Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Supporting Advanced Peer-to-Peer Networking Session Services Extensions Protocols over non-Systems Network Architecture Transport Networks

IP.com Disclosure Number: IPCOM000118251D
Original Publication Date: 1996-Nov-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 8 page(s) / 339K

Publishing Venue

IBM

Related People

Bollella, G: AUTHOR [+5]

Abstract

Disclosed is an extension to the architecture of Multiprotocol Transport Networking (MPTN) to support all types of Systems Network Architecture (SNA) applications on non-SNA transport networks.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 17% of the total text.

Supporting Advanced Peer-to-Peer Networking Session Services Extensions
Protocols over non-Systems Network Architecture Transport Networks

      Disclosed is an extension to the architecture of Multiprotocol
Transport Networking (MPTN) to support all types of Systems Network
Architecture (SNA) applications on non-SNA transport networks.

      Various products based on MPTN architecture address the problem
of running SNA applications on Transmission Control Protocol/Internet
Protocol (TCP/IP) networks.  Products that extend this support to
Internetwork Packet Exchange (IPX) and other nonnative (non-SNA)
transports are also in the works.  MPTN architecture addresses the
problem of how independent LU 6.2 traffic should flow over nonnative
transport networks.  This, coupled with the dependent Logical Unit
(LU) requester/server (DLUR/DLUS) solution, is used to support
dependent LU traffic over TCP/IP.  The architecture has also been
extended to provide downstream LU support over nonnative transport
networks. This  enables an SNA gateway that performs PU concentration
(e.g., a Communications Manager (CM/2) gateway) to communicate
nonnatively with a  downstream node with one or more dependent LUs,
without DLUR/DLUS.

      With the current MPTN architecture and the functionality
provided by DLUR and DLUS, the following pieces of the dependent LU
puzzle work over TCP/IP:
  o  A node with DLUR and a node with DLUS can establish the
      independent LU 6.2 control sessions over TCP/IP.  System
      Services Control Point (SSCP)-PU and SSCP-LU protocols
      are encapsulated as data on these sessions.
  o  The Primary Logical Unit (PLU) can send a dependent LU bind
      to the DLUR node, over TCP/IP.  Note that the Secondary
      Logical Unit (SLU) may be of the DLUR node, or if the DLUR
      node is also a PU concentrator, the SLU may be on another
      node.  If the PLU is on the DLUS node, the dependent LU
      BIND processing flows between the DLUS and the DLUR nodes,
      using MPTN mechanisms over TCP/IP, and is similar to the
      flows for independent LU 6.2 session setup over TCP/IP.  If
      the PLU is on an Advanced Peer-to-Peer Networking (APPN) or
      subarea node with connectivity to the DLUS node (the DLUS
      node is an Interchange Node in the latter case), then the
      DLUS node ensures that the dependent LU BIND is routed
      through it, and as before, BIND processing over TCP/IP is
      similar to that for LU 6.2 sessions.
  o  If the node with DLUR is also an SNA gateway
      (PU concentrator), it can establish logical links over
      TCP/IP with one or more downstream nodes.  Once such a
      link is set up, the SNA gateway can setup SSCP-PU and
      SSCP-LU sessions over TCP/IP, using mechanisms similar
      to those used for LU-LU session setup.  LU-LU session
     ...