ES3528MV2 ES3528MV2-DC 28-Port Fast Ethernet Layer 2 Switch Installation Guide www.edge-core.
INSTALLATION GUIDE FAST ETHERNET LAYER 2 SWITCH Layer 2 Switch with 24 10/100BASE-TX (RJ-45) Ports, and 4 Combination Gigabit (RJ-45/SFP) Ports ES3528MV2 ES3528MV2-DC E082013-KS-R03
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 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. AUGUST 2013 REVISION Added Declaration of Conformance (DoC) on the back of the guide. DECEMBER 2011 REVISION This is the second revision of this guide. This revision includes the following changes: ◆ Added information for the DC version of the switch. NOVEMBER 2011 REVISION This is the first revision of this guide.
CONTENTS COMPLIANCES AND SAFETY STATEMENTS 1 ABOUT THIS GUIDE 15 CONTENTS 17 TABLES 21 FIGURES 23 INTRODUCTION 25 Overview 25 Switch Architecture 26 Network Management Options 26 Description of Hardware 26 10/100BASE-T Ports 26 SFP Slots 27 Port and System Status LEDs 27 Power Supply Socket 29 Application Examples 2 5 30 Network Aggregation Plan 30 Remote Connection with Fiber Cable 31 INSTALLING THE SWITCH 33 Selecting a Site 33 Ethernet Cabling 34 Equipment Check
CONTENTS 3 A B Rack Mounting 36 Desktop or Shelf Mounting 38 Installing an Optional SFP Transceiver 39 Connecting to a Power Source 40 Connecting DC Power 40 Connecting AC Power 42 Connecting to the Console Port 43 Wiring Map for Serial Cable 43 MAKING NETWORK CONNECTIONS 45 Connecting Network Devices 45 Twisted-Pair Devices 45 Cabling Guidelines 45 Connecting to PCs, Servers, Hubs and Switches 46 Network Wiring Connections 47 Fiber Optic SFP Devices 48 Connectivity Rules
CONTENTS C Crossover Wiring 57 1000BASE-T Pin Assignments 58 Fiber Standards 59 SPECIFICATIONS 61 Physical Characteristics 61 Switch Features 63 Management Features 63 Standards 63 Compliances 64 GLOSSARY 65 INDEX 71 – 19 –
CONTENTS – 20 –
TABLES Table 1: Port Status LEDs 27 Table 2: System Status LEDs 28 Table 3: Console Cable Wiring 43 Table 4: Maximum 1000BASE-T Gigabit Ethernet Cable Length 50 Table 5: Maximum 1000BASE-SX Gigabit Ethernet Cable Lengths 50 Table 6: Maximum 1000BASE-LX Gigabit Ethernet Cable Length 50 Table 7: Maximum 1000BASE-LH Gigabit Ethernet Cable Length 50 Table 8: Maximum Fast Ethernet Cable Lengths 51 Table 9: Maximum Ethernet Cable Length 51 Table 10: Troubleshooting Chart 53 Table 11
TABLES – 22 –
FIGURES Figure 1: Front and Rear Panels 25 Figure 2: Port Status LEDs 27 Figure 3: System Status LED 28 Figure 4: AC Power Supply Socket 29 Figure 5: DC Power Supply Socket 29 Figure 6: Network Aggregation Plan 31 Figure 7: Remote Connections with Fiber Cable 32 Figure 8: RJ-45 Connections 34 Figure 9: Attaching the Brackets 37 Figure 10: Installing the Switch in a Rack 37 Figure 11: Attaching the Adhesive Feet 38 Figure 12: Inserting an SFP Transceiver into a Slot 39 Fi
FIGURES – 24 –
1 INTRODUCTION OVERVIEW The ES3528MV2 and ES3528MV2-DC are intelligent switches with 24 10/ 100BASE-T ports, and four Gigabit combination ports1 that are comprised of an RJ-45 port and an SFP transceiver slot. There is also an SNMP-based management agent embedded on the main board. This agent supports both inband and out-of-band access for managing the switch.
CHAPTER 1 | Introduction Description of Hardware 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. The switch uses store-and-forward switching to ensure maximum data integrity.
CHAPTER 1 | Introduction Description of Hardware Each port also supports auto-negotiation of flow control, so the switch can automatically prevent port buffers from becoming saturated. SFP SLOTS The Small Form Factor Pluggable (SFP) transceiver slots are shared with four of the RJ-45 ports. In its default configuration, if an SFP transceiver (purchased separately) is installed in a slot and has a valid link on its port, the associated RJ-45 port is disabled and cannot be used.
CHAPTER 1 | Introduction Description of Hardware Table 1: Port Status LEDs (Continued) LED Condition Status Combination Gigabit Ports Link/ACT (Link/Activity) 1000M On/Blinking Green The port has a valid 10/100/1000 Mbps link. Blinking indicates activity. Off There is no valid link on the port. On/Blinking Green The port has a valid 1000 Mbps link. Blinking indicates activity. Off There is no valid 1000 Mbps link on the port.
CHAPTER 1 | Introduction Description of Hardware POWER SUPPLY SOCKET The ES3528MV2 switch includes both AC and DC power versions. There is one standard power socket on the rear panel of the AC-powered switch for the AC power cord. Figure 4: AC Power Supply Socket AC Power Socket There is one 4-pin DC power socket on the rear panel of the DC-powered switch that supports dual DC power connections.
CHAPTER 1 | Introduction Application Examples APPLICATION EXAMPLES This switch is an excellent choice for mixed Ethernet, Fast Ethernet, and Gigabit Ethernet installations where significant growth is expected in the near future. In a basic stand-alone configuration, it can provide direct full-duplex connections to workstations or servers.
CHAPTER 1 | Introduction Application Examples Figure 6: Network Aggregation Plan 1000 Mbps 10/100 Mbps Server Farm 25 27 ES3528MV2 1000M 1 3 5 7 9 2 4 6 8 10 12 14 16 18 20 22 24 Link/ACT 11 13 15 17 19 21 23 DIAG Console Link/ACT 26 28 25 27 ES3528MV2 3 5 7 9 2 4 6 8 10 12 14 16 18 20 22 24 25 27 ES3528MV2 1000M 1 1000M Link/ACT 11 13 15 17 19 21 23 DIAG Console 1000M PWR 1 3 5 7 9 2 4 6 8 10 12 14 16 18 20 22 24 Link/ACT 11 13 15 17 19 21 23 DIAG 100
CHAPTER 1 | Introduction Application Examples Figure 7: Remote Connections with Fiber Cable 1000 Mbps 10/100 Mbps Server Farm 25 27 ES3528MV2 1000M 1 3 5 7 9 2 4 6 8 10 12 14 16 18 20 22 24 Link/ACT 11 13 15 17 19 21 23 DIAG Console 1000M PWR Link/ACT 26 28 1000BASE-SX MMF (550 m) Remote Switch 3 5 7 9 2 4 6 8 10 12 14 16 18 20 22 24 25 27 ES3528MV2 1000M 1 1000M Link/ACT 11 13 15 17 19 21 23 DIAG Console Remote Switch 25 27 ES3528MV2 1000BASE-LX SMF (10 km) 1
2 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 2 | 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 2 | Installing the Switch Equipment Checklist EQUIPMENT CHECKLIST After unpacking the 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 2 | Installing the Switch Mounting MOUNTING The switch units 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: ◆ Temperature: Since the temperature within a rack assembly may be higher than the ambient room temperature, check that the rackenvironment temperature is within the specified operating temperature range.
CHAPTER 2 | Installing the Switch Mounting Figure 9: Attaching the Brackets 2. Mount the device in the rack, using four rack-mounting screws (not provided). Figure 10: Installing the Switch in a Rack 3. If installing a single switch only, go to “Connecting to a Power Source” on page 40. 4. If installing multiple switches, mount them in the rack, one below the other, in any order.
CHAPTER 2 | Installing the Switch Mounting DESKTOP OR SHELF MOUNTING 1. Attach the four adhesive feet to the bottom of the first switch. Figure 11: Attaching the Adhesive Feet 2 PWR Con sole DIAG 1 4 3 6 5 8 7 10 9 12 11 14 13 16 18 20 22 24 26 28 /ACT Link M 1000 /ACT Link 15 17 19 21 23 M 1000 25 27 8MV2 ES352 2. 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. 3.
CHAPTER 2 | Installing the Switch Installing an Optional SFP Transceiver INSTALLING AN OPTIONAL SFP TRANSCEIVER Figure 12: Inserting an SFP Transceiver into a Slot The switch supports 1000BASE-SX, 1000BASE-LX, 1000BASE-LH and other SFPcompatible transceivers. To install an SFP transceiver, do the following: 1. Consider network and cabling requirements to select an appropriate SFP transceiver type. 2. Insert the transceiver with the optical connector facing outward and the slot connector facing down.
CHAPTER 2 | Installing the Switch Connecting to a Power Source CONNECTING TO A POWER SOURCE The switch includes both AC- and DC-powered models. CONNECTING DC POWER An external -48 VDC power supply must be connected to the DC power socket on the ES3528MV2-DC rear panel. CAUTION: Before wiring the DC plug or connecting power to the switch, ensure that power to the feed lines is turned off at the supply circuit breaker or disconnected from the power bus.
CHAPTER 2 | Installing the Switch Connecting to a Power Source 4. Twist the copper wire strands together to form a tight braid. If possible, solder the exposed braid of wire together for better conductivity. 5. Connect the external power feed and power ground/return lines to the DC plug (provided with the switch) as shown in Figure 13 below. The power leads are labeled on the rear of the switch, below the DC power connector.
CHAPTER 2 | Installing the Switch Connecting to a Power Source Figure 14: DC Power Socket 9. At the power source, turn on the power for the feed lines or power bus. 10. Check the front-panel LEDs as the switch is powered on to be sure the PWR LED is on. If not, recheck the power supply and power cable connections at the supply source and on the switch. CONNECTING AC POWER To connect the switch to an AC power source: 1.
CHAPTER 2 | Installing the Switch Connecting to the Console Port NOTE: For International use, you may need to change the AC line cord. You must use a line cord set that has been approved for the socket type in your country. 3. As the switch is powered on, check the front-panel LEDs to be sure the PWR LED is on. If not, check that the power cable is correctly plugged in.
CHAPTER 2 | Installing the Switch Connecting to the Console Port The serial port’s configuration requirements are as follows: ◆ Default Baud rate—9,600 bps ◆ Character Size—8 Characters ◆ Parity—None ◆ Stop bit—One ◆ Data bits—8 – 44 –
3 MAKING NETWORK CONNECTIONS CONNECTING NETWORK DEVICES This switch is designed to interconnect multiple segments (or collision domains). It can be connected to network cards in PCs and servers, as well as to hubs, switches or routers. It may also be connected to devices using optional SFP tranceivers. TWISTED-PAIR DEVICES Each device requires an unshielded twisted-pair (UTP) cable with RJ-45 connectors at both ends.
CHAPTER 3 | 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 17: Making Twisted-Pair Connections 2. If the device is a PC 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 "Network Wiring Connections" on page 47.
CHAPTER 3 | Making Network Connections Twisted-Pair Devices NETWORK WIRING CONNECTIONS Today, the punch-down block is an integral part of many of the newer equipment racks. It is actually part of the patch panel. Instructions for making connections in the wiring closet with this type of equipment follows. 1. Attach one end of a patch cable to an available port on the switch, and the other end to the patch panel. 2.
CHAPTER 3 | Making Network Connections Fiber Optic SFP Devices 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 multimode fiber optic port requires 50/125 or 62.5/125 micron multimode fiber optic cabling with an LC connector at both ends. Each single-mode fiber port requires 9/125 micron single-mode fiber optic cable with an LC connector at both ends.
CHAPTER 3 | Making Network Connections Connectivity Rules Figure 19: Making Fiber Port Connections 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 and 1000BASE-LH fiber optic ports operate at 1 Gbps full duplex, with auto-negotiation of flow control.
CHAPTER 3 | Making Network Connections Connectivity Rules recommendations for Category 5. Therefore, the first step in preparing existing Category 5 cabling for running 1000BASE-T is a simple test of the cable installation to be sure that it complies with the IEEE 802.3ab standards.
CHAPTER 3 | Making Network Connections Cable Labeling and Connection Records 100 MBPS FAST ETHERNET COLLISION DOMAIN Table 8: Maximum Fast Ethernet Cable Lengths Type Cable Type Max. Cable Length Connector 100BASE-TX Category 5 or better 100-ohm UTP or STP 100 m (328 ft) RJ-45 10 MBPS ETHERNET COLLISION DOMAIN Table 9: Maximum Ethernet Cable Length Type Cable Type Max.
CHAPTER 3 | Making Network Connections Cable Labeling and Connection Records ◆ Label each separate piece of equipment. ◆ Display a copy of your equipment map, including keys to all abbreviations at each equipment rack.
A TROUBLESHOOTING DIAGNOSING SWITCH INDICATORS Table 10: Troubleshooting Chart Symptom Action PWR LED is Off ◆ ◆ Power supply is disconnected. ◆ Contact your dealer for assistance. ◆ Verify that the switch and attached device are powered on. ◆ Be sure the cable is plugged into both the switch and corresponding device. ◆ Verify that the proper cable type is used and its length does not exceed specified limits.
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, and verify that the fans on the unit are unobstructed and running prior to shutdown.
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 21: 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 13: 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 10/100BASE-TX, with auto-negotiation 4 Combination Gigabit Ports (RJ-45/SFP) NETWORK INTERFACE Ports 1-24: 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) Ports 25-28: 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 cable; Cat
APPENDIX C | Specifications Physical Characteristics WEIGHT 2 kg (4.41 lbs) SIZE 4.3 x 44 x 17.1 cm (1.7 x 17.3 x 6.7 in.) TEMPERATURE Operating: 0 to 55 °C (32 to 131 °F) Storage: -20 to 70 °C (-4 to 158 °F) HUMIDITY Operating: 5% to 95% (non-condensing) POWER SUPPLY ES3528MV2 Internal, auto-ranging transformer: 100 to 240 V, 50-60 Hz, 0.8 A ES3528MV2-DC Internal, DC power module: -36 to -60 VDC, 0.3 A POWER CONSUMPTION 30 Watts maximum MAXIMUM CURRENT ES3528MV2 0.25 A @ 115 VAC 0.
APPENDIX C | Specifications Switch Features SWITCH FEATURES FORWARDING MODE Store-and-forward THROUGHPUT Wire speed FLOW CONTROL Full Duplex: IEEE 802.3x Half Duplex: Back pressure MANAGEMENT FEATURES IN-BAND MANAGEMENT Telnet, SSH, HTTP, or SNMP manager OUT-OF-BAND MANAGEMENT RS-232 DB-9 console port SOFTWARE LOADING HTTP or FTP/TFTP in-band, or XModem out-of-band STANDARDS IEEE 802.3 Ethernet IEEE 802.
APPENDIX C | Specifications Compliances IEEE 802.3z and 802.3ab Gigabit Ethernet IEEE 802.1D (Bridging) IEEE 802.3x full-duplex flow control IEEE 802.
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 802.3u specification for 100 Mbps Ethernet over two strands of 50/125, 62.5/125 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. 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.
GLOSSARY AUTO-NEGOTIATION Signalling method allowing each node to select its optimum operational mode (e.g., speed and duplex mode) based on the capabilities of the node to which it is connected. 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.
GLOSSARY GIGABIT ETHERNET A 1000 Mbps network communication system based on Ethernet and the CSMA/ CD access method. 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 802.3-2005.) IEEE 802.
GLOSSARY LOCAL AREA NETWORK (LAN) A group of interconnected computer and support devices. 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.
GLOSSARY USER DATAGRAM PROTOCOL (UDP) UDP provides a datagram mode for packet-switched communications. It uses IP as the underlying transport mechanism to provide access to IP-like services. 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.
GLOSSARY – 70 –
INDEX device connections NUMERICS 10 Mbps connectivity rules 51 1000BASE-LH fiber cable Lengths 1000BASE-LX fiber cable Lengths 1000BASE-SX fiber cable Lengths 1000BASE-T pin assignments 58 ports 26 100BASE-TX ports 26 100BASE-TX, cable lengths 51 10BASE-T ports 26 10BASE-T, cable lengths 51 50 50 50 45 E electrical interference, avoiding 33 equipment checklist 35 Ethernet connectivity rules 51 F features 63 fiber cables 48 G A grounding for racks adhesive feet, attaching 38 air flow requirements 3
INDEX mounting the switch in a rack 36 on a desktop or shelf 38 multimode fiber optic cables 48 N temperature within a rack 36 troubleshooting in-band access 54 power and cooling problems twisted-pair connections 45 W network connections 45 examples 30 Web-based management O out-of-band management 26 P package contents 35 pin assignments 55 1000BASE-T 58 10BASE-T/100BASE-TX 56 console port 43 DB-9 43 ports, connecting to 45 power connecting to DC supply 41 power, connecting to 42 R rack mounting 3
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