Power Over Ethernet; Poe Versions; Table 1: Maximum Power Levels - Allied Telesis AT-IS230-10GP Installation Manual

Chapter 1: Overview

Power over Ethernet

PoE Versions

Switch Model/
Ports
AT-IS230-10G
P (Ports 1 to 8)
AT-IS130-6GP
(Ports 1 to 4)
30
The ports that support PoE can supply electrical power to network devices
over the same twisted-pair cables that carry network traffic. The feature
can simplify network installation and maintenance because it allows you to
use the switch as a central power source for other network devices.
Devices that receive their power over Ethernet cables are called powered
devices (PD). Examples of PDs include wireless access points, IP
telephones, web cams, and even other Ethernet switches. A PD
connected to a port on the IS Series switches receives both network traffic
and power over the same twisted-pair cable.
The IS Series switches support the following versions of Power over
Ethernet:
PoE (IEEE 802.3af)

PoE+ (IEEE 802.3at)

For PoE and PoE+ devices, power is delivered from the switch

over four of the eight Ethernet cable strands using the Alternative
A method. With Alternative A, power is delivered on strands 1, 2, 3,
and 6, which are the same strands that carry the 10/100Base-TX
network traffic.
Table 1 lists the switch ports that support PoE and the maximum power
levels. The total available PoE power that the AT-IS230-10GP switch can
supply from all the ports combined is 120 Watts. The total available PoE
power that the AT-IS130-6GP switch can supply from all the ports
combined is 90 Watts.
Table 1. Maximum Power Levels
Switch Maximum Power Budget
120 Watts
90 Watts
DC51~57V input (IEEE802.3at) 90W
DC45~57V input (IEEE802.3af) 61.6W
Maximum
PoE Power
Version Output at
Switch Port
PoE 15.4W
PoE+ 30.0W
PoE 15.4W
PoE+ 30.0W
Maximum
Power at
PD
13W
25.5W
13W
25.5W