Chapter 3: Accessing the Internet

MER

Public IP

Default Private IP

assigned by BRAS

192.168.1.1

ISP

STM-1

Loop

 

 

(Internet Service Provider)

 

Ethernet

 

 

DSLAM

ADSL

Hub

 

BRAS

Router

PC

AAA

 

 

 

 

RDAIUS

 

 

 

 

Server

 

 

 

 

*BRAS: Broadband

 

MER

 

 

 

 

 

 

Remote Access Server

 

 

 

 

Description:

In this deployment environment, we make up a private IP network of 192.168.1.1. NAT function is enabled to support multiple clients to access to Internet.

In this example, the ADSL Router acts as a NAT device which translates a private IP address into a public address. Therefore multiple users can share with one public IP address to access the Internet through this router. The public address can be a static public address that is pre-assigned by ISP or a dynamic public address that is assigned by the ISP DHCP server.

Configuration:

1.Start your browser and type 192.168.1.1 in the URL box to access ADSL web-based manager.

2.Go to Quick Start – Quick Setup. Uncheck Auto Scan Internet Connection (PVC). Key in the VCI and VPI value, e.g.,

VPI – 0 VCI – 37

Then click the Next button.

3.On the Configure Internet Connection – Connection Type page, select Bridging and then click the Next button.

4.On the WAN IP Settings page, select Obtain an IP address automatically; then, select Obtain DNS server address automatically.

5.Check Enable NAT. Then click Next.

6.On the Configure LAN side Settings page, key in the IP address and subnet mask for your LAN. Check DHCP Server On box, and enter the start and end points, e.g.:

Primary IP address:192.168.1.1

Subnet Mask:255.255.255.0

Start IP Address:192.168.1.2

End IP Address: 192.168.1.254

Then key in the leased time that you want. And click Next

7.Check the network information on the Summary page. Make sure the contents match the settings provided by your ISP. Click Finish.

8.Now the router is well-configured. You can access the Internet.

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Dynalink RTA1025W user manual Primary IP address192.168.1.1, Start IP Address192.168.1.2 End IP Address