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Resumen del manual
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 characterised 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. 2 Features The 16/24 Port Fast Ethernet Switches were designed for ease of installation and high performance in an environment where traffic on the network and the number of users increase continuously. The Switch with its 19” standard rack size is specifically designed for middle to large workgroups. The Switch 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 10Mbps or 100Mbps workgroups. With the highest bandwidth 200Mbps (100Mbps full- duplex mode), any port can provide workstations with a congestion-free data pipe for simultaneous access to the server. The Switch is expandable by cascading two or more switches together. As all ports support 200Mbps, the Switch can be cascaded from any port and to any number of switches. The Switch is a perfect choice for site planning to upgrade to Fast Ethernet in the future. Ethernet workgroups can connect to the Switch now, and change adapters and hubs anytime later without needing to change the Switch or reconfigure the network. The Switch combines dynamic memory allocation with store-and-forward switching to ensure that the buffer is effectively allocated for each port, while controlling the data flow between the transmit and receive nodes to guarantee against all possible packet loss. Other key features are: • 16/24-port 10/100Mbps Fast Ethernet Switch with RJ-45 connectors • Supports Auto-negotiation for speed and duplex modes on each port • Supports Auto-MDI/MDI-X for each port • Wire speed reception and transmission • Store-and-Forward switching technology • Integrated address Look-Up Engine, supports 8K absolute MAC addresses • Supports 1.25Mbits of RAM for data buffering • Front-panel diagnostic LED’s • Broadcast storm protection • IEEE 802.3x flow control for full-duplex • Back pressure flow control for half-duplex • Standard 19” Rack-mountable size 3 Unpacking and Installation This chapter provides unpacking and setup information for the 16/24 Port Fast Ethernet switches. Unpacking Before you start installing your switch, verify that the package contains the following: • A NS-16T or NS-24T Fast Ethernet Switch • Mounting Accessories (for 19” Rack Shelf mounting) • This Users Manual CD-ROM • AC Power Cord Please notify your supplier immediately if any of the aforementioned items are missing or damaged. Installation The site where you install the 16/24 Port Fast Ethernet Switch may greatly affect its performance. When installing, consider the following pointers: Install the Switch in a fairly cool and dry place. See Specifications for the acceptable temperature and humidity operating ranges. Install the Switch in a site free from strong electromagnetic field generators (such as motors), vibration, dust, and direct exposure to sunlight. Leave at least 10cm of space at the front and rear of the switch for ventilation. Install the Switch on a sturdy, level surface that can support its weight, or in an EIA standard-size equipment rack. For information on rack installation, see the next section, Rack mounting. When installing the Switch on a level surface, attach the rubber feet to the bottom of each device. The rubber feet cushion the hub and protect the hub case from scratching. 4 Rack Mounting The 16/24 Port Fast Ethernet Switch can be mounted in an EIA standard-size, 19-inch rack, which can be placed in a wiring closet with other equipment. Attach the mounting brackets to the switch’s front panel (one on each side), and secure them with the provided screws. 16-Port10/100MbpsEthernetSwitch SYSTEM POWER FX Then, use screws provided with the equipment rack to mount each switch in the rack. 16-Port10/100MbpsEthernetSwitch SYSTEM POWER FX 5 Identifying External Components This section identifies all the major external components of the switch. Front Panel The figures below show the front panels of each of the switches. Power 13 14 15 16 51 9 62 10 73 11 84 12 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 LINK 100Mbps 16-port 10/100Mbps Fast Ethernet Switch 24-port 10/100Mbps Fast Ethernet Switch LED Indicator Panel 16-port 10/100Mbps Fast Ethernet Switch 24-port 10/100Mbps Fast Ethernet Switch • Power (PWR) This indicator lights green when the switch is receiving power, otherwise, it is off. • Link / Activity ( green ) This indicator lights green when the port is connecte...
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