Patton electronics ipRocketLink IAD 3086, Руководство пользователя

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4 • Basic Application Configurations Model 3086 G.SHDSL Integrated Access Device User Guide
36 Introduction
Introduction
The Model 3086 IAD comes with two data ports: a TDM (V.35, X.21, or T1/E1), and an Ethernet port.
TDM port data is not processed by the router or bridge core in the 3086, data is transmitted unprocessed over
the DSL link. Data from the Ethernet port is processed by the 3086 bridge or router core and sent inHDLC or
ATM encapsulation over the DSL link.
The 3086 can be used as a simple modem – transporting TDM data from a router, multiplexer, or PBX con-
nected to the V.35, X.21 or T1/E1 port. In this case the user configures DSL and TDM port features only.
The 3086 can concurrently transport TDM and Ethernet traffic, the TDM and Ethernet ports are activated,
and the user must assign DSL bandwidth for both TDM and Ethernet traffic. Since Ethernet layer is activated,
the user must configure the routing or bridging features and must choose from HDLC or ATM encapsulation
The 3086 can be used to transport Ethernet traffic only, via its 10/100 Base-T LAN across a campus or across
a WAN, in this case, the TDM port is not activated. In addition to configuring the DSL link, the user must
configure the routing or bridging features and must choose from HDLC or ATM encapsulation.
Configuration for these applications is presented in the following sections. The 3086 is used to transport TDM
data only, TDM plus Ethernet, or Ethernet only data. Since the configuration of the router or bridge and the
ATM or HDLC Features are considerably more complex than the DSL and data port layers, we present physi-
cal layer configuration of TDM port and TDM port plus Ethernet first as the foundation from which the
upper layers can be configured. An extensive section is devoted to the Bridge/Router, and HDLC/ATM appli-
cation configuration.
What follows is a brief description and a table summarizing the parameters for bridged and routed WAN ser-
vices achieved with the Model 3086.
The basic applications are divided according to whether the application is bridged or routed.
The bridged applications are RFC 1483 Bridged , PPPoA Bridged , and HDLC Bridged .
The routed applications are RFC 1483 , PPPoA , IPoA , PPPoE , and HDLC .
Another way of organizing the applications is according to the type of encapsulation: PPP , RFC 1483 , or Frame
Relay . PPP encapsulation is available as PPPoA bridged or routed and PPPoE . RFC 1483 and Frame Relay can
be configured for bridged and routed connections.