Browse Prior Art Database

Address Assignment for Nodes

IP.com Disclosure Number: IPCOM000105335D
Original Publication Date: 1993-Jul-01
Included in the Prior Art Database: 2005-Mar-19
Document File: 2 page(s) / 87K

Publishing Venue

IBM

Related People

Hefferon, EP: AUTHOR [+2]

Abstract

A communication network is an arrangement of network components connected by links. The collection of facilities within a component that can be accessed by means of a given link connection to that component is called a node. A node name is associated with each link connection to each component of a communications network. From the standpoint of the programs and hardware of the network, these nodes names are multi-bit binary codes that are used to route messages between nodes. These node names should not be confused with the names that are associated with the components themselves which consist of words or numbers that are easy to use from the standpoint of people who work with the components.

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

Address Assignment for Nodes

      A communication network is an arrangement of network components
connected by links.  The collection of facilities within a component
that can be accessed by means of a given link connection to that
component is called a node.  A node name is associated with each link
connection to each component of a communications network.  From the
standpoint of the programs and hardware of the network, these nodes
names are multi-bit binary codes that are used to route messages
between nodes.  These node names should not be confused with the
names that are associated with the components themselves which
consist of words or numbers that are easy to use from the standpoint
of people who work with the components.

      Messages that are routed between nodes commonly have a header
with fields for names of the sender node and the receiver node.  Each
node keeps a table of the names of other nodes in the system for use
in the sender node field.

      Except for certain rules regarding node name uniqueness and
reserved names, there are normally no restrictions regarding the node
name that is assigned to any given node.  A notable exception exists
when nodes are attached (by means of links) to dynamic switches.  A
dynamic switch has multiple ports and requires that the node that is
attached to any given port be assigned the node name that the dynamic
switch associates with that port.

      Normally, a node name is created and assigned to a network node
by service personnel who set switches, or it is assigned during
manufacture and never changed.

      It would be convenient if node names could be assigned
electronically without manual intervention and in a way that is more
dynamic and therefore, more yielding to configuration changes.  A
supervisory node could internally assign a node name to itself and
assign a node name to the node on the other end of the link by
sending a message on the link.

      If a supervisory node is not connected by a link to a dynamic
switch, it adopts any normal node name for itself.  Next, the
supervisory node assigns any normal node name to the node at the
other end of the link by sending a message containing its adopted
node name in the sender name field and the node name to be assigned
to the other node in the receiver name field.  The node that receives
the me...