Wellink Corporation NEOBIT1014VA ユーザーズマニュアル

ページ / 171
 
 
  
104 
14 
Configuring EOA Interfaces 
This chapter describes how to configure an Ethernet-over-ATM 
interface on the NEOBIT 1014VA, if one is needed to communicate 
with your ISP. 
Overview of EOA 
The Ethernet-over-ATM (EOA) protocol 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 NEOBIT 1014VA, 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, PP 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 12 for instructions on creating or 
configuring a PPP interface.