TP Link TD854W User Guide

TD854W

150Mbps Wireless N ADSL2+ Modem Router

Rev: 1.0.0 1910010472

COPYRIGHT & TRADEMARKS

Specifications are subject to change without notice. is a registered trademark of TP-LINK TECHNOLOGIES CO., LTD. Other brands and product names are trademarks or registered trademarks of their respective holders.

No part of the specifications may be reproduced in any form or by any means or used to make any derivative such as translation, transformation, or adaptation without permission from TP-LINK TECHNOLOGIES CO., LTD. Copyright © 2011 TP-LINK TECHNOLOGIES CO., LTD. All rights reserved.

http://www.tp-link.com

FCC STATEMENT

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.

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

1 This device may not cause harmful interference.

2 This device must accept any interference received, including interference that may cause undesired operation.

Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

Note: The manufacturer is not responsible for any radio or tv interference caused by unauthorized modifications to this equipment. Such modifications could void the user’s authority to operate the equipment.

FCC RF Radiation Exposure Statement

This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. This device and its antenna must not be co-located or operating in conjunction with any other antenna or transmitter.

“To comply with FCC RF exposure compliance requirements, this grant is applicable to only

Mobile Configurations. The antennas used for this transmitter must be installed to provide a

separation distance of at least 20 cm from all persons and must not be co-located or operating in

conjunction with any other antenna or transmitter.”

CE Mark Warning

This is a class B product. In a domestic environment, this product may cause radio interference, in

which case the user may be required to take adequate measures.

National restrictions

This device is intended for home and office use in all EU countries (and other countries following

the EU directive 1999/5/EC) without any limitation except for the countries mentioned below:

	Country	Restriction	Reason/remark
	Bulgaria	None	General authorization required for outdoor use
			and public service
		Outdoor use limited to	Military Radiolocation use. Refarming of the 2.4
			GHz band has been ongoing in recent years to
	France	10 mW e.i.r.p. within the
			allow current relaxed regulation. Full
		band 2454-2483.5 MHz	implementation planned 2012
	Italy	None	If used outside of own premises, general
			authorization is required
	Luxembourg	None	General authorization required for network and
			service supply(not for spectrum)
			This subsection does not apply for the
	Norway	Implemented	geographical area within a radius of 20 km from
			the centre of Ny-Ålesund
	Russian	None	Only for indoor applications
	Federation

Note: Please don’t use the product outdoors in France.

TP-LINK TECHNOLOGIES CO., LTD

DECLARATION OF CONFORMITY

For the following equipment:

Product Description: 150Mbps Wireless N ADSL2+ Modem Router

Model No.: TD854W

Trademark: TP-LINK

We declare under our own responsibility that the above products satisfy all the technical regulations applicable to the product within the scope of Council Directives:

Directives 1999/5/EC

The above product is in conformity with the following standards or other normative documents

ETSI EN 300 328 V1.7.1: 2006

ETSI EN 301 489-1 V1.8.1:2008& ETSI EN 301 489-17 V2.1.1:2009

EN60950-1:2006

Recommendation 1999/519/EC

EN62311:2008

Directives 2004/108/EC

The above product is in conformity with the following standards or other normative documents

EN 55022:2006 +A1:2007

EN 55024:1998+A1:2001+A2:2003

EN 61000-3-2:2006

EN 61000-3-3:1995+A1:2001+A2:2005

Directives 2006/95/EC

The above product is in conformity with the following standards or other normative documents

EN60950-1:2006

Directive ErP 2009/125/EC

Audio/Video, information and communication technology equipmentEnvironmentally conscious design

EN62075:2008

Person is responsible for marking this declaration:

Yang Hongliang

Product Manager of International Business

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		CONTENTS
Package Contents......................................................................................................			1
Chapter 1.	Introduction...........................................................................................		2
1.1	Product Overview ..................................................................................		2
1.2	Main Features........................................................................................		2
1.3	Conventions...........................................................................................		3
Chapter 2.	Hardware Installation ...........................................................................		4
2.1	The Front Panel.....................................................................................		4
2.2	The Back Panel .....................................................................................		5
2.3	The Side Panel......................................................................................		6
2.4	Installation Environment ........................................................................		6
2.5	Connecting the Modem Router..............................................................		6
Chapter 3.	Quick Installation Guide.......................................................................		9
3.1	Configure PC.........................................................................................		9
3.2	Login....................................................................................................		12
Chapter 4.	Software Configuration......................................................................		16
4.1	Status	..................................................................................................	16
	4.1.1	Device Info ................................................................................................	16
	4.1.2	Statistics....................................................................................................	18
	4.1.3	Wizard .......................................................................................................	19
4.2	Setup...................................................................................................		19
	4.2.1	WAN..........................................................................................................	19
	4.2.2	LAN............................................................................................................	23
	4.2.3	WLAN........................................................................................................	29
4.3	Advanced.............................................................................................		44
	4.3.1	Route.........................................................................................................	44
	4.3.2	NAT ...........................................................................................................	46
	4.3.3	QoS ...........................................................................................................	52
	4.3.4	CWMP.......................................................................................................	57
	4.3.5	Port mapping.............................................................................................	59
	4.3.6	Others........................................................................................................	61
4.4	Service ................................................................................................		61
	4.4.1	IGMP Proxy...............................................................................................	61

	4.4.2	UPnP.........................................................................................................	62
	4.4.3	SNMP........................................................................................................	63
	4.4.4	DNS...........................................................................................................	64
	4.4.5	DDNS ........................................................................................................	64
4.5	Firewall ................................................................................................		66
	4.5.1	MAC Filter .................................................................................................	66
	4.5.2	IP/Port Filter ..............................................................................................	67
	4.5.3	URL Filter ..................................................................................................	69
	4.5.4	ACL............................................................................................................	70
4.6	Maintenance........................................................................................		73
	4.6.1	Update.......................................................................................................	73
	4.6.2	Password...................................................................................................	76
	4.6.3	System Restart..........................................................................................	76
	4.6.4	Time...........................................................................................................	77
	4.6.5	Log.............................................................................................................	78
	4.6.6	Diagnostic..................................................................................................	79
Appendix A: Specifications ....................................................................................			84
Appendix B: Troubleshooting ................................................................................			85
Appendix C: Technical Support .............................................................................			94

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Package Contents

The following contents should be found in your package:

One TD854W 150Mbps Wireless N ADSL2+ Modem Router

One Power Adapter for TD854W 150Mbps Wireless N ADSL2+ Modem Router

Quick Installation Guide

One RJ45 cable

Two RJ11 cables

One ADSL splitter

One Resource CD, which includes this User Guide

 Note:

Make sure that the package contains the above items. If any of the listed items are damaged or

missing, please contact your distributor.

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Chapter 1.Introduction

Thank you for choosing the TD854W 150Mbps Wireless N ADSL2+ Modem Router.

1.1 Product Overview

The device is designed to provide a simple and cost-effective ADSL Internet connection for a private Ethernet or IEEE 802.11n/ IEEE 802.11g/ IEEE 802.11b wireless network.

The TD854W connects to an Ethernet LAN or computers via standard Ethernet ports. The ADSL connection is made using ordinary telephone line with standard connectors. Multiple workstations can be networked and connected to the Internet using a single Wide Area Network (WAN) interface and single global IP address. The advanced security enhancements, MAC Filter, IP/Port Filter, URL Filter and ACL can help to protect your network from potentially devastating intrusions by malicious agents from the outside of your network.

Wizard of the Web-based Utility is supplied and friendly help messages are provided for the configuration. Network and Router management is done through the Web-based Utility which can be accessed through local Ethernet using any web browser.

ADSL

The TD854W supports full-rate ADSL2+ connectivity conforming to the ITU and ANSI specifications. In addition to the basic DMT physical layer functions, the ADSL2+ PHY supports dual latency ADSL2+ framing (fast and interleaved) and the I.432 ATM Physical Layer.

Wireless

In the most attentive wireless security, the Router provides multiple protection measures. It can be set to turn off the wireless network name (SSID) broadcast so that only stations that have the SSID can be connected. The Router provides wireless LAN 64/128-bit WEP encryption security, WPA-PSK/WPA2-PSK authentication, as well as TKIP/AES encryption security.

1.2 Main Features

Wireless AP, Router, 4 Port Switch and Firewall

Support ITU-T G.992.1 (G.dmt), ANSI T1.413, G.992.2 (G.Lite), ADSL2 and ADSL2+

Support 802.11n, compatible with 802.11b and 802.11g

Up to 54 Mbps wireless operation rate

64/128 bits WEP for security

WPA and WPA2 support

4 10/100MBase-T Ethernet interface (LAN)

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RFC-1483/2684 LLC/VC-Mux bridge/route mode

RFC-1577 Classical IP over ATM

RFC-2516 PPPoE

RFC-2364 PPPoA

ITU-T 1.610 F4/F5 OAM send and receive loop-back

802.1d Spanning-Tree Protocol

DHCP Client/Server/Relay

NAT

RIP v1/v2

DNS Relay Agent

Support DMZ, virtual server, ALG

IGMP Proxy/Snooping

Protection against Denial of Service attack

IP Packet filtering

MAC filtering

URL filtering

IP QoS

Dynamic DNS

UPnP support

System log support, can record the state of the router

Remote management

SNMP v1/v2/Trap

Firmware upgrade through FTP, TFTP and HTTP

Configuration backup/restore

Diagnostic tools

1.3 Conventions

The Router or device mentioned in this User Guide stands for TD854W without any explanations.

Parameters provided in the pictures are just references for setting up the product, which may differ from the actual situation.

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Chapter 2.Hardware Installation

2.1 The Front Panel

Figure 2-1

The LEDs locate on the front panel. They indicate the device’s working status. For details, please refer to Error! Reference source not found..

LED Explanation

	Name	Status	Indication
		On	The modem router is powered on.
	Power
		Off	The modem router is off. Please ensure that the power adapter is
			connected correctly.
		On	ADSL line is synchronized and ready to use.
	ADSL	Flash	The ADSL negotiation is in progress.
		Off	ADSL synchronization fails. Please refer to Note 1 for
			troubleshooting.
		On	The network is available with a successful Internet connection.
	Internet	Flash	There is data being transmitted or received via the Internet.
			There is no successful Internet connection or the modem router is
		Off	operating in Bridge mode. Please refer to Note 2 for
			troubleshooting.
		On	Wireless is enabled but no data is being transmitted.
	WLAN	Flash	The modem router is sending or receiving data over the wireless
			network.
		Off	Wireless function is disabled.
		On	There is a device connected to this LAN port.
	1,2,3,4 (LAN)	Flash	The modem router is sending or receiving data over this LAN
			port.
		Off	There is no device connected to this LAN port.
		On	A wireless device has been successfully added to the network by
			QSS function.
			QSS handshaking is in process and will continue for about 2
	QSS	Flash	minutes. Please press the QSS button on other wireless devices
			that you want to add to the network while the LED is flashing.
			The QSS function is disabled or the wireless device fails to be
		Off	added to the network in 2 minutes after QSS function is enabled.
			Please refer to 4.2.3.6 QSS for more information.

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 Note:

1.If the ADSL LED is off, please check your Internet connection first. Refer to 2.4 Connecting the Modem Router for more information about how to make Internet connection correctly. If you have already made a right connection, please contact your ISP to make sure if your Internet service is available now.

2.If the Internet LED is off, please check your ADSL LED first. If your ADSL LED is also off, please refer to Note 1. If your ADSL LED is GREEN ON, please check your Internet configuration. You may need to check this part of information with your ISP and make sure everything have been input correctly. Refer to 4.1.1 Device Info and 4.2.1 WAN for more information.

2.2 The Back Panel

Figure 2-2

ADSL: Through the port, you can connect the router with the telephone. Or you can connect them by an external separate splitter. For details, please refer to 2.4.

RESET: There are two ways to reset the Router's factory defaults.

1, 2, 3, 4 (LAN): Through the port, you can connect the Router to your PC or the other Ethernet network devices.

Method one: With the Router powered on, use a pin to press and hold the Reset button for at least 5 seconds. And the Router will reboot to its factory default settings.

Method two: Restore the default setting from “Maintenance-SysRestart” of the Router's Web-based Utility.

POWER: The Power plug is where you will connect the power adapter.

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2.3 The Side Panel

Figure 2-3

WLAN: Press this button to enable or disable the Wireless LAN interface.

QSS: This button is used for QSS setting. For detailed information, please refer to 4.2.3.6 QSS.

ON/OFF: The switch for the power.

2.4 Installation Environment

The Product should not be located where it will be exposed to moisture or excessive heat.

Place the Router in a location where it can be connected to the various devices as well as to a power source.

Make sure the cables and power cord are safely placed out of the way so they do not create a tripping hazard.

The Router can be placed on a shelf or desktop.

Keep away from the strong electromagnetic radiation and the device of electromagnetic sensitive.

2.5 Connecting the Modem Router

Back to LED Explanation

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Before installing the device, please make sure your broadband service provided by your ISP is available. If there is any problem, please contact your ISP. Before cable connection, cut off the power supply and keep your hands dry. You can follow the steps below to install it.

Step 1: Connect the ADSL Line.

Method one: Plug one end of the twisted-pair ADSL cable into the ADSL LINE port on the rear panel of TD854W, and insert the other end into the wall socket.

Method two You can use a separate splitter. External splitter can divide the data and voice, and then you can access the Internet and make calls at the same time. The external splitter has three ports:

•LINE: Connect to the wall jack

•PHONE: Connect to the phone sets

•MODEM: Connect to the ADSL LINE port of TD854W

Plug one end of the twisted-pair ADSL cable into the ADSL LINE port on the rear panel of TD854W. Connect the other end to the MODEM port of the external splitter.

Step 2: Connect the Ethernet cable. Attach one end of a network cable to your computer’s Ethernet port or a regular hub/switch port, and the other end to the LAN port on the TD854W.

Step 3: Power on the computers and LAN devices.

Step 4: Attach the power adapter. Connect the power adapter to the power connector on the rear of the device and plug in the adapter to a electrical outlet or power extension. The electrical outlet shall be installed near the device and shall be easily accessible.

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Figure 2-4

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Chapter 3.Quick Installation Guide

3.1 Configure PC

After you directly connect your PC to the TD854W or connect your adapter to a Hub/Switch which has connected to the Router, you need to configure your PC’s IP address. Follow the steps below to configure it.

Step 1: Click the Start menu on your desktop, right click My Network Places, and then select

Properties (shown in Figure 3-1).

Figure 3-1

Step 2: Right click Local Area Connection (LAN), and then select Properties.

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Figure 3-2

Step 3: Select General tab, highlight Internet Protocol (TCP/IP), and then click the Properties button.

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Figure 3-3

Step 4: Configure the IP address as Figure 3-4 shows. After that, click OK.

Figure 3-4

 Note:

You can configure the PC to get an IP address automatically, select “Obtain an IP address automatically” and “Obtain DNS server address automatically” in the screen above.

Now, you can run the Ping command in the command prompt to verify the network connection. Please click the Start menu on your desktop, select run tab, type cmd or command in the field and press Enter. Type ping 192.168.1.1 on the next screen, and then press Enter.

If the result displayed is similar to the screen below, the connection between your PC and the Router has been established.

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Figure 3-5

If the result displayed is similar to the screen shown below, it means that your PC has not connected to the Router.

Figure 3-6

You can check it follow the steps below:

1)Is the connection between your PC and the Router correct?

The LEDs of LAN port which you link to the device and the LEDs on your PC's adapter should be lit.

2)Is the TCP/IP configuration for your PC correct?

If the Router's IP address is 192.168.1.1, your PC's IP address must be within the range of 192.168.1.2 ~ 192.168.1.254.

3.2 Login

Once your host PC is properly configured, please proceed as follows to use the Web-based Utility: Start your web browser and type the private IP address of the Router in the URL field: 192.168.1.1.

After that, you will see the screen shown below, enter the default User name (admin) and the default Password (admin), and then click OK to access to the Web-based Utility of the Router.

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Figure 3-7

Step 1: Select the Wizard tab and you will see the next screen.

Figure 3-8

Step 2: Configure the Router with the information provided by your ISP, including VPI/VCI,

Connection Mode and the following parameters. Take PPPoE for example, you need to enter Username, Password and DNS parameters. All these information are provided by your ISP. After that, click the next button to continue.

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Figure 3-9

Step 3: Choose to enable your wireless network or not. If it’s enabled, you need to createa name for your wireless network. It’s recommended that the name be unique and easy to remember. You can also keep default without the device being affected. Select an

Encryption and Authentication Mode for the security of your wireless network, and then enter the key in the corresponding field. After that, click the next button to continue.

Figure 3-10

 Note:

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If the WLAN is enabled, the wireless function will be available even without the external antenna because of an additional printed antenna. To adopt the wireless security protection measures, please refer to Section 4.2.3.3.

Step 4: Click the Apply Changes button to finish the wizard.

Figure 3-11

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Chapter 4.Software Configuration

This User Guide recommends using the “Quick Installation Guide” for first-time installation. For advanced users, if you want to know more about this device and make use of its functions adequately, maybe you will get help from this chapter to configure the advanced settings through the Web-based Utility.

After your successful login, you can configure and manage the device. There are main menus on the top of the Web-based Utility; submenus will be available after you click one of the main menus. On the center of the Web-based Utility, there are the detailed configurations or status information. To apply any settings you have altered on the page, please click the SAVE button.

4.1 Status

Choose “Status”, you can see the next submenus: Device Info and Statistics. Click any of them, and you will be able to configure the corresponding function.

Click any of them, and you will be able to view the corresponding information.

4.1.1 Device Info

4.1.1.1 Device Info

Back to LED Explanation

Choose “Status→Device Info→Device Info” menu, and you will be able to view the device information, including System, DSL, LAN, DNS, and WAN. The information will vary depending on the settings of the Router.

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Figure 4-1

Click the Refresh button to refresh immediately.

4.1.1.2 ADSL

Choose “Status→Device Info→ADSL” menu, and you will be able to view the ADSL

configuration.

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Figure 4-2

Click the Retrain button to retrain the information again.

Click the Refresh button to refresh immediately.

4.1.2 Statistics

Choose “Status→Statistics” menu, and you will be able to view the network traffic.

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Figure 4-3

Click the Refresh button to refresh immediately.

4.1.3 Wizard

Please refer to " 3.2: Login".

4.2 Setup

Choose “Setup”, you can see the next submenus: WAN, LAN and WLAN.

Click any of them, and you will be able to configure the corresponding function.

4.2.1 WAN

4.2.1.1 WAN

Back to LED Explanation Choose “Setup→WAN→WAN” menu, you can configure the parameters for WAN in the next

screen (shown in Figure 4-4).

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Figure 4-4

Current ATM VC Table: ATM settings are used to connect to your ISP. Your ISP provides VPI (Virtual Path Identifier), VCI (Virtual Channel Identifier) settings to you. In this Device, there is one VC configured by default. You can totally setup 8 VCs on different encapsulations, if you apply 8 different virtual circuits from your ISP. You need to activate the VC to take effect.

: Click this icon to enter the VC modification page. Besides, some advanced settings can be configured there.

: Click this icon to delete the corresponding VC.

VPI: Identifies the virtual path between endpoints in an ATM network. The valid range is from 0 to 255. Please input the value provided by your ISP.

VCI: Identifies the virtual channel endpoints in an ATM network. The valid range is from 32 to 65535 (1 to 31 is reserved for well-known protocols). Please input the value provided by your ISP.

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Encapsulation: Specifies the type of Multiplexing, either LLC or VC-Mux. Please note that VC-Mux is not available for IPoA channel mode.

Channel Mode: There are six channel modes, 1483 Bridged, 1483 MER, PPPoE, PPPoA, 1483 Routed and IPoA. Please choose the mode that you want to use.

Enable NAPT: Choose to enable the NAPT function or not.

Enable IGMP: Choose to enable the IGMP function or not.

PPP Settings: These parameters are only available for PPPoE and PPPoA channel mode.

User Name: Enter your user name for your PPPoE/PPPoA connection.

Password: Enter your password for your PPPoE/PPPoA connection.

Type: Select Continuous, Connect on Demand or Manually for the network connection. Continuous means the Internet connection will always keep on. Connect on demand is dependent on the traffic. If it’s idle (there is no traffic) for a pre-specified period of time), the connection will tear down automatically. And once there is traffic send or receive, the connection will be automatically on. Manually means you have to manually connect or disconnect your Internet by clicking the Connect or Disconnect button at the bottom of this page.

Idle Time (min): Specifies the idle time for Connect on Demand type.

WAN IP Settings: These parameters are only available for 1483 MER and 1483 Routed channel mode. Please note that for1483 Routed mode, DHCP is not available.

Type: Selects to use Fixed IP or DHCP. If Fixed IP is selected, then you have to fill the following parameters, including Local IP Address, Remote IP Address, and Netmask. Otherwise, these parameters will not be available.

Local IP Address: The IP address of the router on the PVC channel.

Remote IP Address: The gateway’s IP address of the router on the PVC channel.

Netmask: The subnet mask of the router on the PVC channel.

Connect/Disconnect: When there is a VC using PPPoE/PPPoA channel and Manually type, you need to click this button to connect/disconnect the network.

Add: Click this button to add a VC. First fill the parameters above and then click this button, thus your new VC will be added to the Current ATM VC Table.

Modify: Click this button to modify your existed VC. First choose the desired VC and modify the parameters, and then click this button, thus your existed VC will be modified.

Delete: Click this button to delete your existed VC. First choose the desired VC, and then click this button, thus your existed VC will be deleted.

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Undo: Click this button to abandon your operation.

Refresh: Click this button to refresh the ATM VC table.

 Note:

After configuration, you need to click the Save button on the left panel to make your configuration take effect.

4.2.1.2 ATM

Choose “Setup→WAN→ATM” menu, you can configure the parameters for the ATM of your ADSL Router in the next screen (shown in Figure 4-4). Here you may change the setting for QoS, PCR, CDVT, SCR and MBS.

Figure 4-5

QoS: Select the Quality of Service types for the Virtual Circuit, including UBR (Unspecified Bit Rate), CBR (Constant Bit Rate), and nrt-VBR (Variable Bit Rate) and rt-VBR. Please note that the selection of QoS type will lead to the availability of the following parameters, including PCR (Peak Cell Rate), CDVT (Cell Delay Variation Tolerance), SCR (Sustained Cell Rate) and MBS (Maximum Burst Size). Please configure them according to your needs.

Click Apply Changes to save your configuration.

 Note:

After saving your configuration, you need to click the Save button on the left panel to make your configuration take effect.

4.2.1.3 ADSL

Choose “Setup→WAN→ADSL” menu, you can configure some advanced parameters for your

ADSL Router in the next screen (shown in Figure 4-4).

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Figure 4-6

After configuration, click Apply Changes button to save your changes.

 Note:

After saving your configuration, you need to click the Save button on the left panel to make your configuration take effect.

4.2.2 LAN

4.2.2.1 LAN

Choose “Setup→LAN→LAN” menu, and you will see the LAN Interface Setup screen (shown in Figure 4-7). Here you can change IP address, subnet mask and other parameters for LAN interface.

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Figure 4-7

Interface Name: Displays the name of the LAN interface for the device.

IP Address: The Router’s local IP Address. You can access to the Web-based Utility via the IP Address, the default value is 192.168.1.1. You can change the IP address if needed. The LAN IP address is private to your internal network and cannot be seen on the Internet.

Subnet Mask: The subnet mask of the ADSL Router’s LAN interface. The default value is 255.255.255.0.

Secondary IP: If you enable the “Secondary IP”, you should configure another IP address and subnet mask for the LAN interface.

IGMP Snooping: You can enable or disable the IGMP Snooping function according to your needs.

MAC Address Control: The router supports the MAC address control on Ethernet port. Select the LAN interface on which you want to run MAC Address Control. Click the Apply Changes button to make the configuration take effect. For example, if you enable the MAC address control on “LAN1”, then the traffic from interface “LAN1” will be flowed only when its MAC address matches the Current Allowed MAC Address Table, otherwise the traffic will be dropped by the router.

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