1. Bitte lesen Sie sich diese Hinweise sorgfältig durch.
2. Heben Sie diese Anleitung für den spätern Gebrauch auf.
3. Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen. Vervenden Sie keine Flüssig- oder Aerosolreiniger. Am
besten dient ein angefeuchtetes Tuch zur Reinigung.
4. Um eine Beschädigung des Gerätes zu vermeiden sollten Sie nur Zubehörteile verwenden, die vom Hersteller zugelassen
sind.
5. Das Gerät is vor Feuchtigkeit zu schützen.
6. Bei der Aufstellung des Gerätes ist auf sichern Stand zu achten. Ein Kippen oder Fallen könnte Verletzungen
hervorrufen. Verwenden Sie nur sichere Standorte und beachten Sie die Aufstellhinweise des Herstellers.
7. Die Belüftungsöffnungen dienen zur Luftzirkulation die das Gerät vor Überhitzung schützt. Sorgen Sie dafür, daß diese
Öffnungen nicht abgedeckt werden.
8. Beachten Sie beim Anschluß an das Stromnetz die Anschlußwerte.
9. Die Netzanschlußsteckdose muß aus Gründen der elektrischen Sicherheit einen Schutzleiterkontakt haben.
10. Verlegen Sie die Netzanschlußleitung so, daß niemand darüber fallen kann. Es sollete auch nichts auf der Leitung
abgestellt werden.
11. Alle Hinweise und Warnungen die sich am Geräten befinden sind zu beachten.
12. Wird das Gerät über einen längeren Zeitraum nicht benutzt, sollten Sie es vom Stromnetz trennen. Somit wird im Falle
einer Überspannung eine Beschädigung vermieden.
13. Durch die Lüftungsöffnungen dürfen niemals Gegenstände oder Flüssigkeiten in das Gerät gelangen. Dies könnte einen
Brand bzw. Elektrischen Schlag auslösen.
14. Öffnen Sie niemals das Gerät. Das Gerät darf aus Gründen der elektrischen Sicherheit nur von authorisiertem
Servicepersonal geöffnet werden.
15. Wenn folgende Situationen auftreten ist das Gerät vom Stromnetz zu trennen und von einer qualifizierten Servicestelle zu
überprüfen:
a – Netzkabel oder Netzstecker sint beschädigt.
b – Flüssigkeit ist in das Gerät eingedrungen.
c – Das Gerät war Feuchtigkeit ausgesetzt.
d – Wenn das Gerät nicht der Bedienungsanleitung ensprechend funktioniert oder Sie mit Hilfe dieser Anleitung keine
Verbesserung erzielen.
e – Das Gerät ist gefallen und/oder das Gehäuse ist beschädigt.
f – Wenn das Gerät deutliche Anzeichen eines Defektes aufweist.
16. Bei Reparaturen dürfen nur Orginalersatzteile bzw. den Orginalteilen entsprechende Teile verwendet werden. Der
Einsatz von ungeeigneten Ersatzteilen kann eine weitere Beschädigung hervorrufen.
17. Wenden Sie sich mit allen Fragen die Service und Repartur betreffen an Ihren Servicepartner. Somit stellen Sie die
Betriebssicherheit des Gerätes sicher.
18. Zum Netzanschluß dieses Gerätes ist eine geprüfte Leitung zu verwenden, Für einen Nennstrom bis 6A und einem
Gerätegewicht grőßer 3kg ist eine Leitung nicht leichter als H05VV-F, 3G, 0.75mm2 einzusetzen.
Trademarks
Copyright D-Link Corporation 2001.
Contents subject to change without prior notice.
Copyright Statement
No part of this publication may be reproduced in any form or by any means or used to make any derivative such as
translation, transformation, or adaptation without permission, as stipulated by the United States Copyright Act of 1976.
ii
Table Of Contents
About This Guide............................................................................................................................................... xiii
Overview of this User’s Guide..................................................................................................................... xiii
Terminology............................................................................................................................................. xiii
Ethernet over VDSL........................................................................................................................................ 1
Switch Description and Function........................................................................................................................ 3
Features .............................................................................................................................................................. 4
Installation and Setup........................................................................................................................................... 5
Power on ..................................................................................................................................................... 7
Front Panel.................................................................................................................................................. 8
LED Indicators............................................................................................................................................ 9
Stacking a Switch Group........................................................................................................................... 10
Powering On Switch Stacks...................................................................................................................... 11
Cable Connections for a Stacked Switch Group ....................................................................................... 11
Front Panel Connections .................................................................................................................................. 13
Network Connections to DSL Splitter ............................................................................................................... 15
Cable Attachments to DSL Splitter........................................................................................................... 16
Install the Ground Wire on the DSL Splitter............................................................................................. 17
Connection to End User ................................................................................................................................ 17
Determining Switch Stack Order .............................................................................................................. 24
Spanning Tree Protocol................................................................................................................................. 25
Creating a Stable STP Topology............................................................................................................... 27
Illustration of STP..................................................................................................................................... 30
Configuring the Switch....................................................................................................................................... 38
Connecting to the Switch .............................................................................................................................. 38
Connecting to the Switch Using Telnet..................................................................................................... 39
First Time Connecting to the Switch............................................................................................................. 39
User Accounts Management ......................................................................................................................... 40
Root, User+ and Normal User Privileges.................................................................................................. 42
Save Changes.................................................................................................................................................... 42
Logging On to The Switch Console.......................................................................................................... 45
Updating or Deleting User Accounts ........................................................................................................ 45
Viewing Current User Accounts ............................................................................................................... 46
Deleting a User Account ........................................................................................................................... 46
Configuring the Switch...................................................................................................................................... 47
Serial Port and SLIP Settings........................................................................................................................ 48
Switch Information ....................................................................................................................................... 49
System Information....................................................................................................................................... 51
Configure IP Address.................................................................................................................................... 52
Management Station IP Settings ............................................................................................................... 53
Port Utilization.......................................................................................................................................... 78
Port Error Packets ..................................................................................................................................... 78
Port Packet Analysis ................................................................................................................................. 79
Browse MAC Address .............................................................................................................................. 80
System Utilities.................................................................................................................................................. 81
Upgrade Firmware from TFTP Server.......................................................................................................... 81
Use Configuration File on TFTP Server ................................................................................................... 82
Save Settings to TFTP Server ................................................................................................................... 83
Save History Log to TFTP Server............................................................................................................. 83
Ping Test ................................................................................................................................................... 84
Local Loopback Test................................................................................................................................. 84
Line Loopback Test .................................................................................................................................. 85
System Reboot ................................................................................................................................................... 86
Getting Started .............................................................................................................................................. 88
Log On to Web Manager............................................................................................................................... 89
Web Interface Components........................................................................................................................... 89
Accessing Menu Windows........................................................................................................................ 90
System Information................................................................................................................................... 91
System Time Setup ................................................................................................................................... 91
IP Settings ................................................................................................................................................. 92
Switch Information ....................................................................................................................................... 92
General Radius Server............................................................................................................................. 102
Authentic Radius Server ......................................................................................................................... 103
Local User............................................................................................................................................... 104
Port Mirroring ............................................................................................................................................. 104
802.1Q Port Settings ............................................................................................................................... 109
Spanning Tree Protocol Configuration.................................................................................................... 115
Port Spanning Tree.................................................................................................................................. 116
MAC Forwarding.................................................................................................................................... 117
MAC Filtering......................................................................................................................................... 117
Management Station IP Settings ............................................................................................................. 118
Community Strings ................................................................................................................................. 118
User Accounts......................................................................................................................................... 119
Serial Port Settings.................................................................................................................................. 121
Port Utilization............................................................................................................................................ 123
Received (RX)......................................................................................................................................... 124
Received (RX)......................................................................................................................................... 128
MAC Address ............................................................................................................................................. 133
Port Access Control .................................................................................................................................... 135
Save Settings........................................................................................................................................... 139
Save History Log .................................................................................................................................... 139
Ping Test ..................................................................................................................................................... 141
Local Loopback Test............................................................................................................................... 141
Line Loopback Test ................................................................................................................................ 141
Save Changes.............................................................................................................................................. 142
Figure 2-1. Attaching the mounting brackets to the Switch.................................................................................... 6
Figure 2-2. Installing the Switch in an equipment rack .......................................................................................... 6
Switch Components
Figure 3-1. Front panel view of the Switch............................................................................................................. 8
Figure 3-2. Rear panel view of the Switch............................................................................................................. 8
Figure 3-3. The LED indicators .............................................................................................................................. 9
Figure 5-4. Initial Stack Order .............................................................................................................................. 24
Figure 5-5. New Stack Order................................................................................................................................ 24
Console Configuration
Figure 6- 1. Initial screen, first time connecting to the Switch ............................................................................. 39
Figure 6- 2. Main menu (Access System Information Screen) ............................................................................. 40
Figure 6- 3. Main Menu (Access User Accounts Menu)....................................................................................... 40
Figure 6- 4. Setup User Accounts Screen ............................................................................................................. 41
Figure 6- 5. Main menu......................................................................................................................................... 43
Figure 6- 6. Save changes Screen ......................................................................................................................... 43
Figure 6- 7. Main Menu - Reboot ........................................................................................................................ 44
Figure 6- 8. System Reboot Menu ....................................................................................................................... 44
Figure 6- 9. Setup User Accounts Screen ............................................................................................................ 45
Figure 6- 10. Serial Port and SLIP Settings Screen .............................................................................................. 48
Figure 6- 11. Switch Information Menu................................................................................................................ 49
Figure 6- 13. System Information Menu............................................................................................................... 51
Figure 6- 14. Setup System Time Menu ............................................................................................................... 51
Figure 6- 56. Use Configuration File on TFTP Server Screen.............................................................................. 82
Figure 6- 57. Save Settings to TFTP Server Screen.............................................................................................. 83
Figure 6- 58. Save Log to TFTP Server Screen .................................................................................................... 83
Figure 6- 59. Ping Test Screen.............................................................................................................................. 84
Figure 6- 60. Local Loopback Test Screen ........................................................................................................... 84
Figure 6- 61. Line Loopback Test Screen............................................................................................................. 85
Figure 6- 62. System Reboot menu....................................................................................................................... 86
Figure 6- 63. System Reboot Confirmation Screen .............................................................................................. 87
Web-based Configuration
Figure7- 1. Web Manager Login........................................................................................................................... 89
Figure7- 2. Top Section of Web Manager............................................................................................................ 89
Figure7- 3. Web Manager Folders and Menus...................................................................................................... 90
Figure7- 4. First Menu – System Information....................................................................................................... 91
Figure7- 5. Setup System Time Menu .................................................................................................................. 91
Figure7- 6. IP Settings Window........................................................................................................................... 92
Figure7- 35. Spanning Tree Port Settings.......................................................................................................... 116
Figure7- 36. MAC Address Forwarding Entry Screen........................................................................................ 117
Figure7- 37. MAC Address Filtering Setup Screen ............................................................................................ 117
Figure7- 38. Management Station IP Address Screen ........................................................................................ 118
Figure7- 39. Community Strings Menu .............................................................................................................. 118
Figure7- 40. Trap Receivers Menu ..................................................................................................................... 119
Figure7- 41. User Accounts Control Table......................................................................................................... 119
Figure7- 42. Add User Accounts Control Table ................................................................................................. 120
Figure7- 43. Edit User Accounts Table............................................................................................................... 120
Figure7- 44. Serial Port Settings ......................................................................................................................... 121
Figure7- 63. Show Radius Authentication window ........................................................................................... 136
Figure7- 64. Show Radius Accounting window ................................................................................................ 137
Figure7- 65. Update Firmware from Server window......................................................................................... 138
Figure7- 66. Use Configuration File on Server window.................................................................................... 138
Figure7- 67. Save Settings To TFTP Server window ........................................................................................ 139
Figure7- 68. Save Switch History To TFTP Server window ............................................................................. 139
Figure7- 69. Switch History window................................................................................................................. 140
Figure7- 70. Ping Test window.......................................................................................................................... 141
Figure7- 71. Local Loopback Test Screen .......................................................................................................... 141
Figure7- 72. Line Loopback Test Screen............................................................................................................ 142
Figure7- 73. Save Configuration window.......................................................................................................... 142
Figure7- 74. Factory Reset to Default Value window........................................................................................ 142
Figure7- 75. Restart System window................................................................................................................. 143
D-Link DHS-3224V Switch User’s Guide
About This Guide
This User’s guide tells you how to install, manage and configure the D-LINK DHS-3224V Switch.
Overview of this User’s Guide
• “Introduction.” Describes the Switch and its features.
• “Installation and Setup.” Discusses physical installation of the DHS-3224V Switch and SP-24 DSL Splitter.
• “Switch Components.” Describes the front panel, rear panel, and LED indicators of the Switch.
• “Network Connections” Tells how you can connect the Switch and DSL Splitter to create a VDSL local area
network (LAN).
• “Switch Management Concepts” Explains some of the basic principles and concepts of Ethernet standards.
• “Configuring the Switch” Tells how to use the built-in console interface to change, set, and monitor Switch
performance and security.
• Appendix A, “Technical Specifications.” Lists the technical specifications of the DHS-3224V and the SP-
24.
• Appendix B, Default Runtime Settings
Intended Audience
It is assumed by the author that the reader of this user’s guide has a basic understanding of the data packet
switching and telecommunications technology in general, and its associated vocabulary. Some readers may not
be familiar with Ethernet and the principles fundamental to Ethernet packet switching. For this reason, a
discussion of the Ethernet concepts pertinent to the management of a Layer 2 Ethernet switch are provided in
Chapter 5.
Terminology
For convenience, the term Switch with an upper case “S” is used when specifically referring to the D-LINK
DHS-3224V Switch. The term switch with a lower case “s” is a general term referring to all Ethernet-based
switches. Likewise, the term Splitter or DSL Splitter is used to specifically refer to the D-LINK SP-24 DSL
Splitter.
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D-Link DHS-3224V Switch User’s Guide
1
Introduction
This section introduces the DHS-3224V VDSL Switch and describes essential functions and features of the
Switch. A brief description of the system and its functionality are also presented.
Ethernet over VDSL
The DHS-3224V Switch is used in concert with the SP-24 DSL Splitter and the CPE (DEV-301, DEV-304) to
provide high-speed Internet connectivity to VDSL subscribers while maintaining full support for traditional
analog voice telephone services. The Switch implements Ethernet over VDSL using existing twisted-pair copper
telephone cable.
Applications
Ethernet over VDSL systems are ideally suited for delivery of fast network services to dwellings and businesses
with a high concentration of subscribers. Typical applications would include:
• Multiple Tenant Units (MTU) such as hotels
• Multiple Dwelling Units (MDU) such as high-rise apartment buildings
• Campus Networking
• LAN Extensions
Figure 1-1 below is a general representation of the D-LINK Ethernet over VDSL solution.
Figure 1-1. Ethernet over VDSL
1
D-Link DHS-3224V Switch User’s Guide
Hardware
The hardware components that comprise the D-LINK Ethernet over VDSL solution include the following:
1. The D-LINK DHS-3224V 24-port VDSL Switch
2. The D-LINK SP-24 DSL Splitter. Each unit channels voice and data to up to 24 end users, therefore,
one DSL Splitter must be installed for every Switch.
3. The D-LINK DEV-301 and DEV-304 used to connect end users to both data and voice channels.
These VDSL Bridges separates the lower frequency analog voice services from the high-speed digital
data channel and delivers both on separate lines..
The Switch and DSL Splitter function to concentrate and manage end user network connections and multiplex
voice telephony and data services. The Switch/Splitter combination is in effect the DSLAM for the local VDSL
subscribers.
2
D-Link DHS-3224V Switch User’s Guide
Switch Description and Function
The DHS-3224V VDSL Switch is an Ethernet-based switch capable of delivering VDSL service via installed
telephone cabling. Up to 24 VDSL accounts can be managed per Switch and up to 6 Switches can be set up in a
stacked group configuration. Each Switch paired with an on-site SP-24 DSL Splitter and remote CPE (1 unit per
port). The splitter combines the VDSL data channels and lower frequency analog telephone services (including
ISDN) and transmits the combined services to the end-users. For the VDSL subscriber, the CPE separates the
data and voice channels with a built-in splitter allowing simultaneous, full-duplex VDSL and analog voice
transmission. In this way, Ethernet over VDSL can overlay existing service without additional cable installation
or conditioning.
The Switch functions as a conventional Ethernet switch where each port provides VDSL service to a single
account. The local Ethernet-based network however, differs from standard Ethernet in two significant ways:
Cabling – The Switch provides VDSL service via existing 0.4 mm or 0.5 mm twisted-pair telephone cable.
Reach – VDSL service from the Switch to the subscriber can extend far beyond the maximum reach of standard
Ethernet.
The Switch can be managed via an out-of-band console connection to a computer using terminal emulation
software. The manager console may also be accessed in-band using an SNMP network manager or Telnet.
Management functions will be familiar to users who have worked with Layer 2 Ethernet switches. For users not
familiar with Ethernet switches and switch management, a detailed explanation of some of the important
management concepts and Ethernet standards is provided in Chapter 5.
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D-Link DHS-3224V Switch User’s Guide
Features
Ports
• One female RJ-21 port for connection to a VDSL splitter using Telco50 cabling.
• Uplink module with one 10/100 BASE-TX port for Ethernet over VDSL Uplink.
• 2 x IEEE1394 (Rx + Tx) “FireWire” ports for Switch-to-Switch operations.
• One female RS-232 DCE diagnostic port (console port) for setting up and managing the Switch via a
connection to a console terminal or PC using a terminal emulation program.
Performance Features
• Quadrature Amplitude Modulation (QAM)
• Frequency Division Duplexing
• Spectral compatibility with xDSL, ISDN (2B1Q/4B3T), digital PBX extensions and narrow band
interference
• 8.8 Gbps switching fabric capacity
• Store and forward switching scheme.
• 8K active MAC address entry table per device with automatic learning and aging (10 to 1000000
seconds).
• 8 MB packet buffer per device.
• 802.1D Spanning Tree support.
• 802.1Q Tagged VLAN support
• Supports up to 24 end users per Switch (24 ports)
• Up to 6 Switches can be stacked in a 19” equipment rack and managed as a unit
Management
• Provisioning for VDSL Settings (per Port)
• RS-232 console port for out-of-band network management via a console terminal.
• Spanning Tree Algorithm Protocol for creation of alternative backup paths and prevention of network
loops.
• SNMP v.1 Agent.
• Fully configurable either in-band or out-of-band control via SNMP based software.
• Flash memory for software upgrades. This can be done in-band via TFTP.
• Built-in SNMP management:
- Bridge MIB (RFC 1493)
- MIB-II (RFC 1213)
- Mini-RMON MIB (RFC 1757) – 4 groups
- 802.1p MIB (RFC 2674).
• TFTP support
• BOOTP support
• DHCP Client support
• Password enabled.
• Telnet remote control console
• Web Management Software
4
D-Link DHS-3224V Switch User’s Guide
2
Installation and Setup
Please read this section carefully to be certain that all equipment is installed and set up in accordance with the
instructions given here.
Unpacking
Each shipping carton should contain the following items:
OneDHS-3224V VDSL Switch
Mounting kit: 2 mounting brackets and screws
Four self-adhesive rubber feet
One AC power cord
This User’s Guide
If any item is found missing or damaged, please contact your D-LINK representative or sales agent.
Switch Placement
The Switch and Splitter are designed for mounting in an EIA standard-sized, 19-inch rack, which can be placed
in a wiring closet with other equipment. Make certain the location of the equipment rack is sufficiently dry and
cool. See the Specifications in Appendix A for environmental requirements and limitations. Use these additional
guidelines when selecting a suitable location for the equipment rack.
Attach the rubber feet to all Switches and Splitters that will be installed to maintain a minimum space
between the devices and to avoid damaging the equipment housing.
If you are installing more than one Switch, read Connecting Multiple Switches in Chapter 4.
The power outlet should be within 1.82 meters (6 feet) of the device.
Visually inspect the power cord and see that it is secured to the AC power connector.
Make sure that there is proper heat dissipation from and adequate ventilation around the Switch and
Splitter. Leave at least 5cm of space on the right and left sides, as well as 5cm on the rear of the
equipment for ventilation.
Cables for both devices attach at the front and the rear. Make sure there is ample room at the front and
the back of the devices to access cable connections.
Do not place heavy objects on the Switch or Splitter.
5
D-Link DHS-3224V Switch User’s Guide
Rack Installation
IMPORTANT: Attach the included rubber feet to the Switch or Switches before installing
it in the rack. All equipment in the rack including DSL Splitters should have rubber feet
attached. This is to maintain the minimum space needed between the devices and to
protect the device housing from being damaged.
Use the diagrams below as a guide for mounting both the Switch and SP-24 Splitter.
Figure 2-1. Attaching the mounting brackets to the Switch
Then, use the screws provided with the equipment rack to mount the Switch on the rack.
Figure 2-2. Installing the Switch in an equipment rack
6
D-Link DHS-3224V Switch User’s Guide
Power on
The Switch can be used with AC power supply 100-240 VAC, 50 - 60 Hz. The Switch’s power supply will
adjust to the local power source automatically. It may be powered on without having any or all network cables
connected.
After the Switch is plugged in, the LED indicators should respond as follows:
• The console LED indicator will blink green. This blinking of the LED indicators represents a reset of the
system.
• The power LED indicator will light steady green
Power Failure
As a precaution, if power failure occurs, unplug the Switch. When power is resumed, plug the Switch back in.
7
D-Link DHS-3224V Switch User’s Guide
3
Switch Components
This chapter describes the front panel, rear panel, side panels, optional plug-in modules, and LED indicators of
the DHS-3224V.
Front Panel
The front panel of the Switch consists of LED indicators, an RS-232 communication port, and an RJ-21 port for
connection to the SPT48JA Splitter.
Figure 3-1. Front panel view of the Switch
• Comprehensive LED indicators display the status of the Switch and the network (see the LED Indicators
section below).
• An RS-232 DCE console port for setting up and managing the Switch via a connection to a console
terminal or PC using a terminal emulation program.
• A VDSL RJ-21 port for connection to a DSL Splitter (SP-24)
Rear Panel
The rear panel of the Switch contains an AC power connector and the VDSL Uplink module.
Figure 3-2. Rear panel view of the Switch
• The AC power connector is a standard three-pronged connector that supports the power cord.
• 10/100 BASE-TX module used for uplinking to the Ethernet backbone.
8
D-Link DHS-3224V Switch User’s Guide
LED Indicators
The LED indicators of the Switch include Power, Console, Speed, and Link/Act. The following shows the LED
indicators for the Switch along with an explanation of each indicator.
Figure 3-3. The LED indicators
• Power: This indicator lights steady green when Switch is powered on and is dark when there is no
power supplied.
• Console: This indicator lights steady green when the Switch is being managed via out-of-band/local
console management through the RS-232 console port using a straight-through serial cable. It will blink
during the power on (POST) initialization.
• Uplink Link: This indicator (located on the rear panel next to the Uplink port) will light green when a
valid link to Ethernet (network backbone) is established. It will be dark if there is no link.
• Uplink Act: This indicator (located on the rear panel next to the Uplink port) will blink green when
there is activity, data transmission or reception, on the Uplink to the Ethernet (network backbone).
• VDSL Link: This indicator will light green when a valid VDSL link is established. It will be dark if
there is no link.
9
D-Link DHS-3224V Switch User’s Guide
4
Network Connections
This chapter describes how to connect the Switch as a standalone device or in a group to one or more SP-24
Switches. The Switch is provides the Ethernet over VDSL Uplink to the central office while the splitter
combines the VDSL data channel and basic telephone services for transport to end users.
Network cable connections can be made to the Switch with the power on or off. Caution should always be used
when working with or handling any electrically powered devices.
The cable connections described in detail in this chapter include:
Connections to the Switch
• Switch-to-Switch connection via IEEE 1394 “FireWire” for multiple Switch installation
• Switch to backbone; (VDSL over Ethernet) Uplink to backbone via RJ-45 Ethernet port
• Switch to SP-24DSL Splitter via Telco50 cable (RJ-21 port)
Connections to SP-24DSL Splitter
• Splitter to Switch or Switch pair via Telco50 (RJ-21 connector) cable
• Splitter to CPE (via 0.4mm or 0.5mm twisted-pair telephone cabling)
• Splitter to PBX (analog channel to Central Office) for basic telephone services
The Switch-to-computer connection via the RS-232 port (used for device/network management) is discussed in
Chapter 5.
The devices described here are designed for installation in a standard 19” rack where cable connections can be
easily accessed from both the front and the rear of the rack. Please read Chapter 2 for information about how to
install the devices in an equipment rack. The cable connections are described in two sections, one for
connections made using the ports on the front of the equipment and another for the connections made on the
back.
Connecting Multiple Switches
Up to 6 Switches may be grouped in a stacked configuration and connected together using FireWire cabling. A
multiple Switch arrangement can be connected to share a single uplink to the Ethernet backbone and be placed in
a single 19” equipment rack. Stacked switch group interconnections use IEEE 1394 FireWire.
Note: IEEE 1394 “FireWire” is a serial bus technology defined by the IEEE1394 High
Performance Serial Bus standard. For information about IEEE 1394, go to the 1394
Trade Association web site: http://www.1394ta.
Stacking a Switch Group
Up to 6 Switches may be stacked and managed as a unit with a single IP address and single uplink to the
Ethernet backbone. If you use the stacking function, it is important that you understand how stacking works in
the Switch, read Managing Switch Stacks and Determining Stack Order in Chapter 5 before placing the Switches
in the rack. The auto-detect feature for establishing the stack hierarchy can be overridden, see Stacking
Configuration in Chapter 6 for details on changing the stack order.
Figure 4-2 below illustrates how the Switch stack should be connected.
10
D-Link DHS-3224V Switch User’s Guide
Powering On Switch Stacks
Switches in stacked Switch groups should be powered on simultaneously after all the FireWire connections are
in place. The auto-detect mechanism of the stacking function requires that all participating Switches share MAC
address information at the same time to establish the stack order. Once the group hierarchy has been established,
it can only be changed using a software-driven override or a factory reset of each Switch in the group followed
by simultaneous power on.
Cable Connections for a Stacked Switch Group
Interconnection of the Switch stack is accomplished using IEEE 1394 “FireWire” cabling. The ports used to
connect the Switch stack are referred to here as the “stacking” ports. For uplink to the Ethernet backbone, it is
recommended that the Master Switch be used, although other Switches in the stack can be used for uplink.
Follow these steps to connect the stacked devices:
1. Connect the FireWire port on the Master Switch labeled “Out” to the FireWire port labeled “In” on
the Number 2 Switch.
2. Connect the FireWire port of the Number 2 Switch labeled “Out” to the FireWire port of the Number
3 Switch. Continue to connect the stacking ports of all the Switches in the stack in a likewise fashion.
3. Connect the FireWire port labeled “Out” on the last Switch in the stack i.e. the highest numbered
Switch, to the FireWire port labeled “In” on the Master Switch.
4. Finally, you can connect the Uplink port (10/100BASE-TX) to the Ethernet backbone with Category
5 cabling with RJ-45 connectors.
11
D-Link DHS-3224V Switch User’s Guide
Figure 4-1. Switch Stack Connections below illustrates cabling for a stacked group of six DHS-3224V Switches.
Uplink to Ethernet Backbone
DHS-3224V
(back)
LINEPBX
LINEPBX
LINEPBX
LINEPBX
DHS-24SP
(back)
LINEPBX
LINEPBX
Figure 4-1. Switch Stack Connections
12
D-Link DHS-3224V Switch User’s Guide
Front Panel Connections
The front view of the Switch and VDSL Splitter are illustrated in the diagram below. Three connections are
required:
1. Connect the female RJ-21 receptacle (labeled DSLAM) on the SP-24 DSL Splitter to the female RJ-21
receptacle (labeled VDSL RJ-21) on the front panel of the DHS-3224V Switch with Telco50 cable with
RJ-21 connectors (male-to-male).
2. If you are connecting a second Switch to the Splitter, connect the remaining female RJ-21 receptacle
(labeled DSLAM) on the SP-24 DSL Splitter to the female RJ-21 receptacle (labeled VDSL RJ-21) on the
front panel of the DHS-3224V Switch with Telco50 cabling with RJ-21 connectors (male-to-male).
3. For initial set up and management, connect the male RS-232 port on the Master Switch to the computer
used for Switch configuration and management using RS-232 cable.
Figure 4-2. Front Panel Network Connections
13
D-Link DHS-3224V Switch User’s Guide
Rear Panel Connections
The rear panel connections of the DHS-3224V Switch and SP-24 Splitter are illustrated in the diagram below.
The necessary connections are:
1. Connect the female RJ-21 interface (labeled PSTN A or PSTN B) on the rear panel of the SP-24 DSL
Splitter to the PBX (POTS line) using RJ-21 cable.
2. Connect the female RJ-21 interface (labeled LINE A or LINE B) on the rear panel of the Splitter to the
Main Distribution Frame, Cabling Cabinet or other wiring system used for connection the end users.
This connection is made using Telco50 cable with a male RJ-21 connector.
3. Connect the 10/100BASE-TX Uplink port to the Ethernet backbone using Category 5 or better twistedpair cabling with RJ-45 connector.
Figure 4-3. Rear Panel Connections
Note: In Figure 4-3. Rear Panel Connections, a 24-port RJ-11 patch panel is used for
the purpose of illustrating the Splitter-to-subscriber connection.
14
D-Link DHS-3224V Switch User’s Guide
Network Connections to DSL Splitter
The SP-24 DSL Splitter connects VDSL subscribers to both voice and data channels. All interfaces on the DSL
Splitter are female RJ-21 ports. All connection to the DSL Splitter should be made using Telco50 cabling with
male RJ-21 connectors. The DSL Splitter may be connected or disconnected while the Switch is powered on or
off. Figure 4-4 below illustrates the connection to the DSL Splitter.
Figure 4-4. Connection to the DSL Splitter
Connect the SP-24 DSL Splitter as follows:
1. Connection(s) to the DHS-3224V Switch are made via the RJ-21 port on the front panel of the device
labeled DSLAM. The Splitter is connected to one VDSL Switch. Connection to the Switch provides the
VDSL data channel (over Ethernet) to end users. Up to 24 VDSL accounts may be connected through
each DSLAM port (24 VDSL subscribers per DSL Splitter).
2. Connection(s) to the PBX are made via the RJ-21 ports labeled PBX. This connects the DSL Splitter to
the PBX and provides the channel for analog voice services.
3. Connections to the remote up to 24 CPE are made by first connecting to a Main Distribution Frame,
Cabling Cabinet, patch panels or other suitable wiring systems. Use the RJ-21 ports labeled LINE to
connect the combined data and voice channels to the VDSL accounts.
15
D-Link DHS-3224V Switch User’s Guide
Cable Attachments to DSL Splitter
There are two styles of connectors used for RJ-21 cable connections. The recommended style for all RJ-21
connections on the Switch and Splitter is the 90-degree connector picture in Figure 4-5 below.
Figure 4-5. 90-degree Connector secured with two screws
Figure 4-6. 120-degree Connector secured with one screw and a cable tie
16
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