Allied Telesis AT GS900/5E User's Manual
Contents
1. The following sections describe hardware features of the AT GS900 16 and AT GS900 24 Fanless Gigabit Ethernet switches O System and Port LEDs O Twisted Pair Ports oO AC Power Connector The AT GS900 16 Fanless Gigabit Ethernet switch features 16 twisted pair ports and the AT GS900 24 Fanless Gigabit Ethernet switch features 24 twisted pair ports Type of Connector The twisted pair ports feature 8 pin RJ 45 connectors For the port pinouts refer to RJ 45 Twisted Pair Port Connectors RJ 45 Twisted Pair Port Connectors on page 39 Speed The ports are 10Base T 100Base TX and 1000Base T compliant and are capable of 10 megabits per second Mbps 100 Mbps and 1000 Mbps speeds The ports are IEEE 802 3u Auto Negotiation compliant With Auto Negotiation the switch automatically matches the highest possible common speed between each switch port and each end node For example if an end node is capable of only 10 Mbps the switch sets the port connected to the end node to 10 Mbps Duplex Mode Each twisted pair port on the switch can operate in either half or full duplex mode The twisted pair ports are IEEE 802 3u compliant and will Auto Negotiate the duplex mode setting Note For the switch to set the duplex mode for each port correctly the end nodes that you connect to the switch ports should also use Auto Negotiation Otherwise a duplex mode mismatch can occur affecting network performance For further info2. Compliance Standards viii A DD tee 39 RJ 45 Twisted Pair Port CONNEC ONS cusco nta 39 Contents Preface This guide contains instructions on how to install the AT GS900 16 and AT GS900 24 Gigabit Ethernet Switches This preface contains the following sections Oo Safety Symbols Used in this Document on page 8 O Where to Find Web based Guides on page 9 a Contacting Allied Telesis on page 10 Preface Safety Symbols Used in this Document This document uses the safety symbols defined in Table 1 Table 1 Safety Symbols A Symbol Meaning Description Caution Performing or omitting a specific action may AN result in equipment damage or loss of data Warning Performing or omitting a specific action may result in electrical shock AT GS900 16 AT GS900 24 Fanless Gigabit Ethernet Switches Installation Guide Where to Find Web based Guides The installation and user guides for all Allied Telesis products are available in portable document format PDF on our web site at www alliedtelesis com You can view the documents online or download them onto a local workstation or server Preface Contacting Allied Telesis Online Support Email and Telephone Support Returning Products For Sales or Corporate Information Warranty This section provides Allied Telesis contact information for technical support as well as sales or corporate information You c
3. O Since the twisted pair port when operating in Auto Negotiation is Auto MDI MDI X you can use either a straight through or crossover twisted pair cable to connect any type of network device to a port on the switch If you disable Auto Negotiation on the port the port defaults to MDI X Apply power to the switch by plugging the AC DC power adapter into an AC power outlet the plug the DC connector to the power receptacle of the switch AN Warning The power cord is used as a disconnection device To de energize equipment disconnect the power cord a E3 8 Verify that either the POWER LED is green If the LED is OFF refer to Troubleshooting on page 37 for instructions Note The switch perform a self diagnostic test upon power up This takes about 20 seconds to complete 33 Chapter 2 Installation 9 Power ON the end nodes connected to the switch 10 Check that all the SPD LINK ACT LEDs are green If any of the LEDs are OFF refer to Troubleshooting on page 37 for instructions The switch is now ready for use 34 AT GS900 16 AT GS900 24 Fanless Gigabit Ethernet Switches Installation Guide Cabling the Switch To connect to the ports on the AT GS900 16 and AT GS900 24 switches perform the following procedure 1 Connect the twisted pair data cables to the RJ 45 ports on the switch as illustrated in Figure 12 Figure 12 Connecting the Twisted Pair Data Cables 2 Power o
4. connecting any network device to a twisted pair port on the switch For example a port operating at 10 or 100 Mbps uses two pairs of twisted pair wiring while a port operating at 1000 Mbps uses four pairs of twisted pair wiring 25 Chapter 2 Installation Unpacking the Switch To unpack an AT GS900 16 or an AT GS900 24 switch perform the following procedure 1 Remove all components from the shipping package Note Store the packaging material in a safe location You must use the original shipping material if you need to return the unit to Allied Telesis 2 Place the switch on a level secure surface 3 Ensure the following hardware components are included in your switch package If any item is missing or damaged contact your Allied Telesis sales representative for assistance O One AT GS900 16 or AT GS900 24 Fanless Gigabit Ethernet switch Two rackmounting brackets Eight flathead Phillips screws Four 10 32 Phillips screws with a nylon washer Four self adhesive rubber feet AC power cord OdQ0Q0a00 0 Documentation CD 26 AT GS900 16 AT GS900 24 Fanless Gigabit Ethernet Switches Installation Guide Installing the Switch on a Table or Desktop To install the switch on a table or desktop perform the following procedure 1 Remove all the items from the packaging and store the packaging material in a safe place In the event a problem occurs and you need to return the unit please use as m
5. information on how to troubleshoot the switch in the event that a problem occurs Note If you are still unable to resolve the problem after following the instructions in this chapter contact ATI Technical Support for assistance Refer to Contacting Allied Telesis on page 10 Check the POWER LED on the front of the switch If the LED is OFF indicating that the unit is not receiving power do the following m Ensure that the power cord is securely connected to the power source and to the AC connector on the back panel of the switch Verify that the power outlet has power by connecting another device to it Connect the unit to another power source Use a different power cord Verify that the voltage from the power source is within the required levels for your region Verify that the SPD LINK ACT LED for each port is ON If a SPD LINK ACT LED is OFF do the following m m Verify that the end node connected to the port is powered ON and is operating properly Verify that the twisted pair cable is securely connected to the port on the switch and to the port on the end node Ensure that the twisted pair cable does not exceed 100 meters 328 feet Verify that you are using the appropriate category of twisted pair cable Category 3 or better for 10 Mbps operation and Category 5 and Category 5E for 100 and 1000 Mbps operation Note A 1000Base connection can take from five to ten seconds for the link
6. to be established 37 Appendix A Technical Specifications Physical Specifications Dimensions WxDxH AT GS900 16 330 mm x 230 5 mm x 43 mm 13 0 in x 9 07 in x 1 7 in AT GS900 24 330 mm x 230 5 mm x 43 mm 13 0 in x 9 07 in x 1 7 in Weight AT GS900 16 2 38 kg 5 25 Ibs AT GS900 24 2 99 kg 6 60 Ibs Environmental Specifications Operating Temperature 0 Cto 40 C 32 F to 104 F Storage Temperature 25 C to 70 C 13 F to 158 F Operating Humidity 5 to 90 non condensing Storage Humidity 5 to 95 non condensing Operating Altitude Range Up to 10 000 feet 3 048 meters Power Specifications Power Consumption AT GS900 16 15 3 watts maximum AT GS900 24 20 1 watts maximum AC Input Electrical Ratings 100 240V AC 1A Frequency 50 60 Hz 38 AT GS900 16 AT GS900 24 Fanless Gigabit Ethernet Switches Installation Guide Safety and Electromagnetic Emissions Certifications EMI FCC Class A CISPR 22 Class A EN55022 Class A C TICK Immunity EN55024 Safety UL 60950 cULys EN60950 1 TUV Quality and Reliability AT GS900 16 MTBF 280 000 hours AT GS900 24 MTBF 230 000 hours Compliance Standards IEEE 802 3 10Base T IEEE 802 3u 100Base TX IEEE 802 3ab 1000Base TX Gigabit Ethernet IEEE 802 3z Full Duplex IEEE 802 3u Auto Negotiation IEEE 802 3x Flow Control Symmetric and Asymmetric RJ 45 Twisted Pair Port Connectors This se
7. 0 Mbps They are IEEE 802 3u compliant and use Auto Negotiation to set the duplex mode setting for you automatically An AT GS900 16 or AT GS900 24 switch uses store and forward as the method for receiving and transmitting frames When a Ethernet frame is received on a switch port the switch does not retransmit the frame from the destination port until it has received the entire frame and stored the frame in a port buffer It then examines the frame to determine if it is a valid frame Invalid frames such as fragments or runts are discarded by the switch This process insures that only valid frames are transmitted from the switch ports and that damaged frames are not propagated on your network To maintain the orderly movement of data between the end nodes an Ethernet switch may periodically need to signal an end node to stop sending data This can occur under several circumstances For example if two end nodes are operating at different speeds the switch while transferring data between the end nodes might need to instruct the faster end node to stop transmitting data to allow the slower end node to catch up An example of this would be when a server operating at 100 Mbps is sending data to a workstation operating at only 10 Mbps How a switch signals an end node to stop transmitting data differs depending on the duplex mode of the end node and switch port A twisted pair port operating in half duplex mode stops an end node from transmittin
8. 2 Warning Power cord is used as a disconnection device To de energize equipment disconnect the power cord 2 E3 Warning Class Equipment This equipment must be earthed The power plug must be connected to a properly wired earth ground socket outlet An improperly wired socket outlet could place hazardous voltages on accessible metal parts 4 7 E4 Pluggable Equipment The socket outlet shall be installed near the equipment and shall be easily accessible 4 1 E5 Caution Air vents must not be blocked and must have free access to the room ambient air for cooling 4 7 E6 Warning Operating Temperature This product is designed for a maximum ambient temperature of 40 degrees C 4 E7 All Countries Install product in accordance with local and National Electrical Codes 2 E8 23 Chapter 2 Installation Selecting a Site for the Switch Observe the following requirements when choosing a site for your switch o QOQQ0Q0 0 If you plan to install the switch in an equipment rack ensure that the rack is safely secured and that it will not tip over Devices in a rack should be installed starting at the bottom with the heavier devices near the bottom of the rack If you are installing the switch on a table ensure that the table is level and secure The power outlet for the switch should be located near the unit and should be easily accessible The site should provide for eas
9. Fanless Gigabit Ethernet Switches AT GS900 16 AT GS900 24 Installation Guide 613 000891 Rev A ODOC E Copyright 2007 Allied Telesis Inc All rights reserved No part of this publication may be reproduced without prior written permission from Allied Telesis Inc Microsoft and Internet Explorer are registered trademarks of Microsoft Corporation Netscape Navigator is a registered trademark of Netscape Communications Corporation All other product names company names logos or other designations mentioned herein are trademarks or registered trademarks of their respective owners Allied Telesis Inc reserves the right to make changes in specifications and other information contained in this document without prior written notice The information provided herein is subject to change without notice In no event shall Allied Telesis Inc be liable for any incidental special indirect or consequential damages whatsoever including but not limited to lost profits arising out of or related to this manual or the information contained herein even if Allied Telesis Inc has been advised of known or should have known the possibility of such damages Electrical Safety and Emissions Standards This product meets the following standards U S Federal Communications Commission Radiated Energy Note This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of FCC Rules T
10. an request technical support online by accessing the Allied Telesis Knowledge Base from the following web site www alliedtelesis com support You can use the Knowledge Base to submit questions to our technical support staff and review answers to previously asked questions For Technical Support via email or telephone refer to the Allied Telesis web site www alliedtelesis com Select your country from the list displayed on the website Then select the appropriate menu tab Products for return or repair must first be assigned a Return Materials Authorization RMA number A product sent to Allied Telesis without a RMA number will be returned to the sender at the sender s expense To obtain an RMA number contact the Allied Telesis Technical Support group at our web site www alliedtelesis com support rma Select your country from the list displayed on the website Then select the appropriate menu tab You can contact Allied Telesis for sales or corporate information at our web site www alliedtelesis com Select your country from the list displayed on the website Then select the appropriate menu tab The AT GS900 16 and AT GS900 24 switches have a lifetime warranty two years for the power supply Go to www alliedtelesis com warranty for the specific terms and conditions of the warranty and for warranty registration AT GS900 16 AT GS900 24 Fanless Gigabit Ethernet Switches Installation Guide Management Software Updates New relea
11. bps 100 Mbps or 1000 Mbps AT GS900 16 Fanless Gigabit Ethernet Switch ATiz Nied Telesis t Ethernet 1280 gem HA 38 ig ie a Legend X 10 Mbps HA 100 Mbps A le 1000 Mbps fr a a Figure 4 Power Workgroup Topology 20 Collapsed Backbone AT GS900 16 AT GS900 24 Fanless Gigabit Ethernet Switches Installation Guide In the topology illustrated in Figure 5 an AT GS900 16 switch connects Fast Ethernet switches that have Gigabit Ethernet uplinks This type of topology is often referred to as a collapsed backbone topology The switch functions as the focal point of the network and transfers an Ethernet frame between the Fast Ethernet switches only when the destination end node for the frame is on a different switch than the end node that originated the frame This reduces the amount of unnecessary data traffic in each workgroup freeing up bandwidth and improving network performance AT GS900 16 Fanless Gigabit Ethernet Switch MW Alied Telesis o AT GS900 16 Fono0Ad0DBasecT Pans lee gabi Earnet Swen 1281 Fast Ethernet Switches with Gigabit Uplinks Legend 10 Mbps Ss 100 Mbps 1000 Mbps Figure 5 Collapsed Backbone Hub Topology 21 Chapter 2 Installation This chapter contains the following sections Reviewing Safety Precautions on page 23 S
12. ction lists the connectors and connector pinouts for the AT GS900 16 and AT GS900 24 Fanless Gigabit Ethernet Switches and their components Figure 14 illustrates the pin layout to an RJ 45 connector and port Figure 14 RJ 45 Connector and Port Pin Layout 39 Appendix A Technical Specifications Table 4 lists the RJ 45 pin signals when a twisted pair port is operating in the MDI configuration Table 4 MDI Pin Signals 10Base T or 100Base TX Pin Signal 1 TX 2 TX 3 RX 6 RX Table 5 lists the RJ 45 port pin signals when a twisted pair port is operating in the MDI X configuration Table 5 MDI X Pin Signals 10Base T or 100Base TX Pin Signal 1 RX 2 RX 3 TX 6 TX Table 6 lists the RJ 45 connector pins and their signals when a 1000Base T port is operating at 1000 Mbps Table 6 RJ 45 1000Base T Connector Pinouts Pin Pair Signal 1 1 TX and RX 2 1 TX and RX 3 2 TX and RX 4 3 TX and RX 5 3 TX and RX 6 2 TX and RX 7 4 TX and RX 8 4 TX and RX a Bi directional data on each pair 40
13. d ON and operating normally OFF The switch has no power SPD LINK Solid Green A valid 1000 Mbps link is established on ACT the port Solid A valid 10 or 100 Mbps link is Orange established on the port Blinking A 1000 Mbps packet transmission and Green reception is in process on the port Blinking A 10 100 Mbps packet transmission and Orange reception is in process on the port OFF No link is established on the port FDX HDX Solid Green A full duplex link is established on the port OFF A half duplex link is established on the port AC Power Both the AT GS900 16 and AT GS900 24 switches have a single AC Connector Power supply socket on the back panel which has auto switch AC inputs See Figure 2 on page 14 for an illustration of the back panels For the input voltage range refer to Appendix A Technical Specifications on page 38 To power ON or OFF the switch you connect or disconnect the power cord Chapter 1 Product Description Ethernet Switching Basics MAC Address Table An Ethernet switch interconnects network devices such as workstations printers routers and other Ethernet switches so that they can communicate with each other by sending and receiving Ethernet frames Every hardware device on your network has a unique MAC address This address is assigned to the device by the device s manufacturer For example when you install a Network Interface Card NIC in a computer so that you can co
14. e switch floods the packet only to those ports which belong to the same VLAN as the port on which the packet was received This prevents packets from being forwarded into inappropriate LAN segments increasing network security When the destination end node responds the switch adds its MAC address and port number to the table If the switch receives a packet with a destination address that is on the same port on which the packet was received it discards the packet without forwarding it on to any port Since both the source end node and the destination end node for the packet are located on the same port on the switch there is no reason for the switch to forward the packet Duplex Mode Store and Forward Backpressure and Flow Control AT GS900 16 AT GS900 24 Fanless Gigabit Ethernet Switches Installation Guide Duplex mode refers to how an end node receives and transmits data If an end node can either receive or transmit data but not both simultaneously the end node is operating in what is referred to as half duplex mode If an end node can both receive and transmit data simultaneously the end node is said to be operating in full duplex mode Naturally an end node capable of operating in full duplex can handle data much faster than an end node that can only operate in half duplex mode The twisted pair ports on the AT GS900 16 and AT GS900 24 switches can operate in half or full duplex mode for 10 100 Mbps and full duplex for 100
15. e the user may be required to take adequate measures Immunity EN55024 Electrical Safety EN60950 1 TUV UL 60950 ULys Translated Safety Statements Important The indicates that a translation of the safety statements is available in a PDF document titled Translated Safety Statements 613 000405 which is posted on the Allied Telesis website at www alliedtelesis com This document is also included with the documentation CD that is shipped with the product Contents Preface iii ica 7 Safety Symbols Used in this DocuUMeNt oicoccionncinnnicnnn cri 8 Where toFind Web based Guides iii idilia 9 Contacting Allied Tales asii 10 Online SUpport rraian tee rt rt tdt 10 Email and Telephone Support A A td 10 Returning Products cc 10 For Sales or Corporate Information ii2 c c 5 ose eesscadecentdebececeukecote deco edoecununsnedvantensanedagurdeetauandedsoebanethesecatdnsucdeevadanescectedsdee 10 Wa aid 10 Management Software Updates sanrio ie ici 11 Ghapter 1 Product Description sicario ts 12 SO A A eate A A O NO Components Hardware Feature DeSCription ccccececeececeeeee eee eeeeeeeenae cee eesaaece ee saaaeeeceecaaaaeeeeeesaaaeeeeeeseaeaeseeseaeeeseeseqaeeessaeenaeeeeeeeees 15 Twisted Pair Ports ita O eels iii 15 UES sha se ete A ai 16 AG Power COnme Ctor iii ias 17 Ethernet SwitChing BASICS EE EE te ccades ce a TT EE Arpa 18 MAG Address Table az 2 0coccccevseeds liste ck sgecvbecerd gu
16. e twisted pair ports When connecting a twisted pair cable to a port observe the following guidelines o An RJ 45 connector should fit snugly into the port on the switch The tab on the connector should lock the connector into place O Check that you are using the appropriate type of twisted pair cabling Refer to Twisted Pair Cabling and Distances on page 25 for twisted pair cable specifications O Since the twisted pair port when operating in Auto Negotiation is Auto MDI MDI X you can use either a straight through or crossover twisted pair cable to connect any type of network device to a port on the switch If you disable Auto Negotiation on the port the port defaults to MDI X 30 AT GS900 16 AT GS900 24 Fanless Gigabit Ethernet Switches Installation Guide 5 Apply power to the switch by plugging the AC DC power adapter into an AC power outlet the plug the DC connector to the power receptacle of the switch Warning The power cord is used as a disconnection device To de energize equipment disconnect the power cord a E3 6 Verify that the POWER LED is green If the LED is OFF refer to Troubleshooting on page 37 for instructions Note The switch perform a self diagnostic test upon power up This takes about 20 seconds to complete 7 Power ON the end nodes connected to the switch 8 Check that all the SPD LINK ACT LEDs are green If any of the LEDs are OFF refer to Troubleshooting
17. electing a Site for the Switch on page 24 Planning the Installation on page 25 Unpacking the Switch on page 26 Installing the Switch on a Table or Desktop on page 27 Installing the Switch on a Wall on page 29 Installing the Switch in a Rack on page 32 Cabling the Switch on page 35 Oagaaqgodadgada a Powering On the Switch on page 36 22 AT GS900 16 AT GS900 24 Fanless Gigabit Ethernet Switches Installation Guide Reviewing Safety Precautions Please review the following safety precautions before you begin to install the switch or any of its components Refer to the Translated Safety Statements document for translated safety statements in your language The amp indicates that a translation of the safety statement is available in a PDF document titled Translated Safety Statements 613 000405 on the Allied Telesis website at www alliedtelesis com This document is also included with the documentation CD that is shipped with the product A Warning To prevent electric shock do not remove the cover No user serviceable parts inside This unit contains hazardous voltages and should only be opened by a trained and qualified technician To avoid the possibility of electric shock disconnect electric power to the product before connecting or disconnecting the LAN cables 2 E1 Warning Do not work on equipment or cables during periods of lightning activity 41 E
18. g data by forcing a collision A collision on an Ethernet network occurs when two end nodes attempt to transmit data using the same data link at the same time A collision causes an end node to stop sending data wait for a brief period of time and then retransmit the same data Once the switch is ready to receive data again the switch stops forcing collisions This is referred to as backpressure A port operating in full duplex mode uses PAUSE frames as specified in the IEEE 802 3x standard to stop the transmission of data from an end node Whenever the switch wants an end node to stop transmitting data it issues this frame The frame instructs the end node to cease transmission for a period of time specified within the frame The switch continues to issue PAUSE frames until it is ready again to receive data from the end node This is referred to as flow control Chapter 1 Product Description Network Topologies This section illustrates two network topologies that you can create with the AT GS900 16 and AT GS900 24 switches a power workgroup and collapsed backbone Both types of topologies are described below Power The topology shown in Figure 4 is commonly referred to as a power workgroup topology Each workstation or end node is connected directly Workgroup T l to a port on the switch Each end node has a dedicated data link to the Opology switch for best performance and reliability The devices can operate at speeds of 10 M
19. hese limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with this instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense Note Modifications or changes not expressly approved of by the manufacturer or the FCC can void your right to operate this equipment Industry Canada This Class A digital apparatus complies with Canadian ICES 003 Cet appareil num rique de la classe A est conforme a la norme NMB 003 du Canada European Union Restriction of the Use of Certain Hazardous Substances RoHS in Electrical and Electronic Equipment This Allied Telesis ROHS compliant product conforms to the European Union Restriction of the Use of Certain Hazardous Substances RoHS in Electrical and Electronic Equipment Allied Telesis ensures RoHS conformance by requiring supplier Declarations of Conformity monitoring incoming materials and maintaining manufacturing process controls RFI Emissions FCC Class A CISPR 22 Class A EN55022 Class A C TICK Warning In a domestic environment this product may cause radio interference in which cas
20. n the end nodes For more information refer to Powering On the Switch on page 36 When connecting a twisted pair cable to a port observe the following guidelines O An RJ 45 connector should fit snugly into the port on the switch The tab on the connector should lock the connector into place O The ports on the switch are auto MDI MDI X You can use either a straight through or crossover twisted pair cable to connect any type of network device to a port on the switch O The network should not contain data loops which can adversely affect network performance A data loop exists when two or more network devices can communicate with each other over more than one data path 35 Chapter 2 Installation Powering On the Switch To apply power to the AT GS900 16 and AT GS900 24 switches perform the following procedure 1 Apply AC power to the switch by plugging the power cord into the AC power connector on the back panel of the unit as illustrated in Figure 13 AN Warning Power cord is used as a disconnection device To de energize equipment disconnect the power cord a E3 Stova Figure 13 Connecting the AC Power Connector to Switch 2 Plug the other end or the power cord into a wall outlet 3 Verify that the POWER LED is green If the LED is OFF refer to Troubleshooting on page 37 The switch is ready for network operations 36 Chapter 3 Troubleshooting This chapter contains
21. nnect it to the network the NIC already has a MAC address assigned to it by its manufacturer Both the AT GS900 16 and AT GS900 24 Fanless Gigabit Ethernet switches can contain up to 8 000 entries on their MAC address tables The switch uses the table to store the MAC addresses of the network end nodes connected to the ports along with the port number on which each address was learned A switch learns the MAC addresses of the end nodes by examining the source address of each packet received on a port It adds the address and port on which the packet was received from the MAC table if the address has not already been entered in the table The result is a table that contains all the MAC addresses of the devices that are connected to the switch s ports and the port number where each address was learned When the switch receives a packet it also examines the destination address and by referring to its MAC address table determines the port on which the destination end node is connected It then forwards the packet to the appropriate port and to the end node This increases network bandwidth by limiting each frame to the appropriate port when the intended end node is located freeing the other switch ports for receiving and transmitting data If the switch receives a packet with a destination address that is not in the MAC address table it floods the packet to all the ports on the switch If the ports have been grouped into virtual LANs th
22. on page 37 for instructions The switch is now ready for use 31 Chapter 2 Installation Installing the Switch in a Rack Perform the following procedure to install the switch in a standard 19 inch rack If you are not installing the switch in a rack go to the next procedure 1 Place the unit upside down on a level secure surface 2 Using a flat head screwdriver remove the self adhesive rubber feet from the bottom of the switch as shown in Figure 9 Figure 9 Removing the Feet 3 Turn the switch over 4 Attach the two rackmounting brackets provided to the sides of the switch using the eight flathead Phillips screws provided as illustrated in Figure 10 Figure 10 Attaching Rackmounting Brackets 32 AT GS900 16 AT GS900 24 Fanless Gigabit Ethernet Switches Installation Guide Mount the switch in the 19 inch rack using the 10 32 Phillips screws which are shipped with the product as illustrated in Figure 11 Figure 11 Rackmounting the Switch Connected the twisted pair cables to the twisted pair ports When connecting a twisted pair cable to a port observe the following guidelines O An RJ 45 connector should fit snugly into the port on the switch The tab on the connector should lock the connector into place O Check that you are using the appropriate type of twisted pair cabling Refer to Twisted Pair Cabling and Distances on page 25 for twisted pair cable specifications
23. ord a E3 6 Verify that the POWER LED is green If the LED is OFF refer to Troubleshooting on page 37 for instructions Note The switch perform a self diagnostic test upon power up This takes about 20 seconds to complete 7 Power ON the end nodes connected to the switch 8 Check that all the SPD LINK ACT LEDs are green If any of the LEDs are OFF refer to Troubleshooting on page 37 for instructions The switch is now ready for use 28 AT GS900 16 AT GS900 24 Fanless Gigabit Ethernet Switches Installation Guide Installing the Switch on a Wall To install the switch on a wall perform the following procedure 1 Remove all the items from the packaging and store the packaging material in a safe place In the event a problem occurs and you need to return the unit please use as much of the original shipping material as possible 2 Attach the two rackmounting brackets provided to the sides of the switch using the eight flathead Phillips screws provided as illustrated in Figure 7 e x wa gt Ta Y 1302 JM Figure 7 Attaching the brackets to the sides of the switch 29 Chapter 2 Installation 3 Place the switch on the wall Then mount the switch using the 10 32 Phillips screws which are shipped with the product See Figure 8 1303 Figure 8 Attaching the switch to the wall 4 Connected the twisted pair cables to th
24. orm control Supports 128K byte packet buffer with a packet length of up to 1522 bytes Supports two way dynamic address learning for 8K MAC addresses Supports Jumbo frames of up to 10K bytes MAC address aging 300 seconds Non blocking full wire speed Four priority queus per port Internal power supply Fanless design q09aagqaadadlo IEEE 802 3 10Base T IEEE 802 3 CSMA CD IEEE 802 3u 100Base TX IEEE 802 3ab 1000Base TX Gigabit Ethernet IEEE 802 3z Full Duplex IEEE 802 3u Auto Negotiation IEEE 802 3x Flow Control Symmetric and Asymmetric Chapter 1 Product Description Components Figure 1 illustrates the front panels of the AT GS900 16 and AT GS900 24 switches AT GS900 16 SN a Telesis System Port LEDS 16 10 100 1000Base Twisted Pair Ports AT GS900 24 MVE Allied Telesis x 7 F 7 T T AT GS900 24 roca ae 888 4888 D n a System Port LEDS 24 10 100 1000Base Twisted Pair Ports Figure 1 Front Panels Figure 2 illustrates the back panels of the AT GS900 16 and AT GS900 24 switches AT GS900 16 602 AC Power Connector AT GS900 24 o 100 240 VAC 603 AC Power Connector Figure 2 Back Panels 14 AT GS900 16 AT GS900 24 Fanless Gigabit Ethernet Switches Installation Guide Hardware Feature Description Twisted Pair Ports
25. rmation refer to Duplex Mode on page 19 Chapter 1 Product Description LEDs Maximum Distance Each twisted pair port has a maximum operating distance of 100 m 328 feet Type of Cabling For 10 Mbps operation Category 3 or better 100 ohm shielded or unshielded twisted pair cabling is required For 100 or 1000 Mbps operation Category 5 and Enhanced Category 5 5E 100 ohm shielded or unshielded twisted pair cabling is required Auto MDI MDI X All of the twisted pair ports on the switch are auto MDI and IEEE 802 3ab compatible When a port s speed and duplex mode are set through Auto Negotiation the port uses the auto MDI feature to automatically configure itself as MDI or MDI X when connected to an end node Consequently you can use either a straight through or crossover twisted pair cable when connecting any network device to a port The system and port LEDs on the front panel of the AT GS900 16 and AT GS900 24 switches display the switch and its port status information See Figure 3 Each port has two LEDs AT GS900 16 esis 607 AT GS900 24 SPD LINK ACT Figure 3 Port LEDs 16 AT GS900 16 AT GS900 24 Fanless Gigabit Ethernet Switches Installation Guide Table 2 describes the system and port LEDs on the AT GS900 16 and AT GS900 24 switches Table 2 System and Port LEDs LED State Description POWER Green The switch is powere
26. ses of management software for our managed products are available from either of the following Internet sites O Allied Telesis web site www alliedtelesis com O Allied Telesis FTP server ftp ftp alliedtelesis com If you prefer to download new software from the Allied Telesis FTP server from your workstation s command prompt you will need FTP client software and you must log in to the server Enter anonymous for the user name and your email address for the password Chapter 1 Product Description The AT GS900 16 and AT GS900 24 switches are unmanaged Layer 2 Fanless Gigabit Ethernet switches designed to simplify the task of creating or expanding an Ethernet Fast Ethernet or Gigabit Ethernet network This chapter contains the follows sections Features on page 13 Components on page 14 Hardware Feature Description on page 15 Ethernet Switching Basics on page 18 OQ 000 Network Topologies on page 20 Features AT GS900 16 AT GS900 24 Fanless Gigabit Ethernet Switches Installation Guide Standards AT GS900 16 and AT GS900 24 Fanless Gigabit Ethernet switches features include OQ 0Q00 0 QO a q9oaoaaadcoaso 16 or 24 RJ 45 10 100 1000 Mbps twisted pair ports System and port LEDs Auto MDI MDI X Auto Negotiation 10 100 1000 Mbps full or half duplex Back pressure and flow control at half duplex and IEEE 802 3x flow control at full duplex Broadcast st
27. tea idan dai 18 Duplex Mode niinn e hil elidel A ety 19 Store and Fo Wald scsi mada dile didnt 19 Backpress te and FI W Control dantesedge ces deeunuludedsdeededeveoeddaeeeloedeadeedsddneevece 19 Network Topologies viiaititi A A in 20 Power Workgroup Topol gy sirrinin adie ieee ered tee neve teed We nee ies eine een a 20 Collapsed Backbone irtciosiarea tae cee 21 Chapter 2 Installation 22 22 0 di e tae di dl ros lo de e a did de 22 Reviewing satety PrecautiONS cecilia id tdt da dc 23 Selecting a Site Tor the Mit Asi 24 Planning the Install athonn cid is 25 Un packing the Switi essere ny aen eel A ee vie Miele 26 Installing the Switch on a Table or D SKtOD eee ee eeeeeeeeeeeennee teeter eee cnn nan n nano nn nn nn 27 Installing the Switch On A Wallinin iine A id 29 Installing the Switch tna RACK iirin deg cesadccegvenecesat A a tia 32 Cabling the Witch boca ide 35 Powering On The With A aadeusades T 36 Chapter 3 Troubleshooting ninsi a Osetia 37 Appendix A Technical Specifications ccc cece cee cecec ce cee ee eec ae cece ceca eee seen ceaaeaeeeeseaaeaeeeeseseeaeeeesesecaeeeeeeseeeuaeeeeeeseea 38 Physical SpecifiCatONS cit A A hii Rein 38 Environmental SpecificatiONS xioi st tavele N aE T E a nA AAA E aeaa E EAE EAEE TEA nai aaaea rania 38 POWER OPECITICAONS 00 A rta 38 Safety and Electromagnetic Emissions CertificatiONS o on oonnnnnccnncnnnnnncnnoncccnncnannncccnnnr rn rro norris 39
28. uch of the original shipping material as possible Attach the four self adhesive rubber feet to the bottom of the switch as shown in Figure 6 1 1 _ pa LALL EEEE 98050050 sting Leveson over 91 006SD LV 5152 21 paly a 606 Figure 6 Attaching the Rubber Feet Place the switch on a flat and secure surface leaving ample space around the switch for ventilation Connected the twisted pair cables to the twisted pair ports When connecting a twisted pair cable to a port observe the following guidelines O An RJ 45 connector should fit snugly into the port on the switch The tab on the connector should lock the connector into place O Check that you are using the appropriate type of twisted pair cabling Refer to Twisted Pair Cabling and Distances on page 25 for twisted pair cable specifications O Since the twisted pair port when operating in Auto Negotiation is Auto MDI MDI X you can use either a straight through or crossover twisted pair cable to connect any type of network device to a port on the switch If you disable Auto Negotiation on the port the port defaults to MDI X Apply power to the switch by plugging the AC DC power adapter into an AC power outlet the plug the DC connector to the power receptacle of the switch 27 Chapter 2 Installation AN Warning The power cord is used as a disconnection device To de energize equipment disconnect the power c
29. y access to the ports on the front of the switch This will make it easy for you to connect and disconnect cables as well as view the switch s LEDs To allow proper cooling of the switch air flow around the unit and through its vents on the side and rear should not be restricted Do not place objects on top of the switch Do not expose the switch to moisture or water Ensure that the site is a dust free environment You should use dedicated power circuits or power conditioners to supply reliable electrical power to the network devices 24 AT GS900 16 AT GS900 24 Fanless Gigabit Ethernet Switches Installation Guide Planning the Installation Table 3 contains the cabling specifications for the twisted pair ports Table 3 Twisted Pair Cabling and Distances Maximum Speed Type of Cable Operating Distance 10 Mbps Category 3 or better 100 ohm 100 m 328 ft shielded or unshielded twisted pair cable 100 Mbps Category 5 or Category 5E 100 m 328 ft Enhanced 100 ohm shielded or unshielded twisted pair cable 1000 Mbps Category 5 and Category 5E 100 m 328 ft Enhanced 100 ohm shielded or unshielded twisted pair cable Note The twisted pair ports on the switch feature Auto MDI when operating at either 10 100 or 1000 Mbps Each port is individually configured as MDI or MDI X when connected to an end node Consequently you can use either a straight through or crossover twisted pair cable when
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