D-Link DGS-6600 Series Specifications download pdf (Page 17)

More than connectivity

Benets of PoE

• Reduced Costs –With PoE , only

one cable - a simple CAT-5 Ethernet

is required to be routed to each

device instead of two and fewer

power adapters are needed. In large

organisations this brings a major

cost reduction.

• Flexibility: A PoE enabled appliance

can be installed virtually anywhere;

without the need for AC outlets.

This provides exibility and scalability

in placing these network equipments

– Switches, Wireless Access Points,

and IP Cameras at most optimal

locations instead of locations where

power is available. This also enables

to have better network designs.

• Reliability- PoE infrastructure enables

centralised power management

that provides power back up with

an Uninterrupted Power Supply (UPS)

power to the devices and all the

distributed PD networking devices;

even during power failures this

ensures the reliability and availability

of powered devices.

• Network Control – Network

administrators can control and

monitor devices using SNMP. Devices

can be powered down when not in

use or if there is unauthorised access,

which allows for increased security.

• Simplicity to add, move and

change the network

PoE-enabled switches help network

adds, moves and changes to be

accomplished faster. It allows the

network to be more exible and

accommodating to changing

business and network

requirements.

• Centralised Power Management

Centrally managed power enables

remote shutdown or remote reset

capabilities. Through managing a

PoE-enabled LAN switch via a web

browser or by SNMP, remote

networking devices can be easily

reset or shut down saving the time

and expense of dispatching a

technician.

What is PoE +

The original IEEE 802.3af-2003 PoE

standard provides up to 15.4 W of DC

power (minimum 44 V DC and 350 mA

to each device. Only 12.95 W is assured

to be available at the powered device as

some power is dissipated in the cable.

The updated IEEE 802.3at PoE standard

also known as PoE+ or PoE plus,

provides up to 25.5 W of power.

PoE+ is benecial for devices that

require more power such as Pan-Tilt-

Zoom cameras, thin clients, video

phones and WiMAX transmitters. It

also expands PoE functionality to wider

range, making it possible to power a

larger number of edge devices from a

single PoE port

Look for:

802.3af PoE support; number of ports

that can have PoE turned on (some

switches set an overall limit rather than

allowing all ports to be powered); high

power PoE.

Keeping it green

When it comes to saving energy and

the planet, every little helps. Moreover,

network switches are mostly left on

all the time so small savings here can

have a big impact.

Switch vendors continually innovate

and the latest products will be a

lot more ecient than those they

replace, even when they’re only a

couple of years old. Cool-running

fanless designs are now popular plus

there are a couple of specic “Green

Ethernet” features worth looking out

for whereby the power the switch

needs to work is kept to an absolute

minimum. D-Link was one of the rst

to introduce these features and the

technology it developed has been

adopted as the basis for standards

now implemented industry-wide.

Look for:

Power down of idle ports, to put

ports into a low-power “sleep” state

when not actively transmitting data or

when there’s nothing attached; Cable

length optimisation, to ne-tune the

power level to suit the length of cable

attached to each port.

More than connectivity

Power to the switch!

Power and data can be combined

in two ways, one of which is to send

data over mains wiring rather than

build a separate network. Known as

PowerLine, this technology is mostly

used to build home and small business

networks while the second approach

- to carry power over the data network

– has much wider uses.

With Power over Ethernet PoE you

only need one cable for both power

and data so wireless access points and

IP surveillance cameras, for example,

can be installed without having to run

power to inaccessible places such as

ceilings and roofs. You can also protect

such devices from outages, by adding

a central Uninterruptible Power Supply

(UPS), and both monitor and manage

energy consumption centrally perhaps

even switching devices o when

they’re not needed.

Support for PoE can be added to

existing networks but, if you’re serious

about it, PoE enabled switches don’t

need additional wiring and are easier

to manage. Either way check for

support for industry standards, both

on the switches and networking

devices you want to power.

Look for:

802.3af PoE support; number of ports

that can have PoE turned on (some

switches set an overall limit rather than

allowing all ports to be powered); high

power PoE.

Keeping it green

When it comes to saving energy and

the planet, every little helps. Moreover,

network switches are mostly left on

all the time so small savings here can

have a big impact.

Switch vendors continually innovate

and the latest products will be a

lot more ecient than those they

replace, even when they’re only a

couple of years old. Cool-running

fanless designs are now popular plus

there are a couple of specic “Green

Ethernet” features worth looking out

for whereby the power the switch

needs to work is kept to an absolute

minimum. D-Link was one of the rst

to introduce these features and the

technology it developed has been

adopted as the basis for standards

now implemented industry-wide.

Look for:

Power down of idle ports, to put

ports into a low-power “sleep” state

when not actively transmitting data or

when there’s nothing attached; Cable

length optimisation, to ne-tune the

power level to suit the length of cable

attached to each port.

Networks today demand it all - high

bandwidth, converged architectures,

guaranteed interoperability, robust

security and future compatibility.

D-Link switching solutions oer all

that and more at a price point tailored

to the budget-conscious market.

D-Link’s comprehensive portfolio of

switches is not only reliable and secure

but also encompasses key features

that help your network perform even

better. These features provide exibility

and energy savings to the network.

Many of our D-Link switches include

PoE functionality, delivering power to

devices where power sockets are not

readily available. Our D-Link Green

policy enables switches to save power

when not in use further saving costs and

becoming environmentally friendly.

More than

connectivity

More than connectivity

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D-Link DGS-6600 Series Specifications Page 17

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