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38

Redial Policy

If you want to connect to Internet all the time, you can choose

Always On

. Otherwise, choose

Connect on Demand

and

Idle Time Out

Set the timeout for breaking down the Internet after passing

through the time without any action. When you choose

Connect

on Demand,

you have to type value here.

MTU Size

It means Max Transmit Unit for packet. The default

setting is 1442.

Clone MAC Address

It is available when the box of Enable is checked. Click

Clone

MAC Address

. The result will be displayed in the field of

MAC Address.

After finishing all the settings here, please click

OK

to activate them.

3G USB Modem

If your router connects to a 3G modem and you want to access Internet via 3G modem, choose

3G as connection type and type the required information in this web page.

SIM PIN code

Type PIN code of the SIM card that will be used to access

Internet.

Modem Initial String1/2

Such value is used to initialize USB modem. Please use the

default value. If you have any question, please contact to your

ISP.

APN Name

APN means Access Point Name which is provided and

required by some ISPs.

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Modem Dial String

Such value is used to dial through USB mode. Please use the

default value. If you have any question, please contact to your

ISP.

PPP Username

Type the PPP username (optional).

PPP Password

Type the PPP password (optional).

Clone MAC Address

It is available when the box of Enable is checked. Click

Clone

MAC Address

. The result will be displayed in the field of

MAC Address.

After finishing all the settings here, please click

OK

to activate them.

3.1.2 Ports

Ports page is used to change the setting for WAN port. You can set or reset the following

items. All of them are described in detail below.

Port

It displays current network interface.

Link

It displays current connection status. Green light means the

WAN connection is successful.

Current

It displays current speed that the router uses.

Speed Configured

It can set the speed and duplex of the port. You can use the drop

down list to choose the required speed for the router. If you

have no idea in configuring speed, simple use the default setting,

Auto

.

Flow Control

If flow control is enabled by checking

Configured

box, both

parties can send PAUSE frame to the transmitting device(s) if

the receiving port is too busy to handle. If not, there will be no

flow control in the port. It drops the packet if too much to

handle.

Current Rx: indicates whether pause frames on the port are

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40

obeyed.

Current Tx: indicates whether pause frames on the port are

transmitted.

Maximum Frame

This module offers 1518~9600 (Bytes) length to make the long

packet for data transmission.

Excessive Collision Mode

There are two modes for you to choose when excessive

collision happened in half-duplex condition.

Discard

- It determines whether the MAC drops frames after an

excessive collision has occurred. If yes, a frame is dropped after

excessive collision. This is IEEE Standard 802.3 half-duplex

flow control operation.

Restart

- It determines whether the MAC retransmits frames

after an excessive collision has occurred. If set, a frame is not

dropped after excessive collisions, but the backoff sequence is

restarted. This is a violation of IEEE Standard 802.3, but is

useful in non-dropping half-duplex flow control operation.

Power Control

The Configured column allows for changing the power savings

mode parameters per port.

Disabled

: All power savings mechanisms disabled.

ActiPHY

: Link down power savings enabled.

PerfectReach

: Link up power savings enabled.

Enabled

: Both link up and link down power savings enabled.

Refresh

Click this button to refresh the information for WAN port.

After finishing all the settings here, please click

OK

to activate them.

3.1.3 3G Backup

This page is used to setup 3G backup function. If you enable 3G backup, make sure your

WAN connection type is not in 3G mode. When the WAN connection is broken, router will

try to keep the connection with 3G mode. After WAN connection is recovered, router will

disconnect the 3G connection automatically.

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SIM PIN code

Type PIN code of the SIM card that will be used to access

Internet.

Modem Initial String1/2

Such value is used to initialize USB modem. Please use the

default value. If you have any question, please contact to your

ISP.

APN Name

APN means Access Point Name which is provided and

required by some ISPs.

Modem Dial String

Such value is used to dial through USB mode. Please use the

default value. If you have any question, please contact to your

ISP.

PPP Username

Type the PPP username (optional).

PPP Password

Type the PPP password (optional).

Clone MAC Address

It is available when the box of Enable is checked. Click

Clone

MAC Address

. The result will be displayed in the field of

MAC Address.

3.2 LAN

Local Area Network (LAN) is a group of subnets regulated and ruled by router. The design of

network structure is related to what type of public IP addresses coming from your ISP.

Basics of LAN

The most generic function of Vigor router is NAT. It creates a private subnet of your own. As

mentioned previously, the router will talk to other public hosts on the Internet by using public

IP address and talking to local hosts by using its private IP address. What NAT does is to

translate the packets from public IP address to private IP address to forward the right packets

to the right host and vice versa. Besides, Vigor router has a built-in DHCP server that assigns

private IP address to each local host. See the following diagram for a briefly understanding.

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In some special case, you may have a public IP subnet from your ISP such as

220.135.240.0/24. This means that you can set up a public subnet or call second subnet that

each host is equipped with a public IP address. As a part of the public subnet, the Vigor router

will serve for IP routing to help hosts in the public subnet to communicate with other public

hosts or servers outside. Therefore, the router should be set as the gateway for public hosts.

What is Routing Information Protocol (RIP)

Vigor router will exchange routing information with neighboring routers using the RIP to

accomplish IP routing. This allows users to change the information of the router such as IP

address and the routers will automatically inform for each other.

What are Virtual LANs and Rate Control