Chapter 1: Overview
42
Power Over Ethernet
The x530L-10GHXm, x530L-18GHXm, x530L-28GPX, and x530L-52GPX
switches feature PoE on twisted pair ports. With PoE, the switch supplies
DC power to network devices over the same twisted pair cables that carry
the network traffic.
PoE can make it easier to install networks. The selection of a location for a
network device can be limited by whether there is a power source nearby.
This often limits equipment placement or requires the added time and cost
of having additional electrical sources installed. With PoE, you can install
PoE-compatible devices wherever they are needed without having to
worry about whether there are power sources nearby.
A device that provides PoE to network devices is referred to as
power
sourcing equipment
(PSE). It functions as a central power source for other
network devices.
Devices that receive their power from a PSE are called
powered devices
(PD). Examples include wireless access points, IP telephones, webcams,
and even other Ethernet switches.
The x530L-10GHXm, x530L-18GHXm, x530L-28GPX, and x530L-52GPX
switches automatically determine whether devices connected to their ports
are powered devices. Ports that are connected to network nodes that are
not powered devices (that is, devices that receive their power from
another power source) function as regular Ethernet ports, without PoE.
The PoE feature remains activated on the ports but no power is delivered
to the devices.
PoE Standards
The x530L-28GPX, x530L-52GPX, x530L-18GHXm, and x530L-10GHXm
switches support these PoE standards:
PoE (IEEE 802.3af): This standard provides up to 15.4 watts at the
switch port for powered devices that require up to 13.0 watts.
PoE+ (IEEE 802.3at): This standard provides up to 30.0 watts at
the switch port for powered devices that require up to 25.5 watts.
The x530L-18GHXm and x530L-10GHXm switches support this additional
PoE standard:
PoE++ (IEEE 802.3bt): This standard provides up to 90.0 watts at
the switch ports for powered devices that require up to 71.0 watts.
Summary of Contents for x530L Series
Page 8: ...Contents 8 ...
Page 12: ...Tables 12 ...
Page 16: ...Preface 16 ...
Page 56: ...Chapter 1 Overview 56 ...
Page 88: ...Chapter 2 Virtual Chassis Stacking 88 ...
Page 140: ...Chapter 6 Installing the Switch on a Wall 140 ...
Page 202: ...Chapter 8 Building the Stack Trunk with 5Gbps Multi Speed Ports 202 ...