- Billion ADSL Modem/Router With Single Ethernet Port User's Manual

the BIPAC 5100S acts as a DHCP client on the WAN port and so the IP Address and ENET

ENCAP Gateway fields are not applicable (N/A) as the DHCP server assigns them to the

BIPAC 5100S.

3.7.4 Private IP Addresses

Every machine on the Internet must have a unique address. If your networks are isolated from

the Internet, for example, only between your two branch offices, you can assign any IP

addresses to the hosts without problems. However, the Internet Assigned Numbers Authority

(IANA) has reserved the following three blocks of IP addresses specifically for private

networks:

10.0.0.0 - 10.255.255.255

172.16.0.0 - 172.31.255.255

192.168.0.0 - 192.168.255.255

You can obtain your IP address from the IANA, from an ISP or it can be assigned from a

private network. If you belong to a small organization and your Internet access is through an

ISP, the ISP can provide you with the Internet addresses for your local networks. On the other

hand, if you are part of a much larger organization, you should consult your network

administrator for the appropriate IP addresses.

3.8 Nailed-Up Connection (PPP)

A nailed-up connection is a dial-up line where the connection is always up regardless of traffic

demand. The BIPAC 5100S does two things when you specify a nailed-up connection. The

first is that idle timeout is disabled. The second is that the BIPAC 5100S will try to bring up the

connection when turned on and whenever the connection is down. A nailed-up connection can

be very expensive for obvious reasons.

Do not specify a nailed-up connection unless your telephone company offers flat-rate service

or you need a constant connection and the cost is of no concern

3.9 NAT

NAT (Network Address Translation - NAT, RFC 1631) is the translation of the IP address of a

host in a packet, for example, the source address of an outgoing packet, used within one

network to a different IP address known within another network.

3.10 Wizard Setup Configuration: Second Screen

The second wizard screen varies depending on what mode and encapsulation type you use.

All screens shown are with routing mode. Configure the fields and click Next to continue.