Digisol DG-FS4526E User manual

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

I 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

– 3 –
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.

A BOUT T HIS G UIDE
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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
CONTENTS 5
TABLES 7
FIGURES 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

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
INDEX 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

T ABLES
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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

F IGURES
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– 11 –
1INTRODUCTION
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

C HAPTER 1 | Introduction
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.

C HAPTER 1 | Introduction
Description of Hardware
– 13 –
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 auto-
negotiation, 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

C HAPTER 1 | Introduction
Description of Hardware
– 14 –
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

C HAPTER 1 | Introduction
Description of Hardware
– 15 –
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.

C HAPTER 1 | Introduction
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

C HAPTER 1 | Introduction
Description of Hardware
– 17 –
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

C HAPTER 1 | Introduction
Description of Hardware
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– 31 –
2NETWORK 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.
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.

C HAPTER 2 | Network Planning
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 full-
duplex connections to servers.
Figure 6: Collapsed Backbone
DG-FS4526E