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Compliances and Safety Warnings FCC - Class A This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause interference to radio communications. It has been tested and found to comply with the limits for a Class A computing device pursuant to Subpart B of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference when operated in a commercial environment.
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CE Mark Declaration of Conformance for EMI and Safety (EEC) This information technology equipment complies with the requirements of the Council Directive 89/336/EEC on the Approximation of the laws of the Member States relating to Electromagnetic Compatibility and 73/23/EEC for electrical equipment used within certain voltage limits and the Amendment Directive 93/68/EEC.
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Safety Compliance Warning: Fiber Optic Port Safety When using a fiber optic port, never look at the transmit laser while it is powered on. Also, never look directly at the fiber TX port and fiber cable CLASS I LASER DEVICE ends when they are powered on.
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Power Cord Set U.S.A. and Canada The cord set must be UL-approved and CSA certified. The minimum specifications for the flexible cord are: - No. 18 AWG - not longer than 2 meters, or 16 AWG. - Type SV or SJ - 3-conductor The cord set must have a rated current capacity of at least 10 A The attachment plug must be an earth-grounding type with NEMA...
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France et Pérou uniquement: Ce groupe ne peut pas être alimenté par un dispositif à impédance à la terre. Si vos alimentations sont du type impédance à la terre, ce groupe doit être alimenté par une tension de 230 V (2 P+T) par le biais d’un transformateur d’isolement à rapport 1:1, avec un point secondaire de connexion portant l’appellation Neutre et avec raccordement direct à...
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Stromkabel . Dies muss von dem Land, in dem es benutzt wird geprüft werden: Schweiz Dieser Stromstecker muß die SEV/ASE 1011Bestimmungen einhalt- Europe Das Netzkabel muß vom Typ HO3VVF3GO.75 (Mindestanforderung) sein und die Aufschrift <HAR> oder <BASEC> tragen. Der Netzstecker muß die Norm CEE 7/7 erfüllen (”SCHUKO”). Warnings and Cautionary Messages Warning: This product does not contain any serviceable user parts.
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Environmental Statement The manufacturer of this product endeavours to sustain an environmentally-friendly policy throughout the entire production process. This is achieved though the following means: • Adherence to national legislation and regulations on environmental production standards. • Conservation of operational resources. •...
These switches also provide two 1 Gbps built-in stacking ports for connecting up to eight ES3526YA or four ES3550YA units in a stack. If you connect both ES3526YA and ES3550YA units in the same stack, then you can only stack up to four units.
2. Non-blocking switching is used for traffic crossing ports attached to the same switch ASIC; while blocking is employed for traffic passing between different switch chips. The ES3526YA only has one switch chip; ES3550YA has two – ASIC#1: Ports 1-12, 25-36, 49, 51 and ASIC#2:...
(See “1000BASE-T Pin Assignments” on page B-3.) 3. Flow control is only supported for ports attached to the same switch ASIC. The ES3526YA only has one switch chip; ES3550YA has two – ASIC#1: Ports 1-12, 25-36, 49, 51 and ASIC#2:...
Stacking Ports The unit provides two stacking ports that provide a 4 Gbps stack backplane connection. You can stack up to eight ES3526YA units or four ES3550YA units using Category 5 Ethernet cables (purchased separately). The Master button enables one switch in the stack to be selected as the master.
Description of Hardware Port and System Status LEDs The ES3526YA/ES3550YA includes a display panel for key system and port indications that simplify installation and network troubleshooting. The LEDs, which are located on the front panel for easy viewing, are shown below and described in the following tables.
Introduction System LEDs Figure 1-4 System LEDs Table 1-2 System Status LEDs Condition Status On Green The unit’s internal power supply is operating normally. On Amber The unit’s internal power supply has failed. The unit has no power connected. Diag On Green The system diagnostic test has completed successfully.
Figure 1-5 Power Supply Receptacles Features and Benefits Connectivity • 24 (ES3526YA) or 48 (ES3550YA) 100BASE-TX ports, 2 1000BASE-T ports, and 2 combination 1000BASE-T/SFP ports for easy integration and for protection of your investment in legacy LAN equipment. • Auto-negotiation enables each RJ-45 port to automatically select the optimum speed (10, 100 or 1000 Mbps), and the communication mode (half or full duplex) if this feature is supported by the attached device;...
• Provides stacking capability via RJ-45 ports with 4 Gbps stacking bandwidth. You can connect up to eight ES3526YA units or four ES3550YA units in a stack. Expandability • 2 Small Form Factor Pluggable (SFP) transceiver slots (shared with 1000BASE-T ports) •...
Chapter 2: Network Planning Introduction to Switching A network switch allows simultaneous transmission of multiple packets via non-crossbar switching. This means that it can partition a network more efficiently than bridges or routers. The switch has, therefore, been recognized as one of the most important building blocks for today’s networking technology.
Network Planning Application Examples The ES3526YA/ES3550YA switches are not only designed to segment your network, but also to provide a wide range of options in setting up network connections. Some typical applications are described below. Collapsed Backbone The ES3526YA/ES3550YA are an excellent choice for mixed Ethernet, Fast Ethernet, and Gigabit Ethernet installations where significant growth is expected in the near future.
You can stack up to eight ES3526YA switch units together, forming a single “virtual” switch containing up to 208 ports. Or you can stack up to four ES3550YA units, forming a virtual switch containing up to 200 ports.
Network Planning Remote Connections with Fiber Cable Fiber optic technology allows for longer cabling than any other media type. A 1000BASE-SX (MMF) link can connect to a site up to 550 meters away, a 1000BASE-LX (SMF) link up to 5 km, and a 1000BASE-LH link up to 70 km. This allows a Gigabit Ethernet Switch to serve as a collapsed backbone, providing direct connectivity for a widespread LAN.
Application Examples Making VLAN Connections This switch supports VLANs which can be used to organize any group of network nodes into separate broadcast domains. VLANs confine broadcast traffic to the originating group, and can eliminate broadcast storms in large networks. This provides a more secure and cleaner network environment.
• 1000BASE-LH: 70 km (43.5 miles) for singlemode fiber. However, power budget constraints must also be considered when calculating the maximum cable length for your specific environment. The maximum number of units that can be stacked together are: • 8 ES3526YA units • 4 ES3550YA units...
- be at the center of all the devices you want to link and near a power outlet. - be able to maintain its temperature within 0 to 40 °C (32 to 104 °F) for the ES3526YA, 0 to 50 °C (32 to 122 °F) for the ES3550YA, and...
Then, before beginning the installation, be sure you have all other necessary installation equipment. Package Contents • Stackable Fast Ethernet Switch (ES3526YA or ES3550YA) • Four adhesive foot pads • Bracket Mounting Kit containing two brackets and eight screws for attaching the brackets to the switch •...
Mounting Mounting This switch can be mounted in a standard 19-inch equipment rack or on a desktop or shelf. Mounting instructions for each type of site follow. Rack Mounting Before rack mounting the switch, pay particular attention to the following factors: •...
If also installing an RPS, mount it in the rack below the other devices. Montage (Rack Mounting Instructions - German) ES3526YA/ES3550YA Switch-Einheiten können an ein standardmäßiges 19-Zoll Einrichtungsrack, einen Arbeitstisch oder ein Regal montiert werden. Folgend finden Sie die Montageanweisungen für jeden Positionstyp.
Mounting So montieren Sie Geräte an ein Rack: 1. Befestigen Sie die Metallwinkel mit den im Metallwinkel-Montageset erhältlichen Schrauben an dem Gerät. 2. Befestigen Sie das Gerät mit vier Rackmontageschrauben (nicht beigelegt) an dem Rack. 3. Wenn Sie nur einen Switch installieren, dann springen Sie bitte über zu "Verbinden mit einer Stromquelle"...
Installing the Switch Installing an Optional SFP Transceiver Figure 3-5 Installing an SFP Transceiver into a slot This switch supports 1000BASE-SX, 1000BASE-LX, and 1000BASE-LH SFP transceivers. To install an SFP transceiver, do the following: Consider network and cabling requirements to select an appropriate SFP transceiver type.
Connecting Switches in a Stack You can form a stack containing up to eight ES3526YA units or up to four ES3550YA units. To connect switches in a stack, perform the following steps: Enable the stacking ports on each unit (i.e., the Stack button pushed out) Note: Pressing the Stack button during normal operation will cause the system to reboot.
Master, or if no switches are selected, the stack will not function. Connecting to a Power Source To connect a switch to a power source: Insert the power cable plug directly into the AC receptacle located at the back of the switch. ES3526YA 12V 4.5A 100-240V~ 50-60Hz 1.5A ES3550YA 12V 4.5A...
Connecting to the Console Port Connecting to the Console Port The DB-9 serial port on the switch’s back panel is used to connect to the switch for out-of-band console configuration. The command-line-driven configuration program can be accessed from a terminal or a PC running a terminal emulation program. The pin assignments used to connect to the serial port are provided in the following table.
Chapter 4: Making Network Connections Connecting Network Devices These switches are designed to be connected to 10, 100 or 1000 Mbps network cards in PCs and servers, as well as to other switches and hubs. They may also be connected to remote devices using optional 1000BASE-SX, 1000BASE-LX, or 1000BASE-LH SFP transceivers.
Making Network Connections Connecting to PCs, Servers, Hubs and Switches Attach one end of a twisted-pair cable segment to the device’s RJ-45 connector. Figure 4-1 Making Twisted-Pair Connections If the device is a network card and the switch is in the wiring closet, attach the other end of the cable segment to a modular wall outlet that is connected to the wiring closet.
Making Network Connections Fiber Optic SFP Devices An optional Gigabit SFP transceiver (1000BASE-SX, 1000BASE-LX, or 1000BASE-LH) can be used for a backbone connection between switches, or for connecting to a high-speed server. Each single-mode fiber port requires 9/125 micron single-mode fiber optic cable with an LC connector at both ends.
Connectivity Rules Connect one end of the cable to the LC port on the switch and the other end to the LC port on the other device. Since LC connectors are keyed, the cable can be attached in only one orientation. Figure 4-3 Making Fiber Port Connections As a connection is made, check the Link LED on the switch corresponding to the port to be sure that the connection is valid.
Making Network Connections Category 5 cabling for running 1000BASE-T is a simple test of the cable installation to be sure that it complies with the IEEE 802.3-2002 standards. 1000 Mbps Gigabit Ethernet Collision Domain Table 4-1 Maximum 1000BASE-T Gigabit Ethernet Cable Length Cable Type Maximum Cable Length Connector...
Cable Labeling and Connection Records Cable Labeling and Connection Records When planning a network installation, it is essential to label the opposing ends of cables and to record where each cable is connected. Doing so will enable you to easily locate inter-connected devices, isolate faults and change your topology without need for unnecessary time consumption.
Appendix A: Troubleshooting Diagnosing Switch Indicators Table A-1 Troubleshooting Chart Symptom Action PWR LED is Off • Check connections between the switch, the power cord and the wall outlet. • Contact your dealer for assistance PWR LED is Amber • Internal power supply has failed. Contact your local dealer for assistance.
Troubleshooting Power and Cooling Problems If the power indicator does not turn on when the power cord is plugged in, you may have a problem with the power outlet, power cord, or internal power supply. However, if the unit powers off after running for a while, check for loose power connections, power losses or surges at the power outlet.
Appendix B: Cables Twisted-Pair Cable and Pin Assignments For 10/100BASE-TX connections, the twisted-pair cable must have two pairs of wires. For 1000BASE-T connections the twisted-pair cable must have four pairs of wires. Each wire pair is identified by two different colors. For example, one wire might be green and the other, green with white stripes.
Cables Table B-1 10/100BASE-TX MDI and MDI-X Port Pinouts MDI Signal Name MDI-X Signal Name Transmit Data plus (TD+) Receive Data plus (RD+) Transmit Data minus (TD-) Receive Data minus (RD-) Receive Data plus (RD+) Transmit Data plus (TD+) Receive Data minus (RD-) Transmit Data minus (TD-) Not used Not used...
Twisted-Pair Cable and Pin Assignments You must connect all four wire pairs as shown in the following diagram to support Gigabit Ethernet. EIA/TIA 568B RJ-45 Wiring Standard 10/100BASE-TX Crossover Cable White/Orange Stripe Orange White/Green Stripe End A End B Blue White/Blue Stripe Green White/Brown Stripe...
Cables Cable Testing for Existing Category 5 Cable Installed Category 5 cabling must pass tests for Attenuation, Near-End Crosstalk (NEXT), and Far-End Crosstalk (FEXT). This cable testing information is specified in the ANSI/TIA/EIA-TSB-67 standard. Additionally, cables must also pass test parameters for Return Loss and Equal-Level Far-End Crosstalk (ELFEXT).
Switch Features Size 44.0 x 23 x 4.4 cm (17.32 x 9.06 x 1.73 in.) Temperature Operating: 0°C to 50°C (32°F to 122°F) Storage: -40°C to 70°C (-40°F to 158°F) Humidity Operating: 5% to 95% (non-condensing) Power Supply Internal, auto-ranging transformer: 100 to 240 VAC, 50 to 60 Hz, 2A External, supports a 14-pin connection for a redundant power supply Power Consumption 54 Watts maximum...
Glossary 10BASE-T IEEE 802.3 specification for 10 Mbps Ethernet over two pairs of Category 3, 4, or 5 UTP cable. 100BASE-FX IEEE 802.3 specification for 100 Mbps Ethernet over two strands of 50/125, 62.5/ 125 micron, or 9/125 micron core fiber cable. 100BASE-TX IEEE 802.3u specification for 100 Mbps Ethernet over two pairs of Category 5 UTP cable.
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Glossary Collision A condition in which packets transmitted over the cable interfere with each other. Their interference makes both signals unintelligible. Collision Domain Single CSMA/CD LAN segment. CSMA/CD CSMA/CD (Carrier Sense Multiple Access/Collision Detect) is the communication method employed by Ethernet, Fast Ethernet, and Gigabit Ethernet. End Station A workstation, server, or other device that does not forward traffic.
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Glossary IEEE 802.3u Defines CSMA/CD access method and physical layer specifications for 100BASE-TX Fast Ethernet. (Now incorporated in IEEE 802.3-2002.) IEEE 802.3x Defines Ethernet frame start/stop requests and timers used for flow control on full-duplex links. (Now incorporated in IEEE 802.3-2002.) IEEE 802.3z Defines CSMA/CD access method and physical layer specifications for 1000BASE Gigabit Ethernet.
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Glossary RJ-45 Connector A connector for twisted-pair wiring. Switched Ports Ports that are on separate collision domains or LAN segments. Telecommunications Industry Association Transmission Control Protocol/Internet Protocol (TCP/IP) Protocol suite that includes TCP as the primary transport protocol, and IP as the network layer protocol.
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