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Allied Telesis AT-GS900/8PS - page 1
PN 613-001687 Rev. A AT-GS900/8PS Gigabit Ethernet POE+ Switch AT-GS900/8PS Installation Guide ...
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Allied Telesis AT-GS900/8PS - page 2
Copyright © 2012 Allied Telesis, Inc. All rights reserved. No part of this publicati on may be repr o duced without prior w ritten permission from Al lied Telesis, Inc. Allied Telesis and the Allied Telesis logo are trademarks of Allied Telesis, Incorp orated. All other product names, company names, logos or oth er designations ment ioned herein a ...
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Allied Telesis AT-GS900/8PS - page 3
3 Electrical Safety and Emissions S tandards This product meets the following standards. RFI Emissions FCC Part 15 Class A CISPR 22 Class A EN55022:2006/A:2007 Class A Immunity EN55024 Electrical Safety EN60950 (TUV) T-Mark UL 60950 ( C UL US ) C-TICK CE Environmenta l Compliance EU-RoHS compliant WEEE China RoHS compliant U.S. Federal Communicatio ...
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Allied Telesis AT-GS900/8PS - page 4
4 T ranslated Safety S tatements Important: The indicates that a translation of th e safety statement is available in a PDF document titled “Translated Safety State ment s” posted on the Allied Telesis website at www.alliedtelesis.com. ...
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Allied Telesis AT-GS900/8PS - page 5
5 Preface .............. .............. ................. ................. ................. ................. .............. ................ . ..... ................. ................. .......... 11 Symbol Conventions .... .................... ................. ................ ................. ................. ................. . ............ ...
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Allied Telesis AT-GS900/8PS - page 6
Contents 6 Slow Network Performance ............ ... ................. ................. ................. .............. ................ ....... ..... ................. ..............49 LINK/ACT LED Inter mittently Blinking ................... ................. ................ .................... ................. .. . ................. ....... ...
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Allied Telesis AT-GS900/8PS - page 7
7 Figure 1. AT-GS900/8PS Front Panel ....................... ................. .................... ................. ............... ........................ ............. 18 Figure 2. Back Panel ................... ................ .................... ................. ................. ................ . .. ................. ................. . ...
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Allied Telesis AT-GS900/8PS - page 8
Figures 8 ...
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Allied Telesis AT-GS900/8PS - page 9
9 Table 1. Twisted Pair Cable Specif ications for the AT-GS900/8PS ................... ................. ................. ......... .. ................. .. 19 Table 2. System LED ............... ................. ................ ................. .................... ................. .... . ................. ................. ............. 22 Ta ...
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Tables 10 ...
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Allied Telesis AT-GS900/8PS - page 11
11 Pr eface This guide contains the installat ion instructions for the AT-GS900/8PS Gigabit Ethernet POE+ Switch. This preface contains the following sections: “Symbol Conventions” on p age 12 “Contacting Allie d T elesis” on p age 13 ...
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Allied Telesis AT-GS900/8PS - page 12
Preface 12 Symbol Conventions This document uses the following conventions: Note Notes provide additional informatio n. Caution Cautions inform you t hat performing or omitting a specific a ction may result in equipment damage or loss of data. Warning Warnings inform you that performing or omitting a sp ecific action may result in bodily injury. Wa ...
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Allied Telesis AT-GS900/8PS - page 13
AT-GS900/8PS Switch Installation Guide 13 Contacting Allied Telesis If you need assistance with this prod uct, you may contact Allied Telesis technical support by going to the Suppo rt & Services section of the Allied Telesis web site at www.alliedtelesis.com/support. You can find links for the following services on this page: 24/7 Online S ...
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Allied Telesis AT-GS900/8PS - page 14
Preface 14 ...
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Allied Telesis AT-GS900/8PS - page 15
15 Chapter 1 Overview This chapter describes the AT-GS900/8PS Layer 2 Giga bit Ethernet Switch. The sections in the chapter are. “Features” on page 16 “Front and Back Panels” on p age 18 “T wisted Pair Ports” on page 19 “SFP Port” on page 21 “LEDs” on page 22 “Power Over Ethernet” on page 25 “Po ...
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Allied Telesis AT-GS900/8PS - page 16
Chapter 1: Ove rview 16 Features Here are the hardware featu res of the AT-GS900/8PS Gigabit Ethernet Switch. General Supports 18 Gbps non-blockin g switch fabric Transparent to VLAN packets Support for jumbo frames up to 9216 bytes at 100% forwarding rate Twisted Pair Ports 8 ports 10Base-TX, 100Base-T and 1000Base-T compliant ...
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Allied Telesis AT-GS900/8PS - page 17
AT-GS900/8PS Switch Installation Guide 17 Power over Ethernet PoE and PoE+ supported on the 10 /100/1000Base-T ports 1 - 4 on the AT-GS900/8PS switch Supports powered device classes 0 through 4 Max power limit of 75 watts for the switch Max power limit of 30 watts per port Port prioritization Alternative A Mode Installation ...
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Allied Telesis AT-GS900/8PS - page 18
Chapter 1: Ove rview 18 Front and Back Panels Figure 1 illustrates the front panel of the AT-GS900/8 PS Gigabit Ethernet Switch. Figure 1. AT-GS900/8PS Front Panel The switch back panel is illustrated in Figure 2. Figure 2. Back Panel Port 10/100/1000Base-T Twisted Pair Ports AT-GS900/8 PoE Limit LEDs System LEDs PoE LEDs 1000M SFP Slot ...
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Allied Telesis AT-GS900/8PS - page 19
AT-GS900/8PS Switch Installation Guide 19 Twisted Pair Ports The AT-GS900/8PS Gigabit Ethernet Switch feature s 8 twisted pair ports, respectively, that are 10Base-T, 100Base-TX, and 1000Base-T compliant. The port speeds and duplex modes are determined automatically with IEEE 802.3u Auto-Negotiation. The ports have a maximum operating distance of 1 ...
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Allied Telesis AT-GS900/8PS - page 20
Chapter 1: Ove rview 20 Auto-Negotiation Mode Each AT-GS900/8PS switch port is configured for Auto-Negotiation mode which determines the speed and duplex mode. Each end-no de connected to a twisted-pair port should also be configured for Auto-Negotiation mode. This insures that the speed and duplex mode is matched on each end. Note If an end-node c ...
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Allied Telesis AT-GS900/8PS - page 21
AT-GS900/8PS Switch Installation Guide 21 SFP Port The AT-GS900/8PS features one SFP uplink port (Port 9). This port is capable of supporting one 1000SX/LX SFP module. Refer to the AT- GS900/8PS product data sheet for info rmat ion concerning the specific SFP models supported and fiber cable specifica tions. See “Contacting Allied Telesis” on p ...
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Allied Telesis AT-GS900/8PS - page 22
Chapter 1: Ove rview 22 LEDs The System, PoE, 10/100/1000Base-T and SFP LEDs are shown in Figure 3. Figure 3. AT-GS900/8PS LEDs Table 2 describes the system LED. Table 3 describes the Power over Ethernet (PoE) LEDs: T able 2. System LED LED St ate Description POWER Solid Green The input AC powe r is within the no rmal operating range. Off The switc ...
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Allied Telesis AT-GS900/8PS - page 23
AT-GS900/8PS Switch Installation Guide 23 Table 4 describes the LEDs for t he 10/100/1000Base-T ports. PoE Limit Solid Green T ota l PoE delivered power is between 7 0 W and 75 W (Guard Band). While in th is state, demand for PoE power to any additional PoE ports will be denied. Blinking Green The demand for Po E Power has exceeded the max PoE powe ...
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Allied Telesis AT-GS900/8PS - page 24
Chapter 1: Ove rview 24 Table 5 describes the LEDs for the SFP slot s. T able 5. SFP Slot LEDs LED St ate Description L/A (link/ activity) Solid Green The SFP transceiver has established a link with a network device, but is not transmitting or receiving network p ackets. Blinking Green The SFP transceiver is transmitting or receiving network packet ...
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Allied Telesis AT-GS900/8PS - page 25
AT-GS900/8PS Switch Installation Guide 25 Power Over Ethernet The AT-GS900/8PS switch features Power over Etherne t (PoE) only on ports 1 - 4. PoE is used to supply power to network devices over the same twisted pair cables that carry the network traffic. The main advantage of PoE is that it can make it ea sier to install a network. The selection o ...
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Allied Telesis AT-GS900/8PS - page 26
Chapter 1: Ove rview 26 PoE Powered Device Classes Powered devices are grou ped into the five classes listed in Table 6. The classes are based on the amount o f power the devices require. The switches support all five classes. PoE Power Budget The AT-GS900/8PS switch has a power budget of 75 watts. This is th e maximum amount of power the switch ca ...
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Allied Telesis AT-GS900/8PS - page 27
AT-GS900/8PS Switch Installation Guide 27 PoE Port Prioritization If the power requirements of t he powered devices exceed the switch’s power budget (75 W), the switch denie s power to one or more PoE ports based on a process called port prioritiza tion. The port priority is base d on the port number with the h ighest priority assigned to port 1 ...
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Allied Telesis AT-GS900/8PS - page 28
Chapter 1: Ove rview 28 Note To reset a blinking PoE port LED, see “Resetting Blinkin g PoE Port LED” on page 51. Note In addition, a blinking POE LED can indicat e that a PoE port has a short circuit. ...
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Allied Telesis AT-GS900/8PS - page 29
AT-GS900/8PS Switch Installation Guide 29 Wiring Implementation The IEEE 802.3af standard defines two methods by which a PSE, such as the switch, can transmit DC powe r over twisted pair cables to PDs. Th ese methods, known as Alternatives A and B, identify the wire strands the switch should use when sending DC power to a PD. The AT-GS900/8PS switc ...
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Allied Telesis AT-GS900/8PS - page 30
Chapter 1: Ove rview 30 Power Supply The switch has an internal power supply with a single AC power supply socket on the back panel and autoswitch AC inpu ts. To power the switch on or off, connect or disconnect the power cord pro vided with the switch. A power cord is supplied with the switch. Note For the power requirements, refer to the “Power ...
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Allied Telesis AT-GS900/8PS - page 31
31 Chapter 2 Installation This chapter contains the following sections: “Reviewing Safety Precautions” on p age 32 “Selecting a Site for the Switch” on p age 34 “Unpacking the Switch” on page 35 “Installing the Switch on a Desktop” on page 37 “Installing the Switch in an Equipment Rack” on p age 38 “Ins ...
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Allied Telesis AT-GS900/8PS - page 32
32 Reviewing Safety Precautions Please review the following safety pr ecautions before you begin to install the chassis or any of its components. Note The indicates that a tra nslation of the safety statement is available in a PDF document titled Tran slated Safety Statements. See “Contacting Allied Telesis” on page 13 Warning To prevent el ...
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Allied Telesis AT-GS900/8PS - page 33
AT-GS900/8PS Switch Installation Guide 33 Operating Temperature. This pr oduct is designed for a maximu m ambient temperature of 40° degrees C. E7 All Countries: Install product in accordance with loca l and National Electrical Codes. E8 Circuit Overloading: Consideratio n should be given to the connection of the equipment to the sup ply c ...
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Allied Telesis AT-GS900/8PS - page 34
Chapter 2: Inst allation 34 Selecting a Site for the Switch Observe the following requirements when choosing a site for your switch: If you plan to install the switch in an equipment rack, verify that the rack is safely secured and will not tip over. Devices in a rack should be installed starting at the bottom, with the heavier devices near the ...
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Allied Telesis AT-GS900/8PS - page 35
AT-GS900/8PS Switch Installation Guide 35 Unpacking the Switch To unpack the switch, perform the followin g procedure: 1. Remove all of the components from the shipping package. Note Store the packaging material in a safe location. You must use the original shipping material if you need t o return the unit to Allied Telesis. 2. Place the switch on ...
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Allied Telesis AT-GS900/8PS - page 36
Chapter 2: Inst allation 36 3. Verify that the shipping container in cludes the AT-GS900/8PS Switch and the items shown below in Figure 4. Figure 4. AT-GS900/8PS Switch It ems T wo equipment bracket s (for wall or rack installation ) Eight bracket screws (for wall or rack inst allation) Four wall anchors (for wall mount installation) Four screws an ...
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Allied Telesis AT-GS900/8PS - page 37
AT-GS900/8PS Switch Installation Guide 37 Installing the Switch o n a Desktop You may install the AT-GS900/8PS Switch on a desktop or in a standard 19-inch equipment rack. To install the switch in a rack, refer to “Installing the Switch in an Equipment Rack” o n page 38. To place the switch on a desktop, perform the f ollowing procedure: 1. Rem ...
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Allied Telesis AT-GS900/8PS - page 38
Chapter 2: Inst allation 38 Installing the Switch in an Equipment Rack To install the switch in a standard 19-inch equipment rack, perform the following procedure: 1. If the rubber feet are attached to the bo ttom of the switch, remove them using a flat-head screwdriver. 2. Attach the two rack mount brackets to the sides of the switch using the eig ...
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Allied Telesis AT-GS900/8PS - page 39
AT-GS900/8PS Switch Installation Guide 39 Figure 7. Mounting the Switch in an Equipme nt Rack 4. Go to “Installing Optional SFP Tra nsceiver” on page 43 or “Cabling the Switch” on page 45. ...
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Allied Telesis AT-GS900/8PS - page 40
Chapter 2: Inst allation 40 Installing the Switch on a Wall To install the switch on a wall, perform the following procedure: 1. Turn the switch over and place it on a table . 2. If the rubber feet are attached to the bo ttom of the switch, remove them using a flat-head screwdriver. 3. Orient the brackets against the si des of the switch as shown i ...
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Allied Telesis AT-GS900/8PS - page 41
AT-GS900/8PS Switch Installation Guide 41 Figure 9. Marking the Screw Hole Locations 5. Install the four plastic anchors included with the switch into the wall, at the locations marked in the previou s step. The anchors require 0.635 mm (0.25 in.) holes. 6. While another person holds the switch a t the wall location, secure it to the wall using the ...
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Allied Telesis AT-GS900/8PS - page 42
Chapter 2: Inst allation 42 Figure 10. Securing the Switch to the Wall 7. Go to “Installing Optional SFP Transceiver” on page 43 or “Cabling the Switch” on page 45. ...
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Allied Telesis AT-GS900/8PS - page 43
AT-GS900/8PS Switch Installation Guide 43 Installing Optional SFP Transceiver To install an SFP transceive r, perform the following procedure: Note You should always install the trans ceiver before connecting the fiber optic cables to it. Note The transceiver can be hot-swapped; you do not need to power off the switch to install a transceiver. Ho w ...
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Allied Telesis AT-GS900/8PS - page 44
Chapter 2: Inst allation 44 4. With the handle on the transceiver oriented towards the top of the switch, slide the transceiver into the SF P slot until it clicks int o place. See Figure 12 Figure 12. Inserting the SFP 5. Verify that the handle on the tra nsc eiver is in the upright position or oriented towards the top of the switch . This secures ...
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Allied Telesis AT-GS900/8PS - page 45
AT-GS900/8PS Switch Installation Guide 45 Cabling the Switch Observe the following guidelines when connecting twisted pair and fiber optic cables to the ports on the switch: The cable specifications for the twisted pair po rts are given in Table 1 on page 19 Refer to the cable specifications are included in the SFP module data sheet for the ...
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Allied Telesis AT-GS900/8PS - page 46
Chapter 2: Inst allation 46 Powering On the Switch To power on the switch, perform the following procedure: 1. Plug the power cord into the AC power connector on the back of the switch, as shown in Figure 13. Figure 13. Plugging in th e AC Power Cord 2. Plug the other end of the powe r cord into a wall outlet. 3. Verify that the POWER LED is green. ...
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Allied Telesis AT-GS900/8PS - page 47
AT-GS900/8PS Switch Installation Guide 47 Chapter 3 T r oubleshooting This chapter contains information o n how to troubleshoot the switch if a problem occurs. The following problems are addre ssed: “Power LED OFF” “T wisted Pair Port LINK/ACT LED Of f” “SFP Port LINK/ACT LED Off” o n page 48 “Slow Network Performance? ...
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Allied Telesis AT-GS900/8PS - page 48
Chapter 3: Tro ubleshooting 48 the following: Verify that the network device con nect ed to the twisted pair port is powered on and is operating properly. Verify that the twisted pair cable is secu rely connected to the switch port and to the port on the remote net work device. Verify that the port is connected to the correct twisted pa ...
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Allied Telesis AT-GS900/8PS - page 49
AT-GS900/8PS Switch Installation Guide 49 a different cable. If the po rt is able to establish a link, then the problem is with the cable or with the other n etwork device. If the remote network device is a manage d device, use its management firmware to determine wheth er its port is enabled. Test the attenuation on the fiber optic cable w ...
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Allied Telesis AT-GS900/8PS - page 50
Chapter 3: Tro ubleshooting 50 Powered Device Not Receiving Power Problem: Port’s PoE LED is OFF Solutions: If a powered device (PD) is not receiving power from the AT-GS900/8PS switch and the port’s PoE LED is off, do the following: Verify that the AT-GS900/8PS is has AC power and the Power LED is on. Verify that the port’s link L/A ...
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Allied Telesis AT-GS900/8PS - page 51
AT-GS900/8PS Switch Installation Guide 51 Resetting Blinking PoE Port LED To reset a blinking PoE port LED, perform the following steps: 1. Turn the switch power off by disconne cting the AC power cord. 2. If the total PoE power from all th e powered devices connected to the switch is greater than 70 W, redu ce the total PoE load until it is less t ...
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Allied Telesis AT-GS900/8PS - page 52
Chapter 3: Tro ubleshooting 52 ...
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Allied Telesis AT-GS900/8PS - page 53
AT-GS900/8PS Switch Installation Guide 53 Appendix A T echnical Specifications The following specifications are for the AT-GS950/8 Gigabit Ethernet PoE switch. Physical Specifications Environmental Specifications Power Specifications T able 7. Physical S pecifications Dimensions (H x W x D) 280 mm x 180 mm x 4 4 mm (11.0 in x 7.1 in x 1.7 in) Weigh ...
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Allied Telesis AT-GS900/8PS - page 54
Appendix A: Technica l Specification s 54 PoE Specifications Note For an explanation of these PoE specificat ions, see “Power Over Ethernet” on page 25. Safety and Electromagnetic Emissions Certifications T able 10. PoE S pecifications Ports Ports 1, 2, 3, 4 Port Priority: Port 1 (Highest) and Port 4 (Lowest) Standard Supports both IEEE 802.3at ...
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Allied Telesis AT-GS900/8PS - page 55
AT-GS900/8PS Switch Installation Guide 55 Connectors and Port Pinouts This section lists the connectors an d connector pinouts. Figure 14 illustrates the pin lay out for an RJ-45 connector an d port. Figure 14. RJ-45 Connector and Port Pin L ayout Table 12 lists the RJ-45 pin signals when a twisted pair port is operating in the MDI configuration. T ...
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Allied Telesis AT-GS900/8PS - page 56
Appendix A: Technica l Specification s 56 Table 14 lists the RJ-45 connector pins and th eir signals when a 1000Base-T port is operating at 1000 Mbp s. T able 14. 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- ...
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