ATL Telecom AM30 - Manual (Page 107)

ATL Telecom User Guide
AM30
1
0
7
Configuring EOA Interfaces
This chapter describes how to configure an Ethernet-over-ATM interface on the ROUTER , if
one is needed to communicate with your ISP.
Overview of EOA
The Ethernet-over-ATM (EOA) protocol is often referred to as RFC1483, which is the
Internet specification that defines it. It is commonly used to carry data between local area
networks that use the Ethernet protocol and wide-area networks that use the ATM
protocol. Many telecommunications industry networks use the ATM protocol. ISPs who
provide DSL services often use the EOA protocol for data transfer with their customers’ DSL
modems.
EOA can be implemented to provide a bridged connection between a DSL modem and the
ISP. In a bridged connection, data is shared between the ISP’s network and their customer’s
as if the networks were on the same physical LAN. Bridged connections do not use the IP
protocol. EOA can also be configured to provide a routed connection with the ISP, which
uses the IP protocol to exchange data.
Before creating an EOA interface or modifying the default settings, contact your ISP to
determine which type of protocol they use.
Note
PPP vs. EOA: Your ISP may use a protocol other than EOA
for communication with the ROUTER, such as the point-to-
point protocol (PPP). One type of PPP, named PPP over
Ethernet (PPPoE), actually works “on top” of the EOA
protocol. The other type, PPP over ATM (PPPoA), does not.
However, if your ISP uses either type of PPP, you do not
need to separately create an EOA interface. See Chapter 0
for instructions on creating or configuring a PPP interface.