DQ Technology 202ER User manual

VisionNet
VisionNetVisionNet
VisionNet
202ER ADSL Ethernet Router
User’s Manual
Revision 1.1
February 27, 2003

VisionNet 202ER ADSL Ethernet Router User’s Guide
iii
Table of Contents
1Introduction.......................................................... 9
Features..................................................................................9
System Requirements...........................................................9
Using this Document............................................................10
Notational conventions.................................................10
Typographical conventions ..........................................10
Special messages.........................................................10
2Getting to Know the VisionNet 202ER ............. 11
Parts Check..........................................................................11
Front Panel...........................................................................12
Rear Panel............................................................................13
3Quick Start......................................................... 15
Part 1 — Connecting the Hardware....................................15
Step 1. Connect the ADSL cable and optional
telephone...................................................................16
Step 2. Connect the Ethernet cable.............................17
Step 3. Attach the power connector............................17
Step 4. Turn on the VisionNet 202ER and
power up your systems.............................................17
Part 2 — Configuring Your Computers ..............................18
Before you begin...........................................................18
Windows95, 98 PCs:................................................18
Windows NT 4.0 workstations: ....................................19
Windows 2000 PCs: .....................................................20
Windows Me PCs .........................................................21
Assigning static Internet information to your
PCs.............................................................................22
Part 3 — Configuring the VisionNet 202ER………………23
Logging in to the VisionNet 202ER Quick
Setup..........................................................................23
Operation Mode ............................................................24

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DNS Settings.................................................................24
PPP Settings.................................................................24
Default Router Settings ................................................25
Testing Your Installation......................................................26
Using VisionNet’s Diagnostic Utilities.................................27
4Getting Started with the Configuration
Manager.......................................................... 29
Accessing the Configuration Manager ...............................29
Functional Layout.................................................................31
Commonly used buttons ..............................................31
The Home Tab and System View Table............................32
Changing the System Date and Time................................34
Changing the System Date and Time................................34
Changing Your Login Password.........................................35
Committing Your Changes and Rebooting the
Device................................................................................36
Committing your changes ............................................36
Rebooting the device using Configuration
Manager.....................................................................37
5Setting the LAN IP Address.............................. 39
Configuring the LAN IP Address.........................................39
6Viewing System IP Information and
Performance Statistics ................................... 43
Viewing the VisionNet 202ER’s IP addresses...................43
Viewing IP Global Statistics.................................................44
7Configuring Dynamic Host Configuration
Protocol........................................................... 45
Overview of DHCP...............................................................45
What is DHCP?.............................................................45
Why use DHCP?...........................................................45
VisionNet 202ER DHCP modes..................................46

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Configuring DHCP Server...................................................47
Viewing, modifying, and deleting address
pools, and excluding IP addresses from a
pool.............................................................................50
Viewing current DHCP address assignments ............50
Configuring DHCP Relay.....................................................52
Setting the DHCP Mode......................................................53
8Configuring Network Address Translation........ 55
Overview of NAT..................................................................55
Your Default NAT Setup......................................................56
Viewing NAT Global Settings and Statistics .....................57
Viewing NAT Rules and Rule Statistics..............................60
Viewing Current NAT Translations .....................................61
Adding NAT Rules ...............................................................63
The napt rule: Translating between private and
public IP addresses...................................................63
The rdr rule: Allowing external access to a
LAN computer............................................................65
The basic rule: Performing 1:1 translations ................68
The filter rule: Configuring a basic rule with
additional criteria........................................................69
The bimap rule: Performing two-way
translations.................................................................71
The pass rule: Allowing specific addresses to
pass through untranslated........................................72
9Configuring DNS Server Addresses................. 79
About DNS............................................................................79
Assigning DNS Addresses..................................................79
Configuring DNS Relay .......................................................74
10 Configuring IP Routes....................................... 77
Overview of IP Routes.........................................................77
Comparing IP routing to telephone switching.............77
Hops and gateways......................................................78
Using IP routes to define default gateways.................78

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Do I need to define IP routes?.....................................78
Viewing the IP Routing Table..............................................79
Adding IP Routes.................................................................81
11 Configuring the Routing Information
Protocol........................................................... 89
RIP Overview .......................................................................89
When should you configure RIP?................................89
Configuring the VisionNet 202ER’s Interfaces with
RIP.....................................................................................84
Viewing RIP Statistics..........................................................86
12 Configuring the ATM VCC ................................ 87
Viewing Your ATM VC Setup..............................................87
Adding ATM VCs .................................................................88
Modifying ATM VCs.............................................................90
13 Configuring PPP Interfaces............................... 91
Viewing Your Current PPP Configuration..........................91
Viewing PPP Interface Details............................................99
Adding a PPP Interface Definition ......................................96
Modifying and Deleting PPP Interfaces..............................97
14 Configuring EOA Interfaces.............................. 99
Overview of EOA..................................................................99
Viewing Your EOA Setup..................................................100
Adding EOA Interfaces......................................................102
15 Configuring IPoA Interfaces............................105
Viewing Your IPoA Interface Setup ..................................105
Adding IPoA Interfaces......................................................106
16 Configuring Bridging........................................109

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Overview of Bridges...........................................................109
Using the Bridging Feature................................................110
Defining Bridge Interfaces.................................................111
Deleting a Bridge Interface................................................112
17 Configuring Firewall Settings..........................113
Configuring Global Firewall Settings.................................113
Managing the Black List ....................................................116
18 Configuring IP Filters.......................................117
Overview.............................................................................117
Viewing Your IP Filter Configuration.................................117
Configuring IP Filter Global Settings.................................118
Creating IP Filter Rules......................................................119
IP filter rule examples ........................................................124
Viewing IP Filter Statistics .................................................126
Managing Current IP Filter Sessions................................126
19 Viewing DSL Parameters................................129
AIP Addresses, Network Masks, and
Subnets.........................................................132
IP Addresses......................................................................132
Structure of an IP address..........................................132
Network classes..........................................................133
Subnet masks.....................................................................133
BBinary Numbers............................................... 135
Binary Numbers .................................................................135
Bits and bytes..............................................................135
CTroubleshooting............................................... 137

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Diagnosing Problem using IP Utilities...............................139
ping ..............................................................................139
nslookup ......................................................................140
DGlossary........................................................... 141
FCC Compliance Statements
NOTE : 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 residential installation. 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. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the following
measures :
Reorient or relocate the receiving antenna
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
Consult the dealer or an experienced radio/TV technician for help.
Warning : Modifications not expressly approved by the manufacturer could void the user’s
authority to operated the equipment under FCC rules

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4 Getting Started with the Configuration
Manager
The VisionNet 202ER includes preinstalled program called the
Configuration Manager, which provides 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 access it through
your web browser from any PC connected to the VisionNet 202ER
via the LAN port.
This chapter describes how to use the Configuration Manager.
Note
The VisionNet 202ER may already be configured to provide Internet
connectivity for your network. If it works properly with the
preconfigured settings, then you may not need to use the
Configuration Manager. Contact your ISP to determine which
settings you may need to change, if any.
Accessing the Configuration Manager
The Configuration Manager program is preinstalled into memory on
the VisionNet 202ER. To access the program, you need the
following:
 A PC or laptop connected to the LAN port on the device as
described in the Quick Start chapter.
 An web browser installed on the PC. The program is
designed to work best with Microsoft Internet Explorer®
version 5.0, Netscape Navigator® version 6.2, or later
versions.
You can access the program from any computer connected to the
VisionNet 202ER.
1. From a LAN computer, open your web browser, type the
following URL in the web address (or location) box, and
press <Enter>:
http://10.0.0.2
These are the predefined IP addresses for the LAN ports on the
VisionNet 202ER.
A login screen displays, as shown in Figure 7.

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Figure 7. Login Screen
2. Enter your user name and password, and then click
.
3. The first time you launch the program, use these defaults:
Default User Name: admin
Default Password : visionnet
Note
You can change the password at any time (see Changing Your
Login Password on page 35). The user name cannot be changed.
The System View page displays each time you launch the
program (shown in Figure 8 on page 31).

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Functional Layout
Configuration Manager tasks are grouped into categories, which
you can access by clicking the tabs at the top of each page. Each
tab, except for the Home tab which displays when you first log in,
displays the available tasks horizontally the top of the page. You
can click on these to display the specific configuration options.
A separate page displays for each task in the task bar. The left-
most task displays by default when you click on a new tab. The
same task may appear in more than one tab, when appropriate. For
example, the Lan Config task displays in both the LAN tab and the
Routing tab.
Commonly used buttons
The following buttons are used throughout the application.
Button Function
Stores in temporary system memory any changes you
have made on the current page. See “Committing your
changes” on page 36 for instructions on storing
changes permanently.
Redisplays the current page with updated
statistics.
When accumulated statistics are displaying, this
button resets the statistics to their initial values.
Launches the online help for the current topic in a
separate browser window. Help is available from
any main topic page.

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The Home Tab and System View Table
The Home Tab displays the System View table when you first
access the program:
Figure 8. System View Page
The System View table provides a snapshot of your system
configuration, and provides links to the software pages that enable
you to configure each setting (if available). The following table
describes the various sections of the system view table.
Table Heading Description
Device Displays basic information about the VisionNet
202ER hardware and software versions, the
system uptime (since the last reboot), and the
preconfigured operating mode.
DSL Displays performance statistics for the DSL line.
You can click the DSL link in the Advanced title
bar to display additional DSL settings, which are
described in Chapter 14.
WAN Interfaces Displays the software name(s) and various
settings for the device interfaces that
communicate with your ISP via DSL. Although you
only have one physical DSL port, multiple
software-defined interfaces can be configured to
use it. See the ATM VCC, PPP, EOA, and IPoA
chapters (Chapters 12, 13, 14, and 15,
respectively) for more information about the
interfaces defined on you system.

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Table Heading Description
LAN Interfaces Displays the software names and various settings
for the device interfaces that communicate directly
with your network. These typically include at least
one Ethernet interface, named eth-0, and may
include a USB interface named usb-0. You can
configure some properties of these interfaces, as
described in Chapter 5.
Services Summary Displays the following service that the VisionNet
202ER performs to help you manage your
network:
oTranslating private IP addresses to your
public IP address (NAT, Chapter 8).
oSetting up filtering rules that accept or deny
incoming or outgoing data. (IP Filter,
Chapter 16).
oEnabling router-to-router communication
(RIP, Chapter 9).
oDynamic assignment or receipt of IP
information (DHCP, Chapter 7).
oMessage forwarding based on Internet Group
assignment (IGMP, not configurable).

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Changing the System Date and Time
The device keeps a record of the current date and time, which it
uses to calculate and report various performance data.
Note
Changing the VisionNet 202ER date and time does not affect the
date and time on your PCs.
Follow these instructions to change the date and time:
1. At the bottom of the System View page, click .
The System – Modify page displays in a separate browser
window:
Figure 9. System – Modify Page
2. Use the drop-down lists to select a new date and time.
3. Click .
A page displays to confirm your change.
4. Click to return to the System View page.
5. Click
Save and Reboot in the Save Setting tab.
6. Click to save your changes to permanent memory.

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Changing Your Login Password
The first time you log into the Configuration Manager, you use the
default user ID and password (root and root). The system allows
only one user ID and password. Only the password can be changed.
Note
This user ID and password is only used for logging into the
Configuration Manager; it is not the same as the login you may use
to connect to your ISP (described in Chapter 12).
To change the Configuration Manager login password:
1. Click the Password Configuration in the Admin tab
The User Password Configuration page displays by default.
Figure 10. User Password Configuration Page
2. Type your current password in the Old Password text box.
3. Type the new password in the New Password text box and
again in the Confirm New text box.
The password can be up to eight ASCII characters long. When
logging in, you must type the new password in the same upper
and lower case characters that you use here.
4. Click .
5. Click
Save and Reboot in the Save Setting tab.
6. Click to save your changes to permanent memory.

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Committing Your Changes and Rebooting the Device
Committing your changes
Whenever you use the Configuration Manager to change system
settings, the changes are initially placed in temporary storage
(called random access memory or RAM). Your changes are made
effective when you submit them, but will be lost if the device is reset
or turned off.
To save your changes for future use, you can use the commit
function. This function saves your changes from RAM to permanent
storage (called flash memory).
Note
Submitting changes saves them only until the device is reset or
powered down. Committing changes saves them permanently.
Follow these steps to commit changes to permanent storage.
1. Click
Save and Reboot in the Save Setting tab.
The Save and Reboot page displays:
Figure 11. Save and Reboot Page
2. Click . (Disregard the selection in the Reboot Mode
drop-down list; it does not affect the commit process.)
The changes are saved to permanent storage.
The previous settings are copied to backup storage so that they
can be recalled if your new settings do not work properly (see
the rebooting instructions on page 37).

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Rebooting the device using Configuration Manager
To reboot the device, display the Commit and Reboot page, select
the appropriate reboot mode from the drop-down menu, and then
click .
You can select from the following three options when rebooting:
Option Description
Reboot from Last
Configuration Reboots the device using the current settings in
permanent memory, including any changes you
just committed.
Reboot from Backup
Configuration Reboots the device using settings stored in
backup memory. These are the settings that were
in effect before you committed new settings in the
current session.
Reboot from Default
Configuration Reboots the device to default settings provided by
your ISP or the manufacturer. Choosing this
option erases any custom settings.
WARNING
Do not reboot the device using the Reset button on the back panel
of the VisionNet 202ER to activate new changes. This button
resets the device settings to the manufacturer’s default values.
Any custom settings will be lost.

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5 Setting the LAN IPAddress
This chapter describes how to configure the interfaces on the
ADSL/Ethernet router that communicate with your LAN..
Configuring your LAN IP address
If you are using the ADSL/Ethernet router with multiple PCs on your
LAN, you must connect the LAN via an Ethernet hub to the device's
LAN port, called eth-0.
You must assign a unique IP address to each device port that you
use.
Note
The instructions that follow assume that the device has been
preconfigured to operate in Routing mode, which uses the IP
protocol to determine how to exchange data among your PCs, the
device, and your ISP. If your device is configured in Bridging
mode, its ports do not require IP addresses. The operating mode
displays at the top of the LAN Configuration page and cannot be
changed by the user.
Configuring the LAN IP Address
The LAN IP address identifies the LAN port (eth-0) as a node on
your network; that is, its IP address must be in the same subnet as
the PCs on your LAN.
Definition
A network node can be thought of as any port on the network,
such as the VisionNet 202ER’s LAN port and the network interface
cards on your PCs. See Appendix A for an explanation of
subnets..
You can change the default to reflect the set of IP addresses that
you want to use with your network.
If your network uses a local DHCP server (other than the
ADSL/Ethernet router) to assign IP addresses, you can configure
the device to accept and use a LAN IP address assigned by that
server. In this mode, the ADSL/Ethernet router is considered a
DHCP client of your DHCP server.
Note
The VisionNet 202ER itself can function as a DHCP server for
your LAN computers, as described in Chapter 5, but not for its
own LAN port.

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Follow these steps to change the default LAN IP address or to
configure the LAN port as a DHCP client.
1. Launch Configuration Manager, and then click the LAN
Config.
The LAN Configuration page displays, as shown in Figure 12.
Figure 12. LAN Configuration Page

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The LAN Configuration table displays the following settings:
Setting Description
System Mode The preconfigured mode for your device, such as
Routing or Bridging mode. This setting is not user -
configurable.
LAN IP
Address The IP address your computers use to identify the
device’s LAN port.
Note that the public IP address assigned to you by your
ISP is not your LAN IP address. The public IP address
identifies the WAN (ADSL) port on your ADSL/Ethernet
router to the Internet.
LAN Network
Mask The LAN Network mask identifies which parts of the
LAN IP Address refer to your network as a whole and
which parts refer specifically to nodes on the network.
Your device is preconfigured with a default network
mask of 255.0.0.0.
Use DHCP When checked, this setting instructs the device to
accept LAN IP information assigned dynamically from
another DHCP server already configured on your
network. The VisionNet 202ER cannot act as a DHCP
server for its own LAN port.
2. Enter a LAN IP address and network mask, or click the
DHCP Enable radio button.
 Entering a fixed address: If you are using routing services
on you LAN such as DHCP and NAT, you will want to
assign a fixed LAN IP address and mask. This ensures that
your LAN computers have a fixed address that they use to
communicate with the device.
The IP address you assign must be on the same subnet as
your LAN computers that connect to this port (that is, the
network ID portion of their IP addresses and their subnet
masks must be the same). See Appendix A for an
explanation of IP addresses and network masks.
You may need to update the DHCP configuration so that
the addresses that the DHCP server dynamically assigns
to your computers are on the same subnet as the new LAN
IP address. See Chapter 7 for instructions on changing the
pool of dynamically assigned addresses. In addition, if you
change the DHCP pool, you will also need to update the
NAT configuration so the new IP addresses are translated
properly. See Chapter 8 for instructions on NAT.
 Enabling DHCP: If another computer on your LAN
provides DHCP services for your network, you can click the
DHCP service for the LAN port. Check with your ISP to
determine if this is advisable.
When you click the Enable radio button, the LAN Network
Mask field will be dimmed (made unavailable for entry).
The LAN IP Address field will remain editable, however.
The address that you specify here will be used as a
requested IP address from the DHCP server. This is