Chapter 3:Accessing Internet
PPP over Ethernet (PPPoE) Mode
RDAIUS
Server
AAA
BRAS
STM-1
DSLAM
Loop
Dynamic Public IP
assigned by BRAS
PPPoE+NAT+DHCP
on Private LAN
Hub
ADSL
Router
Ethernet
PC(S)
192.168.1.3
192.168.1.2
PPP over Ethernet
Default Private IP
192.168.1.1
*BRAS: Broadband
Remote Access Server
ISP
(Internet Service Provider)
Description:
In this deployment environment, the PPPoE session is between the ADSL WAN interface and BRAS.
The ADSL Router gets a public IP address from BRAS when connecting to DSLAM. The multiple
client PCs will get private IP address from the DHCP server enabled on private LAN. The enabled
NAT mechanism will translate the IP information for clients to access the Internet.
Configuration:
1.
Start up your browser and type
192.168.1.1
as the address to enter this ADSL web-based
manager.
2.
Go to
Quick Start -Quick Setup
. Uncheck
Auto Scan Internet Connection (PVC)
. Type in
the
VCI
and
VPI
value. Then click the
Next
button. eg:
VPI – 0
VCI – 39
3.
On the
Configure Internet Connection -Connection Type
page, select the
PPP over
Ethernet (PPPoE)
then click the
Next
button.
4.
In the
WAN IP Settings
page, select
Obtain an IP address automatically
and check
Enable
NAT
box. Click
Next
.
5.
In the
PPP Username and Password
page, enter the PPP username and password that you got
from your ISP. Select
Dial on Demand
and type in the number for inactivity timeout. The
default is 20. Or select
Always on
. Then click
Next
.
6.
In the
Configure LAN side Settings
page, type in the IP address and subnet mask for your
LAN. Check
DHCP Server on
box. And type in the start and end points. Then type in the
leased time that you want. And click
Next
. eg:
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
7.
Check the network information. Make sure the settings match the settings provided by ISP.
Click
Finish
.
