3com 520 User Manual

Page of 96
 
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Figure A-1   
 
Simple Remote Bridging
 
The OfficeConnect Remote uses FastConnect, its own 
 
protocol, to ensure the most efficient connection 
 
with other OfficeConnect Remote units. However, if 
 
you are connecting to a different type of 
 
bridge/router the standard PPP communications 
 
protocol is required to establish the link. You can 
 
configure outgoing calls to use either FastConnect 
 
or PPP as required. The ISDN port on the 
 
OfficeConnect Remote autosenses the protocol 
 
being used on incoming calls and switches to the 
 
protocol necessary for that connection.
 
If you are using ISDN to connect to different networks, 
 
the two B channels can be used independently to 
 
connect to different networks at the same time.
 
Building a Larger Network
 
Large networks of interconnected LANs can be 
 
established by using multiple bridges as illustrated 
 
in 
 
 
 
The bridges build up their address tables. If the 
 
destination unit is not registered as being accessed 
 
via the bridge’s LAN interface, the frame will not be 
 
placed on LAN A. Therefore, frames passing between 
 
LAN B and LANs C or D will not impact the overall 
 
performance of the LAN.
Rc.bk : RCAPPA.FRM  Page 4  Thursday, July 10, 1997  9:53 AM