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71

System Up Time

This field displays how long the AMG1302/AMG1202-TSeries has been running since it

last started up. The AMG1302/AMG1202-TSeries starts up when you plug it in, when

you restart it (

Maintenance > Reboot

), or when you reset it (see

Chapter 1 on page

19

).

Current Date/

Time

This field displays the current date and time in the AMG1302/AMG1202-TSeries. You can

change this in

Maintenance > Time Setting

.

System Resource

CPU Usage

This field displays what percentage of the AMG1302/AMG1202-TSeries’s processing

ability is currently used. When this percentage is close to 100%, the AMG1302/

AMG1202-TSeries is running at full load, and the throughput is not going to improve

anymore. If you want some applications to have more throughput, you should turn off

other applications.

Memory Usage

This field displays what percentage of the AMG1302/AMG1202-TSeries’s memory is

currently used. Usually, this percentage should not increase much. If memory usage

does get close to 100% and remains like that for a high period of time, the AMG1302/

AMG1202-TSeries may become unstable and you should restart it. See

Chapter 24 on

page 221

, or turn off the device (unplug the power) for a few seconds.

LABEL

DESCRIPTION

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73

C

HAPTER

6

Broadband

6.1

Overview

This chapter describes the AMG1302/AMG1202-TSeries’s

Broadband

screens. Use these screens to

configure your AMG1302/AMG1202-TSeries for Internet access.

A WAN (Wide Area Network) connection is an outside connection to another network or the

Internet. It connects your private networks (such as a LAN (Local Area Network) and other

networks, so that a computer in one location can communicate with computers in other locations.

Figure 18

LAN and WAN

6.1.1

What You Can Do in the WAN Screens

•

Use the

Internet Connection

screen (

Section 6.2 on page 74

) to configure the WAN settings on

the AMG1302/AMG1202-TSeries for Internet access.

•

Use the

More Connections

screen (

Section 6.3 on page 81

) to set up additional Internet access

connections.

6.1.2

What You Need to Know About WAN

Encapsulation Method

Encapsulation is used to include data from an upper layer protocol into a lower layer protocol. To set

up a WAN connection to the Internet, you need to use the same encapsulation method used by your

ISP (Internet Service Provider). If your ISP offers a dial-up Internet connection using PPPoE (PPP

over Ethernet) or PPPoA, they should also provide a username and password (and service name)

for user authentication.

WAN IP Address

The WAN IP address is an IP address for the AMG1302/AMG1202-TSeries, which makes it accessible

from an outside network. It is used by the AMG1302/AMG1202-TSeries to communicate with other

WAN

LAN

Chapter 6 Broadband

AMG1302/AMG1202-TSeries User’s Guide

74

devices in other networks. It can be static (fixed) or dynamically assigned by the ISP each time the

AMG1302/AMG1202-TSeries tries to access the Internet.

If your ISP assigns you a static WAN IP address, they should also assign you the subnet mask and

DNS server IP address(es) (and a gateway IP address if you use the Ethernet or ENET ENCAP

encapsulation method).

Multicast

Traditionally, IP packets are transmitted in one of either two ways - Unicast (1 sender - 1 recipient)

or Broadcast (1 sender - everybody on the network). Multicast delivers IP packets to a group of

hosts on the network - not everybody and not just one.

IGMP

IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to establish membership

in a Multicast group - it is not used to carry user data. There are three versions of IGMP. IGMP

version 2 and 3 are improvements over version 1, but IGMP version 1 is still in wide use.

IPv6

IPv6 (Internet Protocol version 6), is designed to increase IP address space and enhance features.

The AMG1302/AMG1202-TSeries supports IPv4/IPv6 dual stack and can connect to IPv4 and IPv6

networks. See (

Appendix E on page 295

) for more information about IPv6.

Finding Out More

See

Section 6.4 on page 86

for technical background information on WAN.

6.1.3

Before You Begin

You need to know your Internet access settings such as encapsulation and WAN IP address. Get this

information from your ISP.

6.2

The Internet Connection Screen

Use this screen to change your AMG1302/AMG1202-TSeries’s WAN settings. Click

Network

Setting > Broadband > Internet Connection

. The screen differs by the WAN type and

encapsulation you select.

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75

Figure 19

Network Setting > Broadband > Internet Connection > Auto Sync Up