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the Ethernet protocol transmitting among connected Ethernet or fast Ethernet LAN
segments.
Switching is a cost-effective way of increasing the total network capacity available
to users on a local area network. A switch increases capacity and decreases
network loading by making it possible for a local area network to be divided into
different segments which don’t compete with each other for network transmission
capacity, giving a decreased load on each.
The switch acts as a high-speed selective bridge between the individual segments.
Traffic that needs to go from one segment to another is automatically forwarded by
the switch, without interfering with any other segments. This allows the total
network capacity to be multiplied, while still maintaining the same network cabling
and adapter cards.
Switching LAN technology is a marked improvement over the previous generation of
network bridges, which were characterized by higher latencies. Routers have also
been used to segment local area networks, but the cost of a router and the setup
and maintenance required make routers relatively impractical. Today’s switches are
an ideal solution to most kinds of local area network congestion problems.
1.3
Power over Ethernet (PoE)
Power over Ethernet (PoE) integrates power and data onto one single cabling
infrastructure, eliminating the need to have AC power available at all locations.
Power and Data is integrated onto the same cable, supporting category 5/5e up to
100 Meters, PoE will provide power to PoE compatible device, such as IP
telephones, wireless LAN access points and IP security cameras.
PoE is already widely adopted in the market, saving up to 50% of overall installation
costs by eliminating the need to install separate electrical wiring and power outlets.
2.
Features
8 ×10/100Mbps Auto-negotiation Fast Ethernet RJ45 ports with 4-port PoE
function (port-1 ~ port-4)(A02-F8PoE)
8 ×10/100Mbps Auto-negotiation Fast Ethernet RJ45 ports with 8-port PoE
function (port-1 ~ port-8)(A02-F8PoE+)
Compliant with 802.3af specification
Supports PoE power up to 15.4W for PoE port
Supports PoE power up to 62W for all PoE ports (A02-F8PoE)
Supports PoE power up to 124W for all PoE ports (A02-F8PoE+)
Supports PoE Powered Device (PD) classification identify
Each port supports auto MDI/MDIX, so there is no need to use cross-over
cables or an up-link port
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