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Methodology for Delivering Status Notifications for Unresolvable Distribution Objects

IP.com Disclosure Number: IPCOM000122207D
Original Publication Date: 1991-Nov-01
Included in the Prior Art Database: 2005-Apr-04
Document File: 2 page(s) / 77K

Publishing Venue

IBM

Related People

Johnson, WJ: AUTHOR [+2]

Abstract

Often within a heterogeneous network, gateways or External Networking Agents (ENAs) are placed between networks that differ in architectural fields which uniquely identify a distribution. The gateway or the ENA is forced into keeping correlation tables that identify the distribution uniquely within the differing networks.

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This is the abbreviated version, containing approximately 52% of the total text.

Methodology for Delivering Status Notifications for Unresolvable
Distribution Objects

      Often within a heterogeneous network, gateways or
External Networking Agents (ENAs) are placed between networks that
differ in architectural fields which uniquely identify a
distribution. The gateway or the ENA is forced into keeping
correlation tables that identify the distribution uniquely within the
differing networks.

      Correlation tables are used to correlate a status notification
by one network object to the distribution as it is identified by
another network. These tables consume massive amounts of computer
storage space. Thus, mechanisms are devised for maintaining these
correlation entries. A problem can occur if the correlation entry is
deleted through normal maintenance before a status is returned by an
external network.

      If the correlation entry is deleted before the corresponding
status is received, then the gateway or ENA will lack a way of
associating the status with the distribution of the native system.
Thus, a user may never receive the notification status of a
particular distribution.  This article describes a mechanism that
allows the user to receive a status notification for a distribution
which cannot be resolved by a gateway or ENA.

      A Requester Service for "mail receipts" which can correlate
notifications on the basis of ambiguous searches could allow a
requester to resolve a status notification. The following sequence
describes a method for an intelligible resolution of uncorrelated
status messages:
1)   The service requesting the Notification of Receipt (or
Confirmation of Delivery) utilizes a date-time stamp portion to
create a Unique Delivery Identifier. This currently occurs in many
existing mail applications.
2)   The ENA or Gateway  utilized the da...