D-Link DI-106 Series User manual

Copyright Statement
Copyright ©1998 D-Link Corporation
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 from D-Link
Corporation/D-Link Systems Inc., as stipulated by the United
States Copyright Act of 1976.
Trademarks
D-Link is a registered trademark of D-Link Corporation/D-Link
Systems, Inc.
All other trademarks belong to their respective owners.
Limited Warranty
This guide and the accompanying product are each provided “as
is,” without warranty as to their performance, merchantability or
fitness for any particular purpose. D-Link Corporation and D-Link
Systems, Inc. reserve the right to revise this publication and to
make changes to its contents at any time, without obligation to
notify any person or entity of such revisions or changes.

Table of Contents
INTRODUCTION .......................................................................1
Features .................................................................................................... 2
Ease of Installation..............................................................................................2
Built-in Hub .......................................................................................................2
ISDN Basic Rate Interface (BRI).........................................................................3
ISDN Leased Line...............................................................................................3
Multiple Networking Protocol Support................................................................4
Standard Phone Jacks..........................................................................................4
Dial On Demand.................................................................................................4
Bandwidth On Demand.......................................................................................4
Full Network Management..................................................................................5
RADIUS (Remote Authentication Dial In User Service) ......................................5
PPP Security.......................................................................................................5
MS (Microsoft) CHAP........................................................................................5
RIP-1/RIP-2........................................................................................................6
DHCP Support (Dynamic Host Configuration Protocol).......................................6
Call Control........................................................................................................6
Data Compression...............................................................................................7
Networking Compatibility...................................................................................7
Applications For Your DI-106 or DI-106M................................................ 7
Internet Access....................................................................................................7
Internet Single User Account (SUA)....................................................................7
Multiprotocol LAN-to-LAN Connection..............................................................8
Telecommuting Server........................................................................................8
What This Manual Covers.......................................................................... 8
What This Manual Doesn’t Cover.............................................................. 9
Other Resources ........................................................................................ 9
Packing List............................................................................................... 9
Additional Installation Requirements....................................................... 10
BEFORE YOU BEGIN .............................................................11

Road Map and Flow................................................................................. 11
Completing the Worksheet ....................................................................... 12
Ordering Your ISDN Line................................................................................. 13
Collecting General Setup Information................................................................ 14
Collecting ISDN Phone Line Information .......................................................... 14
Collecting Ethernet Setup Information............................................................... 17
INSTALLATION.......................................................................23
A Warning On Connection Cables ........................................................... 24
Mounting the Router................................................................................ 24
Connecting Your Computer and Your DI-106 or DI-106M....................... 24
Connecting the RS-232 Cable to the Router....................................................... 25
Connecting an ISDN Line to the Router.............................................................25
Connecting a Telephone or Fax Machine to the Router...................................... 26
Connecting Ethernet Cables to the Router......................................................... 26
Important Notes on Ethernet Hub Connections .................................................. 27
Connecting a Power Adapter to the Router........................................................ 29
The DI-106 or DI-106M’s Front Panel .................................................... 30
Powering Up Your DI-106 or DI-106M.................................................... 31
Navigating Through the System Management Terminal Interface............. 32
System Management Terminal Interface Summary................................... 33
General Setup.......................................................................................... 34
ISDN Setup.............................................................................................. 35
North American ISDN....................................................................................... 36
DSS1 & 1TR6 ISDN......................................................................................... 38
Ethernet Setup......................................................................................... 42
General Ethernet Setup..................................................................................... 42
TCP/IP and DHCP Ethernet Setup .................................................................... 43
Novell IPX Ethernet Setup................................................................................ 45
Bridge Ethernet Setup....................................................................................... 46
CONFIGURING FOR INTERNET ACCESS ...................................47

IP Addresses and the Internet .................................................................. 47
Internet Access Configuration.................................................................. 49
Single User Account ................................................................................ 52
Configuration for Single User Account.................................................... 54
Configuring Backup ISP Accounts........................................................... 55
REMOTE NODE CONFIGURATION............................................57
Bandwidth on Demand............................................................................. 63
Editing PPP Options................................................................................ 65
DIAL-IN CONFIGURATION.......................................................68
Telecommuting ........................................................................................ 69
Dial-In Server Application....................................................................... 69
Default Dial-In Setup............................................................................... 70
Dial-In Users Setup ................................................................................. 75
More on CLID .................................................................................................. 77
TCP/IP CONFIGURATION ......................................................79
IP Subnet Mask........................................................................................ 79
LAN-to-LAN Application ......................................................................... 80
Remote Node Setup ..........................................................................................81
Static Route Setup ............................................................................................ 83
NOVELL IPX CONFIGURATION ...............................................87
IPX Network Environment ....................................................................... 87
Frame Type....................................................................................................... 87
Network Numbers............................................................................................. 87
DI-106M on LAN with Server................................................................... 88
DI-106M on LAN without Server.............................................................. 88

IPX Spoofing ........................................................................................... 89
IPX Ethernet Setup.................................................................................. 89
LAN-to-LAN Application ......................................................................... 91
Remote Node Setup ..........................................................................................92
Static Route Setup.................................................................................... 94
BRIDGING CONFIGURATION....................................................97
IPX Spoofing ........................................................................................... 97
Bridge Ethernet Setup.............................................................................. 98
LAN-to-LAN Application ......................................................................... 99
Remote Node Setup ........................................................................................ 100
Default Dial-In Setup for Bridge ..................................................................... 101
Bridge Static Route Setup............................................................................... 101
FILTER CONFIGURATION......................................................103
About Filtering...................................................................................... 103
DI-106’s Filter Structure ....................................................................... 104
Configuring a Filter Set......................................................................... 104
Configuring a Filter Rule....................................................................... 107
TCP/IP Filter Rule.......................................................................................... 108
Generic Filter Rule......................................................................................... 112
Novell IPX Filter Rule.................................................................................... 114
SNMP...............................................................................116
About SNMP.......................................................................................... 116
Configuring Your DI-106M For SNMP Support..................................... 116
SYSTEM SECURITY..............................................................119
Configuring the SMT Password.............................................................. 120

Using RADIUS Authentication............................................................... 121
Installing a RADIUS Server............................................................................ 121
Configuring the DI-106M for RADIUS Authentication .................................... 122
Adding Users to the RADIUS Database........................................................... 124
Using RADIUS Authentication for CLID......................................................... 124
TELNET CONFIGURATION AND CAPABILITIES............................126
About Telnet Configuration ................................................................... 126
Telnet Capabilities................................................................................. 127
Single Administrator....................................................................................... 127
System Timeout.............................................................................................. 127
SYSTEM MAINTENANCE.......................................................128
System Status......................................................................................... 128
Terminal Baud Rate............................................................................... 132
Log and Trace ....................................................................................... 132
View Error Log............................................................................................... 133
Syslog And Accounting................................................................................... 133
Diagnostic............................................................................................. 135
Backup Configuration............................................................................ 138
Restore Configuration............................................................................ 138
Software Update .................................................................................... 139
Command Interpreter Mode................................................................... 140
Call Control .......................................................................................... 140
Call Control Parameters.................................................................................. 141
Blacklist ......................................................................................................... 142
Budget Management....................................................................................... 143
Call History.................................................................................................... 143
TROUBLESHOOTING............................................................145
Problems Starting Up the DI-106 or DI-106M....................................... 145
None of the LEDs are on when you power up the router .................................. 145

Connecting the RS-232 cable, cannot access the SMT ..................................... 145
Problems With the ISDN Line................................................................ 146
The ISDN initialization failed......................................................................... 146
The ISDN loopback test failed......................................................................... 146
Problems with the LAN Interface ........................................................... 147
Can’t PING any station on the LAN ................................................................ 147
Problems Connecting to a Remote Node or ISP ..................................... 147
Problems Connecting to a Remote User................................................. 148
ISDN SWITCH TYPES .........................................................149
Provisioning For U.S. Switches.............................................................. 149
Provisioning For the AT&T 5ESS Switches..................................................... 150
Provisioning For the Northern Telecom Switch ............................................... 151
GLOSSARY.........................................................................153
INDEX ................................................................................163

ISDNRouter
User’sGuide
Introduction
Congratulations on your purchase of a D-Link DI-106 series
remote access router with integrated Ethernet hub. No larger than
an ordinary modem, your router offers inexpensive yet complete
telecommunications and internetworking solutions for your home
or branch office. It is ideal for everything from Internet browsing to
receiving calls from Remote Dial-in Users and making LAN-to-
LAN connections to Remote Nodes.
Distinguishing features of the DI-106 series include support for a
full range of networking protocols such as TCP/IP (Transmission
Control Protocol/Internet Protocol, also known as IP), Novell IPX
(Internet Packet Exchange), and Transparent Bridging.
♦DI-106: ISDN S/T interface, IP routing
♦DI-106W: ISDN U interface, IP routing
♦DI-106M: ISDN S/T interface, IP/IPX routing, bridging
♦DI-106MW: ISDN U interface, IP/IPX routing, bridging
This complete solution also includes remote dial-in user support, an
Internet single-user account (Network Address Translation) option,
extensive network management capabilities, and solid security
features.

2Introduction
NOTE:
Throughout the remainder of this manual, the term
“DI-106” refers to any DI-106 or DI-106W, and the term
“DI-106M” refers to any DI-106M or DI-106MW.
Features
Each DI-106 series router is packed with features that give it the
flexibility to provide a complete networking solution for almost any
user.
Ease of Installation
Your DI-106 or DI-106M is a self-contained unit that is quick and
easy to install. Physically, it resembles an external modem;
however, it is a combination ISDN router and 10BASE-T Ethernet
hub, and it uses twisted-pair Ethernet cables to connect to the host
network.
Built-in Hub
As a 10BASE-T Ethernet hub, your DI-106 or DI-106M provides
six ports for connection of standard 10-Mbps Ethernet devices.
Five ports are designed for connection of network end nodes—
single-user computers, servers, bridges, other routers, etc.—
through standard “straight-through” twisted-pair cables; the sixth is
wired for making an “uplink” connection to another hub through
the same kind of cable for network expansion.

Introduction 3
ISDN Basic Rate Interface (BRI)
Using a standard S/T or U Interface (the DI-106 and DI-106M use
the S/T interface, while the DI-106W and DI-106MW use the U
interface) the DI-106 and DI-106M support a full range of switch
types. The switch type depends on the CO (Central Office) switch
your ISDN line is connected to. See the ISDN Switch Types chapter
for more information on North American, European, and Asian
ISDN firmware and switch types supported by these routers.
The two B-channels can be used independently for two
destinations. Or they can be bundled for one connection to support
bandwidth-on-demand.
ISDN Leased Line
If the router is set up for an ISDN leased line (that is, if any option
but Switch/Switch or Switch/Unused is selected for the B Channel
Usage control in setup menu 2, ISDN Setup, and the Transfer Type
control is set to Leased in either setup menu 4, Internet Access
Setup, or setup menu 11.1, Remote Node Profile), the router will
automatically initialize the leased-line connection each time it is
powered up or the settings in setup menu 2, 4, or 11.1 are saved.
The DI-106 and DI-106M implement the PPP echo mechanism for
verifying ISDN leased line status. The setting of the Idle Timeout
control in setup menu 11.1 will be used as the interval between two
LCP_Echo_Req messages. It is supposed that there exists an echo
reply corresponding to an echo request. Whenever an echo request
is sent, the counter will be incremented by one.
The send counter will be reset to zero after an echo response is
received. The leased-line error recovery mechanism will be

4Introduction
triggered after the send counter reaches 4. If the Idle Timeout
control is set to zero, the PPP echo mechanism will not be used.
Multiple Networking Protocol Support
The DI-106M is a multi-protocol router. It supports TCP/IP,
Novell IPX, and Transparent Bridging.
Standard Phone Jacks
The router is equipped with two standard phone jacks for
connecting telephones, fax machines, or modems. This allows the
ISDN line to be used for voice calls as well as data calls.
Dial On Demand
The Dial On Demand feature allows a DI-106 or DI-106M to
automatically place a call to a Remote Node whenever there is
traffic coming from any workstation on the LAN (Local Area
Network) to that remote site.
Bandwidth On Demand
Your DI-106 or DI-106M supports bandwidth up to 128 kbps
(kilobits—that is, thousands of bits—per second) over a single
ISDN BRI line. It incorporates PPP/MP (Point-to-Point Protocol/
Multilink Protocol) to bundle two B channels over a BRI line. In
addition, the router dynamically allocates bandwidth between the
two B channels, increasing or decreasing bandwidth as needed to
allow for greater efficiency in data transfer. It supports BAP
(Bandwidth Allocation Protocol) and BACP (Bandwidth Allocation

Introduction 5
Control Protocol) to manage the number of links in multilink
bundle.
Full Network Management
The DI-106M incorporates SNMP (Simple Network Management
Protocol) support and menu-driven network management via an
RS-232 or Telnet connection. In addition, both the DI-106 and the
DI-106M offer the Call Detail Record (CDR) function to help you
analyze and manage your telephone bill.
RADIUS (Remote Authentication Dial In User Service)
The RADIUS feature allows you to use a central external Unix-
based server to support thousands of users (DI-106M only).
PPP Security
The DI-106 and DI-106M support PAP (Password Authentication
Protocol) and CHAP (Challenge Handshake Authentication
Protocol).
MS (Microsoft) CHAP
Your DI-106 or DI-106M and a Microsoft Windows 95 or
Windows NT server can authenticate each other using Microsoft’s
proprietary CHAP algorithm. No special setup is needed to support
MS CHAP. Everything is done through PPP negotiation between
the router and the server.

6Introduction
RIP-1/RIP-2
Your DI-106 or DI-106M supports both RIP-1 and RIP-2 (Routing
Information Protocol versions 1 and 2) exchanges with other
routers. RIP version controls in setup menus 3.2 (TCP/IP and
DHCP Ethernet Setup) and 11.3 (Remote Node Network Layer
Options) let you control RIP use, and offer the following version
options: RIP-1 (accept and send RIP-1 messages only), RIP-2B
(accept RIP-1 and RIP-2 messages, both broadcast and multicast,
and send RIP-2 messages in broadcast format), and RIP-2M
(accept RIP-1 and RIP-2 messages, both broadcast and multicast,
and send RIP-2 messages in multicast format).
(The suggested choice in both menus is RIP-2B, except in
environments where there are routers that do not understand RIP-2
packets at all. Broadcast, above, means a destination MAC or IP
host address consisting of all binary ones; multicast means a MAC
address of 01:00:5E:00:00:09 hex or an IP destination address of
224.0.0.9.)
DHCP Support (Dynamic Host Configuration Protocol)
DHCP (Dynamic Host Configuration Protocol) allows you to
dynamically and automatically assign IP address settings to hosts on
your network.
Call Control
Your DI-106 or DI-106M provides budget management for
outgoing calls and maintains a “blacklist” of unreachable phone
numbers in order to save you the expense of unnecessary charges.

Introduction 7
Data Compression
The DI-106 and DI-106M incorporate Stac data compression and
CCP (Compression Control Protocol).
Networking Compatibility
The DI-106 and DI-106M are compatible with remote access
products from other companies such as Ascend, Cisco, and 3Com.
Furthermore, they support Microsoft Windows 95 and Windows
NT remote access capability.
Applications For Your DI-106 or DI-106M
Some applications for the DI-106 and DI-106M include:
Internet Access
Your DI-106 or DI-106M supports the TCP/IP protocol, which is
the language used for the Internet. It is also compatible with access
servers manufactured by major vendors such as Cisco and Ascend.
Internet Single User Account (SUA)
For small office environments, the DI-106 and DI-106M offer a
Single User Internet Account (also known as a Network Address
Translator, or NAT) from an ISP (Internet Service Provider). This
allows multiple users on the LAN to access the Internet
concurrently for the cost of a single user.
Single User Account address mapping can also be used for LAN to
LAN connections.

8Introduction
Multiprotocol LAN-to-LAN Connection
The DI-106 and DI-106M can dial to or answer calls from another
remote access router connected to a different network. The
DI-106M supports TCP/IP and Novell IPX, and has the capability
to bridge any Ethernet protocol.
Telecommuting Server
The DI-106 and DI-106M allow Remote Dial-in Users to dial in
and gain access to your LAN. This feature enables users that have
workstations with remote access capabilities, e.g., Windows 95, to
dial in using an ISDN terminal adapter (TA) to access the network
resources without physically being in the office.
What This Manual Covers
This manual is divided into five parts.
1. Part One, Getting Started, is structured as a step-by-step guide
to help you connect, install, and set up your DI-106 or DI-106M
to operate on your LAN.
2. Part Two, The Internet, describes how to configure the router
to connect to the Internet.
3. Part Three, Setting Up Advanced Applications, describes how
to use the router for more advanced applications, such as
TCP/IP routing and Bridging.
4. Part Four, Advanced Management, provides information on
advanced management features for network managers.

Introduction 9
5. Part Five, System Maintenance, describes maintenance features
for checking system status and logging errors.
Regardless of the application, it is important that you follow the
steps outlined in Part One to correctly connect your DI-106 or
DI-106M to your LAN. You can then refer to other chapters of the
manual depending on which applications you wish to use.
What This Manual Doesn’t Cover
This manual assumes that you know how to use your computer and
are familiar with your communications software. If you have
questions about using either one, refer to the manual for the
product.
Other Resources
For more information about your DI-106 or DI-106M check the
following sources:
♦Quick Start Guide.
♦Support disk.
Packing List
Before you proceed further, check all items you received with your
DI-106 or DI-106M against this list to make sure nothing is
missing. The complete package should include:
♦One DI-106 or DI-106M ISDN router.
♦One power adapter.

10 Introduction
♦One RS-232 cable.
♦One “straight-through” twisted-pair Ethernet cable.
♦One Support Disk.
♦This User’s Guide.
Additional Installation Requirements
In addition to the contents of your package, there are other
hardware and software requirements you need before you can
install and use your router. These requirements include:
♦An ISDN telephone line.
♦Ethernet connection(s) to your computer(s).
♦A computer equipped with an RS-232 port and
communications software configured to the following
parameters:
◊VT100 terminal emulation.
◊9600 baud.
◊No parity, 8 data bits, 1 stop bit.
After the router has been successfully connected to your network,
you can make future changes to the configuration using a Telnet
client application.

Before You Begin 11
Before You Begin
To ensure successful installation of your DI-106 or DI-106M, we
strongly recommend that you carefully follow the steps outlined in
the next two chapters. These chapters are designed as a guide for
you to collect the necessary information about your ISDN phone
line and the LAN which you will be connected to. Once this
information has been collected, it will be used to configure your
router.
After you have successfully configured your DI-106 or DI-106M,
see the appropriate chapters to set up your applications. For
Internet Access, see the Configuring for Internet Access chapter
starting on page 47.
Road Map and Flow
The chart below is provided as a step by step guide to successfully
installing your DI-106 or DI-106M.

12 Before You Begin
Completing the Worksheet
Before you continue, locate the worksheet at the end of this
chapter. This information worksheet has been provided to help you
get through setup and installation of your DI-106 or DI-106M as
easily as possible.