ZyXEL Communications Prestige 623R-T User manual

Prestige 623R-T
ADSL Dual-link Router
User's Guide
Version 3.40
November 2003

Prestige 623R-T ADSL Dual-link Router
ii Copyright
Copyright
Copyright © 2003 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 patent 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
ZyNOS (ZyXEL Network Operating System) is a registered trademark of ZyXEL Communications, Inc.
Other trademarks mentioned in this publication are used for identification purposes only and may be
properties of their respective owners.

Prestige 623R-T ADSL Dual-link Router
FCC Statement iii
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:
1. Reorient or relocate the receiving antenna.
2. Increase the separation between the equipment and the receiver.
3. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
4. 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.
Certifications
Refer to the product page at www.zyxel.com.

Prestige 623R-T ADSL Dual-link Router
iv ZyXEL 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 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 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. This warranty gives you specific legal rights, and you may also have other rights that vary
from country to country.
Safety Warnings
1. To reduce the risk of fire, use only No. 26 AWG or larger telephone wire.
2. Do not use this product near water, for example, in a wet basement or near a swimming pool.
3. Avoid using this product during an electrical storm. There may be a remote risk of electric shock from
lightening.

Prestige 623R-T ADSL Dual-link Router
Customer Support v
Customer Support
Please have the following information ready when you contact customer support.
• Product model and serial number.
• Warranty Information.
• Date that you received your device.
• Brief description of the problem and the steps you took to solve it.
METHOD
LOCATION
E-MAIL
SUPPORT/SALES
TELEPHONE/FAX WEB SITE/ FTP SITE REGULAR MAIL
[email protected]m.tw [phone] www.zyxel.com
www.europe.zyxel.com
ftp.zyxel.com
WORLDWIDE
[e-mail] [phone] ftp.europe.zyxel.com
ZyXEL Communications Corp.,
6 Innovation Road II, Science-
Based Industrial Park, Hsinchu
300, Taiwan.
[email protected]m [phone] www.us.zyxel.comNORTH
AMERICA
[e-mail] [phone] ftp.us.zyxel.com
ZyXEL Communications Inc.,
1130 N. Miller St.
Anaheim, CA 92806, U.S.A.
[email protected] [phone] www.zyxel.dkSCANDINAVIA
[e-mail] [phone] ftp.zyxel.dk
ZyXEL Communications A/S,
Columbusvej 5, 2860 Soeborg,
Denmark.
[email protected] [phone] www.zyxel.deGERMANY
[e-mail] [phone]
ZyXEL Deutschland GmbH.
Adenauerstr. 20/A2 D-52146
Wuerselen, Germany

Prestige 623R-T ADSL Dual-link Router
vi Table of Contents
Table of Contents
ADSL Dual-link Router................................................................................................................................... i
Copyright......................................................................................................................................................... ii
Federal Communications Commission (FCC) Interference Statement.....................................................iii
ZyXEL Limited Warranty ............................................................................................................................ iv
Customer Support........................................................................................................................................... v
Table of Contents ........................................................................................................................................... vi
List of Figures ..............................................................................................................................................xiii
List of Tables ............................................................................................................................................... xvii
List of Charts ............................................................................................................................................... xix
Preface ........................................................................................................................................................... xx
Introduction to DSL.................................................................................................................................... xxii
Getting Started.................................................................................................................................................I
Chapter 1 Getting To Know Your Prestige ................................................................................................1-1
1.1 Introducing the Prestige 623R-T ADSL Dual-link Router ........................................................1-1
1.2 Features of the Prestige..............................................................................................................1-1
1.3 Applications for the Prestige......................................................................................................1-3
1.3.1 Internet Access...................................................................................................................1-3
1.3.2 LAN to LAN Application ..................................................................................................1-4
Chapter 2 Introducing the Web Configurator ..........................................................................................2-1
2.1 Web Configurator Overview......................................................................................................2-1
2.2 Accessing the Prestige Web Configurator .................................................................................2-1
2.3 Navigating the Prestige Web Configurator ................................................................................2-2
2.4 Configuring Password................................................................................................................2-3
2.5 Resetting the Prestige.................................................................................................................2-4
2.5.1 Using The Reset Button .....................................................................................................2-4
Chapter 3 Wizard Setup..............................................................................................................................3-1
3.1 Wizard Setup Introduction.........................................................................................................3-1
3.2 Encapsulation.............................................................................................................................3-1
3.2.1 ENET ENCAP ...................................................................................................................3-1
3.2.2 PPP over Ethernet ..............................................................................................................3-1
3.2.3 PPPoA................................................................................................................................3-1
3.2.4 RFC 1483...........................................................................................................................3-2
3.3 Multiplexing...............................................................................................................................3-2
3.3.1 VC-based Multiplexing......................................................................................................3-2
3.3.2 LLC-based Multiplexing....................................................................................................3-2
3.4 VPI and VCI ..............................................................................................................................3-2
3.5 Wizard Setup Configuration: First Screen .................................................................................3-2
3.6 IP Address and Subnet Mask .....................................................................................................3-4
3.7 IP Address Assignment..............................................................................................................3-4

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Table of Contents vii
3.7.1 IP Assignment with PPPoA or PPPoE Encapsulation........................................................3-5
3.7.2 IP Assignment with RFC 1483 Encapsulation ...................................................................3-5
3.7.3 IP Assignment with ENET ENCAP Encapsulation ...........................................................3-5
3.7.4 Private IP Addresses...........................................................................................................3-5
3.8 Nailed-Up Connection (PPP) .....................................................................................................3-6
3.9 NAT ...........................................................................................................................................3-6
3.10 Wizard Setup Configuration: Second Screen .............................................................................3-6
3.10.1 PPPoA ................................................................................................................................3-6
3.10.2 RFC 1483 ...........................................................................................................................3-8
3.10.3 ENET ENCAP ...................................................................................................................3-9
3.10.4 PPPoE...............................................................................................................................3-11
3.11 DHCP Setup.............................................................................................................................3-12
3.11.1 IP Pool Setup....................................................................................................................3-13
3.12 Wizard Setup Configuration: Third Screen..............................................................................3-13
3.13 Wizard Setup Configuration: Connection Tests.......................................................................3-15
3.14 Test Your Internet Connection.................................................................................................3-16
LAN and WAN ...............................................................................................................................................II
Chapter 4 LAN Setup ..................................................................................................................................4-1
4.1 LAN Overview...........................................................................................................................4-1
4.1.1 LANs, WANs and the Prestige...........................................................................................4-1
4.2 DNS Server Address ..................................................................................................................4-1
4.3 DNS Server Address Assignment ..............................................................................................4-2
4.4 LAN TCP/IP ..............................................................................................................................4-2
4.4.1 Factory LAN Defaults........................................................................................................4-2
4.4.2 IP Address and Subnet Mask..............................................................................................4-3
4.4.3 RIP Setup ...........................................................................................................................4-3
4.4.4 Multicast.............................................................................................................................4-3
4.5 Configuring LAN .......................................................................................................................4-4
Chapter 5 WAN Setup .................................................................................................................................5-1
5.1 WAN Overview .........................................................................................................................5-1
5.2 PPPoE Encapsulation .................................................................................................................5-1
5.3 PPTP Encapsulation ...................................................................................................................5-1
5.4 Traffic Shaping...........................................................................................................................5-2
5.5 WAN Setup ................................................................................................................................5-3
NAT, Dynamic DNS and Time and Date .................................................................................................... III
Chapter 6 Network Address Translation (NAT)........................................................................................6-1
6.1 NAT Overview...........................................................................................................................6-1
6.1.1 NAT Definitions.................................................................................................................6-1
6.1.2 What NAT Does.................................................................................................................6-1
6.1.3 How NAT Works ...............................................................................................................6-2
6.1.4 NAT Application................................................................................................................6-2

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viii Table of Contents
6.1.5 NAT Mapping Types .........................................................................................................6-3
6.2 SUA (Single User Account) Versus NAT .................................................................................6-4
6.3 SUA Server................................................................................................................................6-5
6.3.1 Port Forwarding: Services and Port Numbers....................................................................6-5
6.3.2 Configuring Servers Behind SUA (Example)....................................................................6-6
6.4 Selecting the NAT Mode ...........................................................................................................6-7
6.5 Configuring SUA Server............................................................................................................6-8
6.6 Configuring Address Mapping.................................................................................................6-10
6.7 Editing an Address Mapping Rule ...........................................................................................6-12
Chapter 7 Dynamic DNS Setup ..................................................................................................................7-1
7.1 Dynamic DNS............................................................................................................................7-1
7.1.1 DYNDNS Wildcard ...........................................................................................................7-1
7.2 Configuring Dynamic DNS .......................................................................................................7-1
Chapter 8 Time and Date Setup .................................................................................................................8-1
8.1 Configuring Time and Date .......................................................................................................8-1
Remote Management and UPnP..................................................................................................................IV
Chapter 9 Remote Management Configuration........................................................................................9-1
9.1 Remote Management Overview.................................................................................................9-1
9.1.1 Remote Management Limitations......................................................................................9-1
9.1.2 Remote Management and NAT .........................................................................................9-2
9.1.3 System Timeout .................................................................................................................9-2
9.2 Telnet .........................................................................................................................................9-2
9.3 FTP ............................................................................................................................................9-2
9.4 Web............................................................................................................................................9-3
9.5 Configuring Remote Management.............................................................................................9-3
Chapter 10 Universal Plug-and-Play (UPnP) ..........................................................................................10-1
10.1 Universal Plug and Play Overview ..........................................................................................10-1
10.1.1 How do I know if I'm using UPnP? .................................................................................10-1
10.1.2 NAT Traversal .................................................................................................................10-1
10.1.3 Cautions with UPnP.........................................................................................................10-1
10.2 UPnP and ZyXEL ....................................................................................................................10-2
10.2.1 Configuring UPnP............................................................................................................10-2
10.3 Installing UPnP in Windows Example.....................................................................................10-3
10.3.1 Installing UPnP in Windows Me .....................................................................................10-3
10.3.2 Installing UPnP in Windows XP......................................................................................10-4
10.4 Using UPnP in Windows XP Example ....................................................................................10-5
10.4.1 Auto-discover Your UPnP-enabled Network Device ......................................................10-5
10.4.2 Web Configurator Easy Access .......................................................................................10-7
Maintenance ................................................................................................................................................... V
Chapter 11 Maintenance ........................................................................................................................... 11-1
11.1 Maintenance Overview ............................................................................................................11-1

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Table of Contents ix
11.2 System Status Screen ...............................................................................................................11-1
11.2.1 System Statistics...............................................................................................................11-4
11.3 DHCP Table Screen .................................................................................................................11-6
11.4 Diagnostic Screens ...................................................................................................................11-7
11.4.1 Diagnostic General Screen ...............................................................................................11-7
11.4.2 Diagnostic DSL Line Screen............................................................................................11-9
11.5 Firmware Screen ....................................................................................................................11-10
SMT General Configuration ....................................................................................................................... VI
Chapter 12 Introducing the SMT .............................................................................................................12-1
12.1 SMT Introduction.....................................................................................................................12-1
12.1.1 Procedure for SMT Configuration via Telnet...................................................................12-1
12.1.2 Prestige SMT Menu Overview.........................................................................................12-1
12.2 Navigating the SMT Interface..................................................................................................12-3
12.2.1 System Management Terminal Interface Summary .........................................................12-4
12.3 Changing the System Password ...............................................................................................12-5
Chapter 13 General Setup .........................................................................................................................13-1
13.1 General Setup...........................................................................................................................13-1
13.2 Configuring Menu 1.................................................................................................................13-1
13.2.1 Configuring Dynamic DNS..............................................................................................13-3
Chapter 14 LAN Setup ..............................................................................................................................14-1
14.1 LAN Setup ...............................................................................................................................14-1
14.1.1 LAN Port Filter Setup ......................................................................................................14-1
14.2 Protocol Dependent Ethernet Setup .........................................................................................14-2
14.3 TCP/IP Ethernet Setup and DHCP...........................................................................................14-2
Chapter 15 Internet Access .......................................................................................................................15-1
15.1 Internet Access Overview ........................................................................................................15-1
15.2 IP Policies ................................................................................................................................15-1
15.3 IP Alias.....................................................................................................................................15-1
15.4 IP Alias Setup...........................................................................................................................15-2
15.5 Route IP Setup..........................................................................................................................15-4
15.6 Internet Access Configuration..................................................................................................15-5
Chapter 16 Remote Node Configuration..................................................................................................16-1
16.1 Remote Node Setup Overview.................................................................................................16-1
16.2 Remote Node Setup..................................................................................................................16-1
16.2.1 Remote Node Profile........................................................................................................16-1
16.2.2 Encapsulation and Multiplexing Scenarios ......................................................................16-2
16.2.3 Outgoing Authentication Protocol....................................................................................16-5
16.3 Metric.......................................................................................................................................16-5
16.4 Remote Node Network Layer Options.....................................................................................16-6
16.4.1 My WAN Addr Sample IP Addresses..............................................................................16-9
16.5 Remote Node Filter ..................................................................................................................16-9

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x Table of Contents
16.5.1 Web Configurator Internet Security Filter Rules ...........................................................16-10
16.5.2 Web Configurator Filter Sets .........................................................................................16-11
16.6 Editing ATM Layer Options ..................................................................................................16-13
16.6.1 VC-based Multiplexing (non-PPP Encapsulation).........................................................16-13
16.6.2 LLC-based Multiplexing or PPP Encapsulation ............................................................16-13
Chapter 17 Static Route Setup..................................................................................................................17-1
17.1 IP Static Route Overview.........................................................................................................17-1
17.2 Configuring an IP static route ..................................................................................................17-2
Chapter 18 Bridging Setup .......................................................................................................................18-1
18.1 Bridging Overview...................................................................................................................18-1
18.2 Bridge Ethernet Setup..............................................................................................................18-1
18.2.1 Remote Node Bridging Setup ..........................................................................................18-1
18.2.2 Bridge Static Route Setup ................................................................................................ 18-3
Chapter 19 Network Address Translation (NAT)....................................................................................19-1
19.1 NAT Overview ........................................................................................................................19-1
19.1.1 SUA (Single User Account) Versus NAT .......................................................................19-1
19.2 Applying NAT .........................................................................................................................19-1
19.3 NAT Setup ...............................................................................................................................19-3
19.3.1 Address Mapping Sets .....................................................................................................19-4
19.4 Configuring a Server behind NAT...........................................................................................19-9
19.5 General NAT Examples......................................................................................................... 19-11
19.5.1 Example 1: Internet Access Only...................................................................................19-11
19.5.2 Example 2: Internet Access with an Inside Server.........................................................19-13
19.5.3 Example 3: Multiple Public IP Addresses With Inside Servers .....................................19-14
19.5.4 Example 4: NAT Unfriendly Application Programs......................................................19-17
SMT Advanced Management..................................................................................................................... VII
Chapter 20 Filter Configuration...............................................................................................................20-1
20.1 About Filtering.........................................................................................................................20-1
20.2 Configuring a Filter Set ...........................................................................................................20-4
20.2.1 Filter Rules Summary Menus ..........................................................................................20-6
20.3 Configuring a Filter Rule .........................................................................................................20-7
20.3.1 TCP/IP Filter Rule ...........................................................................................................20-8
20.3.2 Generic Filter Rule.........................................................................................................20-12
20.4 Filter Types and NAT ............................................................................................................20-14
20.5 Example Filter........................................................................................................................20-14
20.6 Applying Filters and Factory Defaults...................................................................................20-17
20.6.1 Ethernet Traffic..............................................................................................................20-18
20.6.2 Remote Node Filters ......................................................................................................20-18
Chapter 21 SNMP Configuration .............................................................................................................21-1
21.1 SNMP Overview......................................................................................................................21-1
21.2 Supported MIBs.......................................................................................................................21-2

Prestige 623R-T ADSL Dual-link Router
Table of Contents xi
21.3 SNMP Configuration ...............................................................................................................21-2
21.4 SNMP Traps.............................................................................................................................21-4
Chapter 22 System Information and Diagnosis.......................................................................................22-1
22.1 System Maintenance Overview................................................................................................22-1
22.2 System Status ...........................................................................................................................22-1
22.3 System Information..................................................................................................................22-3
22.3.1 System Information..........................................................................................................22-3
22.3.2 Console Port Speed ..........................................................................................................22-5
22.4 Log and Trace ..........................................................................................................................22-5
22.4.1 Viewing Error Log ...........................................................................................................22-5
22.4.2 Syslog and Accounting.....................................................................................................22-6
22.5 Diagnostic ................................................................................................................................22-8
Chapter 23 Firmware and Configuration File Maintenance..................................................................23-1
23.1 Filename Conventions..............................................................................................................23-1
23.2 Backup Configuration ..............................................................................................................23-2
23.2.1 Backup Configuration ......................................................................................................23-3
23.2.2 Using the FTP Command from the Command Line.........................................................23-3
23.2.3 Example of FTP Commands from the Command Line....................................................23-3
23.2.4 GUI-based FTP Clients ....................................................................................................23-4
23.2.5 TFTP and FTP over WAN Will Not Work When............................................................23-4
23.2.6 Backup Configuration Using TFTP .................................................................................23-5
23.2.7 TFTP Command Example................................................................................................23-5
23.2.8 GUI-based TFTP Clients..................................................................................................23-5
23.3 Restore Configuration ..............................................................................................................23-6
23.3.1 Restore Using FTP ...........................................................................................................23-6
23.3.2 Restore Using FTP Session Example...............................................................................23-8
23.4 Uploading Firmware and Configuration Files..........................................................................23-8
23.4.1 Firmware File Upload ......................................................................................................23-8
23.4.2 Configuration File Upload ...............................................................................................23-9
23.4.3 FTP File Upload Command from the DOS Prompt Example ..........................................23-9
23.4.4 FTP Session Example of Firmware File Upload............................................................23-10
23.4.5 TFTP File Upload ..........................................................................................................23-10
23.4.6 TFTP Upload Command Example .................................................................................23-11
Chapter 24 System Maintenance ..............................................................................................................24-1
24.1 Command Interpreter Mode Overview ....................................................................................24-1
24.2 Call Control Support ................................................................................................................24-2
24.2.1 Budget Management ........................................................................................................24-2
24.3 Time and Date Setting..............................................................................................................24-3
24.3.1 Resetting the Time ...........................................................................................................24-5
Chapter 25 Remote Management .............................................................................................................25-1
25.1 Remote Management Overview...............................................................................................25-1

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xii Table of Contents
25.2 Configuring Remote Management...........................................................................................25-1
25.2.1 Remote Management Setup .............................................................................................25-1
25.2.2 Remote Management Limitations....................................................................................25-2
25.3 Remote Management and NAT ...............................................................................................25-3
25.4 System Timeout .......................................................................................................................25-3
Chapter 26 IP Policy Routing ...................................................................................................................26-1
26.1 IP Policy Routing Overview ....................................................................................................26-1
26.2 Benefits of IP Policy Routing ..................................................................................................26-1
26.3 Routing Policy .........................................................................................................................26-1
26.4 IP Routing Policy Setup...........................................................................................................26-2
26.5 Applying an IP Policy..............................................................................................................26-5
26.5.1 Ethernet IP Policies..........................................................................................................26-5
26.6 IP Policy Routing Example......................................................................................................26-7
Chapter 27 Call Scheduling ......................................................................................................................27-1
27.1 Call Scheduling Overview .......................................................................................................27-1
Appendices and Index ...............................................................................................................................VIII
Appendix A Troubleshooting...................................................................................................................... A-1
A.1 Using LEDs to Diagnose Problems .......................................................................................... A-1
A.1.1 Power LED .......................................................................................................................A-1
A.1.2 LAN LED .........................................................................................................................A-1
A.1.3 DSL LED ..........................................................................................................................A-2
A.2 Telnet ........................................................................................................................................A-2
A.3 Web Configurator .....................................................................................................................A-3
A.4 Login Username and Password................................................................................................. A-3
A.5 LAN Interface ........................................................................................................................... A-4
A.6 WAN Interface.......................................................................................................................... A-4
A.7 Internet Access.......................................................................................................................... A-5
A.8 Remote Node Connection ......................................................................................................... A-6
Appendix B IP Subnetting.......................................................................................................................... B-1
Appendix C PPPoE..................................................................................................................................... C-1
Appendix D Setting up Your Computer’s IP Address.............................................................................. D-1
Appendix E Virtual Circuit Topology ....................................................................................................... E-1
Appendix F Splitters and Microfilters ...................................................................................................... F-1
Appendix G Power Adaptor Specifications...............................................................................................G-1
Appendix H Index.......................................................................................................................................H-1

Prestige 623R-T ADSL Dual-link Router
List of Figures xiii
List of Figures
Figure 1-1 Internet Access Application.......................................................................................................... 1-4
Figure 1-2 LAN-to-LAN Application ............................................................................................................ 1-4
Figure 2-1 Password Screen........................................................................................................................... 2-1
Figure 2-2 Web Configurator SITE MAP Screen........................................................................................... 2-2
Figure 2-3 Password....................................................................................................................................... 2-3
Figure 3-1 Wizard Screen 1............................................................................................................................ 3-3
Figure 3-2 Internet Connection with PPPoA.................................................................................................. 3-7
Figure 3-3 Internet Connection with RFC 1483............................................................................................. 3-9
Figure 3-4 Internet Connection with ENET ENCAP ................................................................................... 3-10
Figure 3-5 Internet Connection with PPPoE .................................................................................................3-11
Figure 3-6 Wizard Screen 3.......................................................................................................................... 3-13
Figure 3-7 Wizard : LAN Configuration...................................................................................................... 3-14
Figure 3-8 Wizard Screen 4.......................................................................................................................... 3-15
Figure 4-1 LAN and WAN IP Addresses ....................................................................................................... 4-1
Figure 4-2 LAN.............................................................................................................................................. 4-4
Figure 5-1 Example of Traffic Shaping.......................................................................................................... 5-2
Figure 5-3 WAN Setup..................................................................................................................................... 5-3
Figure 6-1 How NAT Works .......................................................................................................................... 6-2
Figure 6-2 NAT Application With IP Alias .................................................................................................... 6-3
Figure 6-3 Multiple Servers Behind NAT Example ....................................................................................... 6-7
Figure 6-4 NAT Mode.................................................................................................................................... 6-7
Figure 6-5 Edit SUA/NAT Server Set............................................................................................................ 6-9
Figure 6-6 Address Mapping Rules...............................................................................................................6-11
Figure 6-7 Address Mapping Rule Edit........................................................................................................ 6-12
Figure 7-1 DDNS........................................................................................................................................... 7-2
Figure 8-1 Time and Date .............................................................................................................................. 8-1
Figure 9-1 Telnet Configuration on a TCP/IP Network ................................................................................. 9-2
Figure 9-2 Remote Management.................................................................................................................... 9-3
Figure 10-1 Configuring UPnP .................................................................................................................... 10-2
Figure 11-1 System Status.............................................................................................................................11-2
Figure 11-2 System Status: Show Statistics ..................................................................................................11-4
Figure 11-3 DHCP Table...............................................................................................................................11-6
Figure 11-4 Diagnostic..................................................................................................................................11-7
Figure 11-5 Diagnostic General ....................................................................................................................11-8
Figure 11-6 Diagnostic DSL Line .................................................................................................................11-9
Figure 11-7 Firmware Upgrade...................................................................................................................11-11
Figure 11-8 Network Temporarily Disconnected........................................................................................11-12
Figure 11-9 Error Message..........................................................................................................................11-12
Figure 12-1 Login Screen ............................................................................................................................ 12-1

Prestige 623R-T ADSL Dual-link Router
xiv List of Figures
Figure 12-2 Prestige 623R-T SMT Menu Overview ....................................................................................12-2
Figure 12-3 SMT Main Menu.......................................................................................................................12-4
Figure 12-4 Menu 23 System Password .......................................................................................................12-5
Figure 13-1 Menu 1 General Setup...............................................................................................................13-2
Figure 13-2 Menu 1.1 Configure Dynamic DNS..........................................................................................13-3
Figure 14-1 Menu 3 Ethernet Setup..............................................................................................................14-1
Figure 14-2 Menu 3.1 LAN Port Filter Setup...............................................................................................14-1
Figure 14-3 Menu 3.2 TCP/IP and DHCP Ethernet Setup ............................................................................14-2
Figure 15-1 Physical Network ......................................................................................................................15-2
Figure 15-2 Partitioned Logical Networks....................................................................................................15-2
Figure 15-3 Menu 3.2 TCP/IP and DHCP Setup ..........................................................................................15-3
Figure 15-4 Menu 3.2.1 IP Alias Setup.........................................................................................................15-3
Figure 15-5 Menu 1 General Setup...............................................................................................................15-4
Figure 15-6 Menu 4 Internet Access Setup...................................................................................................15-5
Figure 16-1 Menu 11 Remote Node Setup ...................................................................................................16-2
Figure 16-2 Menu 11.1 Remote Node Profile...............................................................................................16-3
Figure 16-3 Menu 11.3 Remote Node Network Layer Options....................................................................16-7
Figure 16-4 Sample IP Addresses for a TCP/IP LAN-to-LAN Connection..................................................16-9
Figure 16-5 Menu 11.5 Remote Node Filter (RFC 1483 or ENET Encapsulation) ....................................16-10
Figure 16-6 Menu 11.5 Remote Node Filter (PPPoA or PPPoE Encapsulation) ........................................16-10
Figure 16-7 Internet Security......................................................................................................................16-11
Figure 16-8 Menu 21- Filer Set Configuration ...........................................................................................16-12
Figure 16-9 Menu 21.11- WebSet 11 ..........................................................................................................16-12
Figure 16-10 Menu 21.12- WebSet 12........................................................................................................16-12
Figure 16-11 Menu 11.6 for VC-based Multiplexing .................................................................................16-13
Figure 16-12 Menu 11.6 for LLC-based Multiplexing or PPP Encapsulation ............................................16-14
Figure 17-1 Sample Static Routing Topology...............................................................................................17-1
Figure 17-2 Menu 12 Static Route Setup......................................................................................................17-2
Figure 17-3 Menu 12.1 IP Static Route Setup ..............................................................................................17-2
Figure 17-4 Menu12.1.1 Edit IP Static Route...............................................................................................17-3
Figure 18-1 Menu 11.1 Remote Node Profile...............................................................................................18-2
Figure 18-2 Menu 11.3 Remote Node Network Layer Options....................................................................18-2
Figure 18-3 Menu 12.3.1 Edit Bridge Static Route ......................................................................................18-3
Figure 19-1 Menu 4 Applying NAT for Internet Access...............................................................................19-2
Figure 19-2 Menu 11.3 Applying NAT to the Remote Node ........................................................................19-3
Figure 19-3 Menu 15 NAT Setup..................................................................................................................19-4
Figure 19-4 Menu 15.1 Address Mapping Sets.............................................................................................19-4
Figure 19-5 Menu 15.1.255 SUA Address Mapping Rules ..........................................................................19-5
Figure 19-6 Menu 15.1.2 ..............................................................................................................................19-6
Figure 19-7 Menu 15.1.1.1 Editing/Configuring an Individual Rule in a Set...............................................19-8
Figure 19-8 Menu 15.2 NAT Server Setup ...................................................................................................19-9

Prestige 623R-T ADSL Dual-link Router
List of Figures xv
Figure 19-9 Menu 15.2.1 NAT Server Setup.............................................................................................. 19-10
Figure 19-10 Multiple Servers Behind NAT Example ................................................................................19-11
Figure 19-11 NAT Example 1 .................................................................................................................... 19-12
Figure 19-12 Menu 4 Internet Access & NAT Example ............................................................................ 19-12
Figure 19-13 NAT Example 2 .................................................................................................................... 19-13
Figure 19-14 Menu 15.2.1 Specifying an Inside Server............................................................................. 19-13
Figure 19-15 NAT Example 3 .................................................................................................................... 19-14
Figure 19-16 Example 3: Menu 11.3.......................................................................................................... 19-15
Figure 19-17 Example 3: Menu 15.1.1.1 ................................................................................................... 19-16
Figure 19-18 Example 3: Final Menu 15.1.1 ............................................................................................. 19-16
Figure 19-19 NAT Example 4 .................................................................................................................... 19-17
Figure 19-20 Example 4: Menu 15.1.1.1 Address Mapping Rule.............................................................. 19-18
Figure 19-21 Example 4: Menu 15.1.1 Address Mapping Rules ............................................................... 19-18
Figure 20-1 Outgoing Packet Filtering Process ........................................................................................... 20-2
Figure 20-2 Filter Rule Process.................................................................................................................... 20-3
Figure 20-3 Menu 21 Filter Set Configuration............................................................................................. 20-4
Figure 20-4 NetBIOS_WAN Filter Rules Summary ....................................................................................20-5
Figure 20-5 NetBIOS_LAN Filter Rules Summary..................................................................................... 20-5
Figure 20-6 TELNET_WAN Filter Rules Summary.................................................................................... 20-5
Figure 20-7 PPPoE Filter Rules Summary................................................................................................... 20-6
Figure 20-8 FTP_WAN Filter Rules Summary............................................................................................ 20-6
Figure 20-9 Menu 21.x.1 TCP/IP Filter Rule............................................................................................... 20-8
Figure 20-10 Executing an IP Filter ............................................................................................................20-11
Figure 20-11 Menu 21.6.1 Generic Filter Rule ......................................................................................... 20-12
Figure 20-12 Protocol and Device Filter Sets ............................................................................................ 20-14
Figure 20-13 Sample Telnet Filter.............................................................................................................. 20-15
Figure 20-14 Menu 21.3.1 Sample Filter ................................................................................................... 20-16
Figure 20-15 Menu 21.3 Sample Filter Rules Summary............................................................................ 20-17
Figure 20-16 Filtering Ethernet Traffic...................................................................................................... 20-18
Figure 20-17 Filtering Remote Node Traffic ............................................................................................. 20-19
Figure 21-1 SNMP Management Model ...................................................................................................... 21-1
Figure 21-2 Menu 22 SNMP Configuration................................................................................................. 21-3
Figure 22-1 Menu 24 System Maintenance ................................................................................................. 22-1
Figure 22-2 Menu 24.1 System Maintenance : Status.................................................................................. 22-2
Figure 22-3 Menu 24.2 System Information and Console Port Speed......................................................... 22-3
Figure 22-4 Menu 24.2.1 System Maintenance : Information ..................................................................... 22-4
Figure 22-5 Menu 24.2.2 System Maintenance : Change Console Port Speed............................................ 22-5
Figure 22-6 Menu 24.3 System Maintenance : Log and Trace .................................................................... 22-5
Figure 22-7 Sample Error and Information Messages ................................................................................. 22-6
Figure 22-8 Menu 24.3.2 System Maintenance : UNIX Syslog................................................................... 22-6
Figure 22-9 Menu 24.4 System Maintenance : Diagnostic .......................................................................... 22-9

Prestige 623R-T ADSL Dual-link Router
xvi List of Figures
Figure 23-1 Telnet in Menu 24.5 ..................................................................................................................23-3
Figure 23-2 FTP Session Example................................................................................................................23-4
Figure 23-3 Telnet into Menu 24.6 ...............................................................................................................23-7
Figure 23-4 Restore Using FTP Session Example ........................................................................................23-8
Figure 23-5 Telnet Into Menu 24.7.1 Upload System Firmware ..................................................................23-9
Figure 23-6 Telnet Into Menu 24.7.2 System Maintenance..........................................................................23-9
Figure 23-7 FTP Session Example of Firmware File Upload .....................................................................23-10
Figure 24-1 Command Mode in Menu 24 ....................................................................................................24-1
Figure 24-2 Valid Commands .......................................................................................................................24-1
Figure 24-3 Menu 24.9 System Maintenance : Call Control ........................................................................24-2
Figure 24-4 Menu 24.9.1 Budget Management ............................................................................................24-2
Figure 24-5 Menu 24 System Maintenance ..................................................................................................24-4
Figure 24-6 Menu 24.10 System Maintenance: Time and Date Setting .......................................................24-4
Figure 25-1 Menu 24.11 Remote Management Control ...............................................................................25-2
Figure 26-1 Menu 25 IP Routing Policy Setup.............................................................................................26-2
Figure 26-2 Menu 25.1 IP Routing Policy Setup..........................................................................................26-3
Figure 26-3 Menu 25.1.1 IP Routing Policy .................................................................................................26-4
Figure 26-4 Menu 3.2 TCP/IP and DHCP Ethernet Setup ............................................................................26-6
Figure 26-5 Menu 11.3 Remote Node Network Layer Options....................................................................26-6
Figure 26-6 Example of IP Policy Routing...................................................................................................26-7
Figure 26-7 IP Routing Policy Example .......................................................................................................26-8
Figure 26-8 IP Routing Policy Example .......................................................................................................26-9
Figure 26-9 Applying IP Policies Example...................................................................................................26-9
Figure 27-1 Menu 26 Schedule Setup...........................................................................................................27-1
Figure 27-2 Menu 26.1 Schedule Set Setup..................................................................................................27-2
Figure 27-3 Applying Schedule Set(s) to a Remote Node (PPPoE)..............................................................27-4

Prestige 623R-T ADSL Dual-link Router
List of Tables xvii
List of Tables
Table 2-1 Password ........................................................................................................................................ 2-3
Table 3-1 Wizard Screen 1 ............................................................................................................................. 3-3
Table 3-2 Internet Connection with PPPoA ................................................................................................... 3-7
Table 3-3 Internet Connection with RFC 1483 .............................................................................................. 3-9
Table 3-4 Internet Connection with ENET ENCAP..................................................................................... 3-10
Table 3-5 Internet Connection with PPPoE.................................................................................................. 3-12
Table 3-6 Wizard : LAN Configuration ....................................................................................................... 3-14
Table 4-1 LAN ............................................................................................................................................... 4-4
Table 5-2 WAN Setup ...................................................................................................................................... 5-4
Table 6-1 NAT Definitions............................................................................................................................. 6-1
Table 6-2 NAT Mapping Types ...................................................................................................................... 6-4
Table 6-3 Services and Port Numbers ............................................................................................................ 6-6
Table 6-4 NAT Mode ..................................................................................................................................... 6-8
Table 6-5 Edit SUA/NAT Server Set.............................................................................................................. 6-9
Table 6-6 Address Mapping Rules ................................................................................................................6-11
Table 6-7 Address Mapping Rule Edit ......................................................................................................... 6-13
Table 7-1 DDNS............................................................................................................................................. 7-2
Table 8-1 Time and Date ................................................................................................................................ 8-2
Table 9-1 Remote Management ..................................................................................................................... 9-3
Table 10-1 Configuring UPnP...................................................................................................................... 10-2
Table 11-1 System Status ..............................................................................................................................11-3
Table 11-2 System Status: Show Statistics....................................................................................................11-5
Table 11-3 DHCP Table ................................................................................................................................11-6
Table 11-4 Diagnostic General......................................................................................................................11-8
Table 11-5 Diagnostic DSL Line.................................................................................................................11-10
Table 11-6 Firmware Upgrade ....................................................................................................................11-11
Table 12-1 Main Menu Commands.............................................................................................................. 12-3
Table 12-2 Main Menu Summary ................................................................................................................ 12-4
Table 13-1 Menu 1 General Setup................................................................................................................ 13-2
Table 13-2 Menu 1.1 Configure Dynamic DNS........................................................................................... 13-3
Table 14-1 DHCP Ethernet Setup Menu Fields............................................................................................ 14-2
Table 14-2 TCP/IP Ethernet Setup Menu Fields .......................................................................................... 14-3
Table 15-1 Menu 3.2.1 IP Alias Setup.......................................................................................................... 15-4
Table 15-2 Menu 4 Internet Access Setup.................................................................................................... 15-5
Table 16-1 Menu 11.1 Remote Node Profile................................................................................................ 16-3
Table 16-2 Menu 11.3 Remote Node Network Layer Options..................................................................... 16-7
Table 17-1 Menu12.1.1 Edit IP Static Route................................................................................................ 17-3
Table 18-1 Menu 11.3 Remote Node Network Layer Options : Bridge Fields ............................................ 18-3
Table 18-2 Menu 12.3.1 Edit Bridge Static Route ....................................................................................... 18-3

Prestige 623R-T ADSL Dual-link Router
xviii List of Tables
Table 19-1 Applying NAT in Menus 4 & 11.3 ..............................................................................................19-3
Table 19-2 SUA Address Mapping Rules .....................................................................................................19-5
Table 19-3 Menu 15.1.2................................................................................................................................19-7
Table 19-4 Menu 15.1.1.1 Editing/Configuring an Individual Rule in a Set ................................................19-8
Table 20-1 Abbreviations Used in the Filter Rules Summary Menu ............................................................20-6
Table 20-2 Rule Abbreviations Used ............................................................................................................20-7
Table 20-3 Menu 21.x.1 TCP/IP Filter Rule .................................................................................................20-9
Table 20-4 Menu 21.6.1 Generic Filter Rule ..............................................................................................20-13
Table 20-5 Filter Sets Table ........................................................................................................................20-18
Table 21-1 Menu 22 SNMP Configuration...................................................................................................21-3
Table 21-2 SNMP Traps................................................................................................................................21-4
Table 21-3 Ports and Interface Types............................................................................................................21-4
Table 22-1 Menu 24.1 System Maintenance : Status....................................................................................22-2
Table 22-2 Menu 24.2.1 System Maintenance : Information........................................................................22-4
Table 22-3 Menu 24.3.2 System Maintenance : UNIX Syslog.....................................................................22-6
Table 22-4 Menu 24.4 System Maintenance Menu : Diagnostic ..................................................................22-9
Table 23-1 Filename Conventions ................................................................................................................23-2
Table 23-2 General Commands for GUI-based FTP Clients ........................................................................23-4
Table 23-3 General Commands for GUI-based TFTP Clients ......................................................................23-6
Table 24-1 Menu 24.9.1 Budget Management..............................................................................................24-3
Table 24-2 Menu 24.10 System Maintenance: Time and Date Setting .........................................................24-5
Table 25-1 Menu 24.11 Remote Management Control.................................................................................25-2
Table 26-1 Menu 25.1 IP Routing Policy Setup............................................................................................26-3
Table 26-2 Menu 25.1.1 IP Routing Policy...................................................................................................26-4
Table 27-1 Menu 26.1 Schedule Set Setup ...................................................................................................27-2

Prestige 623R-T ADSL Dual-link Router
List of Tables xix
List of Charts
Chart A-1 Troubleshooting Power LED.........................................................................................................A-1
Chart A-2 Troubleshooting LAN LED...........................................................................................................A-1
Chart A-3 Troubleshooting DSL LED............................................................................................................A-2
Chart A-4 Troubleshooting Telnet..................................................................................................................A-2
Chart A-5 Troubleshooting Web Configurator ...............................................................................................A-3
Chart A-6 Troubleshooting Internet Browser Display ...................................................................................A-3
Chart A-7 Troubleshooting Login Username and Password ..........................................................................A-3
Chart A-8 Troubleshooting LAN Interface ....................................................................................................A-4
Chart A-9 Troubleshooting ADSL Connection ..............................................................................................A-4
Chart A-10 Troubleshooting WAN Interface..................................................................................................A-5
Chart A-11 Troubleshooting Internet Access .................................................................................................A-5
Chart A-12 Troubleshooting Internet Connection ..........................................................................................A-5
Chart A-13 Troubleshooting Connecting to a Remote Node or ISP...............................................................A-6
Chart B-1 Classes of IP Addresses.................................................................................................................B-1
Chart B-2 Allowed IP Address Range By Class.............................................................................................B-2
Chart B-3 “Natural” Masks............................................................................................................................B-2
Chart B-4 Alternative Subnet Mask Notation ................................................................................................B-3
Chart B-5 Subnet 1.........................................................................................................................................B-4
Chart B-6 Subnet 2.........................................................................................................................................B-4
Chart B-7 Subnet 1.........................................................................................................................................B-5
Chart B-8 Subnet 2.........................................................................................................................................B-5
Chart B-9 Subnet 3.........................................................................................................................................B-5
Chart B-10 Subnet 4.......................................................................................................................................B-6
Chart B-11 Eight Subnets...............................................................................................................................B-6
Chart B-12 Class C Subnet Planning .............................................................................................................B-7
Chart B-13 Class B Subnet Planning .............................................................................................................B-7

Prestige 623R-T ADSL Dual-link Router
xx Preface
Preface
Congratulations on your purchase from the Prestige 623R-T ADSL Dual-link Router.
Your Prestige is easy to install and configure. Use the web configurator, System Management Terminal
(SMT) or command interpreter interface to configure your Prestige. Not all features can be configured
through all interfaces.
Don’t forget to register your Prestige online for free future product updates and
information at www.zyxel.com for global products, or at www.us.zyxel.com for
North American products.
About This User's Guide
This manual is designed to guide you through the configuration of your Prestige for its various applications.
The web configurator parts of this guide contain background information on features configurable by web
configurator. The SMT parts of this guide contain background information solely on features not
configurable by web configurator.
Related Documentation
 Supporting Disk
Refer to the included CD for support documents.
 Quick Start Guide
The Quick Start Guide is designed to help you get up and running right away. It contains
connection information and instructions on getting started.
 Web Configurator Online Help
Embedded web help for descriptions of individual screens and supplementary information.
 ZyXEL Glossary and Web Site
Please refer to www.zyxel.com for an online glossary of networking terms and additional support
documentation.
Syntax Conventions
• “Enter” means for you to type one or more characters. “Select” or “Choose” means for you to use one
predefined choices.
• The SMT menu titles and labels are in Bold Times New Roman font. Predefined field choices are in
Bold Arial font. Command and arrow keys are enclosed in square brackets. [ENTER] means the
Enter, or carriage return key; [ESC] means the Escape key and [SPACE BAR] means the Space Bar.