TigerStack 10/100 48-Port 10/100Mbps Stackable Managed Switch ◆ 48 auto-MDI/MDI-X 10BASE-T/100BASE-TX ports ◆ 2 Gigabit RJ-45 ports shared with 2 SFP transceiver slots ◆ 2 Gigabit stacking ports that act as Ethernet ports in standalone mode ◆ Stacks up to 4 units ◆ 17.
TigerStack 10/100 Installation Guide From SMC’s Tiger line of feature-rich workgroup LAN solutions 38 Tesla Irvine, CA 92618 Phone: (949) 679-8000 February 2005 Pub.
Information furnished by SMC Networks, Inc. (SMC) is believed to be accurate and reliable. However, no responsibility is assumed by SMC for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SMC. SMC reserves the right to change specifications at any time without notice. Copyright © 2005 by SMC Networks, Inc. 38 Tesla Irvine, CA 92618 All rights reserved.
LIMITED WARRANTY Limited Warranty Statement: SMC Networks, Inc. (“SMC”) warrants its products to be free from defects in workmanship and materials, under normal use and service, for the applicable warranty term. All SMC products carry a standard 90-day limited warranty from the date of purchase from SMC or its Authorized Reseller. SMC may, at its own discretion, repair or replace any product not operating as warranted with a similar or functionally equivalent product, during the applicable warranty term.
LIMITED WARRANTY WARRANTIES EXCLUSIVE: IF AN SMC PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, CUSTOMER’S SOLE REMEDY SHALL BE REPAIR OR REPLACEMENT OF THE PRODUCT IN QUESTION, AT SMC’S OPTION. THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED, EITHER IN FACT OR BY OPERATION OF LAW, STATUTORY OR OTHERWISE, INCLUDING WARRANTIES OR CONDITIONS OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
COMPLIANCES 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.
COMPLIANCES CE Mark Declaration of Conformance for EMI and Safety (EEC) SMC contact for these products in Europe is: SMC Networks Europe, Edificio Conata II, Calle Fructuós Gelabert 6-8, 2o, 4a, 08970 - Sant Joan Despí, Barcelona, Spain.
COMPLIANCES 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 Important! Before making connections, make sure you have the correct cord set. Check it (read the label on the cable) against the following: 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.
COMPLIANCES 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 la terre (masse).
COMPLIANCES Stromkabel. Dies muss von dem Land, in dem es benutzt wird geprüft werden: Schweiz Dieser Stromstecker muß die SEV/ASE 1011Bestimmungen einhalten. Europe Das Netzkabel muß vom Typ HO3VVF3GO.75 (Mindestanforderung) sein und die Aufschrift oder 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.
COMPLIANCES 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. Waste reduction and safe disposal of all harmful un-recyclable by-products. Recycling of all reusable waste content.
COMPLIANCES x
TABLE OF CONTENTS 1 About the TigerStack 10/100 . . . . . . . . . . . . . . . . . . . . .1-1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Switch Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Network Management Options . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Description of Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TABLE OF CONTENTS Installing an Optional SFP Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . 3-8 Connecting Switches in a Stack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9 Stacking Topologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11 Connecting to a Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12 Connecting to the Console Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TABLE OF CONTENTS APPENDICES: A Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1 Diagnosing Switch Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1 Diagnosing Power Problems with the LEDs . . . . . . . . . . . . . . . A-2 Power and Cooling Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2 In-Band Access .
TABLES Table 1-1 Table 1-2 Table 3-1 Table 4-1 Table 4-2 Table 4-4 Table 4-5 Table 4-6 Table 4-3 Table A-1 Table A-2 Table B-1 Table B-2 Table D-1 Port Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 System Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7 Serial Cable Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13 Maximum 1000BASE-T Gigabit Ethernet Cable Length . .
FIGURES Figure 1-1 Figure 1-2 Figure 1-3 Figure 1-4 Figure 1-5 Figure 2-1 Figure 2-2 Figure 2-3 Figure 2-4 Figure 3-1 Figure 3-2 Figure 3-3 Figure 3-4 Figure 3-5 Figure 3-6 Figure 3-7 Figure 3-8 Figure 4-1 Figure 4-2 Figure 4-3 Figure B-1 Figure B-2 Figure B-3 Front and Rear Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Stacking Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 Port LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FIGURES xvi
CHAPTER 1 ABOUT THE TIGERSTACK 10/100 Overview SMC’s TigerStack SMC6248M is a stackable Fast Ethernet switch with 48 10BASE-T/100BASE-TX ports and two 1000BASE-T ports1 that operate in combination with two Small Form Factor Pluggable (SFP) transceiver slots (see Figure 1-1, Ports 49-50). The switch also provides two 1 Gbps built-in stacking ports for connecting up to four units in a stack. The stacking ports can also be used as normal Ethernet ports in standalone mode.
ABOUT THE TIGERSTACK 10/100 Port Status Indicators 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 System Indicators Stacking Ports 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 Slave Stack Master Uplink 49 52/Up 51/Down 50 51 PWR Diag RPU 52 Stack 49 10/100 Mbps RJ-45 Ports 50 Master 1000BASE-T/SFP Ports RPU Console DC 12V 4.
DESCRIPTION OF HARDWARE Network Management Options The SMC6248M switch contains a comprehensive array of LEDs for “at-a-glance” monitoring of network and port status. It also includes a management agent that allows you to configure or monitor the switch using its embedded management software, or via SNMP applications.
ABOUT THE TIGERSTACK 10/100 1000BASE-T/SFP Ports The SMC6248M contains two combination Gigabit RJ-45 ports that are shared with Small Form Factor Pluggable (SFP) transceiver slots (Ports 49-50, Figure 1-1 on page 1-2). If an SFP transceiver (purchased separately) is installed in a slot, the associated RJ-45 port is disabled. The switch can be configured to force the use of an RJ-45 port or SFP slot, as required.
DESCRIPTION OF HARDWARE Port and System Status LEDs The SMC6248M 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.
ABOUT THE TIGERSTACK 10/100 Table 1-1 LED Condition Port Status LEDs Status Gigabit Ethernet Ports (Ports 49-50, and Ports 51-52 when stacking is not implemented) (Link/ Activity) On/Flashing Amber 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.
DESCRIPTION OF HARDWARE Table 1-2 System Status LEDs LED Condition Status PWR On Green The unit’s internal power supply is operating normally. On Amber The unit’s internal power supply has failed. Off The unit has no power connected or the power supply has failed. Flashing Green The system diagnostic test is in progress. On Green The system diagnostic test has completed successfully. On Amber The system diagnostic test has detected a fault.
ABOUT THE TIGERSTACK 10/100 Power Supply Receptacles There are two power receptacles on the rear panel of the switch. The standard power receptacle is for the AC power cord. The receptacle labeled “RPU” is for the optional Redundant Power Unit3. RPU DC 12V 4.5A 100-240V~ 50-60Hz 2A Figure 1-5 Power Supply Receptacles Features and Benefits Connectivity • 48 dual-speed ports for easy Fast Ethernet integration and for protection of your investment in legacy LAN equipment.
FEATURES AND BENEFITS • Unshielded (UTP) cable supported on all RJ-45 ports: Category 3 or better for 10 Mbps connections, Category 5 or better for 100 Mbps connections, and Category 5, 5e or 6 for 1000 Mbps connections. • IEEE 802.3-2002 Ethernet, Fast Ethernet, Gigabit Ethernet compliance ensures compatibility with standards-based hubs, network cards and switches from any vendor. • Provides stacking capability via RJ-45 ports with 4 Gbps stacking bandwidth. Up to 4 units can be stacked together.
ABOUT THE TIGERSTACK 10/100 Management • “At-a-glance” LEDs for easy troubleshooting • Network management agent: • 1-10 - Manages switch in-band or out-of-band - Supports console, Telnet, SSH, SNMP, RMON 4 groups and web-based interface Slave units provide backup stack management.
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 SMC6248M 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 SMC6248M is an excellent choice for mixed Ethernet, Fast Ethernet, and Gigabit Ethernet installations where significant growth is expected in the near future.
APPLICATION EXAMPLES Network Aggregation Plan When used in standalone mode, this switch provides 52 parallel bridging ports (i.e., 52 distinct collision domains), which can be used to collapse a complex network down into a single efficient bridged node, increasing overall bandwidth and throughput. When up to four switch units are stacked together, they form a single “virtual” switch containing up to 200 ports. The whole stack can be managed through the Master unit using a single IP address.
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 1000BSE-LX (SMF) link up to 5 km, and a 1000BASE-ZX link up to 100 km. This allows a Gigabit Ethernet stack 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. VLANs can be based on untagged port groups, or traffic can be explicitly tagged to identify the VLAN group to which it belongs.
NETWORK PLANNING 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.
CHAPTER 3 INSTALLING THE SWITCH Selecting a Site TigerStack 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.
INSTALLING THE SWITCH 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. Check the following criteria against the current installation of your network: • Cable type: Unshielded twisted pair (UTP) or shielded twisted pair (STP) cables with RJ-45 connectors; Category 3 or better for 10BASE-T, Category 5 or better for 100BASE-TX, and Category 5, 5e or 6 for 1000BASE-T.
EQUIPMENT CHECKLIST Equipment Checklist After unpacking the TigerStack, 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.
INSTALLING THE SWITCH 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: • Temperature: Since the temperature within a rack assembly may be higher than the ambient room temperature, check that the rack-environment temperature is within the specified operating temperature range. (See page C-2.
MOUNTING To rack-mount devices: 1. Attach the brackets to the device using the screws provided in the Bracket Mounting Kit. 47 48 Sl av e St ac k M as te r Up lin k 51 /D ow n 52 /U p 49 49 50 51 50 PW R Di ag RP U 52 St ac M as k te r Figure 3-2 Attaching the Brackets 2. Mount the device in the rack, using four rack-mounting screws (not provided).
INSTALLING THE SWITCH 3. If installing a single switch only, turn to “Connecting Switches in a Stack” at the end of this chapter. 4. If installing multiple switches, mount them in the rack, one below the other, in any order. 5. If also installing RPUs, mount them in the rack below the other devices. Montage (Rack Mounting - German) SMC6248M Switch-Einheiten können an ein standardmäßiges 19-Zoll Einrichtungsrack, einen Arbeitstisch oder ein Regal montiert werden.
MOUNTING Desktop or Shelf Mounting 1. Attach the four adhesive feet to the bottom of the first switch. Mas k ter 52 Stac 50 51 50 49 49 52/U 51/D own Mas ter Slav 47 45 43 41 39 37 27 25 23 21 19 17 15 13 11 3 1 4 5 6 7 8 9 28 29 30 31 32 33 34 35 p Upli nk e Stac k 48 46 44 42 40 38 36 26 24 22 20 18 16 14 12 10 2 Figure 3-4 Attaching the Adhesive Feet 2.
INSTALLING THE SWITCH Installing an Optional SFP Transceiver S la ve S ta ck M as te r U pl in k 49 PWR 50 D ia g 51 RPU 52 S ta ck M as te r Figure 3-5 Installing an SFP Transceiver into a Slot The SFP slots support the following optional SFP transceivers: • 1000BASE-SX (SMCBGSLCX1) • 1000BASE-LX (SMCBGLLCX1) • 1000BASE-ZX (SMCBGZLCX1) To install an SFP transceiver, do the following: 1. Consider network and cabling requirements to select an appropriate SFP transceiver type. 2.
CONNECTING SWITCHES IN A STACK Connecting Switches in a Stack Figure 3-6 shows how the stack cables are connected between switches in a stack. Each stacking connection is a 2 Gbps full-duplex link using Category 5 Ethernet cables. The switch supports a line- and ring-topology stacking configuration, or can be used stand alone. In line-topology stacking there is a single stack cable connection between each switch that carries two-way communications across the stack.
INSTALLING THE SWITCH 5. (Optional) To form a ring topology stack, complete the connections by plugging one end of a stack cable into the Up port on the bottom unit and the other end into the Down port on the top unit. This forms a wrap-around topology. For a simple top to bottom chain topology ignore this step.
CONNECTING SWITCHES IN A STACK Stacking Topologies Line Topology – All units in the stack must be connected via stacking cable. You can connect units in a simple cascade configuration, connecting Down ports to Up ports, from the top to bottom unit. Using this “line” topology, if any link or unit in the stack fails, the stack is split into two separate segments.
INSTALLING THE SWITCH Connecting to a Power Source To connect a switch to a power source: 1. Insert the power cable plug directly into the AC receptacle located at the back of the switch. RPU DC 12V 4.5A 100-240V~ 50-60Hz 2A Figure 3-7 Power Receptacles 2. Plug the other end of the cable into a grounded, 3-pin, AC power source. 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 receptacle type in your country. 3.
CONNECTING TO THE CONSOLE PORT Connecting to the Console Port The DB-9 serial port on the switch’s rear 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.
INSTALLING THE SWITCH 3-14
CHAPTER 4 MAKING NETWORK CONNECTIONS Connecting Network Devices The SMC6248M 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 remote devices using the optional 1000BASE-SX, 1000BASE-LX, or 1000BASE-ZX SFP transceivers. Twisted-Pair Devices Each device requires an unshielded twisted pair (UTP) cable with RJ-45 connectors at both ends.
MAKING NETWORK CONNECTIONS 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 4-1 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 “Network Wiring Connections.”) Otherwise, attach the other end to an available port on the switch.
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.
MAKING NETWORK CONNECTIONS Fiber Optic SFP Devices An optional Gigabit SFP transceiver (1000BASE-SX, 1000BASE-LX, or 1000BASE-ZX) 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.
FIBER OPTIC SFP DEVICES 3. 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. S la ve S ta ck M as te r U pl in k 49 PWR 50 D ia g 51 RPU 52 S ta ck M as te r Figure 4-3 Making Fiber Port Connections 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.
MAKING NETWORK CONNECTIONS 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.
CONNECTIVITY RULES Table 4-3 Maximum 1000BASE-LX Gigabit Ethernet Cable Length Fiber Size Fiber Bandwidth Maximum Cable Length Connector 9/125 micron single-mode fiber N/A 2 m - 5 km (7 ft - 3.2 miles) LC Table 4-4 Maximum 1000BASE-ZX Gigabit Ethernet Cable Length Fiber Size Fiber Bandwidth Maximum Cable Length Connector 9/125 micron single-mode fiber N/A 70* - 100 km (43.5 - 62.
MAKING NETWORK CONNECTIONS 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. To best manage the physical implementations of your network, follow these guidelines: • Clearly label the opposing ends of each cable.
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 Diagnosing Power Problems with the LEDs The Power and RPU LEDs work in combination to indicate power status as follows. Table A-2 Power/RPU LEDs Power LED RPU LED Status Green Amber Internal power functioning normally; RPU plugged in but faulty. Green Off Internal power functioning normally; RPU not plugged in. Amber Green Internal power faulty; RPU delivering power. Off Off Both internal power and RPU unplugged or not functioning.
IN-BAND ACCESS In-Band Access You can access the management agent in the switch from anywhere within the attached network using Telnet, a web browser, or other network management software tools. However, you must first configure the switch with a valid IP address, subnet mask, and default gateway. If you have trouble establishing a link to the management agent, check to see if you have a valid network connection. Then verify that you entered the correct IP address.
TROUBLESHOOTING A-4
APPENDIX B CABLES Twisted-Pair Cable and Pin Assignments For 10/100BASE-TX connections, a 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: Each wire pair must be attached to the RJ-45 connectors in a specific orientation.
CABLES 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).
TWISTED-PAIR CABLE AND PIN ASSIGNMENTS Straight-Through Wiring If the twisted-pair cable is to join two ports and only one of the ports has an internal crossover (MDI-X), the two pairs of wires must be straight-through. (When auto-negotiation is enabled for any RJ-45 port on this switch, you can use either straight-through or crossover cable to connect to any device type.) We recommend connecting all four wire pairs as shown in the following diagram to ease an upgrade to Gigabit Ethernet.
CABLES Crossover Wiring If the twisted-pair cable is to join two ports and either both ports are labeled with an “X” (indicating MDI-X) or neither port is labeled with an “X” (which indicates MDI), a crossover must be implemented in the wiring. (When auto-negotiation is enabled for any RJ-45 port on this switch, you can use either straight-through or crossover cable to connect to any device type.
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.
CABLES Note that when testing your cable installation, be sure to include all patch cables between switches and end devices. 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.
APPENDIX C SPECIFICATIONS Physical Characteristics Ports 48 10/100BASE-TX, with auto-negotiation Two 10/100/1000BASE-T shared with two SFP transceiver slots Two 10/100/1000BASE-T or Stacking Ports (button selection) Network Interface Ports 1-48: 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 49-52: RJ-45 connector, auto MDI/X 10BASE-T: RJ-45 (100-ohm, UTP cable; Category 3 or better) 100BASE-TX: RJ-45
SPECIFICATIONS 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) AC Input 100 to 240 V, 50-60 Hz, 2A 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 Maximum Current 2.0 A @ 100 VAC 1.
MANAGEMENT FEATURES Management Features In-Band Management Web, Telnet, SSH, or SNMP manager Out-of-Band Management RS-232 DB-9 console port Software Loading TFTP in-band, or XModem out-of-band Standards IEEE 802.3-2002 Ethernet, Fast Ethernet, Gigabit Ethernet Full-duplex flow control IEEE 802.1D Spanning Tree Protocol IEEE 802.
SPECIFICATIONS Safety CSA/CUS (CSA 60950 & UL60950) TÜV/GS (EN60950-1) CB (IEC 60950-1) Warranty Limited Lifetime C-4
APPENDIX D ORDERING INFORMATION Table D-1 TigerStack 10/100 Products and Accessories Product Number Description SMC6248M 48 10/100BASE-TX port switch with two Gigabit combination ports with RJ-45 connectors which are shared with SFP transceiver slots, and 2 Gigabit stacking ports that can be used as normal Ethernet ports in standalone mode SMC6224M 24 10/100BASE-TX port switch with two Gigabit combination ports with RJ-45 connectors which are shared with SFP transceiver slots, and 2 Gigabit stacking po
ORDERING INFORMATION D-2
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-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 802.3z specification for Gigabit Ethernet over two strands of 50/ 125 or 62.5/125 micron core fiber cable. 1000BASE-T IEEE 802.
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 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.
Full Duplex Transmission method that allows two network devices to transmit and receive concurrently, effectively doubling the bandwidth of that link. 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.
LED Light emitting diode used for monitoring a device or network condition. 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.
TIA 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. 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-6
INDEX Numerics 10 Mbps connectivity rules 4-7 100 Mbps connectivity rules 4-7 1000 Mbps connectivity rules 4-6 1000BASE-LX fiber cable lengths 4-7 1000BASE-SX fiber cable lengths 4-6 1000BASE-ZX fiber cable lengths 4-7 100BASE cable lengths 4-7 100BASE-TX ports 1-3, 1-4 10BASE-T ports 1-3, 1-4 A accessories, ordering D-1 adhesive feet, attaching 3-7 air flow requirements 3-1 applications central wiring closet 2-3 collapsed backbone 2-2 remote connections with fiber 2-4 VLAN connections 2-5 B brackets, att
INDEX I N IEEE 802.3 Ethernet 1-9 IEEE 802.3ae 10 Gigabit Ethernet 1-9 IEEE 802.3u Fast Ethernet 1-9 IEEE 802.3x flow control 1-3 IEEE 802.
INDEX SNMP agent 1-3 specifications compliances C-3 environmental C-2 physical C-1 power C-2 standards compliance C-3 IEEE C-3 status LEDs 1-5 switch architecture 1-2 switching introduction to 2-1 method 1-2 T Telnet A-3 temperature within a rack 3-4 TigerStack 10/100 Products and Accessories D-1 troubleshooting in-band access A-3 power and cooling problems A-2 switch indicators A-1 twisted-pair connections 4-1 Index-3
INDEX Index-4
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