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Figure 4-4 WAN - Dynamic IP

This page displays the WAN IP parameters assigned dynamically by your ISP, including IP

address, Subnet Mask, Default Gateway, etc. Click the

Renew

button to renew the IP parameters

from your ISP. Click the

Release

button to release the IP parameters.

¾

MTU Size:

The normal MTU (Maximum Transmission Unit) value for most Ethernet

networks is 1500 Bytes. For some ISPs you need to reduce the MTU. But this is rarely

required, and should not be done unless you are sure it is necessary for your ISP connection

¾

If your ISP gives you one or two DNS addresses, select

Use These DNS Servers

and enter

the primary and secondary addresses into the correct fields. Otherwise, the DNS servers will

be assigned dynamically from ISP

¾

Get IP with Unicast DHCP:

A few ISPs' DHCP servers do not support the broadcast

applications. If you cannot get the IP address normally, you can choose this option. (You

generally need not check this option)

)

Note:

If you get Address not found errors when you go to a Web site, it is likely that your DNS servers

are set up improperly. You should contact your ISP to get DNS server addresses.

2.

If you choose

Static IP,

you should have fixed IP parameters specified by your ISP. The

Static IP settings page will appear, shown in Figure 4-5:

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Figure 4-5 WAN - Static IP

You should type the following parameters into the spaces provided:

¾

IP Address

-

Enter the IP address in dotted-decimal notation provided by your ISP

¾

Subnet Mask

-

Enter the subnet Mask in dotted-decimal notation provided by your ISP,

usually is 255.255.255.0

¾

Default Gateway

: (Optional) Enter the gateway IP address in dotted-decimal notation

provided by your ISP

¾

MTU Size -

The normal MTU (Maximum Transmission Unit) value for most Ethernet

networks is 1500 Bytes. For some ISPs you may need to modify the MTU. But this is rarely

required, and should not be done unless you are sure it is necessary for your ISP connection

¾

Primary DNS -

(Optional) Type the DNS address in dotted-decimal notation provided by

your ISP

¾

Secondary DNS -

(Optional) Type another DNS address in dotted-decimal notation

provided by your ISP if provided

3.

If you choose

PPPoE

, you should enter the following parameters (Figure 4-6):

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Figure 4-6 WAN - PPPoE

¾

User Name/Password -

Enter the User Name and Password provided by your ISP. These

fields are case-sensitive

¾

Connect on Demand -

You can configure the router to disconnect your Internet connection

after a specified period of inactivity (

Max Idle Time

). If your Internet connection has been

terminated due to inactivity,

Connect on Demand

enables the router to automatically

re-establish your connection as soon as you attempt to access the Internet again. If you

wish to activate

Connect on Demand

, click the radio button. If you want your Internet

connection to remain active at all times, enter 0 in the

Max Idle Time

field. Otherwise, enter

the number of minutes you want to have elapsed before your Internet connection

terminates.

Caution

:

Sometimes the connection cannot be disconnected although you specify a time to Max Idle

Time. This is because there may still be active applications in the background, which may

cause fee accounted by your ISP.

¾

Connect Automatically -

Connect automatically after the router is disconnected. To use

this option, click the radio button

¾

Connect Manually -

You can configure the router to make it connect or disconnect

manually. After a specified period of inactivity (

Max Idle Time

), the router will disconnect

your Internet connection, and not be able to re-establish your connection automatically as

soon as you attempt to access the Internet again. To use this option, click the radio button. If

you want your Internet connection to remain active at all times, enter 0 in the

Max Idle Time

field. Otherwise, enter the number in minutes that you wish to have the Internet connecting

last unless a new link is requested

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Caution

:

Sometimes the connection cannot be disconnected although you specify a time to Max Idle

Time. This is because there may still be active applications in the background, which may

cause fee accounted by your ISP.

Click the

Connect

button to connect immediately, Click the

Disconnect

button to disconnect

immediately.

Click the

Advanced Settings

button to set up the advanced option, the page shown in Figure 4-7

will then appear:

Figure 4-7 PPPoE Advanced Settings

¾

Packet MTU -

The default MTU size is 1492 bytes, which is usually fine. For some ISPs, you

need modify the MTU. This should not be done unless you are sure it is necessary for your

ISP

¾

Service Name/AC Name -

The service name and AC (Access Concentrator) name, this

should not be done unless you are sure it is necessary for your ISP

¾

ISP Specified IP Address -

If you know that your ISP does not automatically transmit your

IP address to the router during login, click “

Use the IP Address specified by ISP

” check

box and enter the IP address in dotted-decimal notation, which your ISP provided

¾

Detect Online Interval -

The default value is 0, you can input the value between 0 and 120.

The router will detect Access Concentrator online at every interval between seconds. If the

value is 0,

it

means do not detect

¾

DNS IP Address -

If you know that your ISP does not automatically transmit DNS

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addresses to the router during login, click “

Use the following DNS servers

” checkbox and

enter the IP address in dotted-decimal notation of your ISP’s primary DNS server. If a

secondary DNS server address is available, enter it as well.

Click the

Save

button to save your settings

4.

If you choose

L2TP

, you should enter the following parameters (Figure 4-8):

Figure 4-8 WAN – L2TP

For more details, please refer to your ISP.

¾

User

Name

/Password -

Enter the User Name and Password provided by your ISP. These

fields are case-sensitive

¾

Connect

/Disconnect

-

Click the button, you can handle the on-line connection or

disconnection

¾

Dynamic

IP/Static IP

-

Enter the IP address in dotted-decimal notation provided by your ISP

¾

Server IP Address/Name -

Please type the correct Server IP Address/Name which your

ISP

provided

¾

MTU Size (in bytes) -

The

default

value is 1460, which is usually fine. For some ISPs, you