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Power over Ethernet
PoE Versions
Ethernet Cabling
for PoE devices
Ports 1 to 8 on the IS230-10GP switch switch support Power over Ethernet
(PoE). With PoE, the switch 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 IS230-10GP switch receives both network
traffic and power over the same twisted-pair cable.
The IS230-10GP switch supports the following versions of Power over
Ethernet:
PoE (IEEE 802.3af)
PoE+ (802.3at)
For PoE and PoE+ devices, power is delivered from the
IS230-10GP switch over four of the eight 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.
Note
Alternative B method of delivering PoE power (over strands 4, 5, 7
and 8) is not supported by the IS230-10GP switch.
Table 2 lists the switch ports that support PoE and the maximum power
levels. The total available PoE power that the IS230-10GP switch can
supply from all the ports combined is 120 Watts.
Table 2. Maximum Power Levels
PoE Version
Switch Ports
PoE
PoE+
The cable requirements for the PoE twisted-pair ports on the IS230-10GP
switch for powered devices are given in Table 3 on page 26. For cable
requirements for ports connected to non-PoE devices, refer to Table 1 on
page 24.
IS230-10GP Industrial Ethernet Layer 2 Switch Installation Guide
Maximum
Power Output
at Switch Port
1 to 8
15.4W
1 to 8
30.0W
Maximum
Power at PD
12.95W
25.5W
25
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