XAVi X8821e User manual

I
User Manual
X8821e/X8821m
X8824e/X8824m
Broadband Gateway
ADSL/ ADSL2+ Bridge/Router
With one Ethernet port
or one Ethernet port plus
one USB 1.1 device port
Issue 1.0
11st Jan. 2007

X8821e/X8821m / X8824e/X8824m User’s Guide
II
XAVi Technologies Corporation
Tel: [phone]
9F, No. 129, Hsing Te Road, Sanchung City,
Taipei County 241,
Taiwan
Copyright © 2007, XAVi Technologies Corporation
Information in this manual is subject to change without notice. No part of this manual may be reproduced
or transmitted in any form or by any means, electronic or mechanical, including photocopying or scanning,
for any purpose, without the written permission of XAVi Technologies Corporation.
XAVi Technologies Corporation provides this documentation without warranty of any kind, implied or
expressed, including, but not limited to, the implied warranties of merchantability and fitness for a
particular purpose.

X8821e/X8821m / X8824e/X8824m User’s Guide
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T
Ta ab bl le e o of f C Co on nt te en nt ts s
1Introduction.................................................................................................1
Features................................................................................................................................1
Device Requirements...........................................................................................................2
Using this Document.............................................................................................................2
Notational conventions..................................................................................................................2
Typographical conventions............................................................................................................2
Special messages.......................................................................................................................... 2
2Getting to know the device........................................................................3
Parts Check...........................................................................................................................3
X8821e/X8821m Front Panel...............................................................................................4
X8821e/X8821m Rear Panel ...............................................................................................5
X8824e/X8824m Front Panel...............................................................................................6
X8824e/X8824m Rear Panel ...............................................................................................7
3Connecting your device.............................................................................8
Connecting the Hardware.....................................................................................................8
Step 1. Connect the DSL cable..................................................................................................... 9
Step 2. Connect the Ethernet cable ..............................................................................................9
Step 3. Attach the power connector..............................................................................................9
Step 4. Configure your Ethernet PCs............................................................................................9
Step 5. Install an USB driver (for X8824e/X8824m only)..............................................................9
Next step........................................................................................................................................9
4Getting Started with the Web pages.......................................................10
Accessing the Web pages..................................................................................................10
Commonly used buttons.....................................................................................................12
Help information..................................................................................................................12
Testing your Setup..............................................................................................................13
Default device settings........................................................................................................14
5Home..........................................................................................................15
Overview Page....................................................................................................................15
Basic Overview............................................................................................................................15
Firmware Upgrade..............................................................................................................16
Upgrading the firmware...............................................................................................................16
6Configuration............................................................................................17
Quick Setup.........................................................................................................................17
Configuring ATM PVC.................................................................................................................18
Configuring the Connection Type................................................................................................18
Configuring the WAN IP Settings if PPP over ATM (PPPoA) or PPP over Ethernet (PPPoE)..18

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Configuring the WAN IP Settings if RFC1483 (Routed) .............................................................22
Configuring the WAN IP Settings if Bridging...............................................................................23
Local Network (LAN) Page.................................................................................................24
IP Address ...................................................................................................................................24
DHCP server................................................................................................................................25
Internet Connection Page...................................................................................................27
Connections.................................................................................................................................27
ADSL Configuration.....................................................................................................................28
MAC Spoofing..............................................................................................................................29
Security Configuration ........................................................................................................30
IP Filter.........................................................................................................................................30
Domain Filter................................................................................................................................32
Advanced Security Configuration.......................................................................................33
DMZ Host..................................................................................................................................... 33
Port Forwarding...........................................................................................................................34
IP Routing............................................................................................................................36
Static Routing...............................................................................................................................36
Dynamic Routing ......................................................................................................................... 37
DNS Client ..........................................................................................................................38
IGMP Proxy.........................................................................................................................38
DNS Relay ..........................................................................................................................39
SNTP...................................................................................................................................40
SNTP Server................................................................................................................................40
SNTP client..................................................................................................................................41
Quality of Service................................................................................................................42
7System.......................................................................................................44
Admin Password.................................................................................................................44
Reset & Restart...................................................................................................................45
Backup Configuration.........................................................................................................46
Remote Access...................................................................................................................48
8Status.........................................................................................................49
Broadband Line...................................................................................................................49
Internet Connection ............................................................................................................50
Traffic Status.......................................................................................................................50
DHCP Table........................................................................................................................51
Routing Table......................................................................................................................51
ARP Table...........................................................................................................................52
AAppendix A - Configuring the Internet Settings....................................53
Configuring Ethernet PCs...................................................................................................53
Before you begin..........................................................................................................................53
Windows® XP PCs...................................................................................................................... 53
Windows 2000 PCs.....................................................................................................................53

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Windows Me PCs........................................................................................................................54
Windows 95, 98 PCs...................................................................................................................54
Windows NT 4.0 workstations.....................................................................................................55
Assigning static Internet information to your PCs .......................................................................56
Configuring USB PC...........................................................................................................57
Connecting a computer to the USB port .....................................................................................57
Part 1. Installing the USB Driver..................................................................................................57
Part 2. Configuring IP properties on the USB PC.......................................................................58
BAppendix B - IP Addresses, Network Masks, and Subnets.................59
IP Addresses.......................................................................................................................59
Structure of an IP address...........................................................................................................59
Network classes...........................................................................................................................59
Subnet masks.....................................................................................................................60
CAppendix C - Troubleshooting................................................................61
Troubleshooting Suggestions.............................................................................................61
Diagnosing Problem using IP Utilities................................................................................63
Ping..............................................................................................................................................63
nslookup....................................................................................................................................... 63
DAppendix D - Advanced DSL port attributes.........................................65
EAppendix E - Glossary.............................................................................70
FAppendix F - Specification ......................................................................79
GAppendix G - Warranties..........................................................................81
HAppendix H - Regulation..........................................................................83
IAppendix I - Contact information............................................................86

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1 Introduction
Congratulations on becoming the owner of the X8821e/X8821m or X8824e/X8824m,
ADSL router. You will now be able to access the Internet using your high-speed DSL
connection.
This User Guide will show you how to connect your X8821e/X8821m/X8824e/X8824m
DSL Modem, and how to customize its configuration to get the most out of your new
product.
These four models are covered by this user manual:
X8821e/X8821m: ADSL2+ and 1 Ethernet port .
X8824e/X8824m: ADSL2+, 1 Ethernet port and 1 USB port.
X8821m and X8824m support additional features for remote management.
Features
The list below contains the main features of the device and may be useful to users with
knowledge of networking protocols. If you are not an experienced user, the chapters
throughout this guide will provide you with enough information to get the most out of your
device.
The features include:
• High Speed Asymmetrical Data Transmission on Twisted Copper Pair Wire
• Service providers can deploy ADSL rapidly over existing wire infrastructure
(POTS or ISDN line)
• Compatible and interoperable with most central office site ADSL DSLAM or
Multi-service Access Systems.
• RFC 1483 Bridge and Routing over ATM over ADSL
• PPPoE and PPPoA Routing over ADSL
• Interchangeable between Bridge and Router mode
• Network address translation (NAT) functions to provide security for your LAN
• Network configuration through DHCP Server and DHCP Client
• Services including IP route and DNS configuration, RIP, and IP and DSL
performance monitoring
• Support IP QoS for multiple services and bandwidth sensitive applications
• Configuration and management with Telnet through the Ethernet interface, and
remote Telnet through ADSL interface
• Firmware upgradeable through TFTP, HTTP
• User-friendly configuration program accessed via a web browser

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Device Requirements
In order to use the X8821e/X8821m or X8824e/X8824m, you must have the following:
• DSL service up and running on your telephone line
• Instructions from your ISP on what type of Internet access you will be using, and
the addresses needed to set up access
• One or more computers, each containing an Ethernet card (10Base-T/100Base-
T network interface card (NIC)).
• For system configuration using the supplied web-based program: a web browser
such as Internet Explorer v4 or later, or Netscape v4 or later. Note that version 4
of each browser is the minimum version requirement – for optimum display
quality, use Internet Explorer v5, or Netscape v6.1
Note
You do need to use a hub or switch in order to connect more than one
Ethernet PC to the DSL device. You may also use the USB port of DSL
device connecting to the PC (X8824e/X8824m only).
Using this Document
Notational conventions
• Acronyms are defined the first time they appear in the text and also in the
glossary.
• For brevity, the X8821e/X8824m/X8824e/X8824m is referred to as “the device”.
• The term LAN refers to a group of Ethernet-connected computers at one site.
Typographical conventions
• Italic text is used for items you select from menus and drop-down lists and the
names of displayed web pages.
• Bold text is used for text strings that you type when prompted by the program,
and to emphasize important points.
Special messages
This document uses the following icons to draw your attention to specific instructions or
explanations.
Note Provides clarifying or non-essential information on the current topic.
Definition
Explains terms or acronyms that may be unfamiliar to many readers.
These terms are also included in the Glossary.
WARNING
Provides messages of high importance, including messages relating to
personal safety or system integrity.

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2 Getting to know the device
Parts Check
In addition to this document, your package should arrive containing the following:
• X8821e/X8821m or X8824e/X8824m DSL Modem
• Standard phone/DSL line cable
• Ethernet cable
• USB cable (for X8824e/X8824m only)
• Power adapter
• User Manual CD
Figure 1: DSL Modem Package Contents
X8821e or X8821m or
X8824e or X8824m
ADSL device unit
RJ-11 Cable
RJ-45 Cable
USB cable (X8824e/X8824m only)
Power adapter
User’s Manual CD

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X8821e/X8821m Front Panel
The front panel contains lights called Light Emitting Diodes (LEDs) that indicate the
status of the unit.
Figure 2: X8821e/X8821m Front Panel and LEDs
Label Color Function
PWR
(power) green On: device is powered on
Off: device is powered off
WAN green
On: DSL link reaches showtime, which means
that your device has successfully connected
to your ISP’s DSL network.
Off: DSL link not in showtime, your device has
not successfully connected to your ISP’s DSL
network.
Blink: Try to connect to ISP’s DSL network
PPP green On: PPP SYNC UP
Off: NO PPP link
Blink: Valid IP packet being transmitted
LAN green On: LAN link established and active
Off: No LAN link
Blink: Data being transmitted
ALM red On: Error occurred
Blink: booting up

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X8821e/X8821m Rear Panel
The X8821e/X8821m rear panel contains the ports for the unit's data and power
connections.
Figure 3: X8821e/X8821m Rear Panel
Label Function
WAN Connects to the ISP DSL network Connects to the
supplied power adapter
RESET A reset button to reset the device or reset to default
settings
ETHERNET Connects the device via Ethernet to your devices (PC
or switch) in LAN
POWER Connects to the supplied power adapter

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X8824e/X8824m Front Panel
The front panel contains lights called Light Emitting Diodes (LEDs) that indicate the
status of the unit.
Figure 4: X8824e/X8824m Front Panel and LEDs
Label Color Function
Power green
On: device is powered on
Off: device is powered off
WAN green
On: DSL link reaches showtime, which means
that your device has successfully connected
to your ISP’s DSL network.
Off: DSL link not in showtime, your device has
not successfully connected to your ISP’s DSL
network.
Blink: Try to connect to ISP’s DSL network
PPP green On: PPP SYNC UP
Off: NO PPP link
Blink: Valid IP packet being transmitted
LAN green On: LAN link established and active
Off: No LAN link
Blink: Data being transmitted
USB green On: USB link established and active
Off: No LAN link
Blink: Data being transmitted

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X8824e/X8824m Rear Panel
The X8824e/X8824m rear panel contains the ports for the unit's data and power
connections.
Figure 5: X8824e/X8824m Rear Panel
Label Function
WAN Connects to the ISP DSL network Connects to the
supplied power adapter
USB Connects to PC
RESET A reset button to reset the device or reset to default
settings
ETHERNET Connects the device via Ethernet to your devices (PC
or switch) in LAN
Power Jack Connects to the supplied power adapter

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3 Connecting your device
This chapter provides basic instructions for connecting the device to a computer or LAN
and to the Internet.
In addition to configuring the device, you need to configure the Internet properties of your
computer(s). For more details, see the following sections in Appendix A:
• Configuring Ethernet PCs section
• Configuring USB PCs section
This chapter assumes that you have already established a DSL service with your Internet
service provider (ISP). These instructions provide a basic configuration that should be
compatible with your home or small office network setup. Refer to the subsequent
chapters for additional configuration instructions.
Connecting the Hardware
This section describes how to connect the device to the power outlet and your
computer(s) or network.
WARNING
Before you begin, turn the power off for all devices. These include
your computer(s), your LAN hub/switch (if applicable), and the device.
The diagram below illustrates the hardware connections. The layout of the ports on your
device may vary from the layout shown. Refer to the steps that follow for specific
instructions.
Figure 6: Overview of Hardware Connections for X8824e/X8824m
ADSL Outlet Power Supply
PCUSB

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Step 1. Connect the DSL cable
Connect the DSL cable to the port labeled DSL on the rear panel of the device. Connect
the other end to ADSL spliter.
Step 2. Connect the Ethernet cable
Connect to computer or to a HUB/Switch directly to the device via Ethernet cable(s).
Step 3. Attach the power connector
Connect the AC power adapter to the Power connector on the back of the device and
plug the adapter into a wall outlet or power strip. Turn on and boot up your computer(s)
and any LAN devices such as hubs or switches.
Step 4. Configure your Ethernet PCs
You must also configure the Internet properties on your Ethernet PCs. See Configuring
Ethernet PCs section.
Step 5. Install an USB driver (for X8824e/X8824m only)
You can attach a single computer to the device using a USB cable. The USB port is
useful if you have an USB-enabled PC that does not have a network interface card for
attaching to your Ethernet network.
Before attaching the USB cable, you must install an USB driver on your PC and
configure the computer. For complete instructions, see Configuring an USB PC section.
Next step
After setting up and configuring the device and PCs, you can log on to the device by
following the instructions in “Getting Started with the Web pages” on chapter 4. The
chapter includes a section called Testing your Setup, which enables you to verify that the
device is working properly.

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4 Getting Started with the Web pages
The DSL Modem includes a series of Web pages that provide an interface to the
software installed on the device. It enables you to configure the device settings to meet
the needs of your network. You can access it through a web browser on a PC connected
to the device.
Accessing the Web pages
To access the web pages, you need the following:
A laptop or PC connected to the LAN or WLAN port on the device.
A web browser installed on the PC. The minimum browser version requirement is
Internet Explorer v4 or Netscape v4. For the best display quality, use latest version of
Internet Explorer, Netscape or Mozilla Firefox from any of the LAN computers, launch
your web browser, type the URL, http://192.168.1.1 in the web address (or location)
box, and press [Enter]. Then enter the default username and password: admin/admin
to access the configuration web page, if you have not changed the username and
password.
The home page opens displaying the overview of device:
Figure 7: Overview –Home

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The Menu comprises:
My DSL Modem (home menu):provides overview of the system and options to
upgrade the firmware of the system. By default, the page Overview is displayed after
the login.
Configuration: provides information about the current configuration of various
system features with options to change the configuration. It includes the sub menus
Quick Setup, Local Network, Internet, Security, Advanced Security, IP Routing, Dns
Client, IGMP Proxy, Dns Relay, SNTP and Quality of Service.
System: provides the administration utilities (sub menus) such as change password,
Reset & Restart, Backup configuration profile, and Remote Access.
Status: provides the current status of the devices. It includes Broadband Line,
Internet Connection, Traffic Stats, DHCP Table, Routing Table, and ARP Table.

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Commonly used buttons
The following buttons are used throughout the web pages:
Button Function
You may need to configure the default settings on
more than one Web page. Click on this button once
you have changed the configuration on your current
page and are ready to move on to the next.
This button appears on every configuration page.
Click on this button if at any time you decide that you
do not want to change the existing settings.
Radio buttons – these appear on many configuration
pages. You will be asked to select one radio button
from the selection of two or more available. You
cannot select more than one radio button at a time.
This button appears on every configuration page.
Click on this button once you are through with the
changes and decide to apply the made changes.
You may need to browse to find a file which needs to
be uploaded for new configuration.
This button allows you to upgrade to the new
configuration file attached using the Browse button.
The following terms are used throughout this guide in association with these buttons:
Click – point the mouse arrow over the button, menu entry or link on the screen and click
the left mouse button. This performs an action, such as displaying a new page or
performing the action specific to the button on which left mouse button is clicked.
Select – usually used when describing which radio button to select from a list, or which
entry to select from a drop-down list. Point the mouse arrow over the entry and left-click
to select it. This does not perform an action – you will also be required to click on a button,
menu entry or link in order to proceed.
Help information
To view the help, click the desired menu or submenu. The related help information
appears in the screen.

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Testing your Setup
Once you have connected your hardware and configured your PCs, any computer on
your LAN should be able to use the device’s DSL connection to access the Internet.
To test the connection, turn on the device, wait for 30 seconds and then verify that the
LEDs are illuminated as follows:
LED Behavior
Power Solid green to indicate that the device is turned on. If
this light is not on, check the power cable
attachment.
LAN Solid green to indicate that the device can
communicate with your LAN.
WAN
(ADSL) Flashing on/off while trying to SYNC UP with ISP CO site. Solid green to indicate that the device has
successfully established a connection with your ISP.
PPP
(Internet) When it turns solid ON that means the device establish a PPP link with ISP.
If the LEDs illuminate as expected, test your Internet connection from a LAN computer.
To do this, open your web browser, and type the URL of any external website (such as
http://www.yahoo.com).
If the LEDs do not illuminate as expected, you may need to configure your Internet
access settings using the information provided by your ISP. If the LEDs still do not
illuminate as expected or the web page is not displayed, see Troubleshooting section or
contact your ISP for assistance.

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Default device settings
In addition to handling the DSL connection to your ISP, the DSL Modem can provide a
variety of services to your network. The device is preconfigured with default settings for
use with a typical home or small office network.
The table below lists some of the most important default settings; these and other
features are described fully in the subsequent chapters. If you are familiar with network
configuration, review these settings to verify that they meet the needs of your network.
Follow the instructions to change them if necessary. If you are unfamiliar with these
settings, try using the device without modification, or contact your ISP for assistance.
WARNING
We strongly recommend that you contact your ISP prior to changing the
default configuration.
Option Default Setting Explanation/Instructions
User/Password admin/admin User name and password to
access the device
DSL Port IP
Address Unnumbered interface:
192.168.1.1
Subnet mask:
255.255.255.255
This is the temporary public IP
address of the WAN port on the
device. It is an unnumbered
interface that is replaced as soon
as your ISP assigns a ‘real’ IP
address. See Quick Setup
section.
LAN Port
IP Address Assigned static IP
address:
192.168.1.1
Subnet mask:
255.255.255.0
This is the IP address of the LAN
port on the device. The LAN port
connects the device to your
Ethernet network. Typically, you
will not need to change this
address. See Local Network
section.
DHCP
(Dynamic Host
Configuration
Protocol)
DHCP server enabled
with the following pool
of addresses:
192.168.1.2
through
192.168.1.21
(Please be noted that
the default DHCP IP
address pool may be
different in each
firmware version.)
The device maintains a pool of
private IP addresses for dynamic
assignment to your LAN
computers. To use this service,
you must have set up your
computers to accept IP
information dynamically, as
described in Local Network ->
DHCP Server section.

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5 Home
The Home web page menu includes the following submenus:
• Overview
• Firmware Upgrade
Overview Page
The overview of the device contains most of the basic information like
System information (equipment vendor, model number, chipset part number, chipset
version number),
Internet information (ADSL port, downstream rate, upstream rate, Gateway, Primary
DNS Server, Secondary DNS server),
Device information (LAN IP address, firmware version, release date, system up time).
Basic Overview
Figure 8: Overview - basic
 Click the Refresh to get the latest information from the device.