Perle 833IS, Руководство пользователя

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Chapter 5: Configuring the Perle 833IS
Perle 833IS User Guide 65
Bridge Client
This client operates with the Server as a bridge. The Perle Remote Client can operate
as a bridging client as well as a routing client.
The Client establishes a WAN connection to the Server. Once a connection has been
established with the PC Client, the Perle Server encapsulates LAN frames destined
for the PC in PPP. It then transmits them to the PC client software over the WAN
connection. The PC client strips off the PPP and delivers the frames to the NDIS or
ODI (Multilink Interface Driver - MLID) Client software which then deliver the
frames to a higher level protocol. In turn, higher level protocols on the PC deliver
frames to the Perle supplied NDIS or ODI (MLID) client software which
encapsulates them in PPP and transmits them to the Perle Server over the WAN
connection. The Server strips off the PPP and transmits the frame over the LAN
connection.
Apple Remote Access Client
The network protocol, AppleTalk, and the WAN protocol, Apple Remote Access
(ARA) are specific to the Apple network environment.
For messages originating from the Macintosh client, the routing client will
encapsulate the AppleTalk protocol in an ARA frame. The Server will remove the
ARA header, process the AppleTalk header, and based on the addressing
information supplied at the protocol level will attach the appropriate MAC header.
The frame is then forwarded to the LAN.
For messages coming from the LAN and intended for a Macintosh client, the Perle
Server will remove the MAC header, process the AppleTalk headers and based on
the addressing information at the protocol level, forward the frame to the appropriate
Macintosh client by encapsulating the message within an ARA frame.