User's Manual

ZyAIR B-2000 Wireless LAN Gateway with 4-Port Switch
3-10 Internet Access
3.7 Encapsulation
Be sure to use the encapsulation method required by your ISP. The ZyAIR supports the following methods.
3.7.1 Ethernet
This encapsulation method is used when the WAN port is used as a regular Ethernet.
3.7.2 PPPoE
Point-to-Point Protocol over Ethernet (PPPoE) functions as a dial-up connection. PPPoE is an IETF Draft
standard specifying how a host personal computer interacts with a broadband modem (for example, xDSL,
cable, wireless, etc.) to achieve access to high-speed data networks. It preserves the existing Microsoft Dial-
Up Networking experience and requires no new learning or procedures.
For the service provider, PPPoE offers an access and authentication method that works with existing access
control systems (for example, Radius). For the user, PPPoE provides a login and authentication method that
the existing Microsoft Dial-Up Networking software can activate, and therefore requires no new learning or
procedures for Windows users.
One of the benefits of PPPoE is the ability to let end users access one of multiple network services, a
function known as dynamic service selection. This enables the service provider to easily create and offer
new IP services for specific users.
Operationally, PPPoE saves significant effort for both the end user and ISP/carrier, as it requires no specific
configuration of the broadband modem at the customer site.
By implementing PPPoE directly on the ZyAIR (rather than individual computers), the computers on the
LAN do not need PPPoE software installed, since the Teledat Router 400 does that part of the task.
Furthermore, with SUA, all of the LAN's computers will have access. For more information on PPPoE,
please refer to the PPPoE Appendix.
3.7.3 PPTP
Point-to-Point Tunneling Protocol (PPTP) is a network protocol that enables transfer of data from a remote
client to a private server, creating a Virtual Private Network (VPN) using TCP/IP-based networks.
PPTP supports on-demand, multi-protocol, and virtual private networking over public networks, such as the
Internet. For more information on PPTP, please refer to the PPTP Appendix.