Table 8: PoE types, classes, standards, power needs for SS PDs
Classes
Associated PoE types
Associated IEEE standard
Maximum power at PD port
Minimum power at PSE port
Class 0
1
802.3at
13 W / 15.4 W
Class 1
1 or 3
802.3at or 802.3bt
3.84 W / 4 W
Class 2
1 or 3
802.3at or 802.3bt
6.49 W / 7 W
Class 3
1 or 3
802.3at or 802.3bt
13 W / 15.4 W
Class 4
2 or 3
802.3at or 802.3bt
25.5 W / 30 W
Class 5
3
802.3bt
40 W / 45 W
Class 6
3
802.3bt
51 W / 60 W
Class 7
4
802.3bt
62 W / 75 W
Class 8
4
802.3bt
71.3 W / 90 W
Table 9: PoE types, classes, standards, power needs for DS PDs
Classes
Associated PoE types
Associated IEEE standard
Maximum power at each PD
pairset
Class 1
3 or 4
802.3bt
3.84 W
Class 2
3 or 4
802.3bt
6.49 W
Class 3
3 or 4
802.3bt
13 W
Class 4
3 or 4
802.3bt
25.5 W
Class 5
4
802.3bt
35.5 W
Configuring the switch
A 802.3bt PD will be detected and powered with default switch configuration. CLI configuration is not required
when the PDs are 802.3bt compliant or 802.3af or 802.3at compliant.
Troubleshooting non-compliant PDs
If the new Class 5-8 PDs support LLDP power negotiation, the default switch configuration does not require
additional CLI configuration changes. However, if the new .Class 5-8 PDs do not support LLDP or need the
maximum PoE power at initial power up, then switch CLI config changes are required on a port basis to disable
dot3Tlvs which provide Class 6 (60W) power delivery.
[no] lldp config <port> dot3TlvEnable poeplus_config
DLC enabled
When DLC is enabled, a Class 4 and above PD can draw up to 15.4W power at the PSE side. Essentially a Class
4 or above PD is demoted to Class 3 to maintain the legacy functionality of switches where a PD can draw 15.4W
at PLC. The PD must use LLDP to negotiate for higher power. For Dual Signature PD, each channel can draw up
to 15.4W of power to ensure each port can draw a total of 30W.
124
Aruba 2930F / 2930M Management and Configuration Guide
for ArubaOS-Switch 16.08
