D-Link DSL-6740U Router Manual PDF (Setup & Configuration Guide)

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DSL-6740U

VDSL/Ethernet Router with Wi-Fi

and Built-in Switch

User Manual

Configuring via Web-based Interface

The

PPP

section is displayed for the

PPPoE

connection type.

Figure 68. The page for creating a new connection. The

PPP

section.

Parameter

Description

PPP

Username

A username (login) to access the Internet.

Without authorization

Select the checkbox if you don't need to enter a username and

password to access the Internet.

Password

A password to access the Internet.

Password confirmation

The confirmation of the entered password (to avoid mistypes).

Service name

The name of the PPPoE authentication server.

Authentication

algorithm

Select a required authentication method from the drop-down list or

leave the

AUTO

value.

MTU

The maximum size of units transmitted by the interface.

Keep Alive

Select the checkbox if you want the router to

keep you connected to

your ISP even when the connection has been inactive for a specified

period of time. When the checkbox is selected, the

LCP interval

and

LCP fails

fields are available. Specify the required values.

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DSL-6740U

VDSL/Ethernet Router with Wi-Fi

and Built-in Switch

User Manual

Configuring via Web-based Interface

Parameter

Description

Dial on demand

Select the checkbox if you want the router to establish connection to

the Internet on demand. In the

Maximum idle time

field, specify a

period of inactivity (in seconds) after which the connection should

be terminated.

PPP IP extension

This option is used by some ISPs. Contact your ISP to clarify if this

checkbox needs to be enabled.

Static IP Address

Fill in the field if you want to use a static IP address to access the

Internet.

PPP debug

Select the checkbox if you want to log

all data on PPP connection

debugging.

PPPoE pass through

Select the checkbox if you want to allow PPPoE clients of

computers from your LAN to connect to the Internet through this

PPPoE connection of the router.

The

IP

section is displayed for the

Static IP

and

Dynamic IP

connection types.

Figure 69. The page for creating a new connection. The

IP

section.

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DSL-6740U

VDSL/Ethernet Router with Wi-Fi

and Built-in Switch

User Manual

Configuring via Web-based Interface

Parameter

Description

IP

IP Address

Displayed for the

Static IP

type only.

Enter an IP address for this WAN connection.

Netmask

Displayed for the

Static IP

type only.

Enter a subnet mask for this WAN connection.

Gateway IP address

Displayed for the

Static IP

type only.

Enter an IP address of the gateway used by this WAN connection.

Vendor ID

Displayed for the

Dynamic IP

type only.

The identifier of your ISP.

Optional

.

When all needed settings are configured, click the

Save

button.

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DSL-6740U

VDSL/Ethernet Router with Wi-Fi

and Built-in Switch

User Manual

Configuring via Web-based Interface

LAN

To configure the router's local interface, proceed to the

Net / LAN

page.

Figure 70. Basic settings of the local interface.

If needed, edit the basic parameters of the local interface.

Parameter

Description

IP Address

The IP address of the router in the local subnet. By default, the

following value is specified:

192.168.1.1

.

Netmask

The mask of the local subnet. By default, the following value is

specified:

255.255.255.0

.

On the page, you can also specify parameters for the additional local subnet.

Figure 71. Configuring parameters for the additional local subnet.

Parameter

Description

IP Address 2

An alias IP address of the router's IP address.

Netmask 2

A mask of the additional local subnet.

NAT 2

Select the checkbox if you want one WAN IP address to be used for

all computers of the additional local subnet. For the main local

subnet, you can select the

NAT

checkbox while creating WAN

connection via the

Click'n'Connect

Wizard or on the

Net / WAN

page.

Firewall 2

Select the checkbox to enable protection against ARP and DDoS

attacks for all computers of the additional local subnet. For the main

local subnet, you can select the

Firewall

checkbox while creating

WAN connection via the

Click'n'Connect

Wizard or on the

Net /

WAN

page.

When needed settings are configured, click the

Save

button.

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DSL-6740U

VDSL/Ethernet Router with Wi-Fi

and Built-in Switch

User Manual

Configuring via Web-based Interface

In the

DHCP server

section, you can configure the built-in DHCP server of the router. The built-in

DHCP server automatically assigns IP addresses to computers of the main local subnet (you need to

specify IP addresses manually for computers of the additional local subnet).

Figure 72. The section for configuring the DHCP server.

Parameter

Description

Mode

An operating mode of the router's DHCP server.

Enable

: the router assigns IP addresses to clients automatically in

accordance with the specified parameters. When this value is

selected, the

DNS Relay

,

Start IP

,

End IP

, and the

Lease time

fields are displayed on the page.

Disable

: the router's DHCP server is disabled, clients' IP addresses

are assigned manually.

Relay

: an external DHCP server is used to assign IP addresses to

clients. When this value is selected, the

External DHCP server IP

field is displayed on the page.

DNS Relay

Select the checkbox so that the devices connected to the router

obtain the address of the router as the DNS server address.

Deselect the checkbox so that the devices connected to the router

obtain the address transmitted by the ISP or specified on the

Advanced / DNS

page as the DNS server address.

Start IP

The start IP address of the address pool used by the DHCP server to

distribute IP addresses to clients.

End IP

The end IP address of the address pool used by the DHCP server to

distribute IP addresses to clients.

Lease time

The lifetime of IP addresses leased by the DHCP server. At the end

of this period the leased IP address is revoked and can be distributed

to another device, unless the previous device has confirmed the need

to keep the address.

External DHCP server IP

The IP address of the external DHCP server which assigns IP

addresses to the router's clients.

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