Ppp Over Atm (Pppoa) Ip Extension Mode - Siemens SL2-141 User Manual

ADSL Router User Manual

PPP over ATM (PPPoA) IP Extension Mode

(Internet Service Provider)
*BRAS: Broadband
Remote Access Server
Description:
In this deployment environment, the PPPoA session is between the ADSL WAN interface and BRAS.
The ADSL Router acts as a bridge and gets a public IP address from BRAS for your computer. And
only the one that got the public IP address is allowed to access into Internet. Moreover, no NAT
translation will be done at this case.
Configuration:
1.
2.
3.
4.
5.
6.
7.
8.
54
ISP
STM-1
BRAS
AAA
RDAIUS
Server
Start up your browser and type 192.168.1.1 as the address to enter this ADSL web-based
manager.
Go to Advanced - Internet - Connections. And click Add.
Type in the VCI and VPI value. Then click the Next button. eg:
VPI – 0
VCI – 38
On the Configure Internet Connection -Connection Type page, select the PPP over ATM
(PPPoA) then click the Next button.
In the WAN IP Settings page, select Obtain an IP address automatically, uncheck Enable
NAT box and check PPP IP extension then click Next.
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.
In the Configure LAN side Settings page, type in the IP address and subnet mask for your
LAN. And click Next. eg:
Primary IP address:192.168.1.1
Subnet Mask:255.255.255.0
Check the network information. Make sure the settings match the settings provided by ISP.
Click Finish.
Loop
ADSL
DSLAM
Router
PPP over ATM
PPPoA+NAT+DHCP
on Private LAN
Default Private IP
192.168.1.1
Dynamic Public IP
assigned by BRAS
Ethernet
Hub
PC