24PORT GIGABIT L2 INTELLIGENT SWITCH SF-2420GX
Installation Guide 24PORT GIGABIT L2 INTELLIGENT SWITCH Layer 2 Switch with 20 10/100/1000BASE-T (RJ-45) Ports, 4 Gigabit Combination Ports (RJ-45/SFP), and 2 10-Gigabit Extender Module Slots Installation Guide Version 1.
September, 2006
Compliances and Safety Warnings 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.
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.
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.
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.
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).
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.
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.
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Contents Chapter 1: Introduction Overview Switch Architecture Network Management Options Description of Hardware 10/100/1000BASE-T Ports SFP Slots 10 Gigabit Ethernet Module Slots Stacking Ports Port and System Status LEDs Optional Redundant Power Supply Power Supply Receptacles Optional Media Extender Modules Extender Module LED Features and Benefits Connectivity Expandability Performance Management Chapter 2: Network Planning Introduction to Switching Application Examples Collapsed Backbone Network Aggre
Contents Installing an Optional Module into the Switch Installing an Optional SFP Transceiver Connecting Switches in a Stack Stacking Topologies Connecting to a Power Source Connecting to the Console Port Wiring Map for Serial Cable Chapter 4: Making Network Connections Connecting Network Devices Twisted-Pair Devices Cabling Guidelines Connecting to PCs, Servers, Hubs and Switches Network Wiring Connections Fiber Optic SFP Devices 10 Gbps Fiber Optic Connections Connectivity Rules 1000BASE-T Cable Requireme
Contents Appendix C: Specifications Physical Characteristics Switch Features Management Features Standards Compliances Extender Modules 10GBASE Extender Module (XFP) Appendix D: German Instructions Eine Site Auswählen (Selecting a Site - German) Montage (Rack Mounting Instructions - German) Rack-Montage C-1 C-1 C-2 C-2 C-3 C-3 C-3 C-3 B-1 B-1 B-2 B-2 Glossary Index xi
Tables Table 1-1 Table 1-2 Table 1-3 Table 1-4 Table 1-5 Table 3-1 Table 4-1 Table 4-2 Table 4-3 Table 4-4 Table 4-5 Table 4-6 Table 4-7 Table 4-8 Table 4-9 Table A-1 Table A-2 Table B-1 Table B-2 xii Supported SFP Transceivers Port Status LEDs System Status LEDs Supported XFP Transceivers Module LED Serial Cable Wiring Maximum 10GBASE-SR 10 Gigabit Ethernet Cable Length Maximum 10GBASE-LR 10 Gigabit Ethernet Cable Length Maximum 10GBASE-ER 10 Gigabit Ethernet Cable Length Maximum 1000BASE-T Gigabit Ether
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 3-9 Figure 4-1 Figure 4-2 Figure 4-3 Figure 4-4 Figure B-1 Figure B-2 Figure B-3 Front and Rear Panels Port LEDs System LEDs Power Supply Receptacles Single-Port 10GBASE Module (XFP) Collapsed Backbone Network Aggregation Plan Remote Connections with Fiber Cable Making VLAN Connections RJ-45 Connections Atta
Figures xiv
Chapter 1: Introduction Overview The SF-2420GX is an intelligent Layer 2 switch with 24 10/100/1000BASE-T ports, four of which are combination ports* that are shared with four SFP transceiver slots (see Figure 1-1, Ports 21-24). The rear panel provides two slots for single-port 10 Gigabit Ethernet hot-swappable expansion modules, and two stacking ports. Units can be stacked up to eight high through the built-in stacking ports that provide a 48 Gbps stack backplane.
1 Introduction Switch Architecture The SF-2420GX 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.
Description of Hardware 1 Description of Hardware 10/100/1000BASE-T Ports The switch contains 24 RJ-45 ports that operate at 10 Mbps or 100 Mbps, half or full duplex, or at 1000 Mbps, full duplex. Because all ports on the switch support automatic MDI/MDI-X operation, 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 B-3.
1 Introduction Table 1-1 Supported SFP Transceivers (Continued) Media Standard Cable Diameter Wavelength Vendor (microns) (nm) Part Number Maximum Distance 1000BASE-LH Linksys MGBLH1 40 km Picolight PL-XPL-LC-L13-11 40 km 9/125 1310 10 Gigabit Ethernet Module Slots The switch includes two slots on the rear panel for hot-swappable single-port 10GBASE modules with XFP transceivers.
Description of Hardware 1 System Status LEDs Figure 1-3 System LEDs Table 1-3 System Status LEDs LED Condition Status Power Green Internal power is operating normally. Amber Internal power supply failure. Off Power off or failure. Diag RPS Stack Master Stack Link Module Flashing Green System self-diagnostic test in progress. Green System self-diagnostic test successfully completed. Amber System self-diagnostic test has detected a fault.
1 Introduction Table 1-3 System Status LEDs (Continued) LED Condition Status Stack ID 1-8 Indicates the switch stack ID. The Master unit is numbered 1. (Note that If the master unit fails and a backup unit takes over, the stack IDs do not change.) Slave units are numbered 2-8. Off In standalone mode. Optional Redundant Power Supply The switch supports an optional Redundant Power Supply (RPS), that can supply power to the switch in the event the internal power supply fails.
Description of Hardware 1 Optional Media Extender Modules 10GBASE XFP Module Figure 1-5 Single-Port 10GBASE Module (XFP) The module’s XFP slot supports standard 10 Gigabit Ethernet (10G) XFP transceivers. The 10GBASE transceivers operate at 10 Gbps full duplex with support for flow control.
1 Introduction Features and Benefits Connectivity • 24 10/100/1000 Mbps ports for easy Gigabit Ethernet integration and for protection of your investment in legacy LAN equipment. • Auto-negotiation enables each RJ-45 port to automatically select the optimum communication mode (half or full duplex) if this feature is supported by the attached device; otherwise the port can be configured manually. • RJ-45 10/100/1000BASE-T ports support auto MDI/MDI-X pinout selection.
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. These switches have, therefore, been recognized as one of the most important building blocks for today’s networking technology.
2 Network Planning Application Examples The SF-2420GX 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.
Application Examples 2 Network Aggregation Plan With 24 parallel bridging ports (i.e., 24 distinct collision domains), a switch stack can collapse a complex network down into a single efficient bridged node, increasing overall bandwidth and throughput. In the figure below, the 10/100/1000BASE-T ports in a stack of SF-2420GX switches are providing 1000 Mbps connectivity through other switches. In addition, the switches are also connecting several servers at 10 Gbps.
2 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 switch stack to serve as a collapsed backbone, providing direct connectivity for a widespread LAN.
Application Examples 2 Making VLAN Connections The 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.
2 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. As a general rule, the length of fiber optic cable for a single switched link should not exceed: • • • • • • 1000BASE-SX: 550 m (1805 ft) for multimode fiber 1000BASE-LX: 5 km (3.1 miles) for single-mode fiber 1000BASE-LH: 70 km (43.
Chapter 3: Installing the Switch Selecting a Site Switches 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.
3 Installing the Switch RJ-45 Connector Figure 3-1 RJ-45 Connections 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.
Mounting 3 Mounting A switch unit 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-1.
3 2. Installing the Switch Mount the device in the rack, using four rack-mounting screws (not provided). Figure 3-3 Installing the Switch in a Rack 3. If installing a single switch only, turn to “Connecting to a Power Source” 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 an RPS, mount it in the rack below the other devices.
Installing an Optional Module into the Switch 3 3. If installing a single switch only, go to “Connecting to a Power Source” at the end of this chapter. 4. If installing multiple switches, attach four adhesive feet to each one. Place each device squarely on top of the one below, in any order. 5. If also installing an RPS, place it close to the stack.
3 Installing the Switch Installing an Optional SFP Transceiver 22 23 24 Figure 3-6 Inserting an SFP Transceiver into a Slot The switch supports 1000BASE-SX and 1000BASE-LX, and 1000BASE-LH SFP-compatible 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.
Connecting Switches in a Stack 3 Connecting Switches in a Stack Figure 3-7 shows how the stack cables are connected between switches in a stack. Each stacking connection is a 48 Gbps full-duplex high-speed serial link using proprietary stacking cables. The switch supports a line- and ring-topology stacking configuration, or can be used stand alone. To ensure minimal disruption in case a unit or stacking cable fails, it is recommended to always use a ring-topology.
3 5. Installing the Switch Select the Master unit in the stack by pressing the Master button in on only one of the switches. Only one switch in the stack can operate as the Master, all other units operate in slave mode. If more than one switch in the stack is selected as Master, or if no switches are selected, the system will select the unit with the lowest MAC address as the Master. Stacking Topologies All units in the stack must be connected via stacking cable.
Connecting to the Console Port 3 3. Check the front-panel LEDs as the device is powered on to be sure the Power LED is on. If not, check that the power cable is correctly plugged in. 4. If you have purchased a Redundant Power Supply, connect it to the switch and to an AC power source now, following the instructions included with the package. Connecting to the Console Port The RJ-45 serial port on the switch’s front panel is used to connect to the switch for out-of-band console configuration.
3 3-10 Installing the Switch
Chapter 4: Making Network Connections Connecting Network Devices The switch is designed to interconnect multiple network 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 XFP or SFP transceivers. Twisted-Pair Devices Each device requires an unshielded twisted-pair (UTP) cable with RJ-45 connectors at both ends.
4 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 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 4-2.) Otherwise, attach the other end to an available port on the switch.
Fiber Optic SFP Devices 4 Equipment Rack (side view) Network Switch 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 w it c h 10 /1 0 0 6724L3 ES4524C Punch-Down Block Patch Panel Wall Figure 4-2 Network Wiring 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.
4 Making Network Connections 1. Remove and keep the LC port’s rubber cover. When not connected to a fiber cable, the rubber cover should be replaced to protect the optics. 2. Check that the fiber terminators are clean. You can clean the cable plugs by wiping them gently with a clean tissue or cotton ball moistened with a little ethanol. Dirty fiber terminators on fiber cables will impair the quality of the light transmitted through the cable and lead to degraded performance on the port. 3.
10 Gbps Fiber Optic Connections 4 Note: When selecting a fiber device, considering safety, please make sure that it can function at a temperature that is not less than the recommended maximum operational temperature of the product. You must also use an approved Laser Class 1 SFP transceiver.
4 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 4 1000 Mbps Gigabit Ethernet Collision Domain Table 4-4 Maximum 1000BASE-T Gigabit Ethernet Cable Length Cable Type Maximum Cable Length Connector Category 5, 5e, 6 100-ohm UTP or STP 100 m (328 ft) RJ-45 Table 4-5 Maximum 1000BASE-SX Gigabit Ethernet Cable Length Fiber Size Fiber Bandwidth Maximum Cable Length Connector 62.
4 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 Power LED is Off • Check connections between the switch, the power cord, and the wall outlet. • Contact your dealer for assistance. Power LED is Amber • Internal power supply has failed. Contact your local dealer for assistance. Diag LED is Amber • Power cycle the switch to try and clear the condition. • If the condition does not clear, contact your local dealer for assistance.
A 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, and verify that the fans on the unit are unobstructed and running prior to shutdown.
Stack Troubleshooting A Stack Troubleshooting If a stack fails to initialize or function, first check the following items: • • • • Check that all stacking cables are properly connected. Check if any stacking cables appear damaged. Check that only one Stack Master button is pressed in. Check that all switches in the stack are powered on. After checking all items, reboot all the switches in the stack. Switches in the stack may be configured using a ring- or line-topology.
A A-4 Troubleshooting
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. 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.
B Cables Table B-1 10/100BASE-TX MDI and MDI-X Port Pinouts Pin MDI Signal Name MDI-X Signal Name 1 Transmit Data plus (TD+) Receive Data plus (RD+) 2 Transmit Data minus (TD-) Receive Data minus (RD-) 3 Receive Data plus (RD+) Transmit Data plus (TD+) 6 Receive Data minus (RD-) Transmit Data minus (TD-) 4,5,7,8 Not used Not used Note: The “+” and “-” signs represent the polarity of the wires that make up each wire pair.
Twisted-Pair Cable and Pin Assignments B You must connect all four wire pairs as shown in the following diagram to support Gigabit Ethernet connections.
B 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).
Appendix C: Specifications Physical Characteristics Ports 20 10/100/1000BASE-T, with auto-negotiation 4 10/100/1000BASE-T shared with 4 SFP transceiver slots 2 10GBASE extender module slots for XFP transceivers Two slots for stacking transceivers 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) 1000BASE-T: RJ-45 (100-ohm, UTP or STP cable; Category 5, 5e, or 6) *Maximum Cable Leng
C Specifications Humidity Operating: 35% to 85% (non-condensing) Storage: 10% to 95% (non-condensing) AC Input 100 to 240 V, 50-60 Hz, 2A Power Supply Internal, auto-ranging transformer: 100 to 240 VAC, 47 to 63 Hz External, supports connection for redundant power supply Power Consumption 54 Watts (without expansion modules) 66 Watts (with two expansion modules) Maximum Current 0.59 A @ 110 VAC (without expansion modules) 0.72 A @ 110 VAC (with two expansion modules) 0.
Standards C Software Loading TFTP in-band, or XModem out-of-band Standards IEEE 802.3-2005 Ethernet, Fast Ethernet, Gigabit Ethernet Full-duplex flow control IEEE 802.3ae 10 Gigabit Ethernet IEEE 802.1D Spanning Tree Protocol IEEE 802.1w Rapid Spanning Tree Protocol IEEE 802.1s Multiple Spanning Tree Protocol IEEE 802.
C Specifications Extender Modules 10GBASE Extender Module (XFP) Ports 1 slot for 10GBASE XFP transceiver Communication Speed 10 Gbps Communication Mode Full duplex Network Interface XFP slot Standards IEEE 802.
Appendix D: German Instructions Eine Site Auswählen (Selecting a Site - German) Die Schalter können in ein Standard-19-Zoll-Ausrüstungsgestell oder auf eine flache Ebene montiert werden. Zum Auswählen eines Standortes beachten Sie bitte die nachstehenden Richtlinien.
D German Instructions Montage (Rack Mounting Instructions - German) Switch-Einheiten können an ein standardmäßiges 19-Zoll Einrichtungsrack, einen Arbeitstisch oder ein Regal montiert werden. Folgend finden Sie die Montageanweisungen für jeden Positionstyp.
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 Fast Ethernet over two pairs of Category 5 or better UTP cable. 1000BASE-LH 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 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 A condition in which packets transmitted over the cable interfere with each other.
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 802.3-2005.) IEEE 802.3ae Defines the physical layer specifications for 10 Gigabit Ethernet. IEEE 802.
Glossary units of MHz per km, which indicates the amount of bandwidth supported by the fiber for a one km distance. Network Diameter Wire distance between two end stations in the same collision domain. Redundant Power Supply (RPS) A backup power supply unit that automatically takes over in case the primary power supply should fail. RJ-45 Connector A connector for twisted-pair wiring. Switched Ports Ports that are on separate collision domains or LAN segments.
Index Numerics 10 Gbps connectivity rules 4-6 10 Mbps connectivity rules 4-7 100 Mbps connectivity rules 4-7 1000 Mbps connectivity rules 4-7 1000BASE-LH fiber cable lengths 4-7 1000BASE-LX fiber cable lengths 4-7 1000BASE-SX fiber cable lengths 4-7 1000BASE-T pin assignments B-3 ports 1-3 100BASE-TX cable lengths 4-7 ports 1-3 10BASE-T ports 1-3 10BASE-T/100BASE-TX pin assignments B-1 10GBASE-ER fiber cable length 4-6 10GBASE-LR fiber cable length 4-6 modules 1-7 10GBASE-SR fiber cable length 4-6 modules 1
Index power requirements 3-1 problems A-2 RPU in racks 3-4 site requirements 3-1, B-1 wiring closet connections 4-2 10BASE-T/100BASE-TX B-1 console port 3-9 ports, connecting to 4-1 power, connecting to 3-8 problems, troubleshooting A-1 L R laser safety 4-3, 4-4 LC port connections 4-3, 4-4 LED indicators Diag 1-5 Module 1-5 Power 1-5 problems A-1 RPU 1-5 Stack ID 1-6 Stack Link 1-5 Stack Master 1-5 location requirements 3-1, B-1 rear panel receptacles 1-6 redundant power unit 1-6 RJ-45 port 1-3 connec
Index tagging 2-5 W web-based management 1-2 Index-3
Index Index-4
SF-2420GX E092006-CS-R01 150xxxxxxxxx
