Browse Prior Art Database

Function and Performance Enhancement for a Dynamic Routing Network

IP.com Disclosure Number: IPCOM000121581D
Original Publication Date: 1991-Sep-01
Included in the Prior Art Database: 2005-Apr-03
Document File: 2 page(s) / 74K

Publishing Venue

IBM

Related People

Cheng, TD: AUTHOR [+2]

Abstract

Disclosed is an idea for operating a network. The claim is that any communication port should always be ready for high priority or time- critical operations; therefore, extra facilities for every port should always be available to accommodate this requirement. If there is a hub in the network, then extra facility is needed for the hub to support the requirement too. In other words, extra linking facilities between ports and hub are needed to handle special operations.

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Function and Performance Enhancement for a Dynamic Routing Network

      Disclosed is an idea for operating a network.  The claim
is that any communication port should always be ready for high
priority or time- critical operations; therefore, extra facilities
for every port should always be available to accommodate this
requirement.  If there is a hub in the network, then extra facility
is needed for the hub to support the requirement too.  In other
words, extra linking facilities between ports and hub are needed to
handle special operations.

      One example to implement this idea is to provide an extra
receiving unit on the node and an extra transmitting/routing unit on
the central hub.  This implementation introduces a method to create
two receiving units for every port on each node and two
transmitting/routing units on each port of the central hub.  On a
node, a receiving unit (Unit-1) is paired with a transmitting unit to
carry out the full duplex interlocked protocols and the other
receiving unit (Unit-2) is dedicated for receiving broadcasting or
multicasting messages.  Based on the format of the frame, messages
will be delivered to Unit-1 or Unit-2.  Since the two receiving units
can share the same port address, there is little impact on protocols.
An alternative to take advantage of the configuration is to dedicate
one receiving unit for interlocked operations and the other one for
asynchronous operations.  The transmitting unit on the node can be
used on both operations as long as th...