NetComm NB3300 - Manual (Page 21)

Rev.1 - YML632 www.netcomm.com.au
ADSL Modem Router Page 21
Gateway, Router and Modem are different working modes that the ADSL Switch Router can use.
It is highly recommend that you use the Gateway mode, which is NAT enabled. It not only
allows LAN users to share a single IP Address, but also protects your LAN network from
outside intruders. If the ADSL Switch Router is set to the Router mode or the Modem mode, all
the PCs in the LAN will have to be assigned fixed IP Addresses. The Router mode allows users
to specify which routing path data packets should take. If setting to the Modem mode, the
Public IP Address setting is not necessary.
LLC Encaps, Classical IP, PPPoE, and PPPoA are different connection modes that are different
protocols of making the initial session between your ADSL Switch Router and ISP’s equipment.
Your ISP may provide the information that which connection mode you should set. If you don’t
know which one to choose, you have to call your ISP to get this information.
Gateway using LLC Encaps. (Dynamic IP)
This connection type is the default setting of this ADSL Switch Router. Choose this setting if:
1. You want to employ NAT to share Internet access for all of your computers, as well as
protect them for outside intruders.
2. Your ISP uses LLC Encapsulation and DHCP to assign IP addresses when you connect. (LLC
encapsulation allows multiplexing of multiple protocols over a single ATM virtual connection
(VC). You can find more information in the RFC 2684 standard.)
Gateway using LLC Encaps. (Static IP)
Choose this setting according if :
1. You want to employ NAT to share Internet access for all of your computers, as well as
protect them for outside intruders.
2. Your ISP uses LLC Encapsulation and provides you with one or more IP addresses when
you apply for the service. You can find more information in the RFC 2684 standard.
■ Specify WAN IP Address Enter one IP address provided by your ISP.
■ Subnet Mask Enter the subnet mask values provided by your ISP.
■ Default Gateway IP Address Your ISP will provide you with the Default Gateway IP
Address.
■ Domain Name Server (DNS) Your ISP will provide you with at least one DNS IP
Address. Multiple DNS IP settings are common. The first available DNS entry is used in
most cases.