3Com OfficeConnect 3CR414492, Getting Started Manual

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Starting the OfficeConnect Remote 812 Manager 2-13
Network Service
Your Service provider should provide you with the type of
Network Service to configure for your WAN connection.
The OCR 812 supports the following Network Services:
PPP — The Point to Point Protocol is a WAN interface
protocol between the OCR 812 and your ISP’s Remote
Server. The protocol provides built in negotiation for
addresses and connection parameters, and can route
multiple protocols over a single link.
PPPoA (Point to Point Protocol over ATM
(Asynchronous Transfer Mode) — One of the WAN
PPP protocols your ISP chooses.
PPPoE (Point to Point Protocol over Ethernet —
Another WAN PPP protocol that is compatible with
PCs and many of their pre-existing connections.
RFC 1483 – Is a defined protocol standard that
describes two encapsulation methods for carrying
network traffic over ATM AAL5. The encapsulation
methods; routed and bridged, must be configured the
same on both ends of the link.
To select routed encapsulation, select RFC 1483.
To select bridged encapsulation, select RFC 1483
with MAC encapsulation.
RFC 1483 with MAC Encapsulation – Specifies
RFC 1483 with a bridge encapsulation. This feature
enables the OCR 812 to function as a router but to
work in a bridged environment. When enabled, the
network level addresses are used for forwarding, but
the MAC layer addresses are pre-pended in the ethernet
header over the Wide Area Connection.
ATM VC Parameters
Your Service provider should provide you with the Virtual
Path Identifier (VPI) and Virtual Connection Identifier (VCI)
values to configure for your connection. These are
pre-assigned virtual path information used to route ATM
cells through the network to your ISP.