ZyXEL Communications Prestige 681 User manual

Prestige 681
SDSL Router
User's Guide
Version 2.50
(Dec. 1999)

Prestige 681 SDSL Router
ii Copyright
P
Pr re es st ti ig ge e 6 68 81 1
SDSL Internet Access Router
Copyright
Copyright ©1999 by ZyXEL Communications Corporation.
The contents of this publication may not be reproduced in any part or as a whole, transcribed, stored in a
retrieval system, translated into any language, or transmitted in any form or by any means, electronic,
mechanical, magnetic, optical, chemical, photocopying, manual, or otherwise, without the prior written
permission of ZyXEL Communications Corporation.
Published by ZyXEL Communications Corporation. All rights reserved.
Disclaimer
ZyXEL does not assume any liability arising out of the application or use of any products, or software
described herein. Neither does it convey any license under its patent rights nor the patents' rights of others.
ZyXEL further reserves the right to make changes in any products described herein without notice. This
publication is subject to change without notice.
Trademarks
Trademarks mentioned in this publication are used for identification purposes only and may be properties of
their respective owners. ZyNOS is a registered trademark of ZyXEL Communications Corporation.

Prestige 681 SDSL Router
iii
FCC Interference Statement
Federal Communications Commission (FCC) Interference Statement
This device complies with Part 15 of FCC rules. Operation is subject to the following two conditions:
♦This device may not cause harmful interference.
♦This device must accept any interference received, including interference that may cause undesired
operations.
This equipment has been tested and found to comply with the limits for a CLASS B digital device pursuant
to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a commercial environment. This equipment generates, uses, and can radiate radio frequency
energy, and if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications.
If this equipment does cause harmful interference to radio/television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of
the following measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and the receiver.
•Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
•Consult the dealer or an experienced radio/TV technician for help.
Notice 1
Changes or modifications not expressly approved by the party responsible for compliance could void the
user's authority to operate the equipment.
Notice 2
Shielded RS-232 cables are required to be used to ensure compliance with FCC Part 15, and it is the
responsibility of the user to provide and use shielded RS-232 cables.

Prestige 681 SDSL Router
iv ZyXEL Limited Warranty
ZyXEL Limited Warranty
ZyXEL warrants to the original end user (purchaser) that this product is free from any defects in materials
or workmanship for a period of up to two (2) years from the date of purchase. During the warranty period,
and upon proof of purchase, should the product have indications of failure due to faulty workmanship
and/or materials, ZyXEL will, at its discretion, repair or replace the defective products or components
without charge for either parts or labor, and to whatever extent it shall deem necessary to restore the
product or components to proper operating condition. Any replacement will consist of a new or re-
manufactured functionally equivalent product of equal value, and will be solely at the discretion of ZyXEL.
This warranty shall not apply if the product is modified, misused, tampered with, damaged by an act of
God, or subjected to abnormal working conditions.
Note
Repair or replacement, as provided under this warranty, is the exclusive remedy of the purchaser. This
warranty is in lieu of all other warranties, express or implied, including any implied warranty of
merchantability or fitness for a particular use or purpose. ZyXEL shall in no event be held liable for indirect
or consequential damages of any kind of character to the purchaser.
To obtain the services of this warranty, contact ZyXEL's Service Center; refer to the separate Warranty
Card for your Return Material Authorization number (RMA). Products must be returned Postage Prepaid. It
is recommended that the unit be insured when shipped. Any returned products without proof of purchase or
those with an out-dated warranty will be repaired or replaced (at the discretion of ZyXEL) and the customer
will be billed for parts and labor. All repaired or replaced products will be shipped by ZyXEL to the
corresponding return address, Postage Paid (USA and territories only). If the customer desires some other
return destination beyond the U.S. borders, the customer shall bear the cost of the return shipment. This
warranty gives you specific legal rights, and you may also have other rights that vary from state to state.

Prestige 681 SDSL Router
v
Customer Support
Customer Support
If you have questions about your ZyXEL product(s) or desire assistance, please contact ZyXEL
Communications Corporation offices worldwide, in any one of the following ways. Our ftp sites are also
available for software and ROM upgrades.
EMAIL – Support Telephone Web Site
Method
Region EMAIL – Sales Fax FTP Site Regular Mail
[email protected]
[email protected]
[phone] www.zyxel.com
www.europe.zyxel.com
Worldwide
[email protected] [phone] ftp.europe.zyxel.com
ZyXEL Communications
Corp., 6 Innovation Road II,
Science-Based Industrial
Park, HsinChu, Taiwan.
[email protected] [phone]
800-255-4101
www.zyxel.com
North
America [email protected] [phone] ftp.zyxel.com
ZyXEL Communications Inc.,
1650 Miraloma Avenue,
Placentia, CA 92870, U.S.A.
[email protected] [phone] www.zyxel.dk
Scandinavia [email protected] [phone] ftp.zyxel.dk
ZyXEL Communications A/S,
Columbusvej 5, 2860
Soeborg, Denmark.
[email protected] [phone]
0810-099935 www.zyxel.at
Austria [email protected] [phone] ftp.zyxel.at Note: for Austrian
users with *.at domain only!
ZyXEL Communications
Services GmbH.,
Thaliastrasse 125a/2/2/4,
A-1160 Vienna, Austria
[email protected]e+49-2405-6909-0
0180-5213247
Tech Support hotline
0180-5099935
RMA/Repair hotline
www.zyxel.de
Germany
[email protected] [phone]
ZyXEL Deutschland GmbH.,
Adenauerstr. 20/A4, D-52146
Wuerselen, Germany.

Prestige 681 SDSL Router
vi Table of Contents
Table of Contents
Customer Support..............................................................................................................v
Table of Contents ..............................................................................................................vi
List of Figures...................................................................................................................xi
List of Tables...................................................................................................................xiv
Preface .............................................................................................................................xvi
Structure of this Manual..............................................................................................xviii
What is DSL? ..................................................................................................................xix
Chapter 1: Getting to Know Your SDSL Internet Access Router ..................................1-1
1.1 Prestige 681 SDSL Internet Access Router................................................................................................1-1
1.2 Features of the Prestige 681..........................................................................................................................1-1
1.3 Applications for the Prestige 681.................................................................................................................1-3
1.3.1 Internet Access......................................................................................................................................1-3
1.3.2 LAN to LAN Application....................................................................................................................1-4
Chapter 2: Hardware Installation & Initial Setup......................................................2-1
2.1 Front Panel LEDs OF P681...........................................................................................................................2-1
2.2 Prestige 681 Rear Panel and Connections..................................................................................................2-2
2.3 Additional Installation Requirements..........................................................................................................2-3
2.4 Housing............................................................................................................................................................2-3
2.5 Important Safety Instructions .......................................................................................................................2-3
2.6 Power On Your Prestige.................................................................................................................................2-5
2.7 Navigating the SMT Interface......................................................................................................................2-5
2.7.1 System Management Terminal Interface Summary ........................................................................2-7
2.8 Changing the System Password ...................................................................................................................2-8
2.9 Filename conventions ....................................................................................................................................2-8
2.9.1 Resetting the Prestige...........................................................................................................................2-9
2.10 General Setup.............................................................................................................................................2-9

Prestige 681 SDSL Router
vii
Table of Contents
2.10.1 Note on Bridging...........................................................................................................................2-10
2.11 Ethernet Setup..........................................................................................................................................2-10
2.11.1 General Ethernet Setup.................................................................................................................2-11
2.12 Protocol Dependent Ethernet Setup.....................................................................................................2-11
Chapter 3: WAN Setup...................................................................................................3-1
3.1 Frame Relay....................................................................................................................................................3-1
3.1.1 Frame relay frame format....................................................................................................................3-2
3.1.2 Connection setup..................................................................................................................................3-3
3.2 Setting up the WAN link...............................................................................................................................3-4
3.2.1 Frame Relay Options...........................................................................................................................3-5
Chapter 4: Internet Access............................................................................................4-1
4.1 Factory Ethernet Defaults.............................................................................................................................4-1
4.2 TCP/IP Parameters.........................................................................................................................................4-1
4.2.1 IP Address and Subnet Mask..............................................................................................................4-1
4.2.2 Private IP Addresses ............................................................................................................................4-2
4.2.3 RIP Setup...............................................................................................................................................4-2
4.2.4 DHCP Configuration............................................................................................................................4-3
4.3 Route IP Setup................................................................................................................................................4-4
4.4 TCP/IP Ethernet Setup and DHCP..............................................................................................................4-4
4.5 LANs & WANs ..............................................................................................................................................4-7
4.5.1 LANs, WANs and the Prestige...........................................................................................................4-7
4.6 Encapsulation..................................................................................................................................................4-8
4.6.1 RFC 1490...............................................................................................................................................4-8
4.6.2 PPP..........................................................................................................................................................4-8
4.7 DLCI.................................................................................................................................................................4-8
4.8 Internet Access Configuration.....................................................................................................................4-9
4.9 Single User Account....................................................................................................................................4-10
4.9.1 Advantages of SUA............................................................................................................................4-11
4.9.2 Single User Account Configuration................................................................................................4-11
4.10 Multiple Servers behind SUA ...............................................................................................................4-12
4.10.1 Configuring a Server behind SUA..............................................................................................4-13
Chapter 5: Remote Node Configuration.......................................................................5-1

Prestige 681 SDSL Router
viii Table of Contents
5.1 Remote Node Setup........................................................................................................................................5-1
5.1.1 Remote Node Profile.............................................................................................................................5-1
5.1.2 Outgoing Authentication Protocol.....................................................................................................5-4
5.1.3 Editing PPP Options.............................................................................................................................5-4
5.1.4 Remote Node Filter...............................................................................................................................5-5
Chapter 6: Remote Node TCP/IP Configuration.........................................................6-1
6.1 LAN-to-LAN Application.............................................................................................................................6-1
6.1.1 Editing TCP/IP Options.......................................................................................................................6-1
6.1.2 Static Route Setup.................................................................................................................................6-4
Chapter 7: IPX Configuration.......................................................................................7-1
7.1 IPX Network Environment............................................................................................................................7-1
7.1.1 Network and Node Number.................................................................................................................7-1
7.1.2 Frame Types...........................................................................................................................................7-1
7.1.3 External Network Number...................................................................................................................7-2
7.1.4 Internal Network Number....................................................................................................................7-2
7.2 Prestige 681 in an IPX Environment...........................................................................................................7-3
7.2.1 Prestige 681 on LAN with Server.......................................................................................................7-3
7.2.2 Prestige 681 on LAN without Server.................................................................................................7-3
7.3 IPX Ethernet Setup.........................................................................................................................................7-4
7.4 LAN-to-LAN Application with Novell IPX...............................................................................................7-5
7.4.1 IPX Remote Node Setup......................................................................................................................7-6
7.4.2 IPX Static Route Setup.........................................................................................................................7-8
Chapter 8: Bridging Setup.............................................................................................8-1
8.1 Bridging in General........................................................................................................................................8-1
8.2 Bridge Ethernet Setup....................................................................................................................................8-1
8.2.1 Remote Node Bridging Setup.............................................................................................................8-3
8.3 Bridge Static Route Setup.............................................................................................................................8-4
Chapter 9: Filter Configuration....................................................................................9-1
9.1 About Filtering................................................................................................................................................9-1
9.2 Configuring a Filter Set..................................................................................................................................9-3
9.2.1 Filter Rules Summary Menu...............................................................................................................9-4
9.3 Configuring a Filter Rule...............................................................................................................................9-6
9.3.1 TCP/IP Filter Rule.................................................................................................................................9-7

Prestige 681 SDSL Router
ix
Table of Contents
9.3.2 Generic Filter Rule .............................................................................................................................9-11
9.3.3 Novell IPX Filter Rule.......................................................................................................................9-13
9.4 Example Filter...............................................................................................................................................9-15
9.5 Filter Types and SUA ..................................................................................................................................9-18
9.6 Applying a Filter and Factory Defaults....................................................................................................9-18
9.6.1 Ethernet traffic.....................................................................................................................................9-18
9.6.2 Remote Node Filters ..........................................................................................................................9-19
Chapter 10: SNMP Configuration..............................................................................10-1
10.1 About SNMP............................................................................................................................................10-1
10.2 Configuring SNMP.................................................................................................................................10-1
Chapter 11: System Maintenance................................................................................11-1
11.1 System Status...........................................................................................................................................11-2
11.1.1 Console Port Speed.......................................................................................................................11-5
11.2 Log and Trace..........................................................................................................................................11-5
11.2.1 Viewing Error Log.........................................................................................................................11-5
11.2.2 Syslog And Accounting...............................................................................................................11-6
11.3 Diagnostic.................................................................................................................................................11-9
11.4 Backup Configuration..........................................................................................................................11-10
11.5 Restore Configuration..........................................................................................................................11-11
11.6 Upload Firmware...................................................................................................................................11-12
11.6.1 Upload Router Firmware............................................................................................................11-13
11.6.2 Upload Router Firmware using FTP........................................................................................11-13
11.6.3 Uploading Router Configuration File.......................................................................................11-14
11.6.4 Upload Router configuration File using FTP..........................................................................11-15
11.7 TFTP Transfer........................................................................................................................................11-15
11.8 Command Interpreter Mode................................................................................................................11-17
11.9 Boot module commands......................................................................................................................11-18
Chapter 12: Troubleshooting.......................................................................................12-1
12.1 Problems Starting Up the Prestige........................................................................................................12-1
12.2 Problems With the WAN Interface.......................................................................................................12-2
12.3 Problems with the LAN Interface.........................................................................................................12-2

Prestige 681 SDSL Router
xTable of Contents
12.4 Problems Connecting to a Remote Node or ISP.................................................................................12-2
Glossary .............................................................................................................................A
Index...................................................................................................................................G

Prestige 681 SDSL Router
xi
List of Figures
List of Figures
Figure 1-1 Internet Access Application _____________________________________________ 1-4
Figure 1-2 LAN-to-LAN Application via Frame Relay __________________________________ 1-5
Figure 1-3 LAN-to-LAN Application via Direct Connection______________________________ 1-5
Figure 2-1 Prestige 681 Front Panel. ______________________________________________ 2-1
Figure 2-2 Prestige 681 Rear Panel Connections _____________________________________ 2-2
Figure 2-3 Power-On Display____________________________________________________ 2-5
Figure 2-4 Login Screen ________________________________________________________ 2-5
Figure 2-5 SMT Main Menu _____________________________________________________ 2-7
Figure 2-6 Menu 23.1 - System Password ___________________________________________ 2-8
Figure 2-7 Menu 1 – General Setup_______________________________________________ 2-10
Figure 2-8 Menu 3 - Ethernet Setup_______________________________________________ 2-11
Figure 2-9 Menu 3.1 - General Ethernet Setup ______________________________________ 2-11
Figure 3-1 Dedicated Leased Lines – Multiple Sites ___________________________________ 3-1
Figure 3-2 Frame Relay Solution _________________________________________________ 3-2
Figure 3-3 Frame Relay Format __________________________________________________ 3-2
Figure 3-4 Menu 2 – WAN Setup__________________________________________________ 3-5
Figure 3-5 Menu 2.1 - Frame Relay Options_________________________________________ 3-6
Figure 4-1 Menu 1 – General Setup________________________________________________ 4-4
Figure 4-2 Menu 3.2 – TCP/IP and DHCP Ethernet Setup ______________________________ 4-5
Figure 4-3 LAN & WAN IPs_____________________________________________________ 4-7
Figure 4-4 Internet Access Setup__________________________________________________ 4-9
Figure 4-5 Menu 4 – Internet Access Setup for Single User Account ______________________ 4-12
Figure 4-6 Example of Multiple Servers behind SUA__________________________________ 4-13
Figure 4-7 Multiple Server Configuration __________________________________________ 4-14
Figure 5-1 Menu 11.1 Remote Node Profile__________________________________________ 5-2
Figure 5-2 Menu 11.2 - Remote Node PPP Options____________________________________ 5-4

Prestige 681 SDSL Router
xii List of Figures
Figure 5-3 Menu 11.5 – Remote Node Filter _________________________________________ 5-5
Figure 6-1 TCP/IP LAN-to-LAN Application_________________________________________ 6-1
Figure 6-2 Menu 11.3 __________________________________________________________ 6-2
Figure 6-3 Sample IP Addresses for a TCPI/IP LAN-to-LAN Connection ___________________ 6-2
Figure 6-4 Example of Static Routing Topology ______________________________________ 6-5
Figure 6-5 Menu 12 - IP Static Route Setup _________________________________________ 6-5
Figure 6-6 Edit IP Static Route___________________________________________________ 6-6
Figure 7-1 NetWare Network Numbers _____________________________________________ 7-2
Figure 7-2 Prestige 681 in an IPX Environment ______________________________________ 7-3
Figure 7-3 Menu 3.3 - Novell IPX Ethernet Setup _____________________________________ 7-4
Figure 7-4 LAN-to-LAN Application with Novell IPX __________________________________ 7-5
Figure 7-5 Menu 11.3 - Remote Node Novell IPX Options_______________________________ 7-6
Figure 7-6 Menu 12.2 - Edit IPX Static Route________________________________________ 7-8
Figure 8-1 Menu 3.5 - Bridge Ethernet Setup ________________________________________ 8-2
Figure 8-2 Menu 11.3 - Remote Node Bridging Options ________________________________ 8-3
Figure 8-3 Menu 12.3 - Bridge Static Route Setup_____________________________________ 8-4
Figure 8-4 Menu 12.3.1 - Edit Bridge Static Route ____________________________________ 8-4
Figure 9-1 Filter Rule Process ___________________________________________________ 9-2
Figure 9-2 Menu 21 - Filter Set Configuration _______________________________________ 9-3
Figure 9-3 NetBIOS_WAN Filter Rules Summary _____________________________________ 9-3
Figure 9-4 NetBIOS _LAN Filter Rules Summary _____________________________________ 9-4
Figure 9-5 Telnet Filter Rules Summary ____________________________________________ 9-4
Figure 9-6 Menu 21.1.1 - TCP/IP Filter Rule ________________________________________ 9-7
Figure 9-7 Executing an IP Filter ________________________________________________ 9-10
Figure 9-8 Menu 21.1.2 - Generic Filter Rule _______________________________________ 9-11
Figure 9-9 Menu 21.1.3 - IPX Filter Rule __________________________________________ 9-13
Figure 9-10 Telnet Filter Example ________________________________________________ 9-15
Figure 9-11 Example Filter – Menu 21.1.1 __________________________________________ 9-16

Prestige 681 SDSL Router
xiii
List of Figures
Figure 9-12 Example Filter Rules Summary – Menu 21.3 _______________________________ 9-17
Figure 9-13 Protocol and Device Filter Sets _________________________________________ 9-18
Figure 9-14 Filtering Ethernet traffic ______________________________________________ 9-19
Figure 9-15 Filtering Remote Node traffic___________________________________________ 9-19
Figure 10-1 Menu 22 - SNMP Configuration_________________________________________ 10-1
Figure 11-1 Menu 24 - System Maintenance _________________________________________ 11-1
Figure 11-2 Menu 24.1 - System Maintenance – Status _________________________________ 11-2
Figure 11-3 System Information and Console Port Speed _______________________________ 11-3
Figure 11-4 System Maintenance - Information_______________________________________ 11-4
Figure 11-5 Menu 24.2.2 – System Maintenance – Console Port Speed_____________________ 11-5
Figure 11-6 Examples of Error and Information Messages ______________________________ 11-6
Figure 11-7 Menu 24.3.2 - System Maintenance - Syslog and Accounting ___________________ 11-6
Figure 11-8 Menu 24.4 - System Maintenance - Diagnostic______________________________ 11-9
Figure 11-9 Backup Configuration _______________________________________________ 11-10
Figure 11-10 HyperTerminal Screen_______________________________________________ 11-10
Figure 11-11 Successful Backup __________________________________________________ 11-11
Figure 11-12 Restore Configuration _______________________________________________ 11-11
Figure 11-13 HyperTerminal Screen_______________________________________________ 11-12
Figure 11-14 Successful Backup __________________________________________________ 11-12
Figure 11-15 Menu 24.7 - System Maintenance - Upload Firmware _______________________ 11-13
Figure 11-16 Menu 24.7.1 - Uploading Router Firmware _______________________________ 11-13
Figure 11-17 Menu 24.7.2 - System Maintenance - Upload Router Configuration File _________ 11-15
Figure 11-18 TFTP Example ____________________________________________________ 11-17
Figure 11-19 Command Mode____________________________________________________ 11-18
Figure 11-20 Boot module commands______________________________________________ 11-19

Prestige 681 SDSL Router
xiv List of Tables
List of Tables
Table 2-1 Front Panel LED Description _____________________________________________ 2-1
Table 2-2 Main Menu Commands __________________________________________________ 2-6
Table 2-3 Main Menu Summary____________________________________________________ 2-7
Table 2-4 Filename Conventions______________________________________________________ 2-9
Table 2-5 General Setup Menu Fields ______________________________________________ 2-10
Table 3-1 Frame Relay Format ____________________________________________________ 3-3
Table 3-2 SDSL Maximum Transmission Distances (AWG 26, 0.4mm) _______________________ 3-4
Table 3-3 Menu 2 – WAN Setup Fields_______________________________________________ 3-5
Table 3-4 Menu 2.1 - Frame Relay Options Fields______________________________________ 3-6
Table 4-1 DHCP Ethernet Setup Menu Fields _________________________________________ 4-6
Table 4-2 TCP/IP Ethernet Setup Menu Fields_________________________________________ 4-6
Table 4-3 Data Link Connection Identifiers ___________________________________________ 4-8
Table 4-4 Internet Account Information______________________________________________ 4-9
Table 4-5 Internet Access Setup Menu Fields_________________________________________ 4-10
Table 4-6 Single User Account Menu Fields _________________________________________ 4-12
Table 4-7 Services vs. Port number ________________________________________________ 4-14
Table 5-1 Remote Node Profile Menu Fields __________________________________________ 5-2
Table 5-2 Remote Node PPP Options Menu Fields _____________________________________ 5-4
Table 6-1 TCP/IP related fields in Menu 11.1 - Remote Node Profile________________________ 6-3
Table 6-2 TCP/IP Remote Node Configuration ________________________________________ 6-3
Table 6-3 Edit IP Static Route Menu Fields___________________________________________ 6-6
Table 7-1 Novell IPX Ethernet Setup Fields___________________________________________ 7-4
Table 7-2 Remote Node Novell IPX Options___________________________________________ 7-7
Table 7-3 Edit IPX Static Route Menu Fields__________________________________________ 7-9
Table 8-1 Bridge Ethernet Setup Menu - Handle IPX Field Configuration ____________________ 8-2
Table 8-2 P681 Remote Node Network Layer Menu Bridge Options_________________________ 8-3

Prestige 681 SDSL Router
xv
List of Tables
Table 8-3 Bridge Static Route Menu Fields ___________________________________________ 8-5
Table 9-1 Abbreviations Used in the Filter Rules Summary Menu___________________________ 9-5
Table 9-2 Abbreviations Used If Filter Type Is IP_______________________________________ 9-6
Table 9-3 Abbreviations Used If Filter Type Is IPX______________________________________ 9-6
Table 9-4 Abbreviations Used If Filter Type Is GEN_____________________________________ 9-6
Table 9-5 TCP/IP Filter Rule Menu Fields____________________________________________ 9-7
Table 9-6 Generic Filter Rule Menu Fields __________________________________________ 9-12
Table 9-7 IPX Filter Rule Menu Fields______________________________________________ 9-14
Table 10-1 SNMP Configuration Menu Fields_______________________________________ 10-2
Table 11-1 System Maintenance - Status Menu Fields _________________________________ 11-3
Table 11-2 Fields in System Maintenance - Information________________________________ 11-4
Table 11-3 System Maintenance Menu Syslog Parameters______________________________ 11-7
Table 11-4 System Maintenance Menu Diagnostic___________________________________ 11-10
Table 12-1 Troubleshooting the Start-Up of your Prestige ______________________________ 12-1
Table 12-2 Troubleshooting the SDSL connection ____________________________________ 12-2
Table 12-3 Troubleshooting the LAN Interface_______________________________________ 12-2
Table 12-4 Troubleshooting a Connection to a Remote Node or ISP ______________________ 12-2

Prestige 681 SDSL Router
xvi Preface
Preface
About Your SDSL Internet Access Router
Congratulations on your purchase of the Prestige 681 SDSL Router. Don’t forget to register your Prestige
(fast, easy online registration atwww.zyxel.com) for free future product updates and information.
The Prestige 681 (P681) is an SDSL router used for Internet/LAN access via an SDSL line. The Prestige
681 supports multi-protocol routing for TCP/IP and Novell IPX, as well as transparent bridging for other
protocols. We will refer to the Prestige 681 as the P681 or simply the Prestige from now on.
The P681 SDSL router supports symmetrical multi-rate data transmission speedsfrom 144Kbps up to
2320Kbps. The actual rate depends on the copper category of your telephone wire, distance from the central
office and the type of SDSL service subscribed. See the sections below for more background information
on DSL and SDSL.
The P681 uses 2B1Q line code with echo cancellation for high data rate transmissions over a single twisted
telephone wire pair without being affected by bridge taps or mixed cable links. It also provides high
immunity from background noise.
The P681's 10/100M auto-negotiating LAN interface enables fast data transfer of either 10Mbps or
100Mbps in either half-duplex or full-duplex mode depending on your Ethernet network.
Your Prestige is easy to install and to configure. All functions of the Prestige are software configurable via
the SMT (System Management Terminal) Interface.
About This User's Guide
This user's guide covers all operations of the Prestige 681 and shows you how to get the best out of the
multiple advanced features of your SDSL Internet Access Router. It is designed to guide you through the
correct configuration of your Prestige 681 for various applications.
Related Documentation
ØPNC Disk
More detailed information about the Prestige and examples of its use can be found in our PNC (Prestige
Network Commander – an alternative windows-based configuration wizard) Disk. This disk contains
information on configuring your P681 for Internet Access, a General FAQ, an Advanced FAQ,
Applications Notes, Troubleshooting, Reference CI Commands as well as bundled software.
ØRead Me First
Our Read Me First is designed to help you get your Prestige up and running right away. It contains a
detailed easy to follow connection diagram, Prestige default settings, handy checklists, information on

Prestige 681 SDSL Router
xvii
Structure of the Manual
setting up your PC, information on installing and using the Prestige Network Commander, our windows-
based Internet Access configuration wizard.
ØPacking List Card
Finally you should have a Packing List Card which lists all items that should have come with your Prestige.
Syntax Conventions
•“Enter” means for you to type one or more characters and press the carriage return. “Select” or
“Choose” means for you to select one from the predefined choices.
•The SMT menu titles and labels are inBold Times font. The choices of a menu item are inBold
Arial font. A single keystroke is in Arial font and enclosed in square brackets, for instance, [ENTER]
means the Enter, or carriage return, key; [ESC] means the Escape key.
•For brevity’s sake, we will use “e.g.” as a shorthand for “for instance”, and “i.e.” as a shorthand for
“that is” or “in other words” throughout this manual.

Prestige 681 SDSL Router
xviii Preface
Structure of this Manual
The following section offers some background information on SDSL. Skip to Chapter 1 if you wish to
begin working with your router right away.
Getting Started (Chapters 1-3)
This helps you connect, install and setup your Prestige to operate
on your network and introduces Frame Relay.
The Internet (Chapter 4)
This shows you how to configure your Prestige for Internet access.
Advanced Applications (Chapters 5-8)
Describes how to use your Prestige for more advanced applications
such as LAN-to-LAN connectivity for TCP/IP and Novell IPX, and
transparent bridging for other protocols.
Management & Maintenance (Chapters 9-11)
This shows you how to create/apply filters and manage/maintain
your system.
Troubleshooting (Chapter 12)
This provides information about solving common problems.

Prestige 681 SDSL Router
xix
What is DSL?
What is DSL?
DSL (Digital Subscriber Line)enhances the data capacity of the existing twisted-pair wire that runs
between the local telephone company switching offices and most homes and offices. While the wire itself
can handle higher frequencies, the telephone switching equipment is designed to cut off signals above 4,000
Hz to filter noise off the voice line, but now everybody is searching for ways to get more bandwidth to
improve access to the Web - hence DSL technologies!
There are actually seven types of DSL service, ranging in speeds from 16 Kbits/sec to 52 Mbits/sec. The
services are either symmetrical (traffic flows at the same speed in both directions), or asymmetrical (the
downstream capacity is higher than the upstream capacity).
As data rates increase, the carrying distance decreases. That means that users who are beyond a certain
distance from the telephone company’s central office may not be able to obtain the higher speeds (see Table
3-2forSDSL Maximum Transmission Distances). A SDSL connection is a point-to-point dedicated circuit,
meaning that the link is always up and there is no dialing required.
SDSL
SDSL (Symmetrical Digital Subscriber Line)is a symmetrical, bi-directional DSL service that operates on
one twisted-pair wire. It can provide data rates up to 2.3 Mbits/sec. Unlike traditional HDSL systems, which
use two twisted pair, SDSL reduces equipment and lease-line costs by providing the same service using
only one twisted pair and one modem at each end. SDSL is symmetric, which means you get the same
amount of bandwidth to and from the Internet. SDSL provides speeds up to 12 times faster than an ISDN
line and up to 50 times that of an analog modem connection at a fraction of the price of traditional dedicated
access services.
The "always-on" digital connection provides the stability and consistent high bandwidth so crucial to
today's online business community, allowing applications such as video conferencing, distance learning and
high-powered Web browsing to perform with peak efficiency. SDSL allows Webmasters to set-up a web
server, mail server and any other Internet service with increased bandwidth yet no additional charges.
Because SDSL is symmetric, it is ideal for businesses, especially if you host a web site. It provides you with
the high bandwidth required for uploading and downloading large data files and graphics. SDSL also gives
you the bandwidth you need to retrieve information from Internet POPs, Internet servers and private data
networks.
These are the main characteristics of SDSL:
•Continuous
Connection SDSL users are never disconnected. There is no wait for dialup, where
ISDN and regular analog modems often take half a minute to establish a
connection.
•Dedicated
Bandwidth You select the line speed and it is “symmetric,” i.e., the same bandwidth in
both directions.

Prestige 681 SDSL Router
xx What is DSL?
•Investment
Protection SDSL is scalable, offering customers a flexible upgrade path. You can adjust your SDSL router when you decide you need a higher access speed.
This is an internal procedure; no site visit is necessary.
•Low Maintenance SDSL connectivity (unlike ISDN) requires no complex manual
configuration; SDSL equipment is simply "plug and play."
Comparisons with other high-speed technologies:
Cable Modems
•With most Cable Modem systems, bandwidth is shared by a large number of clients. This means
that users may not achieve maximum transfer rates if the network is busy. The SDSL circuit is
point-to-point, which means that all bandwidth on the circuit is dedicated to a single client.
•If your company needs fast Internet access then SDSL allows you to transfer data up to 3 times
faster than with a cable modem.
ISDN
•ISDN service is considerably slower than SDSL. ISDN equipment is generally limited to 128k
plus compression, which might give you speeds of up to 512 Kbps. SDSL gives you speeds of up
2.3Mbps.
•ISDN does have the ability to travel over very large distances (across the country) while SDSL is
very distance limited.
T1
•T1 is very expensive because it requires a high speed, noise conditioned phone line. SDSL works
over a simple "copper loop" and does not require an expensive conditioned line.
•T1 delivers 1.5 Mbps in both directions over the line. SDSL delivers speeds of up to 2.3 Mbps in
both directions.