D-Link DSL-504 User manual

DSL-504
ADSL Router
User’s Guide
First Edition (April 2001)
6DSL504...01

TABLE OF CONTENTS
ABOUT THIS USER’S GUIDE................................................................................... IV
BEFORE YOU START ........................................................................................................................................... IV
Operating Systems...........................................................................................................................................iv
ADSL Service ..................................................................................................................................................iv
Micro-filters ................................................................................................................................................................. iv
Print this page for your records..................................................................................................................................... v
VPI and VCI Settings.................................................................................................................................................... v
Global IP Address ......................................................................................................................................................... v
Default Gateway IP Address......................................................................................................................................... v
Print this page for your records..................................................................................................................................... v
INTRODUCTION ........................................................................................................ 1
ROUTER DESCRIPTION AND OPERATION .............................................................................................................. 1
ADSL TECHNOLOGY........................................................................................................................................... 1
PRODUCT FEATURES............................................................................................................................................ 2
PPP (Point-to-Point Protocol) Security.......................................................................................................... 2
DHCP Support (Dynamic Host Configuration Protocol) ............................................................................... 2
Network Address Translation (NAT)............................................................................................................... 2
VPN (Virtual Private Network)....................................................................................................................... 2
TCP/IP (Transfer Control Protocol/Internet Protocol) .................................................................................. 2
RIP-1/RIP-2 .................................................................................................................................................... 2
Static Routing.................................................................................................................................................. 3
Default Routing ............................................................................................................................................... 3
ATM (Asynchronous Transfer Mode).............................................................................................................. 3
Precise ATM Traffic Shaping.......................................................................................................................... 3
G.hs (Auto-handshake).................................................................................................................................... 3
High Performance........................................................................................................................................... 3
Full Network Management.............................................................................................................................. 3
Telnet Connection ........................................................................................................................................... 3
Easy Installation ............................................................................................................................................. 3
STANDARDS COMPATABILITY AND COMPLIANCE ................................................................................................ 4
UNPACKING ......................................................................................................................................................... 5
FRONT PANEL ...................................................................................................................................................... 5
REAR PANEL ........................................................................................................................................................ 5
LED INDICATORS ................................................................................................................................................ 6
HARDWARE INSTALLATION .................................................................................... 7
CONNECT THE POWER.......................................................................................................................................... 7
CONNECT ADSL LINE ......................................................................................................................................... 7
CONNECT ETHERNET LAN TO ROUTER ............................................................................................................... 8
WEB-BASED ROUTER CONFIGURATION ............................................................... 9
INTRODUCTION .................................................................................................................................................... 9
GETTING STARTED............................................................................................................................................... 9
SETTING UP THE PC ............................................................................................................................................. 9
MANAGEMENT................................................................................................................................................... 11
PPPoE Configuration ................................................................................................................................... 12
DHCP............................................................................................................................................................ 14
NAT Configuration........................................................................................................................................ 15
How NAT Works........................................................................................................................................................ 16
Setting Local IP Addresses ......................................................................................................................................... 17
Port Redirection............................................................................................................................................ 17

Advanced Filter/Firewall .............................................................................................................................. 18
Connection Type ........................................................................................................................................... 22
Static IP Address Configuration ................................................................................................................... 23
Line Condition............................................................................................................................................... 24
User Name and Password............................................................................................................................. 25
Save Changes ................................................................................................................................................ 26
Update Firmware.......................................................................................................................................... 27
Summary ....................................................................................................................................................... 28
SAVING CHANGES.............................................................................................................................................. 29
FINDING THE PASSWORD ................................................................................................................................... 29
CONTACTING TECHNICAL SUPPORT ...................................................................30
OFFICES .............................................................................31
TECHNICAL SPECIFICATIONS ...............................................................................33
IP CONCEPTS ..........................................................................................................35
IP ADDRESSES ................................................................................................................................................... 35
SUBNET MASK ................................................................................................................................................... 37
DSL-504 FIRMWARE UPGRADE UTILITY ...............................................................38
LIMITED WARRANTY ......................................................................................................................................... 45

DSL-504 ADSL Router User’s Guide
About This User’s Guide
This user’s guide provides instructions on how to install the DSL-504 ADSL
Router and use it to PCs or Ethernet concentrating devices on an Ethernet LAN
(Local Area Network) to the Internet or remote LAN. For the sake of simplicity,
this document uses the terms Router (first letter upper case) to refer specifically
to the DSL-504 ADSL Router, and router (first letter lower case) to refer to all
such devices including the DSL-504.
This guide assumes that the reader is familiar with Ethernet networks,
networking devices, routing protocols and the TCP/IP suite of protocols.
Before You Start
This section discusses the various requirements for the successful installation of
the Router. In order to avoid difficulties please read and make sure you
understand all the prerequisites for proper installation and operation of your new
ADSL Router.
Operating Systems
D-Link’s web-based management software for the Router can be used with any
browser-equipped PC running MicrosoftWindows95, Windows 98, Windows
98 SE, Windows ME, Windows 2000 and Windows NT 4.0.
ADSL Service
In order to use the Router, you must first have ADSL service established with
your local telephone company, or an Internet Service Provider (ISP). Contact
your local telephone company for information on the availability of ADSL service
in your area.
Micro-filters
Since ADSL and telephone services share the same copper wire to carry their
respective signals, a filtering mechanism must be used to avoid mutual
interference. You may need to install a micro-filter (low pass filter) device for
each telephone that shares the line with the ADSL line. Micro-filters are easy to
install in-line devices, which attaches to the telephone cable between the
telephone and wall jack. This device will not affect normal telephone services.
Your telephone company will have more information regarding the use and
installation of micro-filters.
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DSL-504 ADSL Router User’s Guide
Print this page for your records
VPI and VCI Settings
Your Telephone Company will provide two numbers, a Virtual Path Identifier
(VPI) and a Virtual Channel Identifier (VCI). You will need to enter these two
numbers during the configuration of the Router.
In order to ensure high quality of service and maximum performance, ADSL
technology employs Asynchronous Transfer Mode (ATM) networks (via the
DSLAM). ATM networks use Permanent Virtual Circuits (PVCs) to establish
end-to-end software defined logical connections. The VPI and VCI are contained
in the ATM cell header. These numbers help manage ATM network connections
and identify logical links formed by PVCs.
For convenient reference, you may want to record the VPI and VCI numbers
here, as well as the MAC (Physical) Address of the Router.
VPI, VCI and MAC Address
VPI _____________ VCI _______________
MAC Address ______________________________
Global IP Address
Your ISP will supply you with a unique global IP address that you must use if
you choose to connect to the ISPs network using the RFC 1483 defined “Bridged
Ethernet” encapsulation method. If you use PPPoA to define the connection to
your ISP you do not need to assign a global IP address. This is explained further
in chapter 3 in the discussion of Connection Method.
Global IP Address _______-_______-_______-_______
Default Gateway IP Address
Some ISPs require the use of a default gateway router. If this is necessary, your
telephone company or ISP will provide the IP address of a device to be used for
this purpose. Use the space provided below to record the IP address of the ISPs
default gateway router.
Default Gateway IP Address _______-_______-_______-_______
Print this page for your records
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DSL-504 ADSL Router User’s Guide
1
Introduction
This chapter describes the DSL-504 ADSL Router and its features and gives a
brief introduction to ADSL technology.
Router Description and Operation
The DSL-504 ADSL Router is designed to provide a simple, cost-effective and
secure ADSL Internet connection for your small to medium sized corporate LAN.
The DSL-504 combines the benefits of high-speed ADSL connection technology
and TCP/IP routing with Ethernet capabilities in one compact and convenient
package. ADSL connection technology enables many interactive multimedia
applications such as video conferencing and collaborative computing.
The Router is easy to install and use. The DSL-504 offers four dedicated Ethernet
LAN ports using standard RJ-45 connectors. The ADSL connection is made using
ordinary twisted-pair telephone line with standard RJ-11 connectors. This
arrangement means that several PCs can be networked and connected to the
Internet.
The Router can be used for IP packet routing over the WAN and also supports
transparent bridging. The Router is ideal for secure telecommuting through the
use of virtual private networks (VPN). Cost saving capabilities of the Router
includes NAT (Network Address Translator) and DHCP (Dynamic Host
Configuration Protocol), which allow you connect several hosts to the Internet
using a single global IP address.
ADSL Technology
Asymmetric Digital Subscriber Line (ADSL) is an access technology that utilizes
ordinary copper telephone lines to enable broadband high-speed digital data
transmission and interactive multimedia applications for business and
residential customers. Using existing copper telephone lines forgoes the need for
upgrading or adding expensive new cable.
ADSL devices use digital coding techniques that greatly increase the potential
capacity of phone lines without interfering with regular telephone services. For
the ADSL user, this means much faster data communications and the potential
for interactive video capabilities. ADSL devices make it possible to enjoy benefits
such as high-speed Internet access, telecommuting (remote LAN access),
collaborative computing, distance learning, movies on demand and multi-player
video gaming, without experiencing any loss of quality or disruption of voice/fax
telephone capabilities.
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DSL-504 ADSL Router User’s Guide
ADSL provides a dedicated service over a single telephone line operating at
speeds of up to 8 Mbps downstream (to the user) and up to 800 Kbps upstream (to
the ADSL service provider’s central office), depending on local telephone line
conditions. These conditions are ideal for many time sensitive user applications.
A secure point-to-point connection is established between the user and the
central office of the ADSL service provider. The user is always connected thus
eliminating dial-up time and simplifying connectivity issues.
Product Features
The DSL-504 ADSL Router utilizes the latest ADSL enhancements and router
technologies to provide a robust Internet gateway suitable for most small to
medium sized offices.
PPP (Point-to-Point Protocol) Security
The Router supports PAP (Password Authentication Protocol) and CHAP
(Challenge Handshake Authentication Protocol) useful for secure telecommuting
and remote access to the LAN.
DHCP Support (Dynamic Host Configuration Protocol)
DHCP (Dynamic Host Configuration Protocol) allows IP addresses to be
automatically and dynamically assigned to hosts on your network.
Network Address Translation (NAT)
For small office environments, the Router allows multiple users on the LAN to
access the Internet concurrently through a single Internet account. This provides
Internet access to everyone in the office for the price of a single user.
NAT address mapping can also be used to link two IP domains via a LAN-to-LAN
connection.
VPN (Virtual Private Network)
A VPN is a method to provide economical and secure data transfer across a public
network (such as the Internet). It is ideal for telecommuting and LAN-to-LAN
connection.
TCP/IP (Transfer Control Protocol/Internet Protocol)
The DSL-504 supports TCP/IP protocol. It is compatible with access servers
manufactured by all major vendors.
RIP-1/RIP-2
The DSL-504 supports both RIP-1 and RIP-2 exchanges with other routers. Using
both versions can allow the Router to communicate with RIP enabled devices.
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DSL-504 ADSL Router User’s Guide
Static Routing
This allows you to select a data path to a particular network destination that will
remain in the routing table and never “age out”. This enables you to route IP
traffic to a specific destination within your LAN (for example to a another router
or a server) or outside your network (to an ISP defined default gateway for
instance).
Default Routing
This allows you to choose a default path for incoming data packets for which the
destination address is unknown. This is particularly useful when the Router
functions as the sole connection to the Internet.
ATM (Asynchronous Transfer Mode)
The DSL-504 supports Bridged Ethernet over ATM, IP over ATM and PPP over
ATM. The Router can support up to eight Virtual Circuit Connections (VCCs).
Precise ATM Traffic Shaping
Traffic shaping is a method of controlling the flow rate of ATM data cells. It
functions to establish the Quality of Service for ATM data transfer.
G.hs (Auto-handshake)
The Router can automatically choose either the G.lite or G.dmt ADSL connection
standards.
High Performance
Very high rates of data transfer are possible with the Router. Up to 8 Mbps
downstream bit rate using G.dmt.
Full Network Management
The DSL-504 incorporates SNMP (Simple Network Management Protocol)
support and menu-driven network management via an RS-232 or Telnet
connection.
Telnet Connection
The Telnet feature enables a network manager to access the Router’s
management software remotely.
Easy Installation
The Router uses a web-based interface management system compatible with
most standard web browsers for easy installation and management.
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DSL-504 ADSL Router User’s Guide
Standards Compatability and Compliance
The DSL-504 complies with or is compatible with the following standards as
recognized by their respective agencies.
♦ ITU G.994.1 (G.Hs Auto-handshake) compliant
♦ ITU G.992.1 (G.dmt Full-rate ADSL) compliant
♦ ITU G.992.2 (G.lite “Splitterless ADSL”) compliant
♦ ITU-T Rec. I.361 compliant
♦ ITU-T Rec. I.610 compliant
♦ RFC 1483 Multi-protocol over ATM “Bridged Ethernet” compliant
♦ RFC 2364 PPP over ATM compliant
♦ RFC 2516 PPP over Ethernet compliant
♦ RFC 1334 PPP Authentication Protocol compliant
♦ RFC 1994 Challenge Handshake Authentication Protocol compliant
♦ RFC 791 Internet Protocol compliant
♦ RFC 826 Address Resolution Protocol compliant
♦ RFC 950 Internet Control Message Protocol compliant
♦ RFC 1631 Net Address Translator compliant
♦ Supports RFC 2131 and RFC 2132 DHCP functions including: automatic
assignment of IP address, use of subnet mask and default gateway and
provision of DNS server address for all hosts
♦ Compatible with all T1.413 issue 2 (full rate DMT over analog POTS), and
CO DSLAM equipment
♦ IEEE 802.3 Ethernet compliant
♦ IEEE 802.3u Fast Ethernet compliant
♦ IEEE 802.1d Spanning compliant
♦ Supports RIP v1 and RIP v2
♦ Supports Static Routing
♦ Supports ATM Forum UNI V3.1/4.0 PVC
♦ Minimum ATM cell forwarding rate: 640 Kbps
♦ Supports up to eight simultaneous ATM virtual connections
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DSL-504 ADSL Router User’s Guide
Unpacking
Open the shipping carton and carefully remove all items. In addition to this
User's Guide, ascertain that you have:
1. DSL-504 ADSL Router
2. DSL-504 tool kit on CD-ROM
3. Quick Installation Guide
4. RS-232 (DB-9 to DB-9) cable for console connection
5. Telephone cable with RJ-11 connectors for ADSL connection
6. AC power adapter suitable for your electric service
Front Panel
Place the Router in a location that permits an easy view of the LED indicators
shown in the front panel diagram below.
Front Panel
Rear Panel
The rear panel of the Router provides access to the AC power adapter cord
connection as well as the port connections.
Rear Panel
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DSL-504 ADSL Router User’s Guide
LED Indicators
LED Indicators
The LED Indicators read as follows:
Power Solid steady green light indicates the unit is powered on.
Status Light will be dark during power on self test, blink green during the ADSL
negotiation phase, and light solid steady green during normal operation. If it
blinks green after the ADSL negotiation, a failure of either the ADSL port or an
Ethernet port has occurred.
ADSL: Link Steady green light indicates a valid ADSL connection.
ADSL: Act Blinking green light indicates an active WAN session.
Link/Act: Steady green light indicates a valid Ethernet connection, blinking
green light indicates an active Ethernet session. One LED per port.
10/100M Steady green light indicates a 100 Mbps connection, a 10 Mbps
connection will remain unlit. One LED per port.
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DSL-504 ADSL Router User’s Guide
2
Hardware Installation
This section discusses the cable connections you will need to make in order to use
the Router. The Router has four Ethernet ports, so there are many possibilities
for your Ethernet setup. It is advisable to give careful consideration to the
location of the Router on your network as well as its physical location. A well
planned Ethernet layout should be flexible and allow for future expansion.
When selecting the location for the Router, allow room to access the connections
on the rear panel. You will want to place the Router so that you will be able to
see the LED indicators on the front panel. Also, allow some space above the
Router for ventilation to avoid problems with overheating.
It may be convenient for you place the Router near the PC you intend to use for
initial configuration of the Router. For initial configuration of the device, you may
need convenient access to the RS-232 serial port on the rear panel. The RS-232
serial port is intended for use with text-based console management software for
the initial configuration and for out-of-band management of the Router. Whether
it is necessary to use an RS-232 console manager for first time set up depends on
how you allocate IP addresses on your network. Read Chapter 3, First Time Set
Up to help you decide how best to use the Router on your network.
Connect the Power
Insert the AC Power Adapter cord into the power receptacle located on the rear
panel of the Router and plug the adapter into a nearby power source. You should
see the Power LED indicator light up and remain lit.
Connect ADSL Line
You can use the twisted-pair ADSL cable (standard telephone cable) included
with the Router to connect to your telephone line. Plug one end of the cable into
the ADSL port (RJ-11 receptacle) on the rear panel of the Router and insert the
other end into the telephone wall jack. This connection provides the link between
the Router and the ISPs network including access to the Internet.
The Router must undergo a negotiation process to establish the terms of the
ADSL connection. During this negotiation the Status LED will light a steady
green, after which it will blink. If the ADSL line is disconnected, it will repeat
this process.
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DSL-504 ADSL Router User’s Guide
Connect Ethernet LAN to Router
The Router may be connected to any 10/100BASE-T Ethernet LAN or Ethernet
concentrating device. Connection to an Ethernet concentrating device such as a
switch or hub should use standard twisted-pair cable with RJ-45 connectors. The
4 dedicated RJ-45 ports on the Router are a crossed (MDI-X) connection ports.
Follow standard Ethernet guidelines when deciding what type of cable to use to
make this connection. Use Category 5 or better cable for 100 Mbps connections.
You should use either crossed cable or normal straight-through cable and a cross-
over adapter when connecting the Router to a normal (MDI-X) port on a switch or
hub. Use straight-through cable when connecting it to an uplink (MDI-II) port on
a hub or switch. When connecting the Router directly to a PC or server use a
straight-through cable. The Ethernet Link LED indicator corresponding to the
connected port will indicate a valid connection.
The rules governing Ethernet cable lengths apply to the LAN to Router
connection. Be sure that the cable connecting the LAN to the Router does not
exceed the 100-meter limit.
The diagram below illustrates a variety of ways you can incorporate the Router
into your Ethernet.
LAN to Router Connection
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DSL-504 ADSL Router User’s Guide
3
Web-based Router Configuration
Introduction
The DSL-504 offers an embedded Web-based (HTML) interface allowing users to
manage the Router from anywhere on the network through a standard web
browser, such as Netscape Navigator/Communicator or Microsoft Internet
Explorer. The Web browser acts as a universal access tool and can communicate
directly with the Router using the HTTP protocol. Your web browser window may
vary with the screen captures (pictures) in this guide. Verify that the PC using
the web manager is NOT using a proxy server.
Note: This version of the web-based manager does not accept Chinese language
input (or other languages requiring 2 bytes per character).
Getting Started
The web-based manager requires a java enabled web browser to manage the
DSL-504. Web browsers such as the Netscape Communicator version 4 and above
or the Internet Explorer versions 4.0 and above are operable.
Setting up the PC
Now that the physical connection is complete, you need to set the TCP/IP settings for your
computer to properly connect to the DSL-500. Follow these simple steps.
Right-Click the “Network Neighborhood” (Win 98/98SE) or “My Network Places” (Win
ME/2000) icon on your desktop and select “Properties.”
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DSL-504 ADSL Router User’s Guide
Highlight the line that reads “TCP/IP” and point to your installed Ethernet NIC.
Click “Properties.”
At this screen, select the IP Address tab.
Select “Obtain an IP Address Automatically.”
Click “OK.”
You will be prompted to reboot in Windows 98/98SE or ME
Click “Yes.”
For Windows 2000, restart your computer manually.
When your computer restarts, you will automatically receive an IP address form the DSL-500.
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DSL-504 ADSL Router User’s Guide
Management
In order to access the web-based management interface, it is necessary for both
the PC (used for management) and the Router to be on the same IP subnet. You
can either change the IP settings of the PC or change the IP address of the
Router. See Chapter 3 for information about assigning IP addresses on the
network and changing the IP address of the device. Appendix B contains a
general discussion of IP addressing.
To use the web-based management software, run the browser you have installed
on your computer and direct it to the IP address defined for the device. The first
time you access the web-based manager you will need to type the default IP
address, 192.168.0.1, in the address bar of the browser. The URL in the address
bar should read: http://192.168.0.1. If you change the IP address of the router,
then you will use the new IP address to access the web-based manager.
Important Note: In order to save any changes made to the Router (such as changing the IP address)
you must go to the Save Changes window and save the configuration settings to non-volatile RAM.
In the page that opens, click on the Login to web-based management module
button:
Login Button
A new window will appear and you will be prompted for a user name and
password. Use default user name admin and password admin for first time set
up.
User Login
Logging in will bring up the main page of the web-based management module.
Click the D-Link DSL-504 folder located below the D-Link logo in the upper left-
hand corner. This folder will open revealing the management menu options.
These options include PPPoE Configuration, DHCP Configuration, NAT
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DSL-504 ADSL Router User’s Guide
Configuration,Port Redirection, Advanced Filter/Firewall,Connection
Type, Line Condition,User Name and Password, Save Changes, Update
Firmware and Summary. The various management menus are explained
below.
After logging in, it will automatically show the default settings. If you need to
make changes to the configuration, please ask your service provider for correct
settings.
PPPoE Configuration
The PPPoE is another connection method used by the Router is Point-to-Point-
Protocol over Ethernet (PPPoE) as defined in RFC 2516. Use the PPPoE
Configuration window to define the PVC by configuring the VPI and VCI values
given to you by your DSL service provider. PPP also allows you to use the
security protocols PAP or CHAP to help protect your network from unwanted
intruders. This window is used to assign the user name and password used to
access your network or server. When you have set the correct VPI and VCI and
entered the user name and password, click the Connect button to establish the
ADSL connection to your ISP’s network. The window is also used to terminate
the Router’s ADSL connection and change connection methods.
If you wish to change the connection method (to Bridged Ethernet over IP or
PPPoA), please read the section on Connection Method later in this chapter.
To bring up the PPPoE Configuration window, click on the PPPoE Configuration
menu button and the following screen will appear:
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DSL-504 ADSL Router User’s Guide
PPPoE Configuration Window
PVC
Use this field to assign the VPI and VCI values for the Router. These numbers
are given to you by your ISP provider and must be entered correctly in order to
establish the ADSL connection. If these values are not correct the connection will
not be successful.
PPPoE Login
Use this field to assign a Login User Name and Password used to access to
your ISP’s network. The user name and password can be any combination of up
to 64 characters.
PPPoE Information
This field provides information regarding the status of the Router connection to
the ISP’s network. The ISP’s DHCP server should assign the global IP Address
for the Router automatically. The Connection Status will read Disconnect until
you are connected to the ISP’s WAN.
Connect to WAN
Once you have entered all the PVC and PPPoE Login values, click the Connect
button to initiate the PPP connection via the ADSL WAN interface. The
“handshake” process will take a few seconds. When the connection is established
the status will be indicated in the PPPoE Information field.
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DSL-504 ADSL Router User’s Guide
DHCP
DHCP Configuration Window
The Dynamic Host Configuration Protocol (DHCP) allows the Router to
dynamically assign IP addresses to network devices. Dynamic IP assignment
eliminates the need for the network administrator to maintain and monitor IP
address assignments and simplifies IP use because IP address are automatically
and dynamically assigned when a computer is powered-on.
Important Note: If you use DHCP to set your local IP addresses, the software IP settings of all
stations on the network will need to be manually configured to 0.0.0.0., or, as in the case of Windows
95 users, the “Obtain an IP address automatically” option under TCP/IP will have to be selected.
Start IP Address
This is the base (starting) address for the IP pool of unassigned IP addresses.
End IP Address
This is the last address of the contiguous IP address range to be used by the
Router for DHCP function.
Netmask
This mask informs the client how the destination IP address is to be divided into
network, subnet, and host parts.
Default Gateway
This specifies the Gateway IP Address that will be assigned to and used by the
DHCP clients.
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