INNACOMM W3100V, User Manual

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4 Networking Topology
Before configuring the Modem, you must clearly determine that the Modem is used
for Bridging mode or Routing mode. This chapter introduces some applications.
And see the Introductions to WEB Configuration Management for detailed
configurations.
4.1 PPP over ATM (PPPoA) Mode
Ethernet
RADIUS
Server
PPP over ATM
PPPOA + NAT
+
PC(s)
BRAS
STM-1
DSLAM
ADSL
ISP
192.168.1.1
AAA
192.168.1.2
192.168.1.3
Hub
Dynamic Public IP
assigned by BRAS
10.28.106.200
Pool
：
10.28.106.0
Descriptions
In this example, the Modem is connected to the DSLAM through PVC 8/35 and the
access mode is the built-in PPPOA+NAT. The encapsulation of the BRAS downlink
port is PPP OVER ATM, the authentication is AUTO, the IP address is
10.28.106.200, the IP Pool is 10.28.106.*, and the IP address of uplink port is
10.61.92.157. The IP of the WAN port on the Modem is assigned by BRAS through
the built-in PPPOA dial-up dynamically. The PC that the Modem is attached is
assigned with a private IP address (within the same segment with the management
IP of the Modem). The NAT functions of the Modem are enabled and the private PC
address is translated to the public address 10.28.106.* (2 ~ 254) assigned by
BRAS dynamically for accessing ISP.
The IP address of the PC can be fixed (as in this example) or assigned through
DHCP server of the Modem. If it is assigned by DHCP server, the DHCP functions
of the MODEM must be enabled. The IP address of the DHCP address pool is