Chapter 3:Accessing Internet
Unnumbered IP over ATM (IPoA)
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| Default Private IP | |
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| 192.168.1.1 | |
ISP | Loop |
| 10.3.75.51 | |
(Internet Service Provider) |
| 10.3.75.49 | ||
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| BRAS | DSLAM | ADSL | Hub |
AAA | Router |
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| 10.3.75.50 | |
RDAIUS |
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| PC(S) | |
Server |
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*BRAS: Broadband |
| IP over ATM |
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Remote Access Server | Public IP |
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Description:
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.
The following example uses the LAN IP address ranging from 10.3.75.49 to 10.3.75.54 and the subnet mask for LAN is 255.255.255.248. The WAN address is 10.3.70.1, and the subnet mask for WAN is 255.255.255.252.
In such circumstance, we do not assign any WAN IP.
Configuration:
1.Start up your browser and type 192.168.1.1 as the address to enter this ADSL
2.Go to Quick Start
VPI – 0 VCI – 32
3.On the Configure Internet Connection
4.In the WAN IP Settings page, select None for WAN IP address settings. Then, select Use the following DNS Server Address. Type in the Primary DNS server and Secondary DNS server. Uncheck Enable NAT. Then Click Next for next page.
Primary DNS server: 168.95.1.1
Secondary DNS server: 168.95.192.1
5.In the Configure LAN side Settings page, type in the IP address and subnet mask for your LAN.
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
6.Check Configure the second IP Address and Subnet Mask for LAN Interface and type in the second IP address and subnet mask. Then click Next.
Secondary IP Address: 10.3.75.49
Subnet mask: 255.255.255.248
7.Check the network information. Make sure the settings match the settings provided by ISP. Click Finish.
