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Prestige 794M User’s Guide
49 Chapter 4 WAN
Operationally, PPPoE saves significant effort for both you and the ISP or carrier, as it requires
no specific configuration of the broadband modem at the customer site. By implementing
PPPoE directly on the Prestige (rather than individual computers), the computers on the LAN
do not need PPPoE software installed, since the Prestige does that part of the task.
Furthermore, with NAT, all of the LAN computers will have access.
4.1.1.3 PPPoA
PPPoA stands for Point to Point Protocol over ATM Adaptation Layer 5 (AAL5). A PPPoA
connection functions like a dial-up Internet connection. The Prestige encapsulates the PPP
session based on RFC1483 and sends it through an ATM PVC (Permanent Virtual Circuit) to
the Internet Service Provider’s (ISP) DSLAM (digital access multiplexer). Please refer to RFC
2364 for more information on PPPoA. Refer to RFC 1661 for more information on PPP.
4.1.1.4 IPoA
With IPoA (IP over ATM), the Prestige attempts to map the IP subnet onto the ATM network.
4.2 ISP
Use the ISP screens to configure the Prestige for Internet access. The screen differs by the
encapsulation.
Figure 29 WAN: ISP
The following table describes the labels in this screen.
Table 21 WAN: ISP
LABEL DESCRIPTION
Name This field displays the descriptive name of this Internet access setting for
identification purposes.
Encapsulation This field displays the connection type.
Creator This field indicates how this Internet access setting is created.
VPI This field displays the VPI (Virtual Path Identifier) number.
VCI This field displays the VCI (Virtual Circuit Identifier) number.
Edit Click Edit to change the Internet access settings. The configuration screen varies
depending on the encapsulation (or connection type).
Change Click Change to select a different encapsulation and change the settings.