Alloy Computer Products NS-16T User's Manual
Contents
1. 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 1O0OBASE 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 required make routers relatively impractical Today switches are an ideal solution to most kinds of local area network congestion problems Features The 16 24 Port Fast Ether2. 00Mbps Fast Ethernet station Otherwise the LED is off when the port is connected to a 10Mbps Ethernet station Rear Panel The figure below shows the rear panel of the 16 24 Port Fast Ethernet switches AC Power Connector Technical Specifications Ge ie at COE IEEE 802 3u 100BASE TX Fast Ethernet Protocol Ethernet 10Mbps half duplex 20Mbps full duplex Data Transfer Rate Fast Ethernet 100Mbps half duplex 200Mbps full duplex Topology 10BASET 2 pair UTP Cat 3 4 5 EIA TIA 568 100 ohm STP 100BASE TX 2 pair UTP Cat 5 EIA TIA 568 100 ohm STP 16 x 10 100Mbps Auto MDI ports NS 16T NUMBELOL Ol 24 x 10 1 O0Mbps Auto MDI sie con Physical and Environmental AC inputs 100 to 240 VAC 50 or 60 Hz internal universal power supply Power Consumption Temperature Humidity Operating 10 90 Storage 5 90 Dimensions EMI Safety Performance Transmit Method Store and forward RAM Buffer 1 25Mbits per device Filtering Address Table 8K entries per device Packet Filtering Forwarding Rate 10Mbps Ethernet 14 880 pps 100Mbps Fast Ethernet 148 800 pps MAC Address Learning Automatic update Network Cables
3. All Oe SS User Manual NS 16T 16 Port Fast Ethernet Switch NS 24T 24 Port Fast Ethernet Switch Version 1 01 Feb 14 2006 Table of Contents About this User Manual Overview of the User Manual 00cceeeeeeeeececeeeeeeeeeeeeeeeterees 1 Terms Used Introduction Fast Ethernet Technology Switching Technology Features Unpacking and Installation Unpacking installation esea cata aes aac A bine e are ee E aa Rack Mounting Identifying External Components Front Panel Rear Panel Technical Specifications Caution Electronic Circuit devices are sensitive to static electricity Dry weather conditions or walking across a carpeted floor may cause you to acquire a static electrical charge To protect your switch always e Touch the metal chassis of your computer to ground the static electrical charge before you handle the switch e 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
4. Standard EN55022 EN60555 2 and the Generic European Immunity Standard EN50082 1 EMC EN55022 1988 CISPR Blaser 22 1985 EN60555 2 1995 class A EN60555 3 IEC 1000 4 2 1995 4K V CD 8KV AD IEC 1000 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 About this User Manual This User Manual will guide you on procedures to install Alloy 16 port Fast Ethernet NS 16T 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 m Chapter 1 Introduction describes the features of NS 16T and NS 24T Fast Ethernet switches m Chapter 2 Unpacking and Installation m 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 NS 24T 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 po
5. gotiation for speed and duplex modes on each port e Supports Auto MDI MDI X for each port e Wire speed reception and transmission e Store and Forward switching technology e Integrated address Look Up Engine supports 8K absolute MAC addresses e Supports 1 25Mbits of RAM for data buffering e Front panel diagnostic LED s e Broadcast storm protection e IEEE 802 3x flow control for full duplex e Back pressure flow control for half duplex e Standard 19 Rack mountable size 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 e ANS 16T or NS 24T Fast Ethernet Switch e Mounting Accessories for 19 Rack Shelf mounting e This Users Manual CD ROM e 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 swi
6. net 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 e 16 24 port 10 100Mbps Fast Ethernet Switch with RJ 45 connectors e Supports Auto ne
7. rt Fast Ethernet switch 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 1OBASE 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
8. tch 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 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 Then use screws provided with the equipment rack to mount each switch in the rack 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 24 port 10 100Mbps Fast Ethernet Switch LED Indicator Panel 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 connected to a Fast Ethernet or Ethernet station if the indicator is blinking green then traffic is present on the port 100Mbps green This LED indicator lights green when the port is connected to a 1
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