collision domains, making it possible to expand your Fast Ethernet network beyond the 205-meter network diameter limit for 100Base-TX networks. Switches supporting both traditional 10Mbps Ethernet and 100Mbps Fast Ethernet are also ideal for bridging between the existing 10Mbps networks and the new 100Mbps networks.

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, the setup and maintenance required make routers relatively impractical. Today switches are an ideal solution to most kinds of local area network congestion problems.

Power over Ethernet Technology

The Switch also supports IEEE802.3af in-line power technology. Power over Ethernet Technology is using the un-used UTP wire to transmit the power over the Cat-5 UTP to the remote end-node. Follow the IEEE802.3/802.3u Ethernet standard, 100Base-TX and 10Base-T will only use 2-pair of the UTP cable for data transmission and receiving (refer to Appendix B for more). And Power over Ethernet, however, will used the un-used 2-pair of UTP Cat. 5 cable for power transmission. The power transmission either can be a direct current without any detection/ protection or can also deploy the new standard IEEE802.3af.

Two devices required in this technology, injector and splitter. The injector combine the Ethernet signal and 48VDC currents through UTP cable to the remote end. And splitter split out the two things to the device, DC power to turn on the device and others for data sending / receiving. IEEE802.3af uses the protection circuit to detect the support features of remote end-node in a very short time. If the remote-end reply the injector with 802.3af supported signal, the injector will then provide the DC current over the wire to power on the Switch. Otherwise, the Switch will never be turned on.

Features

The Switch were designed for easy installation and high Performance in an environment where traffic on the network and the number of user increase continuously.

The Switch with their small, compact size was specifically designed for small to middle workgroups. The Switch can be installed where space is limited; moreover, it provides immediate access to a rapidly growing network through a wide range of user-reliable functions.

The Switch is ideal for deployment with multiple high-speed servers for shared bandwidth