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Instruções de Operação Alloy Computer Products, Modelo NS-16T

Fabricante : Alloy Computer Products
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Dry weather conditions or walking across a carpeted floor may cause you to acquire a static electrical charge. To protect your switch, always: • Touch the metal chassis of your computer to ground the static electrical charge before you handle the switch. • Pick up the switch by holding it on the left and right edges only. Electronic Emission Notices Federal Communications Commission (FCC) Statement This equipment has been tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference when operated in a commercial environment. European Community (CE) Electromagnetic Compatibility Directive This equipment has been tested and found to comply with the protection requirements of European Emission Standard EN55022/EN60555-2 and the Generic European Immunity Standard EN50082-1. EMC: EN55022(1988)/CISPR class A 22(1985) EN60555-2(1995) class A EN60555-3 IEC1000-4-2(1995) 4K V CD, 8KV, AD IEC1000-4-3(1995) 3V/m 1KV – (power line), 0.5KV – (signal IEC1000-4-4(1995) line) Australian C-Tick Compliance. This equipment is compliant with the required Australian C-Tick standards ii About this User Manual This User Manual will guide you on procedures to install Alloy 16 port Fast Ethernet (NS16T) and 24 port (NS-24T) Fast Ethernet Switch models. The two models NS-16T and NS-24T differ in terms of port density – the former model offering 16x 10/100Mbps Fast Ethernet ports, and the latter 24x ports of the same specification. In all other respects the two models share identical characteristics. Overview of the User Manual • Chapter 1 “Introduction” describes the features of NS-16T and NS-24T Fast Ethernet switches • Chapter 2 “Unpacking and Installation” • Chapter 3 “Identifying External Components” • Chapter 4 “Technical Specifications” Terms Used 16/24 Port Fast Ethernet Switches: This term is used when discussing information that relates to both NS-16T 16 port and NS24T 24 port Fast Ethernet Switch models NS-16T: This term is used when discussing information that relates to the 16 port Fast Ethernet switch. NS-24T: This term is used when discussing information that relates to the 24 port Fast Ethernet switch. 1 Introduction This chapter describes the features of the Switch and some background information about Ethernet/Fast Ethernet switching technology. Fast Ethernet Technology The growing importance of LANs and the increasing complexity of desktop computing applications are fueling the need for high performance networks. A number of high-speed LAN technologies have been proposed to provide greater bandwidth and improve client/server response times. Among them, 100BASE-T (Fast Ethernet) provides a non- disruptive, smooth evolution from the current 10BASE-T technology. 100Mbps Fast Ethernet is a standard specified by the IEEE 802.3 LAN committee. It is an extension of the 10Mbps Ethernet standard with the ability to transmit and receive data at 100Mbps, while maintaining the CSMA/CD Ethernet protocol. Since 100Mbps Fast Ethernet is compatible with all other 10Mbps Ethernet environments, it provides a straightforward upgrade and takes advantage of the existing investment in hardware, software, and personnel training. Switching Technology Another approach to pushing beyond the limits of Ethernet technology is the development of switching technology. A switch bridges Ethernet packets at the MAC address level of 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 dividing a local area network into different segments, which don’t compete with each other for network transmission capacity. The switch acts as a high-speed selective bridge between the individual segments. The switch, without interfering with any other segment, automatically forwards traffic that needs to go from one segment to another. By doing this the total network capacity is multiplied, while still maintaining the same network cabling and adapter cards. For Fast Ethernet networks, a switch is an effective way of eliminating problems of chaining hubs beyond the “two-repeater limit.” A switch can be used to split parts of the network into different 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 characterised by higher latencies. Routers have also been used to segment local area networks, but the cost of a router, the setup and maintenance requ...