Chapter 4: Connection Mode
Router Mode
* BRAS
：
Broadband Remote Access Server
RADIUS
Server
IP over ATM
Public IP(s)
Pre-assigned
by ISP (+ NAT)
PC(s)
BRAS
STM-1
DSLAM
ADSL
Router
Loop
ISP
Default Private IP
192.168.1.1 for
Management
AAA
Hub
Description:
In this deployment environment, we make up a private IP network of 192.168.1.1. NAT function is enabled (on
ADSL Router or use another NAT box connected to hub) to support multiple clients to access the Router and some
public servers (WWW, FTP).
If you apply for multiple IP addresses from your ISP, you can assign these public IP addresses to the ADSL Router
and public server, e.g., Web or FTP server. Typically the first IP is network address, the second is used as router IP
address and the last one is subnet broadcasting. Other remaining IP addresses can be assigned to PCs on the LAN.
For example: You are given the IP addresses 10.251.2.0 ~ 10.251.2.7. Then:
10.251.2.0 is network IP address
10.251.2.1 is assigned to router IP address.
10.251.2.7 is subnet broadcasting
10.251.2.2~10.251.2.6 can be assigned to public servers on the LAN.
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
Advanced User > Configuration > WAN Configuration > Create a new PVC
.
And select the Data
Mode –
RFC1483 Routed
. Then click
Next
button.
3.
Enter the VPI/VCI values provided by your ISP and select the encapsulation type as
LLC/SNAP
or
VC MUX
.
Then click
Apply
.
4.
Set IP configuration for Local WAN IP Address. Choose
Specify an IP Address
item. Please set as the
following example,
IP Address:
10.3.80.105
(should be the one that you get from ISP)
Subnet Mask:
255.255.255.248
Check on
Enable NAT on this interface
and click
Apply.
5. Go
to
Configuration > LAN Configuration
and set as the following
Primary IP:
192.168.1.1
, Subnet Mask: 255.255.255.0
Secondary IP:
10.3.80.105,
Subnet Mask: 255.255.255.248
(should be the one that you get from ISP)
Then click
Apply
.
6. Go
to
Configuration > IP Route
and click
Create a New Route
to add a new route.
Destination Address: leave default
Netmask:
leave default
Forward packets to:
Interface
Then click
Apply
.
7. Go
to
Configuration > DNS
and enable
DNS Relay
setting and click
Next
. On the DNS Relay web page, enter
the DNS Server IP address, for example
168.95.1.1
(you should get this value from your ISP).
8.
Save the configuration from
System
>
Save Configuration
and
System
>
Restart
to restart your router for
initiating these settings.
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