Network Device User Guide SMC7003-USB

D RIVER I NSTALLATION
3-2
drivers.
Several different protocols are used on top of ATM. The protocol
required in your configuration depends on the equipment deployed
by your DSL service provider. There are several possibilities:
• Point to Point Protocol (PPP) Over ATM (RFC 2364) - PPP
provides session setup, user authentication (login), and
encapsulation for upper layer protocols such as IP (Internet
Protocol). The use of PPP makes the modem appear as a dial- up
modem to the operating system. Dial-Up Networking under
Windows is used to establish a connection. PPP is supported by
the WAN (Wide Area Network) driver and ATM driver.
• Bridged/Routed Ethernet/IP over ATM (RFC 1483) - This
protocol makes the modem appear as a local area network
(LAN) device to the operating system.
• Classical IP and ARP over ATM (RFC 1577) - This protocol also
makes the modem appear as a local area network (LAN) device
to the operating system. It supports IP address and ATM
address mapping.
Three types of device drivers are provided for the EZ Connect
ADSL USB Modem, WAN, ATM and LAN. Note that all three drivers
support the ATM protocol. The proper choice of driver depends
on your combination of Windows operating system and protocol.
• WAN driver - this driver causes the modem to resemble a
dial-up modem. Call establishment is performed through
Windows Dial-Up Networking. This driver supports PPP (RFC
2364) with PVC connections.
• LAN driver - this driver makes the modem appear as a LAN or
Ethernet device. Connection establishment is automatic. This
driver supports Multiprotocol Encapsulation over ATM (RFC
1483) with PVC connections.