Allied Telesis AT-8500 Series инструкция обслуживания

613-000818 Rev. B AT-8500 Series Layer 2+ Fast Ethernet Switches AT-8516F/SC AT-8524M AT-8524POE AT-8550GB AT-8550SP Installation Guide[...]

Copyright © 2008 Allied Telesis, Inc. All rights reserved. No part o f this pub lication may be repro duced without prior wr itten permission from Al lied Telesis, Inc. Allied Telesis is a t rademark of Allied Tele sis, Inc. Microsoft and Internet Explorer are regist ered tradem arks of Microsoft Co rporation. Netscape Navigator is a register ed t[...]

3 Electrical Safety and Emissions S tandards This product meets the following standards. RFI Emissions FCC Class A, EN55022 Cl ass A, EN61000-3-2, EN61000-3-3, VCCI Class A, C-TICK, CE Immunity EN55024 Electrical Safety EN60950 (TUV), UL 60950 ( C UL US ) U.S. Federal Communications Commission Radiated Energy Note: This equipment has been tested an[...]

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 St atements” ( 613-000405) posted on the Allied Telesis website a t www.alliedtelesis.com.[...]

5 Contents Preface .............. ............ ........... ........... .............. ........... ........... ............ ........... .............. ...... ......................... ........... ........... .. 11 Safety Symbols Used in th is Docu ment........ ............ ........... ........... .............. ........... ........... ............. [...]

Contents 6 Selecting a Site for t he Switch . ............ .............. .............. ........... .............. .............. ........... ..... ... ............ .............. ........... ......51 Planning the Installation ....................... ........... ........ ........... .............. ............ ........... ........... . ....... ...[...]

7 Figur es Figure 1. AT-8516F/SC Switch Front and Back Panels 9 Figure 2. AT-8524M Switch Front and Back Panels 10 Figure 3. AT-8524POE Switch Front and Back Panels 11 Figure 4. AT-8550GB Switch Front and Back Panels 12 Figure 5. AT-8550SP Switch Front and Back Panels 13 Figure 6. GBIC Mod ule 21 Figure 7. SFP Transceiver 21 Figure 8. AT-RPS3004 Re[...]

Figures 8 Figure 1. AT-8516F/SC Switch Front and Back Pane ls .... ............................ ............ ...................... .......... .... ........... ............17 Figure 2. AT-8524M Switch Front and Back Panels ....... ...................... ........... ........... ............ .............. .. ... ............ ..............18 Figure [...]

9 Table 1. Safety Sy mbols ..................... .............. ........... .............. ........... .............. ............ ..... ......... .............. ........... ........... .. 12 Table 2. Model Configurations .................. ..... ... ........... .............. ........... ............ ........... ........... .......................[...]

Tables 10[...]

11 Pr eface This guide provides the hardware in stallation instructions fo r you managed, Layer 2+ AT-8500 Series Fast Ethernet switch . This preface contains the following sections:  “Safety Symbols Used in this Document” o n page 12  “Where to Find W eb-based Guides” on p age 13  “Contacting Allie d T elesis” on p age 14[...]

Preface 12 Safety Symbols Used in this Document This document uses the safety symbols defined in Table 1. T able 1. Safety Symbols Symbol Meaning Description Caution Performing or omi tting a specific action may result in equipment damage or loss of data. W arning Performing or omi tting a specific action may result in electrical shock.[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 13 Where to Find Web-based Guides The installation and user guides for all Allied Telesis products are available in portable document format (PDF) o n our web site at www.alliedtelesis.com . You can view the documents onlin e or download them onto a local workstation or server.[...]

Preface 14 Contacting Allied Telesis This section provides Allied Telesis contact information for technical support as well as sales or corporate informat ion. Online Support You can request technical sup port online by accessing t he Allied Telesis Knowledge Base from the followin g web site: www.alliedtelesis.com/support . You can use the Knowled[...]

15 Chapter 1 Overview The AT-8500 Series switches are manage d, Layer 2+ Fast Ethernet switches. These switches are designed to simplify the task of creating or expanding an Ethernet or Fast Ethernet net work. This chapte r contains the following sections:  “Model Configurations” on p age 16  “Model Descriptions” on p age 17  “Po[...]

Chapter 1: Ove rview 16 Model Configurations Table 2 lists the basic model configurations. T able 2. Model Configura tions Model Configuration A T-8516F/SC 16 100Base-FX port s with dual SC connectors plus two expansion slot s for optional fiber optic and twisted pair p ort expansion mo dules. A T-8524M 24 10/100Base-TX ports pl us two expansion sl[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 17 Model Descriptions AT-8516F/SC The AT-8516F/SC switch has 16 100Base-FX fiber optic ports with dual SC connectors. The ports operate at 100 Mbps, half- or full-duplex mode, and have a maximum operating distance of 2 kilomete rs (1.24 miles) or 412 meters (1,360 feet), dep ending [...]

Chapter 1: Ove rview 18 AT-8524M The AT-8524M switch has 24 10/100Base-TX twisted pair po rts and two module expansion slots. The twisted pair po rts feature RJ-45 connectors and have a maximum operating distanc e of 100 meters (328 feet) using Category 3 or better 100 ohm twisted pair ca ble for 10Base-T operation and Category 5 or 5E 100 ohm tw i[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 19 AT-8524POE The AT-8524POE switch has 24 10/100 Base-TX ports with Power over Ethernet (PoE) capability. (For a description of this feature, refer to “Power Over Ethernet” on page 27.) The ports feature RJ-45 connectors and have a maximum operating distance of 100 meters (328 [...]

Chapter 1: Ove rview 20 AT-8550GB The AT-8550GB switch has 48 10/100Base-TX twisted pair ports, capable of operating at either 10 or 100 Mbps , with RJ-45 connectors. These ports have a maximum operating dista nce of 100 meters (32 8 feet) using Category 3 or better 100 ohm twisted pair ca ble for 10Base-T operation and Category 5 or 5E 100 ohm tw [...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 21 AT-8550SP The AT-8550SP switch has 48 10/100Base-TX twisted pair port s with RJ-45 connectors. The port s have a maximum operating distance of 100 meters (328 feet) using Category 3 or better 100 ohm twisted pair cable for 10Base-T operation and Category 5 or 5E 100 ohm twisted p[...]

Chapter 1: Ove rview 22 Port Descriptions This section provides information on the fo llowing port types fo und on the AT-8500 Series switches:  “10/100Base-TX T wisted Pair Ports,” next  “10/100/1000Base-T T wisted Pair Ports” on p age 24  “100Base-FX Fiber Optic Ports” on p age 25 10/100Base-TX Twisted Pair Ports This section[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 23 Note In order for a switch port to successfully Aut o-Negotiate its duplex mode with an end node, the end nod e should also be using Auto- Negotiation. Otherwise, a duplex mode mismatch can occur. A switch port using Auto-Negotiation will defau lt to half-duplex if it detects tha[...]

Chapter 1: Ove rview 24 10/100/ 1000Base-T Twisted Pair Ports This section applies to Port 49R and Port 50R on the AT-855 0GB and AT-8550SP switches. Type of Connector The ports have 8-pin RJ-45 connectors. The ports u se four pins when operating at 10 or 100 Mbps and all eight pins when operating at 1000 Mbps. Speed The ports can operate at 10, 10[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 25 For 10 Mbps, the port requires Cate gory 3 or better 100 ohm shielde d or unshielded twisted pair cabling. For 100 or 1000 Mbps operation, the ports require Category 5 or Enhanced Category 5 (5E) 100 ohm shielded or unshielded twisted pair cabling . Auto-MDI/MDI-X The ports are a[...]

Chapter 1: Ove rview 26 Type of Cable The fiber optic ports can use e ither 50/125 or 62.5/125 micron multimode fiber optic cable. Note Do not use single-mode fiber optic cable with these ports.[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 27 Power Over Ethernet The following discussion applies only to the AT-8524POE switch. The twisted pair ports on the AT-8524POE switch fe ature Power over Ethernet (PoE). PoE is a mechanism for supplying p ower to network devices over the same twisted pair cables u sed to carry netw[...]

Chapter 1: Ove rview 28 described in Table 3. . A port connected to a network node that is not a powered device (that is, a device that receives its power from another power source) functions as a regular Ethernet port, without PoE. The PoE feature remain s enabled on the port but no power is delivered to the d evice. Implementation A standard Ethe[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 29 GBIC and SFP Slots The AT-8550GB switch has two GBIC slots, and AT-8550SP switch ha s two SFP slots. The slots are labelled Port 49 and Port 50. Each slot ca n accommodate one optional fiber optic Gigabit Inte rface Converter (GBIC) or Small Form-factor Pluggable (SPF) transceive[...]

Chapter 1: Ove rview 30 Module Expansion Slots The AT-8516F/SC, AT-8524M, and AT-8524POE switch es have two expansion slots. Each slot can accommodat e an expansion module. Yo u can use the slots to add 100Base and 1000Ba se fiber optic and twisted pair ports to the switch. Note For a list of the Allied Telesis expansion modu les supported by the s[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 31 LEDs This section provides information on the LEDs fo und on the AT-8500 Series switches:  “T wisted Pair Port LEDs and the LED Mode Select Button,” next  “Fiber Optic Port LEDs” on page 3 4  “GBIC and SFP Expan sion Slot LEDs” on p age 35  “System LEDs?[...]

Chapter 1: Ove rview 32 Table 5 describes the LEDs for t he 10/100/1000Base-TX twisted p air ports, Ports 49R and 50R, on the AT-8550GB and AT-8550SP switches. Mode - 100 (A T-8524M) OFF Indicates that the port is operating a t 10 Mbps. Green Indicates that the port is operating at 100 Mbps. Mode - SPD (A T-8550GB and A T-8550SP) OFF Indicates that[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 33 Table 6 describes the LEDs for t he 10/100Base-TX twisted pair ports on the AT-8524POE switch. Mode - SPD OFF Indicates that the port is operating at 1 0 or 100 Mbp s. Green Indicates that the port is operating at 1000 Mbps. Mode - FDX OF F Indicates that the port is operating in[...]

Chapter 1: Ove rview 34 Fiber Optic Port LEDs This section applies to the AT-8516F/SC switch. The fiber optic ports on an AT-8516F/SC switch have two LEDs, la beled L/A and D/C. The LEDs Mode - DC OFF Indicates that the po rt has not established a valid link with its end node. S teady Green Indicates that the port is operating in full duplex mode. [...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 35 are defined in Table 7. Note The AT-8516F/SC switch does not have an LED Mo de Select button. GBIC and SFP Expansion Slot LEDs The GBIC and SFP slots on the AT-8 550GB and AT-8550SP switches, respectively, have two LEDs. The LEDs display the operating statu s of the fiber optic p[...]

Chapter 1: Ove rview 36 System LEDs The system LEDs on the front panel disp lay general status information, as described in Table 9. Mode - SPD Solid Green Indicates that the port is operating at 1000 Mbps. Mode - FDX OFF In dicates that the port is operating in half-dupl ex mode. Solid Green Indicates that the port is operating in full-duplex mode[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 37 RS-232 Terminal Port You can use the RS-232 terminal port to establish a local (out-of-band) management session with the switch a nd to configure the switch’s operating parameters. You establish a local management se ssion with the switch by connecting either a termin al or a p[...]

Chapter 1: Ove rview 38 Power Options and Connectors This section provides informatio n about the power options and features on the AT-8500 Series switches:  “RPS Connector ,” next  “AC Power Connector” on p age 39  “DC Power Connector” on p age 39 RPS Connector The RPS con nector on the back panel of the switch con nects to an[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 39 AC Power Connector The switch has a single AC power su pply socket on the back panel, which has autoswitch AC inputs. To power the switch o n or off, you connect or disconnect the power cord. Refer to Appendix A, “Tech nical S pecifications” on page 81 for the input voltage r[...]

Chapter 1: Ove rview 40 A Few Basics about Ethernet Switching An Ethernet switch interconnects ne twork devices, such as workstatio ns, printers, routers, and other Ethern et switches, so that they can communicate with each other b y sending and receiving Ethernet frames. MAC Address Table Every hardware device in your net work has a MAC address an[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 41 transmits data. If an end node can receive or transmit data, but no t both simultaneously, the end node is o perating in what is referred to as half- duplex mode. If an end node can bo th receive and transmit data simultaneously, the end node is said to be operating in full-duple[...]

Chapter 1: Ove rview 42 How a switch signals an end node to stop transmitting data d iffers depending on the speed and duplex mode of the end node and switch port. A twisted pair port operating at 100 Mbps port and half-duplex mod e stops an end node fro m transmitting data by forcing a colli sion. A collision on an Ethernet network occurs whe n tw[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 43 Network Topologies This section illu strates several of t he network topologies you can create with the AT-8500 Series Fast Ether net switch. Power Workgroup Topology The topology shown in Figure 9 is commonly referred to as a power workgroup topology. Each workstation or end nod[...]

Chapter 1: Ove rview 44 Figure 10. Collapsed Backbone Topology Mixed Topology You can always combine t opologies as well as build a larger network by connecting different switches togethe r. If the switches are within 100 meters (328 feet) of each other, you can use the twisted pair po rts. If the switches are further apart, then you can use fiber [...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 45 Figure 11 illustrates a network of three AT-8524M Fast Ethernet switches. The workstations and servers on the network are connected either directly to a switch or indirectly throug h an Ethernet hub. Th e switches themselves are connected together through 1000Bas e fiber optic po[...]

Chapter 1: Ove rview 46[...]

47 Chapter 2 Installation This chapter provides the installati on pr ocedures for the switch and contains the following sections:  “Reviewing Safety Precautions” on p age 48  “Selecting a Site for the Switch” on p age 51  “Planning the Inst allation” on p age 52  “Unpacking the Switch” on page 54  “Installing the Sw[...]

Chapter 2: Inst allation 48 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 translation of the safety state ment is available in a PDF document titled “Tra nslated Safety Statements” (613-000405) on the Allied Telesis web[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 49 W arning: As a safety precaution, inst all a circuit breaker with a minimum value of 15 Amps between the equipment and the DC power source. Always connect the wires to the LAN equip ment first before you connect the wires to the circuit breaker . Do not work with HOT feeds to avo[...]

Chapter 2: Inst allation 50 W arning: This unit might have more than one power source. T o reduce the risk of electric s hock, disconnect al l power sources before servicing the unit.  E30 If installed in a closed or multi- unit rack assembly, the operating ambient temperature of the rack environme nt may be greater than the room ambient tempera[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 51 Selecting a Site for the Switch Observe the following requirements when choo sing a site for your switch:  If you plan to install th e switch in an equipment rack, che ck to be sure that the rack is safely secured and that it will not tip over . Devices in a rack should be ins[...]

Chapter 2: Inst allation 52 Planning the Installation Table 10 contains the cabling specific a tions for the twisted pair ports. Note The twisted pair ports on the switch featu re auto-MDI/MDI-X. They configured themselves automatically as MDI or MDI-X when connected to an end node . This allows you to use a straight-through twisted pair cable when[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 53 Table 11 contains the cabling specificat ions for the fiber optic ports on an AT-8516F/SC switch. Note For cabling specifications for an option al GBIC module, SFP module, expansion module, or stacking module, refer to the installation guide included with the optio n. T able 1 1.[...]

Chapter 2: Inst allation 54 Unpacking the Switch To unpack the switch, perform the following p rocedure: 1. Remove all components from the shipping pa ckage. Note Store the packaging material in a sa fe location. You must use the original shipping material if you need to re turn the unit to Allied Telesis. 2. Place the switch on a level, secure sur[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 55 Installing the Switch in a Rack The switch is shipped with two brackets for mounting the unit in a rack. The brackets can be attached to the chassis fou r ways. You can install the chassis so that it is flush with the front of the rack or so that it extends forward from the rack.[...]

Chapter 2: Inst allation 56 2. Using a flat-head screwd river, remove the snap-on plastic feet fro m the bottom of the switch, as shown in Figure 13. Figure 13. Removing t he Feet 3. Turn the switch over. 4. Attach a rackmounting bracket to one side of the swit ch using four of the screws that came with the switch. You can inst all the brackets in [...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 57 Caution: Air vents must not be blocke d and must have free access to the room ambient air for cooling.  E6 Warning: Operating Temperature. T his product is designed for a maximum ambient temperature of 40° deg rees C.  E7 Circuit Overloading: Consideratio n should be given[...]

Chapter 2: Inst allation 58 Installing an Optional Expansion or Stacking Module This section describes how to install an optional expansion or stacking module in the switch and applies to the AT- 8516F/SC, AT-8524M, and AT-8524POE models. Note The modules can be hot-swapped; you do not have to power off a switch to install these options. To install[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 59 4. Pull the faceplate straight out of the slot. 5. Keep the faceplate in a safe area in case you need to reinstall it. The faceplate keep s any dust from getting into the switch and maintains pro per airflow if the slot remains empty . 6. Carefully slide the module into the slot [...]

Chapter 2: Inst allation 60 Installing an Optional GBIC To install an optional GBIC in an AT-8550GB switch, perform the f ollowing procedure: Note A GBIC can be hot-swapped; you do not have to power off a swit ch to install it. 1. Remove the GBIC from its shipping container and store the packaging material in a safe location. Note You must use the [...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 61 ferrules of the optical connector. Figure 17. Optical Bore and Ferrule of GBIC Module Note Unnecessary removal and insertion of a GBIC can lead to premature failure. 4. Slide the GBIC module, with the label side up, into an expansion slot on the switch, as shown in Figure 18. The[...]

Chapter 2: Inst allation 62 Installing an Optional SFP Transceiver To install an optional SFP transceiver in an AT-8550SP switch, perform the following procedure: Note An SFP transceiver can be hot-swapped; you do not have to power off a switch to install it. 1. Unpack the SFP t ransceiver from it s shipping container and stor e the packaging mater[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 63 debris picked up on the ferru les of the optical connectors. Use an alcohol swab or wipe to clean the ferru les of the optical connector . Note Unnecessary removal and insertion of an SFP transceiver ca n lead to premature failure. 4. Remove the dust plug from the SFP slot. 5. Lo[...]

Chapter 2: Inst allation 64 Cabling the Switch To connect the data cables to the switch p orts and to apply power to the switch, perform the following procedure: Cabling Twisted Pair Ports If your AT-8500 Series switch has twisted pair ports, perform the following procedure: 1. Connect the twisted pair data cables to t he RJ-45 ports on the switch,[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 65 instructions on how to configure a port trun k, refer to the AT-S62 Management Software User ’s Guides .  When you connect a device to a p ort on an AT-8524POE switch, the port automatically dete rmines whether the node is a powered device and, if it is, the amount of wattag[...]

Chapter 2: Inst allation 66 2. Attach the fiber optic data cable s to the fiber optic ports, a s shown in Figure 21. Figure 21. Attaching a Fiber Optic Cable When you attach a fiber o ptic cable, be sure to observe the follo wing guidelines:  Be sure that the cable conne ctor is firmly locked into place in the port.  A dual SC port consists o[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 67 remote end node. For example, you cann ot connect a fiber optic port with a maximum distance of 2 kilometers and a n operating wavelength of 1310 nm to another fiber o ptic port that has a maximum distance of 40 kilometers (24.8 miles) and an operating wavelength of 1550 nm. For [...]

Chapter 2: Inst allation 68 Powering on an AC Powered Switch To power on an AC powered switch, perform the fo llowing procedure: Note If you are installing a DC powered switch, g o to “Wiring and Powering on an DC Powered Un it” on page 70. 1. Select the correct power cord for your country. 2. Plug the power cord into the AC power connector on [...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 69 4. If you installed an optional redu ndant power supply unit, connect one end of the DC power cord included with th e RPS unit to the back panel of the redundant power supply and the other end to the RPS connect or on the back panel of the switch, as sh own in Figure 24. Figure 2[...]

Chapter 2: Inst allation 70 Wiring and Powering on an DC Powered Unit To provide power for a DC powered switch, perform the following steps: 1. Before you attach wires to the DC terminal block at the rear of the switch, review the following warning: Warning As a safety precaution, install a circuit breaker with a minimum va lue of 15 Amps between t[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 71 Warning Do not strip more than the recommended amount o f wire. (See Figure 26.) Stripping more than the reco mmended amount can create a safety hazard by leaving exposed wire on the terminal block after installation.  E10 Figure 26. Stripped Wire 4. Connect the frame ground w[...]

Chapter 2: Inst allation 72 7. Secure the tray supply cable n ear the rack framework using multiple cable ties to minimize the chance of the con nections being disturbed by casual contact with the wiring. Use at least f our cable ties separated four inches apart with the first one located within six inches of the terminal block. This system works w[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 73 Starting a Local Management Session The procedure in this section explains how to start a local (out-of-ban d) management session using the RS-232 te rminal port on the swit ch. You can use a local management session to configure the switch’s operating parameters and view perfo[...]

Chapter 2: Inst allation 74  Parity: None  Stop bits: 1  Flow control: None Note The port settings are for a DEC VT100 or ANSI terminal, or an equivalent terminal emulator program. Note When you reset or power cycle the switch during a local management session, you will see the following promp t: Press <CTRL>B to go to Boot Prom pt .[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 75 Warranty Registration When you have finished installing the switch, fill out the enclosed warranty card and mail it to Allied Telesis.[...]

Chapter 2: Inst allation 76[...]

77 Chapter 3 T r oubleshooting This chapter contains information on how to troubleshoot the switch in the event that a problem occurs. If after following the instructions in this chapte r you are unable to resolve the problem, contact Allied Telesis Technical Support for assistance. Refer to “Contacting Allied Telesis” on page 14 for contact in[...]

Chapter 3: Tro ubleshooting 78  V erify that you are using the appropriate category of twisted p air cable: Category 3 or better for 10 Mbp s operation and Category 5 and Category 5E for 100 Mbp s and 1000 Mbp s operations.  Determine if a crossover cable is required. Since the twisted pair po rts feature auto MDI/MDI-X, you should be able to[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 79 example, you cannot connect a fibe r optic port with a maximum distance of 40 kilome ters (24.8 miles) and an o perating wavelength of 1550 nm to a remote fiber optic port with an maximum d istance of on ly 2 kilometers (1.24 miles) and a wavelength of 13 10 nm.  Check to be s[...]

Chapter 3: Tro ubleshooting 80 Check the FAULT LED. During n ormal operations, the LED remains off, except for periods when the managemen t software is saving a ch ange to its configuration. If it remains on for an extended period, do the following:  T ry resetting the switch by disconnecting and reconnecting the AC power cord. If the switch is [...]

81 Appendix A T echnical Specifications Physical Specifications AT-8516F/SC and AT-8524M 4.4 cm x 44.0 cm x 22.2 cm Dimensions (1.75 in. x 17.3 in. x 8.75 in.) (H x W x D) AT-8550GB and AT-8550SP 4.4 cm x 44.0 cm x 25.5 cm Dimensions (1.75 in. x 17.3 in. x 10.0 in.) (H x W x D) AT-8524POE Dimensions: 4.4 cm x 43.8 cm x 40.6 cm (1.75 in. x 17.25 in.[...]

Appendix A: Technica l Specifications 82 Power Specifications Input Voltage: All models except for the AT-8524POE: AC 100-240 VAC, 2A Max, 50/60 Hz DC 36-60 VDC, 4A Max AT-8524POE: AC 100-240 VAC, 6A Max, 50/60 Hz AC Input Power Consumption: All models except AT-8524POE: 74 watts Only the AT-8524POE: 450 watts Available Power over Ethernet: 370 W @[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 83 RJ-45 Twisted Pair Port Pinouts Figure 29 illustrates the pin lay out for an RJ-45 connector an d port. Figure 29. RJ-45 Connector and Port Pin Layout Table 12 lists the RJ-45 pin signals for the 10/100Base -TX ports on the AT-8524M, AT-8550GB, and AT-8550SP switches. Table 13 li[...]

Appendix A: Technica l Specifications 84 Table 14 lists the RJ-45 pin signals for the two 10/100 /1000-Base-T ports on the AT-8550GB switch when the ports are opera ting at 1000 Mbps. 4 Unused Unused 5 Unused Unused 6 RX- and Vport-2 TX- and Vport-2 7 Unused Unused 8 Unused Unused 1. Vport-1 can be positive (+ ) or negative (-), depend- ing on the [...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 85 AT-8516F/SC Fiber Optic Port Specifications Standard: 100Base-FX Speed: 100 Mbps Maximum Operating Distance: 2 km (1.24 mi) Connectors: AT-8516F/SC Dual SC Connector Type of Cabling: 50/125 micron or 62.5/125 micron (core/cladding) multimode fiber optic cabling Operating Waveleng[...]

Appendix A: Technica l Specifications 86 RS-232 Terminal Port Pinouts Table 15 lists the pin signals on the RS-2 32 terminal port. Table 15. RS-232 Terminal Port Pin Signals Pin Signal 1 Data Carrier Detect 2 Transmit Data 3 Receive Data 4 Data Set Ready 5 Ground 6 Data Terminal Ready 7 Clear to Send 8 Request to Send 9 Ring Indicator[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 87 RPS Connector Port Pinouts Figure 30 illustrates the pin layout to the 16-pin molex connector and RPS port on the AT-8516F/SC, AT -8524M, AT-8550GB, and AT-8550SP switches. Figure 30. RPS 16-pin Molex Conne ctor Pin Layout Table 16 lists the 16-pin RPS co nnector pins and definit[...]

Appendix A: Technica l Specifications 88 Figure 31 illustrates the pin layout to th e RPS connector on the AT-8524POE switch. Figure 31. AT-8524POE RPS Connector Pin L ayout Table 17 lists the RPS connector pins and definitions. 16 +3.3V DC Return Table 16. Pin Definitions of t he 16-pin RPS Connector (Continued) Pin Definition A1 A2 1 7 15 8 Table[...]

AT-8500 Series Layer 2+ Fast Ethernet Switches Ins tallation Guide 89 13 3.3V RS+ 14 3.3V 15 3.3V Table 17. Pin Definitions for the RPS Connector on the AT-8524POE Switch (Continued) Pin Definition[...]

Appendix A: Technica l Specifications 90 Dual SC Type Connector A dual SC type connector, as shown in Figure 32, is used with the AT-8516F/SC switch. Figure 32. Dual SC Connector[...]