Bridging Between Remote Sites - 3Com AccessBuilder 500 User Manual

A-4 A A: B R
PPENDIX RIDGING AND OUTING
Some bridges allow address information to be manually configured
into the bridge, provided the automatic learning facility is turned off,
although this will not normally prove necessary unless specific traffic
filtering is required.
You can also configure a number of other features to improve the
performance and operation of the AccessBuilder 500. These include
sophisticated frame filtering techniques so that only certain types of
frame, or those associated with particular work groups, are passed
between specific segments.

Bridging Between Remote Sites

The AccessBuilder 500 is able to send frames between LANs that may
be separated by considerable physical distances. It achieves this by
making use of digital ISDN links. ISDN services are usually operated by
telephone companies (PTTs) or other service providers.
Figure A-1 shows two LAN segments, A and B, which are connected by
a pair of AccessBuilder 500 units, 1 and 2. The type of link between the
two depends on the WAN services available at each of the remote
bridge locations, and the price the network administrator is willing to
pay for those services.
Figure A-1 Simple Remote Bridging