Another View of OSIMIS Distribution Platform Aspects

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					             The OSIMIS Platform:
         Making OSI Management Simple

George Pavlou, Kevin McCarthy, Saleem Bhatti, Graham Knight

             DEPARTMENT OF COMPUTER SCIENCE
               UNIVERSITY COLLEGE LONDON
                   INTRODUCTION

• Based on the OSI management model (GDMO / CMIS)
• Fully Object-Oriented development environment in C++
• Similar to emerging distributed systems platforms (e.g. OMG
   CORBA)

• Combines OSI management with ODP concepts, retaining
   ISO/ITU compliance

• Particularly suitable for hierachical distributed management
   (e.g. TMN)
    MULTIPLE TECHNOLOGY SUPPORT


• OSI used as the end-to-end unifying model
• Integrates the Internet SNMP through generic gateways
  (CMIS/P to SNMP translation - NMF IIMC)

• Future additions will include gateways to/from CORBA
  (X/Open / NMF XoJIDM)

• Possibility of operating an OSI management model over
  CORBA (TINA-C) or CORBA over OSI management
         OPERATING ENVIRONMENTS


• ISODE is used as the OSI stack (also for FTAM and
   Directory Service support)

• Also XOM/XMP compatible (without FTAM & Directory)
• Operates on various UNIX variants (SunOS/Solaris, HPUX,
   AIX, Linux)

• A commercial port on Windows NT also exists, possible
   also to port it to real time executives (agent part)
  OSIMIS LAYERED ARCHITECTURE

                     X.700 / X500 space          Inet space

                            Applications


Coord.            SMIB TCL-                                    ASN.1
                      MCMIS
Support   GMS                                                 Support
                     RMIB

                                           DSS   RMIB’
                   CMISE
                                      DASE        SNMP

                      ACSE / ROSE                UDP and
                      and OSI stack              Inet stack



ASN.1 / GDMO      CMIP->SNMP          Generic            DSA / DUAs
   Tools            Tools             Managers


                Tools and generic applications
              OSIMIS COMPONENTS


• Process coordination (scheduling mechanism)
• CMIS/P, DAS/P & SNMP implementations
• Full object-oriented ASN.1 and GDMO support
• Generic agent infrastructure (the Generic Managed System)
   that offers a high-level managed object plug-in facility

• High-level generic manager support (Remote & Shadow MIB)
        OSIMIS COMPONENTS (cont’d)
• Interpreted generic manager support in TCL/ITCL
   (TCL-MCMIS)

• Security services (public key and “lightweight” secret key)
   including authentication, intergrity and access control

• Support for multiple functional components in one physical
   component

• Directory Support Service offering addressing, security
   support, location transparency and (eventually) trading

• A set of generic managers (graphical MIB browser etc.)
• A fully generic CMIS to SNMP gateway supported by a
   SNMP SMI to GDMO translator
 THE GENERIC MANAGED SYSTEM MODEL

               Managed objects in agent (“server”) role


                               component “intelligence”

“user” space


          API
                                                          management service
platform space              RMO        RMO                   component


                                               SMO


                 RMO: Resource Managed Object
                 SMO: Support Managed Object
 THE REMOTE AND SHADOW MIB MODELS


                       M”O                          M”O



                 M”                  M”
“user” space
                 O                   O

          API


platform space



M”O: Managing Object
                                       S”RMO              S”SMO
S”RMO: Shadow RMO
S”SMO: Shadow SMO       target management service
                                components
THE DISTRIBUTION PARADIGM

Based on global object / component names


                     The Directory


               DSA         DSA       ...


   I am here                               Where is A?



       Appl. A                       Appl. B
   THE “OBJECT CLUSTER” PARADIGM


• OSI Management projects a “Managed Object Cluster”,
   “Ensemble” (NMF) or “Management Service Component”
   (RACE ICM) paradigm

• The manager-agent model is very similar to the client-server
   distributed systems object model if realised properly

• The added value it brings is GDMO/GRM ie. the possibility
   to specify and access collectively a cluster of co-operating
   objects for problem solving (e.g. TMN OSF)
THE MANAGEMENT SERVICE COMPONENT




   mgmt
  srv comp




                               hierachical organisation




        management interface
DISTRIBUTED MANAGEMENT SERVICE
          COMPONENT


                                      mgmt application e.g. TMN OS




                                                                  A    M

                                API

                                              Distributed           Mgmt
                                               Platform            Platform




   offered mgmt i/f   (local)                   managed object

   accessed mgmt i/f (remote)                    potentially managing object
DISTRIBUTED INTELLIGENCE FACILITIES


• INTELLIGENT REMOTE MONITORING FACILITIES
   -   MONITOR METRIC / SUMMARISATION SUPPORT OBJECTS
   -   INTELLIGENT ALGORITHM-BASED MONITORS

• “POLICY” OBJECTS ARE INVESTIGATED THROUGH A
  TCL-BASED LANGUAGE

   -   ARBITRARY INTELLIGENCE MAY BE DOWNLOADED
   -   LOCAL RESOURCE UTILISATION? ACCESS CONTROL?
                     SUMMARY

• OSIMIS PROVES THE FEASIBILITY OF OSI MANAGEMENT
• DEVELOPED IN RACE (ICM, NEMESYS) AND ESPRIT (MIDAS,
  PROOF) EUROPEAN RESEARCH PROJECTS

• HAS BEEN USED TO BUILD COMPLEX TMN SYSTEMS (ATM
  VPCM, VPN, END-TO-END SERVICE MANAGEMENT)

• FREE ON A NON-COMMERCIAL BASIS, INTENTION IS TO
  MAKE IT SHAREWARE

• DISCUSSION LIST: <osimis@cs.ucl.ac.uk>
  WWW: http://www.cs.ucl.ac.uk/staff/knight/osimis/osimis.html

				
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posted:10/28/2012
language:English
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Jun Wang Jun Wang Dr
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