI Power Support: 0x00
PSE Power Pair: 1
Power Class: 4 (5)
01.. .... = Power Type: Type 2 PD Device (1)
..01 .... = Power Source: 1 PSE
.... 0000 = Power Priority: Unknown (0)
PD Requested Power Value: 25.5. Watt
PSE Allocated Power Value: 25.5. Watt
End of LLDPDU
Configuration:Enable LLDP protocol on the switch.
Core-Switch(config)# lldp run
Verification
---------- Display LLDP Information ----------
Core-Switch# show lldp info remote-device 13
LLDP Remote Device Information Detail
Local Port : 13
ChassisType : mac-address
ChassisId : 204c03-0cdbd4
PortType : mac-address
PortId : 20 4c 03 0c db d4
SysName : AP-3
System Descr : ArubaOS (MODEL: 205H), Version Aruba AP
PortDescr : eth0
Pvid : 1
System Capabilities Supported : bridge, wlan-access-point
System Capabilities Enabled : wlan-access-point
Remote Management Address
Type : ipv4
Address : 10.0.14.50
Poe Plus Information Detail
Poe Device Type : Type2 PD
Power Source : Only PSE
Power Priority : Unknown
PD Requested Power Value : 25.5 Watts
PSE Allocated Power Value : 25.5 Watts
---------- Display Power Information ----------
Core-Switch# show power-over-ethernet 13
Status and Configuration Information for port 13
Power Enable : Yes PoE Port Status : Delivering
PLC Class/Type : 4/2 Priority Config : low
DLC Class/Type : 4/2 Pre-std Detect : off
Alloc By Config : usage Configured Type :
Alloc By Actual : lldp PoE Value Config : n/a
PoE Counter Information
Over Current Cnt : 0 MPS Absent Cnt : 0
Power Denied Cnt : 0 Short Cnt : 0
LLDP Information
PSE Allocated Power Value : 25.5 W PSE TLV Configured : dot3, MED
PD Requested Power Value : 25.5 W PSE TLV Sent Type : dot3
MED LLDP Detect : Disabled PD TLV Sent Type : dot3
Power Information
PSE Voltage : 54.9 V PSE Reserved Power : 9.4 W
PD Amperage Draw : 158 mA PD Power Draw : 8.7 W