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INSTALLATION GUIDE ES3510MA FAST ETHERNET SWITCH Layer 2 Switch with 8 10/100BASE-T (RJ-45) Ports, and 2 Gigabit Combination Ports (RJ-45/SFP) ES3510MA E022010-DT-R01 149100000046A
COMPLIANCES AND SAFETY STATEMENTS FCC - CLASS A This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
COMPLIANCES AND SAFETY STATEMENTS 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.
COMPLIANCES AND SAFETY STATEMENTS SAFETY COMPLIANCE Warning: Fiber Optic Port Safety CLASS I LASER DEVICE 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 ends when they are powered on. Avertissment: Ports pour fibres optiques - sécurité sur le plan optique DISPOSITIF LASER DE CLASSE I Ne regardez jamais le laser tant qu'il est sous tension.
COMPLIANCES AND SAFETY STATEMENTS POWER CORD SAFETY Please read the following safety information carefully before installing the switch: WARNING: Installation and removal of the unit must be carried out by qualified personnel only. ◆ The unit must be connected to an earthed (grounded) outlet to comply with international safety standards. ◆ Do not connect the unit to an A.C. outlet (power supply) without an earth (ground) connection.
COMPLIANCES AND SAFETY STATEMENTS 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 5-15P (15 A, 125 V) or NEMA 6-15P (15 A, 250 V) configuration.
COMPLIANCES AND SAFETY STATEMENTS ◆ La prise secteur doit se trouver à proximité de l’appareil et son accès doit être facile. Vous ne pouvez mettre l’appareil hors circuit qu’en débranchant son cordon électrique au niveau de cette prise. ◆ L’appareil fonctionne à une tension extrêmement basse de sécurité qui est conforme à la norme IEC 60950. Ces conditions ne sont maintenues que si l’équipement auquel il est raccordé fonctionne dans les mêmes conditions.
COMPLIANCES AND SAFETY STATEMENTS Bitte unbedingt vor dem Einbauen des Switches die folgenden Sicherheitsanweisungen durchlesen: WARNUNG: Die Installation und der Ausbau des Geräts darf nur durch Fachpersonal erfolgen. ◆ Das Gerät sollte nicht an eine ungeerdete Wechselstromsteckdose angeschlossen werden. ◆ Das Gerät muß an eine geerdete Steckdose angeschlossen werden, welche die internationalen Sicherheitsnormen erfüllt.
COMPLIANCES AND SAFETY STATEMENTS WARNINGS AND CAUTIONARY MESSAGES WARNING: This product does not contain any serviceable user parts. WARNING: Installation and removal of the unit must be carried out by qualified personnel only. WARNING: When connecting this device to a power outlet, connect the field ground lead on the tri-pole power plug to a valid earth ground line to prevent electrical hazards. WARNING: This switch uses lasers to transmit signals over fiber optic cable.
COMPLIANCES ◆ AND SAFETY STATEMENTS Continual monitoring of safety standards. END OF PRODUCT LIFE SPAN This product is manufactured in such a way as to allow for the recovery and disposal of all included electrical components once the product has reached the end of its life. MANUFACTURING MATERIALS There are no hazardous nor ozone-depleting materials in this product. DOCUMENTATION All printed documentation for this product uses biodegradable paper that originates from sustained and managed forests.
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ABOUT THIS GUIDE PURPOSE This guide details the hardware features of the switch, including the physical and performance-related characteristics, and how to install the switch. AUDIENCE The guide is intended for use by network administrators who are responsible for installing and setting up network equipment; consequently, it assumes a basic working knowledge of LANs (Local Area Networks).
ABOUT THIS GUIDE REVISION HISTORY This section summarizes the changes in each revision of this guide. FEBRUARY 2010 REVISION This is the first revision of this guide.
CONTENTS COMPLIANCES AND SAFETY STATEMENTS 1 2 3 4 5 ABOUT THIS GUIDE 15 CONTENTS 17 TABLES 19 FIGURES 21 INTRODUCTION 23 Overview 23 Description of Hardware 25 NETWORK PLANNING 29 Introduction to Switching 29 Application Examples 30 Application Notes 34 INSTALLING THE SWITCH 35 Selecting a Site 35 Ethernet Cabling 36 Equipment Checklist 37 Mounting 37 Installing an Optional SFP Transceiver 39 Connecting to a Power Source 40 Connecting to the Console Port 41 MAKI
CONTENTS A B C Fiber Optic SFP Devices 45 Connectivity Rules 47 Cable Labeling and Connection Records 49 TROUBLESHOOTING 51 Diagnosing Switch Indicators 51 Power and Cooling Problems 52 Installation 52 In-Band Access 52 CABLES 53 Twisted-Pair Cable and Pin Assignments 53 Fiber Standards 57 SPECIFICATIONS 59 Physical Characteristics 59 Switch Features 61 Management Features 61 Standards 62 Compliances 62 GLOSSARY 63 INDEX 69 – 18 –
TABLES Table 1: Supported SFP Transceivers 25 Table 2: Port Status LEDs 27 Table 3: System Status LEDs 27 Table 4: Serial Cable Wiring 41 Table 5: Maximum 1000BASE-T Gigabit Ethernet Cable Length 47 Table 6: Maximum 1000BASE-SX Gigabit Ethernet Cable Lengths 47 Table 7: Maximum 1000BASE-LX Gigabit Ethernet Cable Length 48 Table 8: Maximum 1000BASE-LH Gigabit Ethernet Cable Length 48 Table 9: Maximum Fast Ethernet Cable Lengths 48 Table 10: Maximum Ethernet Cable Length 48 Tabl
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FIGURES Figure 1: Front Panel 23 Figure 2: Rear Panel 24 Figure 3: Port LEDs 26 Figure 4: Power Supply Socket 27 Figure 5: Collapsed Backbone 30 Figure 6: Network Aggregation Plan 31 Figure 7: Remote Connections with Fiber Cable 32 Figure 8: Making VLAN Connections 33 Figure 9: RJ-45 Connections 36 Figure 10: Attaching the Adhesive Feet 38 Figure 11: Inserting an SFP Transceiver into a Slot 39 Figure 12: Power Socket 40 Figure 13: Console Cable 41 Figure 14: Making T
FIGURES – 22 –
1 INTRODUCTION OVERVIEW The ES3510MA is a Fast Ethernet Layer 2 switch with 8 100BASE-T ports, and two combination 1000BASE-T ports: RJ-45/Small Form Factor Pluggable (SFP) transceiver slots1 (see Figure 1-1, Ports 9-10). The switch also includes an SNMP-based management agent, which provides both in-band and out-of-band access for managing the switch. The ES3510MA provides a broad range of powerful features for Layer 2 switching, delivering reliability and consistent performance for your network traffic.
CHAPTER 1 | Introduction Overview Figure 2: Rear Panel Power Socket SWITCH ARCHITECTURE The switch employs a wire-speed, non-blocking switching fabric. This permits simultaneous wire-speed transport of multiple packets at low latency on all ports. The switch also features full-duplex capability on all ports, which effectively doubles the bandwidth of each connection. This switch uses store-and-forward switching to ensure maximum data integrity.
CHAPTER 1 | Introduction Description of Hardware DESCRIPTION OF HARDWARE 1000BASE-T PORTS The switch contains 8 100BASE-TX RJ-45 ports and 2 shared 1000BASE-T RJ-45/SFP ports. All RJ-45 ports support automatic MDI/MDI-X operation, so you can use straight-through cables for all network connections to PCs or servers, or to other switches or hubs. (See "1000BASE-T Pin Assignments" on page 56.
CHAPTER 1 | Introduction Description of Hardware Table 1: Supported SFP Transceivers Media Standard Cable Diameter (microns) Wavelength (nm) Maximum Distance* 1000BASE-LX 50/125 1300 550 m 62.5/125 1300 550 m 9/125 1300 10 km 9/125 1310 35 km 1550 80 km 1000BASE-LH 1000BASE-T * 100 m Maximum distance may vary for different SFP vendors.
CHAPTER 1 | Introduction Description of Hardware Table 2: Port Status LEDs LED Condition Status (Link/Activity) On/Flashing Yellow Port has established a valid 10/100 Mbps network connection. Flashing indicates activity. On/Flashing Green Port has established a valid 1000 Mbps network connection. Flashing indicates activity. Off There is no valid link on the port. Table 3: System Status LEDs LED Condition Status Power On Green The unit’s internal power supply is operating normally.
CHAPTER 1 | Introduction Description of Hardware – 28 –
2 NETWORK PLANNING INTRODUCTION TO SWITCHING A network switch allows simultaneous transmission of multiple packets via noncrossbar 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.
CHAPTER 2 | Network Planning Application Examples APPLICATION EXAMPLES The switch is 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 switch is an excellent choice for mixed Ethernet, Fast Ethernet, and Gigabit Ethernet installations where significant growth is expected in the near future.
CHAPTER 2 | Network Planning Application Examples NETWORK AGGREGATION PLAN With 28 parallel bridging ports (i.e., 28 distinct collision domains), the switch can collapse a complex network down into a single efficient bridged node, increasing overall bandwidth and throughput. In the figure below, the 1000BASE-T ports on the switch are providing 100 Mbps connectivity for up to 28 segments. In addition, the switch is also connecting several servers at 1000 Mbps.
CHAPTER 2 | Network Planning Application Examples 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 the switch to serve as a collapsed backbone, providing direct connectivity for a widespread LAN. The figure below illustrates the switch connecting multiple segments with fiber cable.
CHAPTER 2 | Network Planning 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. VLANs can be based on untagged port groups, or traffic can be explicitly tagged to identify the VLAN group to which it belongs.
CHAPTER 2 | Network Planning Application Notes APPLICATION NOTES 1. Full-duplex operation only applies to point-to-point access (such as when a switch is attached to a workstation, server or another switch). When the switch is connected to a hub, both devices must operate in half-duplex mode. 2. Avoid using flow control on a port connected to a hub unless it is actually required to solve a problem. Otherwise back pressure jamming signals may degrade overall performance for the segment attached to the hub.
3 INSTALLING THE SWITCH SELECTING A SITE Switch units can be mounted in a standard 19-inch equipment rack or on a flat surface. Be sure to follow the guidelines below when choosing a location. ◆ The site should: ■ be at the center of all the devices you want to link and near a power outlet.
CHAPTER 3 | Installing the Switch Ethernet Cabling ETHERNET CABLING To ensure proper operation when installing the switch into a network, make sure that the current cables are suitable for 10BASE-T, 100BASE-TX or 1000BASE-T operation.
CHAPTER 3 | Installing the Switch Equipment Checklist EQUIPMENT CHECKLIST After unpacking this switch, check the contents to be sure you have received all the components. Then, before beginning the installation, be sure you have all other necessary installation equipment.
CHAPTER 3 | Installing the Switch Mounting Figure 10: Attaching the Adhesive Feet 4. Set the device on a flat surface near an AC power source, making sure there are at least two inches of space on all sides for proper air flow. 5. If installing a single switch only, go to "Connecting to a Power Source" at the end of this chapter. 6. If installing multiple switches, attach four adhesive feet to each one. Place each device squarely on top of the one below, in any order.
CHAPTER 3 | Installing the Switch Installing an Optional SFP Transceiver INSTALLING AN OPTIONAL SFP TRANSCEIVER Figure 11: Inserting an SFP Transceiver into a Slot Powe r 1 Diag 2 3 4 5 7 9 6 8 10 The SFP slots support the following optional SFP transceivers: ◆ 1000BASE-SX ◆ 1000BASE-LX ◆ 1000BASE-LH To install an SFP transceiver, do the following: 1. Consider network and cabling requirements to select an appropriate SFP transceiver type. 2.
CHAPTER 3 | Installing the Switch Connecting to a Power Source NOTE: SFP transceivers are hot-swappable. The switch does not need to be powered off before installing or removing a transceiver. However, always first disconnect the network cable before removing a transceiver. NOTE: SFP transceivers are not provided in the switch package. CONNECTING TO A POWER SOURCE To connect a switch to a power source: 1. Insert the power cable plug directly into the AC socket located at the back of the switch.
CHAPTER 3 | Installing the Switch Connecting to the Console Port CONNECTING TO THE CONSOLE PORT This port is used to connect a console device to the switch through a serial cable. The console device can be a PC or workstation running a VT-100 terminal emulator, or a VT-100 terminal. A crossover RJ-45 to DB-9 cable is supplied with the unit for connecting to the console port, as illustrated below. The PIN assignments used to connect to the serial port are described below.
CHAPTER 3 | Installing the Switch Connecting to the Console Port ◆ Parity—None ◆ Stop bit—One ◆ Data bits—8 ◆ Flow control—none – 42 –
4 MAKING NETWORK CONNECTIONS CONNECTING NETWORK DEVICES The switch is designed to be connected to 10 or 100 Mbps network cards in PCs and servers, as well as to other switches and hubs. It may also be connected to remote devices using optional 1000BASE-SX, 1000BASE-LX, or 1000BASE-LH SFP transceivers. TWISTED-PAIR DEVICES Each device requires an unshielded twisted-pair (UTP) cable with RJ-45 connectors at both ends.
CHAPTER 4 | Making Network Connections Twisted-Pair Devices CONNECTING TO PCS, SERVERS, HUBS AND SWITCHES 1. Attach one end of a twisted-pair cable segment to the device’s RJ-45 connector. Figure 14: Making Twisted-Pair Connections 2. 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. (See the section “Fiber Optic SFP Devices.
CHAPTER 4 | Making Network Connections Fiber Optic SFP Devices FIBER OPTIC SFP DEVICES An optional Gigabit SFP transceiver (1000BASE-SX, 1000BASE-LX or 1000BASELH) 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. Each multimode fiber optic port requires 50/ 125 or 62.5/125 micron multimode fiber optic cabling with an LC connector at both ends.
CHAPTER 4 | Making Network Connections Fiber Optic SFP Devices Figure 15: Making Fiber Port Connections Power 1 Diag 2 3 4 5 7 9 6 8 10 27 4. As a connection is made, check the Link LED on the switch corresponding to the port to be sure that the connection is valid. The 1000BASE-SX, 1000BASE-LX, 1000BASE-LH fiber optic ports operate at 1 Gbps, full duplex, with auto-negotiation of flow control.
CHAPTER 4 | Making Network Connections Connectivity Rules CONNECTIVITY RULES When adding hubs (repeaters) to your network, please follow the connectivity rules listed in the manuals for these products. However, note that because switches break up the path for connected devices into separate collision domains, you should not include the switch or connected cabling in your calculations for cascade length involving other devices.
CHAPTER 4 | Making Network Connections Connectivity Rules Table 7: Maximum 1000BASE-LX Gigabit Ethernet Cable Length Fiber Size Fiber Bandwidth Maximum Cable Length Connector 9/125 micron singlemode fiber N/A 2 m - 5 km (7 ft - 3.2 miles) LC Table 8: Maximum 1000BASE-LH Gigabit Ethernet Cable Length Fiber Size Fiber Bandwidth Maximum Cable Length Connector 9/125 micron singlemode fiber N/A 2 m - 70 km (7 ft - 43.
CHAPTER 4 | Making Network Connections 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.
CHAPTER 4 | Making Network Connections Cable Labeling and Connection Records – 50 –
A TROUBLESHOOTING DIAGNOSING SWITCH INDICATORS Table 11: 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. DIAG LED Flashing Yellow ◆ ◆ Power cycle the switch to try and clear the condition. Link LED is Off ◆ ◆ Verify that the switch and attached device are powered on. ◆ If the switch is installed in a rack, check the connections to the punch-down block and patch panel.
APPENDIX A | Troubleshooting Power and Cooling Problems 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. If you still cannot isolate the problem, the internal power supply may be defective.
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. Also, an RJ-45 connector must be attached to both ends of the cable. CAUTION: DO NOT plug a phone jack connector into any RJ-45 port.
APPENDIX B | Cables Twisted-Pair Cable and Pin Assignments 10BASE-T/100BASE-TX PIN ASSIGNMENTS Use unshielded twisted-pair (UTP) or shielded twisted-pair (STP) cable for RJ-45 connections: 100-ohm Category 3 or better cable for 10 Mbps connections, or 100-ohm Category 5 or better cable for 100 Mbps connections. Also be sure that the length of any twisted-pair connection does not exceed 100 meters (328 feet).
APPENDIX B | Cables Twisted-Pair Cable and Pin Assignments Figure 17: Straight-through Wiring EIA/TIA 568B RJ-45 Wiring Standard 10/100BASE-TX Straight-through Cable White/Orange Stripe Orange End A White/Green Stripe 1 2 3 4 5 6 7 8 Blue White/Blue Stripe Green White/Brown Stripe 1 2 3 4 5 6 7 8 End B Brown CROSSOVER WIRING If the twisted-pair cable is to join two ports and either both ports are labeled with an “X” (MDI-X) or neither port is labeled with an “X” (MDI), a crossover must be implement
APPENDIX B | Cables Twisted-Pair Cable and Pin Assignments 1000BASE-T PIN ASSIGNMENTS All 1000BASE-T ports support automatic MDI/MDI-X operation, so you can use straight-through cables for all network connections to PCs or servers, or to other switches or hubs. The table below shows the 1000BASE-T MDI and MDI-X port pinouts. These ports require that all four pairs of wires be connected. Note that for 1000BASE-T operation, all four pairs of wires are used for both transmit and receive.
APPENDIX B | Cables Fiber Standards ADJUSTING EXISTING CATEGORY 5 CABLING TO RUN 1000BASE-T If your existing Category 5 installation does not meet one of the test parameters for 1000BASE-T, there are basically three measures that can be applied to try and correct the problem: 1. Replace any Category 5 patch cables with high-performance Category 5e or Category 6 cables. 2. Reduce the number of connectors used in the link. 3. Reconnect some of the connectors in the link.
APPENDIX B | Cables Fiber Standards Table 14: Fiber Standards (Continued) ITU-T Standard Description Application G.654 1550-nm Loss-Minimized Fiber Single-mode, 9/125-micron core Extended long-haul applications. Optimized for high-power transmission in the 1500 to 1600-nm region, with low loss in the 1550-nm band. G.655 Non-Zero Dispersion-Shifted Fiber Single-mode, 9/125-micron core Extended long-haul applications.
C SPECIFICATIONS PHYSICAL CHARACTERISTICS PORTS 24 10/100/1000BASE-T, with auto-negotiation 4 10/100/1000BASE-T shared with two SFP transceiver slots NETWORK INTERFACE Ports 1-28: RJ-45 connector, auto MDI/X 10BASE-T: RJ-45 (100-ohm, UTP cable; Category 3 or better) 100BASE-TX: RJ-45 (100-ohm, UTP cable; Category 5 or better) 1000BASE-T: RJ-45 (100-ohm, UTP or STP cable; Category 5, 5e or 6) *Maximum Cable Length - 100 m (328 ft) BUFFER ARCHITECTURE 64KB packet buffer per port AGGREGATE 56 Gbps BANDWI
APPENDIX C | Specifications Physical Characteristics WEIGHT 0.9 kg (1.98 lbs) SIZE (W x D x H): 195 mm x 115 mm x 36 mm (7.68 x 4.53 x 1.42 inches) TEMPERATURE Operating: 0°C to 45°C (32°F to 113°F) Storage: -40°C to 70°C (-40°F to 158°F) HUMIDITY Operating: 10% to 90% (non-condensing) AC INPUT 100 to 240 V, 50-60 Hz, 2A POWER SUPPLY Internal, auto-ranging transformer: 100 to 240 VAC, 50 to 60 Hz POWER CONSUMPTION 32 Watts maximum MAXIMUM CURRENT 0.25 A @ 100 VAC 0.
APPENDIX C | Specifications Switch Features SWITCH FEATURES FORWARDING MODE Store-and-forward THROUGHPUT Wire speed FLOW CONTROL Full Duplex: IEEE 802.
APPENDIX C | Specifications Standards STANDARDS IEEE 802.3-2005 Ethernet, Fast Ethernet, Gigabit Ethernet Full-duplex flow control Link Aggregation Control Protocol IEEE 802.1D -2004 Spanning Tree Protocol Rapid Spanning Tree Protocol Multiple Spanning Tree Protocol ISO/IEC 8802-3 COMPLIANCES EMISSIONS EN55022 (CISPR 22) Class A EN 61000-3-2/3 FCC Class A CE Mark IMMUNITY EN 61000-4-2/3/4/5/6/8/11 SAFETY CSA (CSA 22.
GLOSSARY 10BASE-T IEEE 802.3 specification for 10 Mbps Ethernet over two pairs of Category 3, 4, or 5 UTP cable. 100BASE-TX IEEE 802.3u specification for 100 Mbps Ethernet over two pairs of Category 5 UTP cable. 1000BASE-LH Specification for long-haul Gigabit Ethernet over two strands of 9/125 micron core fiber cable. 1000BASE-LX IEEE 802.3z specification for Gigabit Ethernet over two strands of 50/125, 62.5/ 125 or 9/125 micron core fiber cable. 1000BASE-SX IEEE 802.
GLOSSARY BANDWIDTH The difference between the highest and lowest frequencies available for network signals. Also synonymous with wire speed, the actual speed of the data transmission along the cable. 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.
GLOSSARY IEEE Institute of Electrical and Electronic Engineers. IEEE 802.3 Defines carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications. IEEE 802.3AB Defines CSMA/CD access method and physical layer specifications for 1000BASE-T Gigabit Ethernet. (Now incorporated in IEEE 802.3-2002.) IEEE 802.3U Defines CSMA/CD access method and physical layer specifications for 100BASETX Fast Ethernet. (Now incorporated in IEEE 802.3-2002.) IEEE 802.
GLOSSARY MEDIA ACCESS CONTROL (MAC) A portion of the networking protocol that governs access to the transmission medium, facilitating the exchange of data between network nodes. MIB An acronym for Management Information Base. It is a set of database objects that contains information about the device. MODAL BANDWIDTH Bandwidth for multimode fiber is referred to as modal bandwidth because it varies with the modal field (or core diameter) of the fiber.
GLOSSARY UDP packets are delivered just like IP packets – connection-less datagrams that may be discarded before reaching their targets. UDP is useful when TCP would be too complex, too slow, or just unnecessary. UTP Unshielded twisted-pair cable. VIRTUAL LAN (VLAN) A Virtual LAN is a collection of network nodes that share the same collision domain regardless of their physical location or connection point in the network.
GLOSSARY – 68 –
INDEX NUMERICS D 10 Mbps connectivity rules 48 100 Mbps connectivity rules 48 1000 Mbps connectivity rules 47 1000BASE-LH fiber cable Lengths 48 1000BASE-LX fiber cable Lengths 48 1000BASE-SX fiber cable Lengths 47 1000BASE-T pin assignments 56 ports 25 100BASE-TX, cable lengths 48 10BASE-T, cable lengths 48 desktop mounting 37 device connections 43 E electrical interference, avoiding 35 equipment checklist 37 Ethernet connectivity rules 48 F Fast Ethernet connectivity rules features 61 fiber cables 4
INDEX M management agent 24 features 61 out-of-band 24 SNMP 24 web-based 24 mounting the switch in a rack 37 on a desktop or shelf 37 multimode fiber optic cables 45 specifications compliances 62 environmental 60 power 60 standards compliance 62 IEEE 62 status LEDs 26 surge suppressor, using 35 switch architecture 24 switching method 24 T N Telnet 52 troubleshooting in-band access 52 power and cooling problems twisted-pair connections 43 network connections 43 45 examples 30 , O out-of-band manageme
ES3510MA E022010-DT-R01 149100000046A
