If “Enable NAT” is disabled during the configuration, you must configure the route on the BRAS; otherwise you cannot access your ISP. In applications, “Enable NAT” must be checked.

4.4 IP over ATM (IPoA) +NAT Mode

Descriptions

In this example, the ROUTER is connected to the DSLAM through PVC 8/35 and the access mode is the IPOA+NAT. The downlink interface of BRAS is encapsulated in 1483R, the IP address is 20.1.1.1, the IP address of the uplink interface is 10.61.92.157; the WAN IP address of the ROUTER is assigned as 20.1.1.2; the PC attached to the ROUTER is assigned with a private IP address (within the same segment as the management IP address 192.168.1.1); the NAT functions of the ROUTER is enabled, and the private address of the PC is translated into the public address 139.1.1.* (2~254) dynamically assigned by BRAS for accessing the ISP.

The IP address of the PC can be fixed (as in this example) or assigned through DHCP Server of the ROUTER. If it is assigned by DHCP Server, the DHCP functions of the ROUTER must be enabled. The IP address of the DHCP address pool is 192.168.1.* (2~254). The functions are enabled by default and at the same time the PC is configured to obtain IP and DNS addresses dynamically.

Setting

1.Activate your browser and input “192.168.1.1” in the address column to login the

ROUTER.

2.Click “Advanced Setup” -> “WAN”, then click “add”.

3.In the “ATM PVC Configuration” interface configure VPI/VCI as 8/35 and then click “Next”.

4.In the “Connection Type” interface, select “ IP over ATM (IPoA)” and

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