tecomAR4021

AR4021

User’s Manual

Preliminary Version. Copyright © 2002-2003 by TECOM CO., LTD.

TECOM CO., LTD. 23, R&D ROAD 2

SCIENCE-BASED INDUSTRIAL PARK HSIN-CHU TAIWAN R.O.C.

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Table of Contents 1. INTRODUCTION..................................................................................................................................................... 4

2. INSTALLATION....................................................................................................................................................... 5

FRONT PANEL ................................................................................................................................................................. 5 REAR PANEL ................................................................................................................................................................... 5 CONNECTING THE HARDWARE........................................................................................................................................ 5

Step 1. Connect the ADSL cable and optional telephone. ......................................................................................... 7 Step 2. Connect the Ethernet cable............................................................................................................................ 7 Step 3. Attach the power connector. .......................................................................................................................... 7 Step 4. Turn on the AR4021 and power up your systems........................................................................................... 7 Step 5. Configure the AR4021B through the WEB interface ..................................................................................... 7 Step 6. Save the configurations and Reboot. ............................................................................................................. 8

3. CONFIGURATION .................................................................................................................................................. 8

3.1 SETUP............................................................................................................................................................... 8 3.2 ESTABLISH THE CONNECTION .......................................................................................................................... 8 3.3 QUICK SETUP ................................................................................................................................................. 11 3.3.1 PPPOVER ETHERNET (PPPOE) CONFIGURATION ............................................................................................ 11 3.3.1.1 ATM PVC CONFIGURATION ........................................................................................................................ 11 3.3.1.2 CONNECTION TYPE AND ENCAPSULATION MODE ....................................................................................... 13 3.3.1.3 PPP USERNAME AND PASSWORD .................................................................................................................. 13 3.3.1.4 IGMP MULTICAST, WAN SERVICE, AND QOS ............................................................................................. 15 3.3.1.5 DEVICE SETUP............................................................................................................................................... 15 3.3.1.6 WAN SETUP – SUMMERY.............................................................................................................................. 17 3.3.2 IP OVER ATM (IPOA) CONFIGURATION ...................................................................................................... 17 3.3.2.1 ATM PVC CONFIGURATION ........................................................................................................................ 17 3.3.2.2 CONNECTION TYPE....................................................................................................................................... 18 3.3.2.3 WAN IP SETTINGS ........................................................................................................................................ 19 3.3.2.4 NAT, IGMP MULTICAST, WAN SERVICE, AND QOS.................................................................................... 20 3.3.2.5 DEVICE SETUP............................................................................................................................................... 22 3.3.2.6 WAN SETUP – SUMMARY.............................................................................................................................. 23 3.3.3 BRIDGE CONFIGURATION ............................................................................................................................. 23 3.3.3.1 ATM PVC CONFIGURATION ........................................................................................................................ 24 3.3.3.2 CONNECTION TYPE....................................................................................................................................... 24 3.3.3.3 WAN SERVICE .............................................................................................................................................. 26 3.3.3.4 DEVICE SETUP............................................................................................................................................... 27

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3.3.3.5 WAN SETUP – SUMMERY.............................................................................................................................. 28 3.3.4 MAC ENCAPSULATION ROUTING (MER) CONFIGURATION ....................................................................... 28 3.3.4.1 ATM PVC CONFIGURATION ........................................................................................................................ 28 3.3.4.2 CONNECTION TYPE....................................................................................................................................... 29 3.3.4.3 WAN IP SETTINGS ........................................................................................................................................ 30 3.3.4.4 NAT, IGMP MULTICAST, WAN SERVICE, AND QOS.................................................................................... 31 3.3.4.5 DEVICE SETUP............................................................................................................................................... 31 3.3.4.6 WAN SETUP – SUMMERY.............................................................................................................................. 31 3.3.5 PPP OVER ATM (PPPOA) CONFIGURATION.................................................................................................... 32 3.3.5.1 ATM PVC CONFIGURATION ........................................................................................................................ 32 3.3.5.2 CONNECTION TYPE....................................................................................................................................... 32 3.3.5.3 PPP USERNAME AND PASSWORD .................................................................................................................. 32 3.3.5.4 IGMP MULTICAST, WAN SERVICE, AND QOS ............................................................................................. 32 3.3.5.5 DEVICE SETUP............................................................................................................................................... 32 3.3.5.6 WAN SETUP – SUMMERY.............................................................................................................................. 32 3.4 ADVANCED SETUP ......................................................................................................................................... 32 3.4.1 WAN.............................................................................................................................................................. 33 3.4.2 LAN............................................................................................................................................................... 34 3.4.3 FIREWALL...................................................................................................................................................... 34 3.4.4 QUALITY OF SERVICE ................................................................................................................................... 38 3.4.5 ROUTING ....................................................................................................................................................... 39 3.4.6 DNS SERVER ................................................................................................................................................. 43 3.4.7 DIAGNOSTICS ................................................................................................................................................ 44 3.4.8 MANAGEMENT .............................................................................................................................................. 45 3.4.8.1 SETTINGS....................................................................................................................................................... 45 3.4.8.2 SYSTEM LOG ................................................................................................................................................. 48 3.4.8.3 SNMP AGENT ............................................................................................................................................... 49 3.4.8.4 ACCESS CONTROL ........................................................................................................................................ 50 3.4.8.5 UPDATE SOFTWARE....................................................................................................................................... 53 3.4.8.6 REBOOT ROUTER .......................................................................................................................................... 54

4. APPENDIX.............................................................................................................................................................. 55

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1. Introduction Congratulations on becoming the owner of the AR4021 ADSL Ethernet bridge/router. Your LAN (local area network) will now be able to access the Internet using your high-speed ADSL connection. This User Guide will show you how to install and set up your AR4021 ADSL Bridge/Router. Features

Internal ADSL modem for high speed internet access 10/100Base-T Ethernet router to provide Internet connectivity to all

computers on your LAN Network Address Translation (NAT) and IP filtering functions to provide

firewall protection for your computers Network configuration through DHCP Configuration program you access via an HTML browser Menu-driven configuration tool via RS232C interface.

System Requirements

In order to use your AR4021 ADSL/Ethernet router, you must have the following: ADSL service up and running on your telephone line, with at least one public

Internet address for your LAN One or more computers each containing an Ethernet 10Base-T/100Base-T

network interface card (NIC) For system configuration using the supplied web-based program: a web

browser such as Internet Explorer v5.0 or later, or Netscape v4.7 or later For system configuration using the supplied menu-driven configuration tool: a

RS232C interface and terminal emulation program is required.

Comment: The document is written

with the assumption that an ISP has

provided the product to an existing

customer. However, the text uses the

phrase “your ISP” when referring the

customer to his ISP for assistance,

and when referring to

preconfiguration the ISP has

presumably performed. Search for

instances of “ISP” and substitute the

ISP’s actual name, or rewrite as

needed.

Customization Tip

The document is written with the assumption that an ISP has provided the product to an existing customer. However, the text uses the phrase “your ISP” when referring the customer to his ISP for assistance, and when referring to preconfiguration the ISP has presumably performed. Search for instances of “ISP” and substitute the ISP’s actual name, or rewrite as needed.

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2. Installation In addition to this document, your AR4021 should arrive with the following:

One standalone desktop AR4021 ADSL Ethernet Bridge/Router One power adapter and power cord One cross-over/straight Ethernet cable Three RJ-11 to RJ-11 telephone Cable

One splitter or low-pass filter

Front Panel The front panel contains lights called LEDs that indicate the status of the unit.

Label Color Function ALARM Yellow On: Major alarm occurs.

Off: Unit is functioning well. ADSL LINK*

green Flashes on/off during the training mode. On: ADSL link established and active

ADSL ACT

Green Flashes on/off during ADSL data transfer. Off: No ADSL activity.

LAN1-4 Green On: LAN link established and active Off: No LAN link Flashes during data transfer

PWR Green On: Unit is powered on Off: Unit is powered off

Rear Panel The rear panel contains the ports for the unit's data and power connections.

Label Function DSL RJ-11 connector: Connects the device to a telephone

jack using the supplied cable

On/Off Switches the unit on and off Power Connects to the supplied power converter cable 1-4 RJ-45 connector:.Connects the device to your PC's

Ethernet port, or to the uplink port on your LAN's hub, using the cable provided

RESET Reset unit’s configuration to manufacturer default

Connecting the Hardware You connect the device to the phone jack, the power outlet, and your computer or network.

Deleted: ¶

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WARNING

Before you begin, turn the power off for all devices. These include your computer(s), your LAN hub/switch (if applicable), and the AR4021.

Figure 1 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 1. Overview of Hardware Connections

Comment: Edit picture to match your

board’s connectors.

Customization Tip

Edit picture to match your board’s connectors.

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Step 1. Connect the ADSL cable and optional telephone.

Connect one end of the provided phone cable to the port labeled ADSL on the rear panel of the device. Connect the other end to your wall phone jack. You can attach a telephone line to the device. This is helpful when the ADSL line uses the only convenient wall phone jack. If desired, connect the telephone cable to the port labeled PHONE.

WARNING

Although you use the same type of cable, The ADSL and PHONE ports are not interchangeable. Do not route the ADSL connection through the PHONE port.

Step 2. Connect the Ethernet cable.

If you are connecting a LAN to the AR4021 ADSL/Ethernet router, attach one end of a provided Ethernet cable to

a regular hub port and the other to the Ethernet port on the AR4021.

Step 3. Attach the power connector.

Connect the AC power adapter to the PWR connector on the back of the device and plug in the adapter to a wall outlet or power strip.

Step 4. Turn on the AR4021 and power up your systems.

Press the Power switch on the back panel of the device to the ON position. Turn on and boot up your computer(s) and any LAN devices such as hubs or switches.

Step 5. Configure the AR4021 through the WEB interface

The detail step3 would be described in Chapter3. It would help you configure the AR4021 to meet your need.

Comment: This warning assumes

that the board contains an internal

filter on the POTS line. If an external

filter is used instead, document that

step here and remove this warning

(with an external filter, the ADSL and

PHONE ports are interchangeable).

Customization Tip

This warning assumes that the board contains an internal filter on the POTS line. If an external filter is used instead, document that step here and remove this warning (with an external filter, the ADSL and PHONE ports are interchangeable).

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Step 6. Save the configurations and Reboot.

To make the settings you made on AR4021 take effect.

3. Configuration

3.1 Setup Step 1: Connect the ATU-R and PC with a straight Ethernet cable.

Step 2: Power on the ATU-R.

Step 3: The default IP of the ATU-R is 192.168.1.1.

3.2 Establish The Connection Enter the IP address (default is 192.168.1.1) of ATU-R from the Web Browser..

A Dialogue Box will be popped up to request the user to login. (Figure 1)

Figure 1. Authentication

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Please enter the management username/password into the fields then click on the OK button (default username/password is admin/admin).

If the authentication passes, the home page “Device Info - Summery” will be displayed on the browser. (Figure 2)

Figure 2. ATU-R Home Page

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Device Info – Statistics – ADSL

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3.3 Quick Setup The system administrator can configure the ATU-R remotely or locally via a Web Browser. Network configuration need to be planned and decided before starting the configuration procedure.

Quick Setup allows system administrator to select the appropriate operation mode and configure the corresponding settings step by step to create a connection. The following five operation modes are supported :

PPP over Ethernet (PPPoE)

IP over ATM (IPoA)

Bridging

MAC Encapsulation Routing (MER)

PPP over ATM (PPPoA)

3.3.1 PPPover Ethernet (PPPoE) Configuration

Click on “Quick Setup” in the left frame, and follow the steps below to create a PPP over Ethernet (PPPoE) connection.

3.3.1.1 ATM PVC Configuration

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Figure 3. Quick Setup – ATM PVC Configuration

Give the VPI/VCI values. Please contact you ISP for the information.

Click on “Next” to go to next step.

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3.3.1.2 Connection Type and Encapsulation Mode

Figure 4. Quick Setup – Connection Type and Encapsulation Mode

Select “PPP over Ethernet (PPPoE)”, and the “Encapsulation Mode”. Please contact you ISP for the information.


3.3.1.3 PPP Username and Password

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Figure 5. Quick Setup – PPP Username and Password

Give “PPP Username”, “PPP Password”, and select “Authentication Method” (AUTO/PAP/CHAP). Please contact you ISP for the information.

The “Disconnect if no activity” function, if checked, will tear down the PPP link automatically if there is no outgoing packet for the programmed period of time which is set below.

AR4021 set up PPPoE connection automatically when there does not exist the PPPoE connection in it and user wants to send traffic to ISP

The users is able to assign some specific ATM PVC(s) to run PPPoE, when AR4021 is with multiple ATM PVC connection


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3.3.1.4 IGMP Multicast, WAN service, and QoS

Figure 6. Quick Setup – IGMP Multicast, WAN service, and QoS

Check to Enable/Disable IGMP Multicast, WAN Service, and QoS.

Use Advanced Setup/Quality of Service to assign priorities for the application. Click on “Next” to go to next step.

3.3.1.5 Device Setup

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Figure 7. Quick Setup – Device Setup

Give IP (LAN IP) and Subnet Mask to the device.

Select to Disable/Enable DHCP Server, use DHCP Server Relay, and configure related settings for that mode.

Ethernet configuration here is for selecting Speed (100 Mbps/10 Mbps/AUTO), Type (Full Duplex/Half Duplex/AUTO), and MTU.

Note that Network Address Translation function (NAT) is default enabled and is not showing on the page to prevent it from being disabled.


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3.3.1.6 WAN Setup – Summery

Figure 8. Quick Setup – WAN Setup – Summary

The last page gives a summary of previous steps. Make sure that the settings match the settings provided by ISP, and then click on “Save/Reboot” button to complete the configuration procedure.

3.3.2 IP over ATM (IPoA) Configuration

Click on “Quick Setup” in the left frame, and follow the steps below to create a IP over ATM (IPoA) connection.


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3.3.2.2 Connection Type

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Select “IP over ATM (IPoA)”, and the “Encapsulation Mode”. Please contact you ISP for the information.


3.3.2.3 WAN IP Settings

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Figure 11. Quick Setup– WAN IP Settings

WAN IP/Subnet Mask, default gateway, and DNS server settings. Please contact you ISP for the information.


3.3.2.4 NAT, IGMP Multicast, WAN service, and QoS

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Figure 12. Quick Setup – IPoA – NAT, IGMP Multicast, WAN service, and QoS

Check to Enable/Disable NAT and Firewall functions.

Use Advanced Setup/Firewall to assign filter rules. Check to Enable/Disable IGMP Multicast, WAN Service, and QoS.

Use Advanced Setup/Quality of Service to assign priorities for the application. Click on “Next” to go to next step.

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Give IP (LAN IP) and Subnet Mask to the device.

Select to Disable/Enable DHCP Server, use DHCP Server Relay, and configure related settings for that mode.

Ethernet configuration here is for selecting Speed (100 Mbps/10 Mbps/AUTO), Type (Full Duplex/Half Duplex/AUTO), and MTU.

Note that Network Address Translation function (NAT) is default enabled and is not showing on the page to prevent it from being disabled.


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3.3.2.6 WAN Setup – Summary

Figure 14 Quick Setup – WAN Setup – Summary


3.3.3 Bridge Configuration Click on “Quick Setup” in the left frame, and follow the steps below to create a Bridging connection.

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Select “Bridging”, and the “Encapsulation Mode”. Please contact you ISP for the information.


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3.3.3.3 WAN Service

Figure 17. Quick Setup – WAN Service

Give a service name and check the box to enable this wan service.


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Give LAN IP and Subnet Mask.


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Figure 19 Quick Setup – WAN Setup – Summary


3.3.4 MAC Encapsulation Routing (MER) Configuration

Click on “Quick Setup” in the left frame, and follow the steps below to create a MAC Encapsulation Routing (MER) connection.


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Select “MAC Encapsulation Routing (MER)”, and the “Encapsulation Mode”. Please contact you ISP for the information.


3.3.4.3 WAN IP Settings

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Figure 22. Quick Setup – WAN IP Settings

WAN IP/Subnet Mask, Default Gateway, and DNS Server can either be obtained automatically or set manually.


3.3.4.4 NAT, IGMP Multicast, WAN service, and QoS

Please refer to 1.3.2.4.

3.3.4.5 Device Setup Set device IP(LAN IP) and Subnet Mask, DHCP related items, and Ethernet configuration. Please refer to 1.3.1.5.


The last page gives a summary of previous steps. Make sure that the settings match the settings provided by ISP, and then click on “Save/Reboot” button to

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complete the configuration procedure. Please refer to 1.3.1.6.

3.3.5 PPP over ATM (PPPoA) Configuration

Click on “Quick Setup” in the left frame, and follow the steps below to create a PPP over ATM (PPPoA) connection. The following setting steps are all the same as PPP over ATM (PPPoE) steps.


Give the VPI/VCI values. Please refer to 3.3.1.1.

3.3.5.2 Connection Type Select “PPP over ATM (PPPoA)”. Please refer to 3.3.1.2

3.3.5.3 PPP Username and Password

Give “PPP Username”, “PPP Password”, and select “Authentication Method” (AUTO/PAP/CHAP). Please contact you ISP for the information. Please refer to 3.3.1.3.

3.3.5.4 IGMP Multicast, WAN service, and QoS Please refer to 3.3.1.4 3.3.5.5 Device Setup

Set device IP (LAN IP) and Subnet Mask, DHCP related items, and Ethernet configuration. Please refer to 3.3.1.5.


The last page gives a summary of previous steps. Make sure that the settings match the settings provided by ISP, and then click on “Save/Reboot” button to complete the configuration procedure. Please refer to 3.3.1.6.

3.4 Advanced Setup Advanced Setup allows system administrator to configure the following topics:

WAN

LAN

NAT

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Firewall

Quality of Service

Routing

DNS Server

DSL

3.4.1 WAN

Figure 23. Advanced Setup – WAN

This page shows the current existing WAN interfaces in the system. User can choose Add, Edit, or Remove to configure WAN interfaces. For detail about Add and Edit procedure, please refer to 3.3 Quick Setup.

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3.4.2 LAN

Please refer to 3.3.1.5.

3.4.3 Firewall

Two functions are supported in Firewall, Outgoing IP Filtering and MAC Filtering.

Firewall – Outgoing IP Filtering Setup By default, all outgoing IP traffic from LAN is allowed, but some IP traffic can be blocked by setting up filters. Choose Add or Remove to configure outgoing IP filters.

Figure 24. Advanced Setup – Firewall – Outgoing IP Filtering Setup

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Click on Add to create a filter to identify the outgoing IP traffic by specifying at least one condition below. If multiple conditions are specified, all of them take effect

Figure 25. Advanced Setup – Firewall – Add new Outgoing IP Filter

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Firewall – MAC Filtering Setup MAC Filtering is only effective on ATM PVCs configured in Bridge mode. FORWARD means that all MAC layer frames will be FORWARDED except those matching with any of the specified rules in the following table. BLOCKED means that all MAC layer frames will be BLOCKED except those matching with any of the specified rules in the following table.

Figure 26. Advanced Setup – Firewall – MAC Filtering Setup

Click on Add to create a filter to identify the MAC layer frames by specifying at least one condition below. If multiple conditions are specified, all of them take effect.

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Figure 27. Advanced Setup – Firewall – Add new MAC Filter

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3.4.4 Quality of Service

Figure 28. Advanced Setup – Quality of Service

Click on Add to create a class to identify the IP traffic by specifying at least one condition below. If multiple conditions are specified, all of them take effect.

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Figure 29. Advanced Setup – Add new QoS rule

3.4.5 Routing

Three routing information related settings are included.

Routing – Default Gateway If Enable Automatic Assigned Default Gateway checkbox is selected, this router will accept the first received default gateway assignment from one of the PPPoA, PPPoE or MER/DHCP enabled PVC(s). If the checkbox is not selected, enter the static default gateway AND/OR a WAN interface. Click 'Apply' button to save it.

NOTE: If changing the Automatic Assigned Default Gateway from unselected to selected, You must reboot the router to get the automatic assigned default gateway.

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Figure 30. Advanced Setup – Routing – Default Gateway

Routing – Static Route

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Figure 31. Advanced Setup – Routing – Static Route

Click on Add to create a new Static Route. Enter the destination network address, subnet mask, gateway AND/OR available WAN interface then click "Apply" to add the entry to the routing table

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Figure 32. Advanced Setup – Routing – Add new Static Route

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Routing – RIP

Figure 33. Advanced Setup – Routing – RIP

To activate RIP for the device, select the 'Enabled' radio button for Global RIP Mode. To configure an individual interface, select the desired RIP version and operation, followed by placing a check in the 'Enabled' checkbox for the interface. Click the 'Apply' button to save the configuration, and to start or stop RIP based on the Global RIP mode selected

3.4.6 DNS Server

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Figure 33. Advanced Setup – DNS Server

If Enable Automatic Assigned DNS checkbox is selected, this router will accept the first received DNS assignment from one of the PPPoA, PPPoE or MER/DHCP enabled PVC(s) during the connection establishment. If the checkbox is not selected, enter the primary and optional secondary DNS server IP addresses. Click 'Apply' button to save it.

NOTE: If changing from unselected Automatic Assigned DNS to selected Automatic Assigned DNS, You must reboot the router to get the automatic assigned DNS addresses.

3.4.7 Diagnostics This page allows users to test the Ether port connection, DSL port connection, connection to the Internet Service Provider. If a test displays a fail status, click “Return Diagnostic Tests” at the bottom of the page to make sure the fail status is consistent. If

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the test continues to fail, click “Help” to follow the troubleshooting procedure.

3.4.8 Management

The system administrator can do the following functions to manage the configurations, events, SNMP information, user accounts, and software update of the ATU-R.

Settings

System Log

SNMP Agent

Access Control

Update Software

Reboot Router

3.4.8.1 Settings

System Administrator can do the ATUR settings backup, update, and restore here. The settings can be saved from ATUR to PC. The saved setting file can also be loaded from PC to ATUR. These 2 functions can help the system administrator to manage large amount of ATURs efficiently. Restore Default would set the ATUR with the factory default configuration.

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Click “Backup Settings” to save the settings to a file on the Local PC.

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Click “Browse” to locate the setting file saved on the Local PC. Then, “Update Settings” would

apply the settings to the ATU-R according to the setting file.

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Click “Restore Default Settings” to restore the factory default settings. This would be helpful when

the settings mass up.

3.4.8.2 System Log

This allows System Administrator to view the System Log and configure the System Log options.

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Configure the System Log option. There’re 8 levels of Log Level and Display Level, Emergency,

Alert, Critical, Error, Warning, Notice, Informational, Debugging. The Log Level implies that what

log level is applied to ATU-R to do the log. The Display Level would just show the users the log

message that they want to know. As a result, Display Level was just a subset of the retrieved from

the total log message which was logged according to the setting of the Log Level. If the “Mode” is

set to “Remote” or “Both”, the log messages would be sent to the specified UDP port of the

specified log server.

3.4.8.3 SNMP Agent

System Administrator could enable or disable the embedded SNMP Agent here. SNMP Agent would allow a management application to retrieve statistics and status from ATU-R.

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Enable or Disable the SNMP Agent. The detail function of the The Read Community, Set

Community, System Name, System Location, System Contact, Trap Manager IP would not be

described here.

3.4.8.4 Access Control

The ATU-R browser management tool is protected by a security password. System Administrator could set the password for three accounts: admin, support, and user. Also, an Access Control list can be defined in “IP Addresses”. User from the allowed IP address can only access the ATU-R. The “Services” list the service daemons which can be enabled for LAN side, WAN side, or both. It supports the ACL capability which can assign at least 16 IP addresses for management, and AR4021 can be configured and managed by ACL IP addresses only.

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Please define the passwords for the 3 accounts here.

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Click “Add” to add an IP address to the Access Control List. Mark the Remove option of the

specified IP address, then click “Remove” to remove the IP address from the ACL.

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Mark the Enable of the WAN and LAN for each service. FTP, HTTP, ICMP, SNMP, SSH, TELNET,

TFTP are supported in the ATU-R.

3.4.8.5 Update Software

The new released software could be update from the Local PC side. Click the “Browse” to locate the new software image file in the PC. Then, “Update Software” to proceed the software update.

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3.4.8.6 Reboot Router

Click “Reboot Router” to reboot the ATU-R. The ATU-R would automatically save the configuration before reboot, so that modified settings would take effect after reboot.

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4. Appendix ATM Subsystem • Supports up to 64 Virtual Channel Connections (VCCs) and all VCCs works well

concurrently and independently. • Support multiple ATM PVC, and all PVC works well concurrently and independently. • Supports UBR, CBR, and VBR service classes • Provides ATM layer functionality • Provides adaptation layer (AAL5) functionality

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• Supports PPP encapsulation over ATM (PPPoA) and PPP over Ethernet (PPPoE) – PPPoA : Support encapsulation methods specified in RFC2364 (PPP over AAL5). • Supports IP over ATM (IPoA)

• Supports for F5 ,AIS, RDI, and loopback cells

• The format of data packet between ATU-C and AR4021 support ATM cell format specified in ITU-T Rec. I.361. • Supports ATM Forum UNI V3.1 PVC • ATM Cell Forwarding Rate : Supports at least 6.144 Mbit/s and 640 kbit/s for downstream and upstream . • ATM CBR QoS: Supports ATM CBR service for each PVC and the configurable parameter include Peak Cell Rate (PCR) and CDVT. ADSL Subsystem • Supports fast and interleave latency •The ADSL line speed is adaptive according to the line conditions.

• Supports the following types of line coding:

– DMT: T1.413, G.992.1, G.992.2 with auto-detection

• Handshake Protocol supports the handshake protocol defined in ITU-T Rec.G.994.1.

Data Subsystem • Support multiple users/hosts from four Ethernet ports. • Supports up to 1000 hosts. • Support the following protocols:

– IP (RFC791)

– User Datagram Protocol (UDP) – Transmission Control Protocol (TCP) – Address Resolution Protocol (ARP,RFC826) – Reverse Address Resolution Protocol (RARP) – Internet Control Message Protocol (ICMP) – Internet Group Management Protocol (IGMP) –Support multi-user at least 128 PCs sharing via Ethernet LAN.

Bridging Functionality • Supports up to 1000 hosts • Transparent bridging as specified in IEEE 802.1D

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• Bridged PDU encapsulation (per RFC 2684) • MAC-level filter to accept/deny packets based on rules applicable at the MAC level Routing Functionality • Network Address Translation (NAT)

– Provides up to 1024 NAT translation sessions – Supports most major applications including: FTP, SNMP, ICMP, H.323, L2TP, Quake,

MRC, ICQ, CUSeeMe – TCP/UDP port forwarding function – The address translation function support RFC2663. – Support the NAT ALG function specified in RFC3235, and including H.323(Microsoft

NetMeeting), IPSec, HTTP, FTP, ICMP, SMTP, POP3, and Telnet applications.

• IP filtering and raw filtering • Point-to-Point Protocol (PPP)

– PPP over ATM (only single-link PPP per VC) – PPP over Ethernet encapsulation over the virtual interface (per RFC 2516) – AUTO,PAP or CHAP for user authentication (RFC1334) -- Support automatic connection setup and tear down functions.

• Routing Information Protocol (RIP) v1 and v2

• Embedded firewall prevents DOS, IP spoofing, and other common types of attacks • User-configurable IP- and MAC-level packet filtering to accept/deny packets based on

layer 3 or layer 2 rules • Routed packet encapsulation (per RFC 2684) • Static routing Supported Client/Server Applications • TFTP (Trivial File Transfer Protocol) client/server.

• DHCP client and server

–Support the DHCP server, relay, and client functions specified in RFC2131, RFC2132 The DHCP server draws from a defined pool of IP addresses and “leases” them for a specified amount of time to your computers when they request an Internet session. It monitors, collects, and redistributes the addresses as needed. • Telnet server • HTTP server • FTP server, client

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Network Management • SNMP v1 over DSL or Ethernet for access to the MIB-II (router only) • CLI (Command Line Interface) via serial interface or Telnet over Ethernet or DSL • Web-based Graphical User Interface (GUI) enabling end-user device configuration via

HTTP • Update of boot image or configuration data over TFTP/FTP Spectral Mask The transmitter signal comply with the Power Spectrum Density (PSD) mask specified in Figure A-3 of Annex A in ITU-T Rec. G.992.1. The average PSD within the used pass-band is less than -38 dBm/Hz and pass-band ripple is less than +3.5 dB. Embedded Operations Channel (EOC) and ADSL Overhead Control Channel (AOC) The EOC and AOC is supported as defined in ITU-T Rec. G.992.1 and ITU-T Rec. G.997.1.

Capability for Category I

The capability for Category I of ITU-T Rec. G.992.1 is supported.

Dying Gasp

AR4021 has the ability to detect the defect when the electrical supply power drops to a level equal to or

below minimum power level required to ensure proper operation of the AR4021. In this case, the AR4021 will

provide a Dying Gasp message defined in ITU-T Rec. G.992.1 to ATU-C as a LPR indicator.

Ethernet

AR4021 provides four 10/100 Base-T auto-sensing and half/full duplex configurable Ethernet interfaces and

the Ethernet interfaces for AR4021 is able to operate well simultaneously. The 10/100 Base-T Ethernet

interface complies with the IEEE 802.3/IEEE 802.3u, respectively. AR4021 supports multi-user at least 128

PCs sharing via Ethernet LAN.

Configuration interface AR4021 provides a RS232C interface for configuration by menu-driven operation and a Ethernet interface for configuration by Web-based operation. SNMP agent function:

Support the SNMP agent function specified in RFC1157 and can be enabled/disabled for the LAN and WAN via configuration, and can be able to configure SNMP read/write

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communities. IP ToS function: •. Support the IP ToS function specified in RFC1349. IGMP proxy function AR4021 supports the IGMP proxy function specified in IETF draft-ietf- magma-igmp- proxy-01. Password length: Support the capability to configure ATU-Re password, and the password length is up to 22 characters. Physical Interfaces • 1 RJ-11 port for ADSL connection

• 4 RJ-45 port for 10/100 Mbps Ethernet connection

Operating Environment

• Operating temperature: 0 ~ 40 ℃

• Operating Humidity: 0 ~ 90 % Power • Power consumption: 7.8 Watts max. • In case of the input power failure, the ATU-R will be able to restart and well operate automatically after the input power is restored

tecomAR4021

Documents

Transcript of tecomAR4021