Digisol DG-FS4526E, MUSTANG 4000 Series Installation Manual

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MUSTANG 4000 SWITCH SERIES
DG-FS4526E
INSTALLATION GUIDE
V1.0
2012-04-12
As our products undergo continuous development the specifications are subject to change without prior notice
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NSTALLATION
G
UIDE
DG-FS4526E FAST ETHERNET SWITCH
Layer 2 Enhanced Managed Switch with 24 10/100BASE-TX (RJ-45) Ports, and 2 Gigabit Combination Ports (RJ-45/SFP)
DG-FS4526E
E042012
R01
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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).
CONVENTIONS
The following conventions are used throughout this guide to show information:
RELATED PUBLICATIONS
The following publication gives specific information on how to operate and use the management functions of the switch:
The Management Guide
Also, as part of the switch’s software, there is an online web-based help that describes all management related features.
N
OTE
:
Emphasizes important information or calls your attention to
related features or instructions.
C
AUTION
:
Alerts you to a potential hazard that could cause loss of data,
or damage the system or equipment.
W
ARNING
:
Alerts you to a potential hazard that could cause personal
injury.
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A
BOUT THIS GUIDE
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REVISION HISTORY
This section summarizes the changes in each revision of this guide.
APRIL 2012 REVISION
This is the first revision of this guide.
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CONTENTS
ABOUT THIS GUIDE 3
C
ONTENTS 5
T
ABLES 7
F
IGURES 9
1I
NTRODUCTION 11
Overview 11
Description of Hardware 13
2NETWORK PLANNING 31
Introduction to Switching 31
Application Examples 32
Application Notes 36
3INSTALLING THE SWITCH 37
Selecting a Site 37
Ethernet Cabling 38
Equipment Checklist 39
Mounting 40
Installing an Optional SFP Transceiver 44
Connecting to a Power Source 45
Connecting to the Console Port 46
4MAKING NETWORK CONNECTIONS 49
Connecting Network Devices 49
Twisted-Pair Devices 49
Fiber Optic SFP Devices 52
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C
ONTENTS
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Connectivity Rules 54
Cable Labeling and Connection Records 56
ATROUBLESHOOTING 57
Diagnosing Switch Indicators 57
Power and Cooling Problems 58
Installation 58
In-Band Access 58
BCABLES AND PINOUTS 59
Twisted-Pair Cable and Pin Assignments 59
Fiber Standards 63
CHARDWARE SPECIFICATIONS 65
Physical Characteristics 65
Switch Features 67
Management Features 67
GLOSSARY 69
I
NDEX 75
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TABLES
Table 1: Supported SFP Transceivers 13
Table 2: Port Status LEDs 15
Table 3: System Status LEDs 15
Table 4: Serial Cable Wiring 46
Table 5: Maximum 1000BASE-T Gigabit Ethernet Cable Length 54
Table 6: Maximum 1000BASE-SX Gigabit Ethernet Cable Lengths 54
Table 7: Maximum 1000BASE-LX Gigabit Ethernet Cable Length 55
Table 8: Maximum 1000BASE-LH Gigabit Ethernet Cable Length 55
Table 9: Maximum 100BASE-FX Cable Length 55
Table 10: Maximum Fast Ethernet Cable Lengths 55
Table 11: Maximum Ethernet Cable Length 55
Table 12: Troubleshooting Chart 57
Table 13: 10/100BASE-TX MDI and MDI-X Port Pinouts 60
Table 14: 1000BASE-T MDI and MDI-X Port Pinouts 62
Table 15: Fiber Standards 63
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T
ABLES
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Page 9
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FIGURES
Figure 1: Front and Rear Panels 11
Figure 2: Port and System Status LEDs 14
Figure 3: Power Supply Inlet 16
Figure 4: Reset Button 16
Figure 5: Console Port 17
Figure 6: Collapsed Backbone 32
Figure 7: Network Aggregation Plan 33
Figure 8: Remote Connections with Fiber Cable 34
Figure 9: Making VLAN Connections 35
Figure 10: RJ-45 Connections 38
Figure 11: Attaching the Brackets 41
Figure 12: Installing the Switch in a Rack 42
Figure 13: Attaching the Adhesive Feet 43
Figure 14: Inserting an SFP Transceiver into a Slot 44
Figure 15: Power Inlet 45
Figure 16: Console Cable 46
Figure 17: Making Twisted-Pair Connections 50
Figure 18: Network Wiring Connections 51
Figure 19: Making Fiber Port Connections 53
Figure 20: RJ-45 Connector Pin Numbers 59
Figure 21: Straight-through Wiring 61
Figure 22: Crossover Wiring 61
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F
IGURES
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Page 11
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1 INTRODUCTION
OVERVIEW
The DG-FS4526E is a Fast Ethernet Layer 2 switch with 24 10/100BASE-TX ports, and two Small Form Factor Pluggable (SFP) transceiver slots that operate in combination with 1000BASE-T ports 25~26 (see "Front and Rear Panels" on
page 11).
This switch provides a broad range of powerful features for Layer 2 switching, delivering reliability and consistent performance for your network traffic. It brings order to poorly performing networks by segregating them into separate broadcast domains with IEEE 802.1Q compliant VLANs, and empowers multimedia applications with multicast switching and CoS services.
Figure 1: Front and Rear Panels
DG-FS4526E
Port Status Indicators
System Indicators
10/100 Mbps RJ-45 Ports
1000BASE-T/SFP Ports
Reset Button
Grounding Point
Power Inlet
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Overview
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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. With store-and-forward switching, the entire packet must be received into a buffer and checked for validity before being forwarded. This prevents errors from being propagated throughout the network.
NETWORK MANAGEMENT OPTIONS
With a comprehensive array of LEDs, the switch provides “at a glance” monitoring of network and port status. The switch can be managed over the network with a web browser or Telnet application, or via a direct connection to the console port. The switch includes a built-in network management agent that allows it to be managed in-band using SNMP or RMON (Groups 1, 2, 3, 9) protocols. It also has an RJ-45 serial port for out-of-band management. A PC may be connected to this port for configuration and monitoring out-of-band via the supplied RJ-45-to-DB-9 serial (RS232) cable.
For a detailed description of the management features, refer to the Management Guide.
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Description of Hardware
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DESCRIPTION OF HARDWARE
10/100BASE-T PORTS
The switch contains 24 RJ-45 ports that operate at 10 Mbps, or 100 Mbps, half or full duplex. Because these ports 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.
Each of these ports support auto-negotiation, so the optimum transmission mode (half or full duplex), and data rate (10, or 100 Mbps) can be selected automatically. If a device connected to one of these ports does not support auto­negotiation, the communication mode of that port can be configured manually.
Each port also supports IEEE 802.3x auto-negotiation of flow control, so the switch can automatically prevent port buffers from becoming saturated.
SFP TRANSCEIVER SLOTS
The Small Form Factor Pluggable (SFP) transceiver slots are shared with Gigabit RJ-45 ports 25~26. In the default configuration, if an SFP transceiver (purchased separately) is installed in a slot and has a valid link on the port, the associated RJ-45 port is disabled. The switch can also be configured to force the use of an RJ-45 port or SFP slot, as required.
The following table shows a list of transceiver types which have been tested with the switch. For an updated list of vendors supplying these transceivers, contact your local dealer. For information on the recommended standards for fiber optic cabling, see "Fiber Standards" on page 63.
Table 1: Supported SFP Transceivers
Media Standard Fiber Diameter
(microns)
Wavelength (nm)
Maximum Distance
*
1000BASE-SX 50/125 850 700 m
62.5/125 850 400 m
1000BASE-LX 50/125 1300 550 m
62.5/125 1300 550 m
9/125 1300 10 km
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Description of Hardware
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PORT AND SYSTEM STATUS LEDS
The switch 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.
Figure 2: Port and System Status LEDs
1000BASE-LH 9/125 1310 35 km
1550 80 km
100BASE-FX 62.5/125 1300 2 km
1000BASE-T 100 m
* Maximum distance may vary for different SFP vendors.
Table 1: Supported SFP Transceivers
Media Standard Fiber Diameter
(microns)
Wavelength (nm)
Maximum Distance
*
Port LEDs
Port 25, 26 LEDs
System LEDs
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Description of Hardware
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Table 2: Port Status LEDs
LED Condition Status
Fast Ethernet Ports (Ports 1-24)
Link/Activity/ Speed
On/Flashing Amber Port has established a valid 10 Mbps network
connection. Flashing indicates activity.
On/Flashing Green Port has established a valid 100 Mbps network
connection. Flashing indicates activity.
Off The link is down.
SFP Gigabit Ethernet Ports (Ports 25-26)
(Link/Activity) On/Flashing Amber Port has established a valid 10/100 Mbps network
connection. Flashing indicates activity.
On/Flashing Green Port has a valid link at 1000 Mbps. Flashing
indicates activity.
Off The link is down.
Table 3: System Status LEDs
LED Condition Status
PWR On Green The unit’s internal power supply is operating
normally.
Off The unit has no power connected.
Diag On Green The system diagnostic test has completed
successfully.
On Amber The system diagnostic test is in progress.
Flashing Amber The system diagnostic test has detected a fault.
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Description of Hardware
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POWER SUPPLY INLET
There is one power inlet on the rear panel of the switch. The standard power inlet is for the AC power cord.
Figure 3: Power Supply Inlet
GROUNDING POINT
To prevent accidental electrical shock or damage to your switch, it is recommended that you ground the switch to an earth point by attaching a grounding wire (not supplied) to the grounding point located next to the power inlet, with a metal screw. If located in a tall building, grounding points include metal drain pipes, and other electrostatic conductive devices that lead to the ground, or if located on the first floor of a building, the ground outside itself.
RESET BUTTON
If you encounter any switch malfunctions, such as a hang or non-recoverable error, you might want to reset the switch to its default configuration by pressing and holding the reset button for five seconds. The reset button is located on the rear panel on the opposing side of the power inlet.
Figure 4: Reset Button
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Description of Hardware
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CONSOLE PORT
This port is used to connect a console device to the access point 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.
Figure 5: Console Port
Console Port
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Description of Hardware
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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.
When performance bottlenecks are caused by congestion at the network access point (such as the network card for a high-volume file server), the device experiencing congestion (server, power user, or hub) can be attached directly to a switched port. And, by using full-duplex mode, the bandwidth of the dedicated segment can be doubled to maximize throughput.
When networks are based on repeater (hub) technology, the distance between end stations is limited by a maximum hop count. However, a switch turns the hop count back to zero. So subdividing the network into smaller and more manageable segments, and linking them to the larger network by means of a switch, removes this limitation.
A switch can be easily configured in any Ethernet, Fast Ethernet, or Gigabit Ethernet network to significantly boost bandwidth while using conventional cabling and network cards.
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Application Examples
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APPLICATION EXAMPLES
This 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
This switch is an excellent choice for mixed Ethernet, Fast Ethernet, and Gigabit Ethernet installations where significant growth is expected in the near future. You can easily build on this basic configuration, adding direct full-duplex connections to workstations or servers. When the time comes for further expansion, just connect to another hub or switch using one of the Fast Ethernet ports, a Gigabit Ethernet port, or a plug-in SFP transceiver on the front panel.
In the figure below, the DG-FS4526E is operating as a collapsed backbone for a small LAN. It is providing dedicated 10 Mbps full-duplex connections to workstations, 100 Mbps full-duplex connections to power users, and 1 Gbps full­duplex connections to servers.
Figure 6: Collapsed Backbone
DG-FS4526E
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Application Examples
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NETWORK AGGREGATION PLAN
With 26 parallel bridging ports (i.e., 26 distinct collision domains), these switches can collapse a complex network down into a single efficient bridged node, increasing overall bandwidth and throughput.
In the figure below, the 10/100BASE-TX ports on the switch are providing 100 Mbps connectivity for up to 24 segments, while the 1000BASE-T ports are providing connectivity for two Gigabit segments.
Figure 7: Network Aggregation Plan
Server Farm
10/100 Mbps Segments
...
...
1000 Mbps Segments
DG-FS4526E
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Application Examples
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REMOTE CONNECTIONS WITH FIBER
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, a 1000BASE-LH link up to 80 km, and a 100BASE-FX (SMF) link up to 20 km. This allows the switches to serve as a collapsed backbone, providing direct connectivity for a widespread LAN.
The figure below illustrates the DG-FS4526E connecting multiple segments with fiber cable.
Figure 8: Remote Connections with Fiber Cable
...
...
Headquarters
1000BASE-LX SMF (5 kilometers)
Remote Switch
10/100 Mbps Segments
1000BASE-SX MMF (550 meters)
Remote Switch
Server Farm
DG-FS4526E
DG-FS4526E
DG-FS4526E
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Application Examples
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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. Untagged VLANs can be used for small networks attached to a single switch. However, tagged VLANs should be used for larger networks, and all the VLANs assigned to the inter-switch links.
Figure 9: Making VLAN Connections
N
OTE
:
When connecting to a switch that does not support IEEE 802.1Q
VLAN tags, use untagged ports.
Finance
Marketing
VLAN 3
Untagged Ports
VLAN
unaware
switch
VLAN aware switch
Finance
VLAN 3
R&D
VLAN 2
Testing
R&D
Testing
VLAN 1
VLAN 2
VLAN 4
VLAN 1
Tagged Port
Tagged
Ports
DG-FS4526E
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Application Notes
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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. 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: 10 km (6.2 miles) for single-mode fiber
1000BASE-LH: 80 km (50 miles) for single-mode fiber
However, power budget constraints must also be considered when calculating the maximum cable length for your specific environment.
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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.
be able to maintain its temperature within 0 to 50 °C (32 to 122 °F) and its humidity within 10% to 90%, non-condensing
provide adequate space (approximately two inches) on all sides for proper air flow
be accessible for installing, cabling and maintaining the devices
allow the status LEDs to be clearly visible
Make sure twisted-pair cable is always routed away from power lines,
fluorescent lighting fixtures and other sources of electrical interference, such as radios and transmitters.
Make sure that the unit is connected to a separate grounded power outlet
that provides 100 to 240 VAC, 50 to 60 Hz, is within 2 m (6.6 feet) of each device and is powered from an independent circuit breaker. As with any equipment, using a filter or surge suppressor is recommended.
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Ethernet Cabling
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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.
Protection from radio frequency interference emissions
Electrical surge suppression
Separation of electrical wires (switch related or other) and electromagnetic
fields from data based network wiring
Safe connections with no damaged cables, connectors or shields
Figure 10: RJ-45 Connections
RJ-45 Connector
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Equipment Checklist
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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.
PACKAGE CONTENTS
Managed 26-Port FE Switch (DG-FS4526E)
RJ-45 to DB-9 console cable
Four adhesive foot pads
Grounding screw
Bracket Mounting Kit, containing two brackets and eight screws for
attaching the brackets to the switch
Power Cord
CD with Installation Guide and Management Guide
OPTIONAL RACK-MOUNTING EQUIPMENT
If you plan to rack-mount the switch, be sure to have the following equipment available:
Four mounting screws for each device you plan to install in a rack—these
are not included
A screwdriver (Phillips or flathead, depending on the type of screws used)
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Mounting
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MOUNTING
The switch can be mounted in a standard 19-inch equipment rack, on a desktop or shelf, or on a wall. 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 65.)
Mechanical Loading: Do not place any equipment on top of a rack-mounted
unit.
Circuit Overloading: Be sure that the supply circuit to the rack assembly is
not overloaded.
Grounding: Rack-mounted equipment should be properly grounded.
Particular attention should be given to supply connections other than direct connections to the mains.
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Mounting
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To rack-mount devices:
1. Attach the brackets to the device using the screws provided in the Bracket
Mounting Kit.
Figure 11: Attaching the Brackets
2. Mount the device in the rack, using four rack-mounting screws (not
provided). Be sure to secure the lower rack-mounting screws first to prevent the brackets being bent by the weight of the switch.
28
27
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Mounting
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Figure 12: Installing the Switch in a Rack
3. If installing a single switch only, turn to "Connecting to a Power Source" on
page 45 at the end of this chapter.
4. If installing multiple switches, mount them in the rack, one below the other.
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Mounting
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DESKTOP OR SHELF MOUNTING
To attach the switch to a vertical surface:
1. Attach the four adhesive feet to the bottom of the first switch.
Figure 13: Attaching the Adhesive Feet
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. If installing a single switch only, go to "Connecting to a Power Source" on
page 45, 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 each other, in any order.
DG-FS4526E
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Installing an Optional SFP Transceiver
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INSTALLING AN OPTIONAL SFP TRANSCEIVER
Figure 14: Inserting an SFP Transceiver into a Slot
The SFP slots support the following optional SFP transceivers:
1000BASE-SX
1000BASE-LX
1000BASE-LH
100BASE- FX
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. Note that SFP transceivers are keyed so they can only be installed in one orientation.
3. Slide the SFP transceiver into the slot until it clicks into place.
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Connecting to a Power Source
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CONNECTING TO A POWER SOURCE
To connect a switch to a power source:
1. Insert the power cable plug directly into the AC inlet located at the back of
the switch.
Figure 15: Power Inlet
2. Plug the other end of the cable into a grounded, 3-pin, AC power source.
3. Check the front-panel LEDs as the device is powered on to be sure the
Power LED is on green. If not, check that the power cable is correctly plugged in.
N
OTE
:
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.
N
OTE
:
SFP transceivers are not provided in the switch package.
N
OTE
:
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.
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Connecting to the Console Port
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CONNECTING TO THE CONSOLE PORT
This port is used to connect a console device to the access point 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.
Figure 16: Console Cable
WIRING MAP FOR SERIAL CABLE
Table 4: Serial Cable Wiring
Switch’s 9-Pin Serial Port
Null Modem PC’s 9-Pin
DTE Port
2 RXD (receive data) <--------------------- 3 TXD (transmit data)
3 TXD (transmit data) ---------------------> 2 RXD (receive data)
5 SGND (signal ground) ----------------------- 5 SGND (signal ground)
No other pins are used.
1
5
6 9
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Connecting to the Console Port
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The serial port’s configuration requirements are as follows:
Default Baud rate—115,200 bps
Character Size—8 Characters
Parity—None
Stop bit—One
Data bits—8
Flow control—none
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Connecting to the Console Port
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4 MAKING NETWORK CONNECTIONS
CONNECTING NETWORK DEVICES
This switch is designed to be connected to 10, 100, or 1000 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, 1000BASE-LH, or 100BASE-FX SFP transceivers.
TWISTED-PAIR DEVICES
Each device requires an unshielded twisted-pair (UTP) cable with RJ-45 connectors at both ends. Use Category 5, 5e, or 6 cable for 1000BASE-T connections, Category 5 or better for 100BASE-TX connections, and Category 3 or better for 10BASE-T connections.
CABLING GUIDELINES
The RJ-45 ports on the switches support automatic MDI/MDI-X pinout configuration, so you can use standard straight-through twisted-pair cables to connect to any other network device (PCs, servers, switches, routers, or hubs).
See "Cables and Pinouts" on page 59 for further information on cabling.
C
AUTION
:
Do not plug a phone jack connector into an RJ-45 port. This will damage the switch. Use only twisted-pair cables with RJ-45 connectors that conform to FCC standards.
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Twisted-Pair Devices
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CONNECTING TO PCS, SERVERS, HUBS AND SWITCHES
1. Connect 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 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" on page 51.) Otherwise, attach the other end to an available
port on the switch.
Make sure each twisted pair cable does not exceed 100 meters (328 ft) in length.
3. As each connection is made, the Link LED (on the switch) corresponding to
each port will turn on (green or amber) to indicate that the connection is valid.
N
OTE
:
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.
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Twisted-Pair Devices
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NETWORK WIRING CONNECTIONS
Today, the punch-down block is an integral part of many of the newer equipment racks. Actually it is a 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. If not already in place, attach one end of a cable segment to the back of the
patch panel where the punch-down block is located, and the other end to a modular wall outlet.
3. Label the cables to simplify future troubleshooting. See "Cable Labeling and
Connection Records" on page 56.
Figure 18: Network Wiring Connections
Equipment Rack (side view)
Switch
Patch Panel
Punch-Down Block
Wall
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Fiber Optic SFP Devices
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FIBER OPTIC SFP DEVICES
An optional Gigabit SFP (1000BASE-SX, 1000BASE-LX, 1000BASE-LH, or 100BASE-FX) transceiver 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.
1. Remove and keep the LC port’s rubber plug. When not connected to a fiber
cable, the rubber plug 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 optic cables will impair the quality of the light transmitted through the cable and lead to degraded performance on the port.
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.
W
ARNING
:
This switch uses lasers to transmit signals over fiber optic cable. The lasers are compliant with the requirements of a Class 1 Laser Product and are inherently eye safe in normal operation. However, you should never look directly at a transmit port when it is powered on.
W
ARNING
:
When selecting a fiber SFP 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.
Page 41
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HAPTER
4
| Making Network Connections
Fiber Optic SFP Devices
– 53 –
Figure 19: 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.
The 1000BASE-SX, 1000BASE-LX, 1000BASE-LH fiber optic ports operate at 1 Gbps, full duplex, with auto-negotiation of flow control. The maximum length for fiber optic cable operating at Gigabit speed will depend on the fiber type as listed under "1000 Mbps Gigabit Ethernet Collision Domain" on page 54.
The 100BASE-FX fiber optic ports operate at 100 Mbps, full duplex, with auto­negotiation of flow control. The maximum length for fiber cable operating at 100 Mbps is listed under "100 Mbps Fast Ethernet Collision Domain" on page 55.
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HAPTER
4
| Making Network Connections
Connectivity Rules
– 54 –
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.
1000BASE-T CABLE REQUIREMENTS
All Category 5 UTP cables that are used for 100BASE-TX connections should also work for 1000BASE-T, providing that all four wire pairs are connected. However, it is recommended that for all critical connections, or any new cable installations, Category 5e (enhanced Category 5) or Category 6 cable should be used. The Category 5e and 6 specifications include test parameters that are only 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 802.3-2005 standards.
1000 MBPS GIGABIT ETHERNET COLLISION DOMAIN
Table 5: Maximum 1000BASE-T Gigabit Ethernet Cable Length
Cable Type Maximum Cable Length Connector
Category 5, 5e, or 6 100-ohm UTP or STP 100 m (328 ft) RJ-45
Table 6: Maximum 1000BASE-SX Gigabit Ethernet Cable Lengths
Fiber Size Fiber Bandwidth Maximum Cable Length Connector
62.5/125 micron multimode fiber
160 MHz/km 2-220 m (7-722 ft) LC
200 MHz/km 2-275 m (7-902 ft) LC
50/125 micron multimode fiber
400 MHz/km 2-500 m (7-1641 ft) LC
500 MHz/km 2-550 m (7-1805 ft) LC
Page 43
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HAPTER
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| Making Network Connections
Connectivity Rules
– 55 –
100 MBPS FAST ETHERNET COLLISION DOMAIN
10 MBPS ETHERNET COLLISION DOMAIN
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 - 80 km
(7 ft - 50 miles)
LC
Table 9: Maximum 100BASE-FX Cable Length
Type Cable Type Max. Cable Length Connector
100BASE-FX 9/125 micron single-mode
fiber
2 m - 20 km (7ft - 12.43 miles)
LC
62.5/125 or 50/125 multimode fiber
up to 2 km (1.24 miles) LC
Table 10: 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
Table 11: Maximum Ethernet Cable Length
Type Cable Type Max. Cable Length Connector
10BASE-T Category 3 or better 100-ohm UTP 100 m (328 ft) RJ-45
Page 44
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HAPTER
4
| Making Network Connections
Cable Labeling and Connection Records
– 56 –
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.
Using your building’s floor plans, draw a map of the location of all network-
connected equipment. For each piece of equipment, identify the devices to which it is connected.
Note the length of each cable and the maximum cable length supported by
the switch ports.
For ease of understanding, use a location-based key when assigning
prefixes to your cable labeling.
Use sequential numbers for cables that originate from the same equipment.
Differentiate between racks by naming accordingly.
Label each separate piece of equipment.
Display a copy of your equipment map, including keys to all abbreviations at
each equipment rack.
Page 45
– 57 –
A TROUBLESHOOTING
DIAGNOSING SWITCH INDICATORS
Table 12: 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.
Diag LED is Flashing Amber
Power cycle the switch to try and clear the condition. If the condition does not clear, contact your dealer for
assistance.
Link LED is Off
Verify that the switch and attached device are powered on. Be sure the cable is plugged into both the switch and
corresponding device.
If the switch is installed in a rack, check the connections to
the punch-down block and patch panel.
Verify that the proper cable type is used and its length does
not exceed specified limits.
Check the adapter on the attached device and cable
connections for possible defects. Replace the defective adapter or cable if necessary.
Page 46
A
PPENDIX
A
| Troubleshooting
Power and Cooling Problems
– 58 –
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.
INSTALLATION
Verify that all system components have been properly installed. If one or more components appear to be malfunctioning (such as the power cord or network cabling), test them in an alternate environment where you are sure that all the other components are functioning properly.
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. Also, be sure the port through which you are connecting to the switch has not been disabled. If it has not been disabled, then check the network cabling that runs between your remote location and the switch.
N
OTE
:
The management agent accepts up to four simultaneous Telnet sessions. If the maximum number of sessions already exists, an additional Telnet connection will not be able to log into the system.
Page 47
– 59 –
B CABLES AND PINOUTS
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.
The figure below illustrates how the pins on the RJ-45 connector are numbered. Be sure to hold the connectors in the same orientation when attaching the wires to the pins.
Figure 20: RJ-45 Connector Pin Numbers
N
OTE
:
Each wire pair must be attached to the RJ-45 connectors in a specific orientation.
C
AUTION
:
DO NOT plug a phone jack connector into any RJ-45 port. Use only twisted-pair cables with RJ-45 connectors that conform with FCC standards.
8
1
1
8
Page 48
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PPENDIX
B
| Cables and Pinouts
Twisted-Pair Cable and Pin Assignments
– 60 –
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).
The RJ-45 ports on the switch base unit 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. In straight-through cable, pins 1, 2, 3, and 6, at one end of the cable, are connected straight through to pins 1, 2, 3, and 6 at the other end of the cable. When using any RJ-45 port on this switch, you can use either straight-through or crossover cable.
Note: The “+” and “-” signs represent the polarity of the wires that
make up each wire pair.
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.)
You must connect all four wire pairs as shown in the following diagram to support Gigabit Ethernet.
Table 13: 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
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PPENDIX
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| Cables and Pinouts
Twisted-Pair Cable and Pin Assignments
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Figure 21: Straight-through Wiring
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 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.)
You must connect all four wire pairs as shown in the following diagram to support Gigabit Ethernet.
Figure 22: Crossover Wiring
White/Orange Stripe
Orange
White/Green Stripe
Green
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
EIA/TIA 568B RJ-45 Wiring Standard
10/100BASE-TX Straight-through Cable
End A
End B
Blue
White/Blue Stripe
Brown
White/Brown Stripe
White/Orange Stripe
Orange
White/Green Stripe
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
EIA/TIA 568B RJ-45 Wiring Standard
10/100BASE-TX Crossover Cable
End A
End B
Green
Blue
White/Blue Stripe
Brown
White/Brown Stripe
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PPENDIX
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| Cables and Pinouts
Twisted-Pair Cable and Pin Assignments
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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.
Use 100-ohm Category 5, 5e or 6 unshielded twisted-pair (UTP) or shielded twisted-pair (STP) cable for 1000BASE-T connections. Also be sure
that the
length of any twisted-pair connection does not exceed 100 meters (328 feet)
.
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). These tests are specified in the ANSI/TIA/EIA-TSB-95 Bulletin, “The Additional Transmission Performance Guidelines for 100 Ohm 4-Pair Category 5 Cabling.”
Note that when testing your cable installation, be sure to include all patch cables between switches and end devices.
Table 14: 1000BASE-T MDI and MDI-X Port Pinouts
Pin MDI Signal Name MDI-X Signal Name
1 Bi-directional Pair A Plus (BI_DA+) Bi-directional Pair B Plus (BI_DB+)
2 Bi-directional Pair A Minus (BI_DA-) Bi-directional Pair B Minus (BI_DB-)
3 Bi-directional Pair B Plus (BI_DB+) Bi-directional Pair A Plus (BI_DA+)
4 Bi-directional Pair C Plus (BI_DC+) Bi-directional Pair D Plus (BI_DD+)
5 Bi-directional Pair C Minus (BI_DC-) Bi-directional Pair D Minus (BI_DD-)
6 Bi-directional Pair B Minus (BI_DB-) Bi-directional Pair A Minus (BI_DA-)
7 Bi-directional Pair D Plus (BI_DD+) Bi-directional Pair C Plus (BI_DC+)
8 Bi-directional Pair D Minus (BI_DD-) Bi-directional Pair C Minus (BI_DC-)
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PPENDIX
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| Cables and Pinouts
Fiber Standards
– 63 –
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.
FIBER STANDARDS
The International Telecommunication Union (ITU-T) has standardized various fiber types for data networks. These are summarized in the following table.
Table 15: Fiber Standards
ITU-T Standard
Description Application
G.651 Multimode Fiber
50/125-micron core
Short-reach connections in the 1300­nm or 850-nm band
G.652 Non-Dispersion-Shifted Fiber
Single-mode, 9/125-micron core
Longer spans and extended reach. Optimized for operation in the 1310­nm band. but can also be used in the 1550-nm band
G.652.C Low Water Peak Non-
Dispersion-Shifted Fiber
Single-mode, 9/125-micron core
Longer spans and extended reach. Optimized for wavelength-division multiplexing (WDM) transmission across wavelengths from 1285 to 1625 nm. The zero dispersion wavelength is in the 1310-nm region.
G.653 Dispersion-Shifted Fiber
Single-mode, 9/125-micron core
Longer spans and extended reach. Optimized for operation in the region from 1500 to 1600-nm.
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PPENDIX
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| Cables and Pinouts
Fiber Standards
– 64 –
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. Optimized for high-power dense wavelength-division multiplexing (DWDM) operation in the region from 1500 to 1600-nm.
Table 15: Fiber Standards (Continued)
ITU-T Standard
Description Application
Page 53
– 65 –
C HARDWARE SPECIFICATIONS
PHYSICAL CHARACTERISTICS
PORTS
24 10/100BASE-TX ports, with auto-negotiation 2 10/100/1000BASE-T shared with two SFP transceiver slots
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) *Maximum Cable Length - 100 m (328 ft)
Ports 25-26: 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
4M bits
AGGREGATE BANDWIDTH
8.8 Gbps
SWITCHING DATABASE
8K MAC address entries
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PPENDIX
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| Hardware Specifications
Physical Characteristics
– 66 –
LEDS
System: Power, Diag (Diagnostic), Port: status (link, speed and activity)
WEIGHT
1.7 kg (3.18 lbs)
SIZE
44.0 x 21.0 x 4.4 cm (17.32 x 8.27 x 1.73 in.)
TEMPERATURE
Operating: 0 to 50 °C (32 to 122 °F) Storage: -40 to 70 °C (-40 to 158 °F)
HUMIDITY
Operating: 10% to 90% (non-condensing)
AC INPUT
100 to 240 V, 50-60 Hz, 0.3A
POWER SUPPLY
Internal, auto-ranging SMPS: AC 100-240V, 50-60Hz
POWER CONSUMPTION
17 Watts (Maximum power consumption from AC inlet)
MAXIMUM CURRENT
0.3 A @ 100 VAC
0.2 A @ 240 VAC
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PPENDIX
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| Hardware Specifications
Switch Features
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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
Web, Telnet, SSH, or SNMP manager
OUT-OF-BAND MANAGEMENT
RJ-45 console port
SOFTWARE LOADING
HTTP, HTTPS, TFTP in-band, or XModem out-of-band
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PPENDIX
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| Hardware Specifications
Management Features
– 68 –
Page 57
– 69 –
GLOSSARY
10BASE-T
IEEE 802.3 specification for 10 Mbps Ethernet over two pairs of Category 3, 4, or 5 UTP cable.
100BASE-FX
IEEE 802.3 specification for 100 Mbps Ethernet over two strands of 50/125,
62.5/125 micron, or 9/125 micron core fiber cable.
100BASE-TX
IEEE 802.3u specification for 100 Mbps Ethernet over two pairs of Category 5 UTP cable.
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 802.3z specification for Gigabit Ethernet over two strands of 50/125 or
62.5/125 micron core fiber cable.
1000BASE-T
IEEE 802.3ab specification for Gigabit Ethernet over 100-ohm Category 5, 5e or 6 twisted-pair cable (using all four wire pairs).
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LOSSARY
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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.
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.
ETHERNET
A network communication system developed and standardized by DEC, Intel, and Xerox, using baseband transmission, CSMA/CD access, logical bus topology, and coaxial cable. The successor IEEE 802.3 standard provides for integration into the OSI model and extends the physical layer and media with repeaters and implementations that operate on fiber, thin coax and twisted-pair cable.
FAST ETHERNET
A 100 Mbps network communication system based on Ethernet and the CSMA/ CD access method.
FULL DUPLEX
Transmission method that allows two network devices to transmit and receive concurrently, effectively doubling the bandwidth of that link.
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G
LOSSARY
– 71 –
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 802.3U
Defines CSMA/CD access method and physical layer specifications for 100BASE­TX Fast Ethernet. (Now incorporated in IEEE 802.3-2005.)
IEEE 802.3X
Defines Ethernet frame start/stop requests and timers used for flow control on full-duplex links. (Now incorporated in IEEE 802.3-2005.)
IEEE 802.3Z
Defines CSMA/CD access method and physical layer specifications for 1000BASE Gigabit Ethernet. (Now incorporated in IEEE 802.3-2005.)
LAN SEGMENT
Separate LAN or collision domain.
LED
Light emitting diode used for monitoring a device or network condition.
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LOSSARY
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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.
RJ-45 CONNECTOR
A connector for twisted-pair wiring.
STP
Shielded Twisted Pair.
SMPS
Switching Mode Power Supply.
SWITCHED PORTS
Ports that are on separate collision domains or LAN segments.
TIA
Telecommunications Industry Association
UTP
Unshielded twisted-pair cable.
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G
LOSSARY
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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. A VLAN serves as a logical workgroup with no physical barriers, allowing users to share information and resources as though located on the same LAN.
Page 62
G
LOSSARY
– 74 –
Page 63
– 75 –
INDEX
NUMERICS
10 Mbps connectivity rules 55 100 Mbps connectivity rules 55 1000 Mbps connectivity rules 54 1000BASE-LH fiber cable Lengths 55 1000BASE-LX fiber cable Lengths 55 1000BASE-SX fiber cable Lengths 54 1000BASE-T
pin assignments
62
100BASE-TX, cable lengths 55 10BASE-T, cable lengths 55
A
applications
central wiring closet
35
collapsed backbone 32 remote connections with fiber 35, 36 VLAN connections 35
B
buffer size 65
C
cable
Ethernet cable compatibility
38
fiber standards 63 labeling and connection records 56 lengths 55
connectivity rules
10 Mbps
55
100 Mbps 55
1000 Mbps 54 console port, pin assignments 46 contents of package 39 cooling problems 58 cord sets, international 45
D
desktop mounting 44
E
electrical interference, avoiding 37
equipment checklist 39 Ethernet connectivity rules 55
F
Fast Ethernet connectivity rules 55 features 67 front panel of switch 11 full duplex connectivity 31
G
Gigabit Ethernet cable lengths 54 grounding for racks 40
I
indicators, LED 14 installation
connecting devices to the switch
50
desktop or shelf mounting 44 network wiring connections 51 port connections 49, 52 power requirements 37 problems 58 rack mounting 40 site requirements 37
L
laser safety 52 LC port connections 52 location requirements 37
M
management
agent
12
features 67 SNMP 12
mounting the switch
in a rack
40
on a desktop or shelf 44
Page 64
I
NDEX
– 76 –
N
network
connections
49, 52
examples 32
P
package contents 39 pin assignments 59
1000BASE-T 62
10BASE-T/100BASE-TX 60
console port 46 ports, connecting to 49, 52 power, connecting to 45
R
rack mounting 40 rear panel of switch 11 RJ-45 port
connections
49
pinouts 62
S
screws for rack mounting 39 SFP transceiver slots 13 site selelction 37 SNMP agent 12 specifications
environmental
66
power 66 status LEDs 14 switch architecture 12
T
Telnet 58 temperature within a rack 40 troubleshooting
in-band access
58
power and cooling problems 58
stack troubleshooting 58 twisted-pair connections 49
V
VLANS, tagging 35
Page 65
DG-FS4526E
E042012
HW-R01
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S
ECTION
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