XAVI Technologies Corp. X8824r+ User manual

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XAVi Technologies Corporation
X8824rUser’sManual Version1.0
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Tel: [phone]
9F, No. 129, Hsing Te Road, Sanchung City,
Taipei Hsien 241,
Taiwan
Copyright © 2003, 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.

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T
Ta ab bl le e o of f C Co on nt te en nt ts s
C
Ch ha ap pt te er r 1 1 – – G Ge et tt ti in ng g S St ta ar rt te ed d
1. OVERVIEW ......................................................................................... 7
2. FEATURES.......................................................................................... 8
4. APPEARANCE .................................................................................. 10
5. HARDWARE INSTALLATION ............................................................ 12
6. MANAGEMENT................................................................................. 13
7. DEFAULT VALUES ............................................................................ 14
8. SOFTWARE UPGRADE.................................................................... 15
C
Ch ha ap pt te er r 2 2 – – W We eb b I In nt te er rf fa ac ce e M Ma an na ag ge em me en nt t
1. OVERVIEW ....................................................................................... 16
2. PREPARATION ................................................................................. 16
3. LOGIN ............................................................................................... 17
4. HOME................................................................................................ 18
5. LAN ................................................................................................... 20
5.1 LAN CONFIG..................................................................................... 20
5.2 DHCP MODE..................................................................................... 23
5.3 DHCP SERVER................................................................................. 24
5.4 DHCP RELAY .................................................................................... 26
6. WAN .................................................................................................. 27
6.1 DSL.................................................................................................... 27
6.2 ATM VC ............................................................................................. 29
6.3 POINT TO POINT PROTOCOL (PPP)............................................... 31
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6.4 ETHERNET OVER ATM (EOA) ......................................................... 35
6.5 IP OVER ATM (IPOA) ........................................................................ 38
7. BRIDGING......................................................................................... 41
7.1 BRIDGING......................................................................................... 41
8. ROUTING .......................................................................................... 42
8.1 IP ROUTE.......................................................................................... 42
9. SERVICES ........................................................................................ 43
9.1 NAT.................................................................................................... 44
9.2 RIP..................................................................................................... 47
9.3 FIREWALL......................................................................................... 49
9.4 IP FILTER .......................................................................................... 51
9.5 DOMAIN NAME SERVICE (DNS) ..................................................... 54
9.6 BLOCKED PROTOCOLS .................................................................. 56
10. ADMIN............................................................................................... 61
10.1 USER CONFIG.................................................................................. 61
10.2 COMMIT & REBOOT......................................................................... 63
10.3 LOCAL IMAGE UPGRADE................................................................ 64
10.4 REMOTE IMAGE UPGRADE ............................................................ 65
10.5 ALARM .............................................................................................. 65
10.6 DIAGNOSTICS.................................................................................. 66
10.7 PORT SETTINGS.............................................................................. 66
10.8 SYSTEM LOG ................................................................................... 67
10.9 BACK/ RESTORE CONFIG............................................................... 68
10.10 MANAGEMENT CONTROL............................................................... 69

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C
Ch ha ap pt te er r 3 3 – – Q Qu ui ic ck k P Pr ro ot to oc co ol l S Se et tu up p
1. OVERVIEW ....................................................................................... 73
2. RFC 1483 BRIDGE............................................................................ 74
3. PPPOE ROUTE CONFIGURATION .................................................. 78
4. RFC 1483 + NAT ............................................................................... 82
5. PPPOA ROUTE CONFIGURATION .................................................. 86
6. IPOA ROUTE CONFIGURATION ...................................................... 90
7. DHCP CONFIGURATION.................................................................. 92
8. NAT CONFIGURATION ..................................................................... 94
APPENDIX A – SPECIFICATIONS............................................................. 96
APPENDIX B – WARRANTIES .................................................................. 97
APPENDIX C – REGULATIONS............................................................... 100
CONTACT INFORMATION ....................................................................... 102
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Re ev vi is si io on n M Ma ar rk ks s
Revision Date Notes
V 1.0 July 31, 2005 Software Version: 3.C52XAT1.8824/2.5.050505c

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Chapter 1
Getting Started
1. Overview
X8824r and X8824r+ are ADSL/ADSL2+ series of customer premise
equipments that provide high-speed asymmetrical data transmission
on a single twisted copper pair. The DSL line interface supports
various ADSL standards, up to ADSL2+ with X8824r+. At the DTE
side these CPEs provide one 10/100 Ethernet interface and one
USB port for easy connection to user’s PC or LAN environment. With
built-in IP routing, NAPT and firewall, these units serve as the
gateway to the Internet world. X8824r and X8824r+ deliver
broadband access for enterprises, telecommuters, home, and
remote office workers with high-speed data transfer requirements.
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2. Features
• Compliant with ITU-T G.992.1 (G.dmt), G.992.2 (G.lite) and ANSI
T1.413 Issue 2
• X8824r+ is additionally compliant with ITU-T G.992.3 (G.dmt.bis /
ADSL2), G.992.5 (ADSL2+) and provides up to 24 Mbps
downstream rate
• Compatible and interoperable with major Central Office side
ADSL DSLAM or Multi-service Access System
• One 10/100 Base-TX Ethernet port and one USB 1.1 device port
for PC / LAN connection
• RFC2684 / 1483 to bridge or route traffic over ATM over ADSL
• Support Networking protocols such as PPP, IP routing, NAPT,
DHCP server / relay / client
• Can work either in Bridge or Router mode
• Support local and remote configuration and management
through Web, Telnet or SNMP
• Simple firmware upgrade via TFTP, FTP or HTTP

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3. Packaging
This package consists of the following items:
X8824r ADSL device unit
RJ-45 Cable
RJ-11 Cable
AC Adapter
User’s Manual CD
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4. Appearance
Front Panel
Label LED
Status
Color Description
1PWR ON Green Power supply is connected.
Blinking Green Training with DSLAM.
2WAN
ON Green ADSL link is ready.
ON Green PPP sync up
3PPP
Blinking Green Data transmitting
4LAN ON Green
Ethernet transmitting
5USB ON Green USB port is connected
12345

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Rear Panel
Label Description
1WAN RJ-45 port; connect to a PC or LAN.
2USB USB port; connect to PC or LAN
3RESET Reset the modem back to factory settings by
holding down on this button.
4ETHERNET RJ-11 or RJ-45 port; connect to the ADSL
outlet.
X8824r uses RJ-11 Cable.
5PWR Power jack; connect to a power adapter.
4 3 2 15
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5. Hardware Installation
1. Connect one end of the ADSL cable to the WAN port of
X8824r and the other end to the ADSL wall outlet.
2. Use a RJ-45 cable to connect one end to the Ethernet port of
X8824r, and the other end to the LAN or a PC with an
Ethernet adapter installed.
3. Use a USB cable to connect one end to the USB port of
X8824r, and the other end to a PC with a USB port.
4. Plug in the AC adapter to the AC power socket, and then
connect the DC jack to the PWR inlet of X8824r.
Note: Be sure to use a RJ-45 crossover cable while connecting to a hub.
4Power Supply 1ADSL Outlet
2PC3USB

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6. Management
The device supports simple, flexible, and easy-to-operate methods
for management purposes. X8824r can be managed via the
following paths:
 Local Ethernet Port (Telnet) – connect the Ethernet port
to your local area network or directly to a PC. “Teln et”
X8824r from any workstation in the LAN. The default local
Ethernet IP address is “192.168.1.1”.
 Local Ethernet Port (Web Browser) – connect the
Ethernet port to your local area network or directly to a PC.
Launch your web browser and enter default local Ethernet
IP address “192.168.1.1” into the address bar.
 ADSL Port from Remote Site – while the ADSL
connection is in service, you may remotely “Telnet” X8824r
from a workstation connected to the CO equipment.
Note: As operating an ADSL device requires technical know-how and
experience. It is recommended that only qualified technical staffs
manage the device. Therefore, a password authentication is required
when you enter the web interface. To obtain the password, see the
Default Values section.
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7. Default Values
This device is pre-configured with the following parameters; you may
also re-load the default parameters by rebooting the router into the
Default configuration from the web browser.
Default Mode: Bridge Login Name: admin
Password:admin
Bridge Mode Setting WAN and ADSL
Ethernet (local) IP: 192.168.1.1 Local Line Code: Auto
Subnet Mask: 255.255.255.0 Trellis Mode: Enable
Full Duplex: Auto FDM Mode: EC
Protocol: RFC1483, Bridge Mode Coding Gain: Auto
VPI/VCI:8/35 Transmit Power Attenuation: 0dB
Class (QoS): UBR
Spanning Tree: Disable
Packet Filter: Any
Router Mode Setting DHCP Server: Disable
Ethernet (local) IP: 192.168.1.1 DNS Relay: Disable
Subnet Mask: 255.255.255.0
Note: The User Name and Password are case-sensitive.

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8. Software Upgrade
You may easily upgrade the embedded software by obtaining the
compressed upgrade kit from the service provider then following the
steps:
Click on the Local Image Upgrade link to upgrade the software
on the modem.
You may easily upgrade the embedded software by obtaining
the compressed upgrade kit from the service provider and then
following the steps:
a. Click on the Browse button to select the upgrade file.
b. Click on the Upload button to upload the file into the
modem
c. This process may last as long as 60 seconds.
Note: Strictly maintain stable power to the device while upgrading its
software. If the power fails during the upgrading process, contents in
the memory could be destroyed, and the system may hang. In such a
case, you must call the dealer or system integrator for repairs.
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Chapter 2
Web Interface Management
1. Overview
The Web management is provided in order to manage the ADSL
device as easily as possible. It provides a very user-friendly
configuration and graphical interface through a Web based platform.
You can configure a bridge or a router, as you feel appropriate. In the
section below, each configuration item is described in detail.
2. Preparation
1) Please refer the hardware installation procedure to install
modem.
2) You should configure the PC to the same IP subnet as the
modem.
For example: The modem: 192.168.1.1
Your PC: 192.168.1.x
3) Let your PC access the modem, and make sure that the
PING function is working properly. The default IP address
of this modem could be found in the default settings
section.
4) Open the Web browser (Internet explorer or Netscape),
enter the default IP address “192.168.1.1” for the website
address to access the web management page.
5) The
Login dialog box will pop up first.

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3. Login
 The window Enter Network Password will pop up while
starting the configuration. With the window open, type admin for
both the Username and the Password.
 After you log into the web interface, you will notice that it is
divided into seven different sections, or tabs. From this point on,
each tab is described in detail along with instructions for
configuration. The seven tabs are: Home, LAN, WAN, Bridging,
Routing, Services, and Admin.
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4. HOME
 After logging in, the first tab that will be displayed is the Home
tab. Under this tab, the System View page is displayed. This
page displays a summary of the interfaces and their settings.
 This page is divided into five sections. The table below
describes each section.
Section Name Description
Device Displays model name, hardware/software
version, device mode, uptime, current time,
time zone, daylight savings time, and
domain name.
DSL Displays operation status, last state, DSL
version, and DSL standard.

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WAN Interfaces Displays the WAN interface name,
encapsulation type, IP address, subnet
mask, lower interface, VPI/VCI values, and
operational status.
LAN Interface Displays the LAN interface name, MAC
address, IP address, subnet mask, lower
interface, transmission speed, duplex type
and operational status.
Services Summary Displays the interface name, and
enabled/disabled features, such as: NAT, IP
filter, RIP, DHCP relay, DHCP client, DHCP
server, and IGMP. A green check mark ()
indicates that the service has been enabled.
A red cross () indicates the service has
been disabled.
 To add, change, or remove any of the interface settings, click on
the interface name.
 Click on the Modify button to set the device date, time, time
zone, and other related settings. Click on the Submit button
when completed.
 SNTP: Select Enable if you would like the time to be
assigned by an SNTP server. By selecting this option you
will not be required to enter the time, date, or time zone.
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However, you must enter the domain name, which is the
SNTP address.
 Date: Enable this check box and select the date from the
drop-down list.
 Time: Enable this check box and select the time from the
drop-down list.
 Daylight Saving Time: Select ON or OFF as necessary.
 Name: Enter the name of the SNTP server.
 Domain Name: Enter the domain name or IP address of
the SNTP server.
 Click on the Submit button when completed and make sure
to Commit & Reboot.
5. LAN
Click on the LAN tab to view its sub-menu’s and configure the
LAN settings. The four sub-menu’s are: LAN Config, DHCP
Mode, DHCP Server, and DHCP Relay. Each sub-menu is
described below.
5.1 LAN Config
Click on the LAN Config link to change the LAN IP address/
subnet mask of the Ethernet and USB interface, decide where
the LAN is getting its IP address from, and enable or disable
IGMP.
If you are using the ADSL/Ethernet router with multiple PCs on
your LAN, you must connect the LAN via an Ethernet hub
connected to the device's LAN port. If you are using a single
PC with the ADSL/Ethernet router, you have two connection
options:
You can connect the PC directly to the LAN port using a
cross-over Ethernet cable.

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If the PC is USB-enabled, you can connect it directly to the
device's USB port. Only one computer can be connected in this
manner.
You can also use the USB and Ethernet interfaces
simultaneously, connecting your LAN to the Ethernet port and a
standalone PC to the USB port.
Follow the steps below in order to set up the LAN.
 Get LAN Address: Select Manual if you would like to enter
your own IP address. Select External DHCP Server if a
DHCP server other than this device assigns the IP
addresses. Select Internal DHCP Server if you would like
this device to assign the IP addresses.
 LAN IP Address: Enter the LAN IP address into these text
boxes. This is the IP address for the Ethernet port.
 LAN Network Mask: Enter the subnet mask of the LAN IP
address into these text boxes. This is the subnet mask for
the Ethernet port.
 IGMP: Indicates whether this interface is enabled with the
Internet Group Management Protocol. When enabled, the
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ADSL/Ethernet router collects and consolidates requests
from the LAN PCs to receive IGMP messages from
external computers. The interface also forwards IGMP
messages it receives on its WAN interface to the
appropriate hosts. The WAN interface must also be
enabled for the IGMP protocol Depending on your ISP’s
settings, choose to enable or disable IGMP.
 MTU: The Maximum Transmission Unit specifies the size in
bytes of the largest Ethernet packet that the interface will
accept. Packets larger than this size will be dropped.
 Click on the Submit button when completed and make sure
to Commit & Reboot.
 USB IP Address: Enter the LAN IP address into these text
boxes. This is the IP address for the USB port.
 USB Network Mask: Enter the subnet mask of the LAN IP
address into these text boxes. This is the subnet mask for
the USB port.
 IGMP: Indicates whether this interface is enabled with the
Internet Group Management Protocol. When enabled, the
ADSL/Ethernet router collects and consolidates requests
from the LAN PCs to receive IGMP messages from
external computers. The interface also forwards IGMP
messages it receives on its WAN interface to the
appropriate hosts. The WAN interface must also be
enabled for the IGMP protocol Depending on your ISP’s
settings, choose to enable or disable IGMP.

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 MTU: The Maximum Transmission Unit specifies the size in
bytes of the largest Ethernet packet that the interface will
accept. Packets larger than this size will be dropped.
 Click on the Submit button when completed and make sure
to Commit & Reboot.
5.2 DHCP Mode
Click on the DHCP Mode link to select a DHCP setting. From
the drop down list, select DHCP Server, DHCP Relay, or None
and click on the Submit button.
DHCP is a protocol that enables network administrators to
centrally manage the assignment and distribution of IP
information to computers on a network.
When you enable DHCP on a network, you allow a device -
such as your ADSL/Ethernet router or a router located with your
ISP - to assign temporary IP addresses to your computers
whenever they connect to your network. The assigning device
is called a DHCP server, and the receiving device is a DHCP
client.
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5.3 DHCP Server
Click on the DHCP Server link to view the DHCP Server
settings. The table displays the DHCP server settings, this
includes: start IP, end IP, domain name, gateway address, and
status.
Click on the Add button to enable a DHCP server and fill in the
IP information based on your ISP settings.

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An IP address pool typically includes a range private addresses
that you define. LAN administrators often define private IP
addresses for use only on their networks. You can also use
DHCP server pools to distribute multiple public IP addresses, if,
for example, these are to be shared among a larger set of LAN
computers.
You can create up to two DHCP server address pools. You can
define a single pool with addresses that can be assigned to
your LAN PCs (connected via the Ethernet port) and to a
USB-connected computer, as long you have assigned to the
USB and Ethernet interfaces static IP addresses that place
them in the same subnet.
 Start/End IP Addresses: Specify the lowest and highest
addresses in the pool, up to a maximum range of 254
addresses.
 Mac Address: A MAC address is a manufacturer-assigned
hardware ID that is unique for each device on a network.
Use this field only if you want to assign a specific IP
address to a specific computer (that is, you are creating an
exception to the dynamic assignment of addresses). The IP
address you specify will be assigned to the computer that
corresponds to this MAC address. If you type a MAC
address here, you must have specified the same IP
address in both the Start IP Address and End IP Address
fields.
 Net Mask: Specifies which portion of each IP addresses in
this range refers to the network and which portion refers to
the host (computer). You can use the net mask to
distinguish which pool of addresses should be distributed to
a particular subset of computers on your LAN (call a
subnet).
 Domain Name: A user-friendly name that refers to the
subnet that includes the addresses in this pool.
 Gateway Address: The address of the default gateway for
computers that receive IP addresses from this pool. If no
value is specified, then the appropriate LAN (eth-0) or USB
(usb-0) port address on the device will be distributed to
each PC as its gateway address, depending on how each
is connected. See Configuring IP Routes for an explanation
of gateway addresses.
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 DNS/SDNS: The IP address of the Domain Name System
server to be used by computers that receive IP addresses
from this pool. The DNS translates common Internet names
that you type into your web browser into their equivalent
numeric IP addresses. Typically, this server is located with
your ISP.
 SMTP...SWINS (optional): The IP addresses of devices
that perform various services for computers that receive IP
addresses from this pool (such as the SMTP, or Simple
Mail Transfer Protocol, server which handles e-mail traffic).
Contact your ISP for these addresses.
 Click on the Submit button when completed and make sure
to Commit & Reboot.
5.4 DHCP Relay
Click on the DHCP Relay link to view the DHCP Relay settings.
Some ISPs perform the DHCP server function for their
customers' home/small office networks. In this case, you can
configure the device as a DHCP relay agent. When a computer
on your network requests Internet access, the ADSL/Ethernet
router connects your ISP to obtain an IP address and other
information, and then forwards that information to the computer.
Fill in the DHCP server IP address in the text boxes and select
an interface name from the dorp down list, then click on the
Add button.

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6. WAN
Click on the WAN tab to view its sub-menu’s and configure the
WAN settings. The five sub-menu’s are: DSL, ATM VC, PPP,
EOA, and IPOA. Each sub-menu is described below.
6.1 DSL
The DSL Status page displays current information on the DSL
line performance. The page refreshes according to the setting
in the Refresh Rate drop-down list, which you can configure.
In the DSL Status table, the Operational Status setting displays
a red, orange, or green ball to indicate that the DSL line is idle,
starting up, or up-and-running, respectively. You can click Loop
Stop to end the DSL connection. To restart the connection, you
can click Loop Start.
Although you generally will not need to view the remaining
parameters, they may be helpful when troubleshooting
connection or performance problems with your ISP.
Click on the DSL link to view the DSL status. Click on the DSL
Param button to view the DSL parameters and the Stats button
to view the DSL statistics. Both the DSL Parameters and DSL
Statistics are described below.
Click on the Clear button to clear and refresh the DSL status.
You may also change the page refresh rate by selecting a
different time period from the Refresh Rate drop down list.
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a) DSL Parameters
Click on the DSL Param button to view the DSL parameters.
Another window will then display the DSL parameters, which
may be different due to the type and speed of the network.
Click on the Close button to close the window, or click on the
Refresh button to refresh the status.
b) DSL Stats
Click on the Stats button to view the DSL status. Another
window will then display the DSL status, which may be different
due to the type and speed of the network. Click on the Close
button to close the window, or click on the Refresh button to
refresh the status.

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6.2 ATM VC
Click on the ATM VC link to view the ATM VC table. This table
displays the interface name, VPI/VCI values, Mux type, and
maximum protocols per AAL5.
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Click on the trash can icon to delete the current interface, or
edit the current interface by clicking on the pencil icon.
Click on the Add button to another interface.
The devices WAN-side interfaces are used to communication
via the DSL port. A WAN interface comprises two layers: a
lower-level ATM VC interface and a higher-level protocol
interface:
The ATM VC interface enables the device to communicate
using the Asynchronous Transfer Mode protocol. The ATM
protocol provides a common format for transmitting data over a
variety of hardware systems that make up the backbone of the
Internet. The virtual circuit (VC) properties of the ATM VC
interface identify a unique path that your ADSL/Ethernet router
uses to communicate via the ATM-based network with the
telephone company central office equipment.
The higher-level protocol interface(s) operate "on top" of the
ATM VC interface. The higher-level interface handles the
protocols needed to log onto and exchange data with the ISP's
access server. ISPs can use several different protocols,
including the Point-to-Point Protocol (PPP), Ethernet-over-ATM
(EoA) protocol, or the Internet Protocol-over-ATM (IPoA). Be
sure to create the specific type of WAN interface your ISP
requires.
After you have defined the ATM VC properties as described in
this topic, you can configure one of the higher level WAN
interfaces to enable communication with your ISP.
After you click on the Add button, another window will appear.

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 VC Interface: The name of the lower-level interface on
which this VC operates. The low-level interface names are
preconfigured in the software and identify the type of traffic
that can be supported, such as data or voice. Internet data
services typically use an AAL5-type interface.
 VPI, VCI, and Mux Type: These settings identify a unique
ATM data path for communication between your
ADSL/Ethernet router and your ISP.
 Max Proto per AAL5: If you are using an AAL5-type
of interface, this setting indicates the number of higher
level interfaces that the VC can support (the higher level
interfaces can be PPP, EoA, or IPoA interfaces). Contact
your ISP to determine which connection protocol(s) they
require.
 Click on the Submit button when completed and make sure
to Commit & Reboot.
6.3 Point to Point Protocol (PPP)
Click on the PPP link to view the PPP configuration table. This
table displays PPP information such as: interface name,
interface type, protocol, WAN IP, gateway IP, default route,
DHCP, DNS, and operation status.
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Click on the trash can icon to delete the current interface, or
edit the current interface by clicking on the pencil icon.
Click on the Add button to another interface.
The Point-to-Point Protocol (PPP) is one of several protocols
used to enable communication between ISPs and their
customers. PPP performs tasks such as the following:
 Identifying the type of service the ISP provides to a given
customer
 Identifying the customer to the ISP through a username
and password login
 Enabling the ISP to assign Internet information to the
customer's computers
PPP can be used only when your connection with your ISP is a
routed connection, not with a bridged connection.
After you click on the Add button, another window will appear.

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 PPP Interface: The predefined name of the PPP interface.
 ATM VC: The Virtual Circuit over which this PPP data is
sent. The VC identifies the physical path the data takes to
reach your ISP. See Configuring the ATM VC for more
information.
 Interface Sec Type: The type of Firewall protections that
are in effect on the interface (public, private, or DMZ): A
public interface connects to the Internet (PPP interfaces are
typically public). Packets received on a public interface are
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subject to the most restrictive set of firewall protections
defined in the software. A private interface connects to your
LAN, such as the Ethernet interface. Packets received on a
private interface are subject to a less restrictive set of
protections, because they originate within the network. The
term DMZ (de-militarized zone), in Internet networking
terms, refers to computers that are available for both public
and in-network accesses (such as a company's public Web
server). Packets incoming on a DMZ interface -- whether
from a LAN or external source -- are subject to a set of
protections that is in between public and private interfaces
in terms of restrictiveness.
 Protocol: The type of PPP protocol used. Your ISP may
use PPP-over-Ethernet (PPPoE) or PPP-over-ATM
(PPPoA).
 Default Route: Indicates whether the ADSL/Ethernet router
should use the IP address assigned to this connection as
its default route. Can be Enabled or Disabled. See
Configuring IP Routes for an explanation of default routes.
 MTU: The Maximum Transmission Unit specifies the size in
bytes of the largest Ethernet packet that the interface will
accept. Packets larger than this size will be dropped.
 Use DHCP: When set to Enable, the device will acquire
additional IP information from the ISP's DHCP server. The
PPP connection itself acquires the device's IP address,
mask, DNS address, and default gateway address. With
Use DHCP enabled, the device will acquire IP addresses
for various other server types (WINS, SMTP, POP3, etc. --
these server types are listed on the DHCP Server
Configuration page).
 Use DNS: When set to Enable, the DNS address learned
through the PPP connection will be distributed to clients of
the device's DHCP server. This option is useful only when
the ADSL/Ethernet Router is configured to act as a DHCP
server for your LAN.
 Security Protocol: Select a security protocol and then
enter the user name and password.
 Click on the Submit button when completed and make sure
to Commit & Reboot.

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6.4 Ethernet over ATM (EoA)
Click on the EOA link to view the RFC1483/EoA configuration
table. This table displays EoA information such as: interface
name, interface security type, lower interface, config IP,
network IP, DHCP, default route, gateway IP, and status.
Click on the trash can icon to delete the current interface, or
edit the current interface by clicking on the pencil icon.
Click on the Add button to add another interface.
The Ethernet-over-ATM (EoA) protocol is commonly used to
carry data between local area networks that use the Ethernet
protocol and wide-area networks that use the ATM protocol.
Many telecommunications industry networks use the ATM
protocol. ISPs who provide DSL services often use the EoA
protocol for data transfer with their customers' DSL modems.
EoA can be implemented to provide a bridged connection
between a DSL modem and the ISP. In a bridged connection,
data is shared between the ISP's network and their customer's
as if the networks were on the same physical LAN. Bridged
connections do not use the IP protocol. EoA can also be
configured to provide a routed connection with the ISP, which
uses the IP protocol to exchange data.
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After you click on the Add button, another window will appear.
 EOA Interface: The name the software uses to identify the
EoA interface.
 Interface Sec Type: The type of security protections in
effect on the interface (public, private, or DMZ): A public
interface connects to the Internet (IPoA interfaces are
typically public). Packets received on a public interface are
subject to the most restrictive set of firewall protections
defined in the software.A private interface connects to your
LAN, such as the Ethernet interface. Packets received on a
private interface are subject to a less restrictive set of
protections, because they originate within the network. The
term DMZ (de-militarized zone), in Internet networking
terms, refers to computers that are available for both public
and in-network accesses (such as a company's public Web
server). Packets incoming on a DMZ interface -- whether
from a LAN or external source -- are subject to a level of
protection that is in between those for public and private
interfaces.

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 Lower interface: EoA interfaces are defined in software,
and then associated with lower-level software and
hardware structures (at the lowest level, they are
associated with a physical port - the WAN port). This field
should reflect an interface name defined in the next lower
level of software over which the EoA interface will operate.
This will be an ATM VC interface, such as aal5-0, as
described in Configuring the ATM VC.
 Config IP Address and Net Mask: The IP address and
network mask you want to assign to the interface. If the
interface will be used for bridging with your ISP and you will
not be using the device as a router on your LAN, then you
do not need to specify IP information. If you enable DHCP
for this interface, then the Configured IP address will serve
only as a request to the DHCP server. The actual address
that is assigned by the ISP may differ if this address is not
available.
 Use DHCP: When enabled, this setting instructs the device
to accept IP information assigned dynamically by your
ISP's DHCP server. If the interface will be used for bridging
with your ISP and you will not be routing data through it,
leave this checkbox unselected.
 Default Route: Indicates whether the ADSL/Ethernet router
should use the IP address assigned to this interface, if any,
as its default route for your LAN. This can be Enable or
Disable. See Configuring IP Routes for an explanation of
default routes.
 Gateway Address: The external IP address that the
ADSL/Ethernet router communicates with via the EoA
interface to gain access to the Internet. This is typically an
ISP server.
 Click on the Submit button when completed and make sure
to Commit & Reboot.
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6.5 IP over ATM (IPoA)
Click on the IPoA link to view the IP over ATM configuration
table. This table displays IPoA information such as: interface
name, interface security type, lower interface, config IP,
network IP, subnet mask gateway IP, and status.
Click on the trash can icon to delete the current interface, or
edit the current interface by clicking on the pencil icon.
Click on the Add button to add another interface.
An IPoA interface can be used to exchange IP packets over the
ATM network, without using an underlying Ethernet over ATM
(EOA) connection. Typically, this type of interface is used only
in product development environments, to eliminate unneeded
variables when testing IP layer processing.
After you click on the Add button, another window will appear.

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 IPoA Interface: The name the software uses to identify the
IPoA interface
 Config IP Address and Net Mask: The IP address and
network mask you want to assign to the interface. If the
interface will be used for bridging with your ISP and you will
not be using the device as a router on your LAN, then you
do not need to specify IP information. If you enable DHCP
for this interface, then the Configured IP address will serve
only as a request to the DHCP server. The actual address
that is assigned by the ISP may differ if this address is not
available.
 Interface Security Type: The type of firewall protections
that are in effect on the interface (public, private, or DMZ):
A public interface connects to the Internet (IPoA interfaces
are typically public). Packets received on a public interface
are subject to the most restrictive set of firewall protections
defined in the software. A private interface connects to your
LAN, such as the Ethernet interface. Packets received on a
private interface are subject to a less restrictive set of
protections, because they originate within the network. The
term DMZ (de-militarized zone), in Internet networking
terms, refers to computers that are available for both public
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and in-network accesses (such as a company's public Web
server). Packets incoming on a DMZ interface -- whether
from a LAN or external source -- are subject to a level of
protection that is in between public and private interfaces in
terms of restrictiveness.
 RFC 1577: Specifies whether the IPoA protocol to be used
complies with the IEFT specification named "RFC 1577 -
Classical IP and ARP over ATM" (contact your ISP if
unsure).
 Lower interface: An IPoA interface must be associated
with one or more ATM VCs that have been defined on the
system. The ATM VC is also considered an interface--one
that performs "lower level" functions (i.e., closer to
hardware) than the IPoA interface. See Configuring the
ATM VC for information about ATM VC interfaces.
 Gateway Address: The external IP address that the
ADSL/Ethernet router communicates with via the IPoA
interface to gain access to the Internet. This is typically an
ISP server.
 Click on the Submit button when completed and make sure
to Commit & Reboot.