Browse Prior Art Database

Dynamic Switching Between Different LAN Networking Media

IP.com Disclosure Number: IPCOM000123127D
Original Publication Date: 1998-Jun-01
Included in the Prior Art Database: 2005-Apr-04
Document File: 2 page(s) / 83K

Publishing Venue

IBM

Related People

Cheung, RY: AUTHOR

Abstract

A method for switching the LAN networking media dynamically based on some pre-determined criteria is disclosed. The switching itself is transparent to the user, that is, the user does not need to be involved in the switching decision or process.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Dynamic Switching Between Different LAN Networking Media

      A method for switching the LAN networking media dynamically
based on some pre-determined criteria is disclosed.  The switching
itself is transparent to the user, that is, the user does not need to
be involved in the switching decision or process.

      The key to switching the LAN network media without the user's
intervention is to make all LAN networking media look the same to the
networking application via a translating and controlling layer called
Universal Driver.  The Universal Driver sits between the networking
application and the LAN networking media drivers.  The diagram below
illustrates this relationship.
                        +-------------+
                        º Networking  º
                        º Application º
                        +-------------+
                               º
                               º
                        +-------------+
                        º  Universal  º
                        º   Driver    º
                        +-------------+
                               º
          +--------------------+-------------------+
          º                    º                   º
    +-------------+     +-------------+     +-------------+
    º  Networking º     º  Networking º     º  Networking º
    º    Media    º     º    Media    º     º    Media    º
    ºe.g. ethernetº     º   e.g. IR   º     º   e.g. RF   º
    +-------------+     +-------------+     +-------------+

   The Universal Driver appears as one kind of LAN networking
media to the networking application, usually that media is ethernet.
It in turn controls the different LAN networking media drivers
underneath it.  To the LAN networking media drivers, the Universal
Driver pretends to be the networking application.

   The Universal Driver frequently interrogates the underlying
networking media drivers to see which one is actively connected to
the office Network.  If only one is connected, then that one will be
used as the real networking media between the networking application
and the office Network.  If more than one networking media is
available, the Universal Driver will select one based on some
pre-determined criteria.  Usually those are cost and performance of
the connection.  Then the selected...