1 CMIS/CMIP

2 Network Management Table of Contents CMIS CMIP CMIP vs. SNMP Summary

3 Network Management Introduction The fundamental function of the common management information service element (CMISE) is the exchange of management information between two manager & agent entities CMISE is specified in two parts: The common management information service (CMIS) which is a user interface specifying the services provided The common management information protocol (CMIP) which specifies the protocol data unit (PDU) format and associated procedures

4 Network Management Introduction (2) CMIS/CMIP is a Vehicle for Conveying: Operations on Managed Objects Notifications from Managed Objects Results of Operations Results of Notifications Errors

5 Network Management CMIS/CMIP Standards

6 Network Management OSI Management Architecture ACSE CMIP Agent Process CMIS E lower layers Managing Process CMIS E lower layers FTAM ROSE RO P Management Functions MOs

7 Network Management Features of CMIS Services based on simple Request/Response approach Association Services Operation Services Notification Services Scoping Synchronization Linked Replies Functional Units

8 Network Management Association Services Provided by ACSE Used to negotiate Functional Units and Protocol Versions A-Associate Establishes a management association A-Release Terminates a management association (in an orderly manner) A-Abort Terminates a management association (in an abrupt manner)

9 Network Management Operation Services (1) M-GET Used to retrieve the values of one or more attributes of one or more MOs Scoping/Filtering, Linked Replies and Synchronization Confirmed service only M-SET Used to replace the values of one or more attributes of one or more MOs Scoping/Filtering, Linked Replies and Synchronization May be Confirmed or Unconfirmed

10 Network Management Operation Services (2) M-ACTION Conveys Object Class/Instance, Action Type and optional action-specific information Meaning dependent on MO action specification Scoping/Filtering, Linked Replies and Synchronization May be Confirmed or Unconfirmed M-CREATE Permits creation of new instances of object classes Permits specification of default values (of attributes, explicitly and/or by reference) Permits explicit or automatic instance naming Confirmed service only

11 Network Management Operation Services (3) M-DELETE Permits deletion of object class instances Scoping/Filtering, Linked Replies and Synchronization Confirmed service only M-CANCEL-GET Permits a linked GET response to be terminated Confirmed service only

12 Network Management Notification Service M-EVENT-REPORT Conveys Object Class/Instance, Event Type and optional event-specific information Meaning dependent on MO notification specification May be Confirmed or Unconfirmed

13 Network Management Scoping and Filtering Scoping selects objects to be operated upon within the managed object containment tree Scope defined relative to a base managed object: –Base object only –Nth level subordinate objects only –Base object plus all of its subordinates (entire subtree) Filtering permits objects within scope to be selected according to test criteria Operation applied to all selected objects Multiple (Linked) Replies used if more than one object selected

14 Network Management Filtering Permits Testing of Attribute Values for *=, >=, <= *Substring values *Presence Tests may be combined using Logical operators –AND, OR, NOT

15 Network Management Scoping and Filtering base object nth level entire sub-tree Containment tree

16 Network Management Synchronization Applies only to operations on Multiple Objects (via Filtering) Atomic Synchronization –“All or Nothing” constraint Best Effort Synchronization –no guarantees

17 Network Management Linked Replies Permits Multiple Responses to a Single operation request Applicable only if Scoping/Filtering used CANCEL GET permits abrupt termination of Linked Get responses

18 Network Management Features of CMIP Based on ROSE (Remote Operation Service Element) Uses RO-INVOKE, RO-RESULT, RO- ERROR, RO-REJECT Makes use of ACSE (Association Control Service Element) -- Connection-Oriented Presentation Services Uses A-ASSOCIATE, A-RELEASE, A- ABORT, P-DATA services

19 Network Management Services Provided by and Used by CMISE System-management application-service element (SMASE) System-management application-service element (SMASE) Common management information service element (CMISE) Common management information service element (CMISE) Presentation service Association-control-service element (ACSE) Association-control-service element (ACSE) Remote-operations-service element (ROSE) Remote-operations-service element (ROSE) A-Associate A-Release A-Abort A-Associate A-Release A-Abort M-EVENT-REPORT M-GET M-SET M-ACTION M-CREATE M-DELETE M-CALCEL-GET RO-Invoke RO-Reject RO-Result RO-Error P-Connect P-Release P-Abort P-Data

20 Network Management Comparison of Frameworks OSI Mgmt (CMIP)Internet Mgmt (SNMP) Information Model Object-Oriented Object-based MIB Language GDMOSNMP SMI Mgmt Entity Interactions Manager-Agent, Manager-Manager Manager-Agent, Manager-Manager Protocol Operations M-Get, M-Set, M-Action M-Create, M-Delete M-Event-Report Get, Set limited Create/Delete Trap MO Addressing MIT with OID Scoping/Filtering MIT with OID at leaves of the tree Management Applications Five Functional Areas Not Specified Standardization Body ITU-T, ISOIETF Features

21 Network Management Summary OSI Systems Management is a collection of standards for network management that includes: management service and protocol definition of management information systems-management functions currently used mostly in Telecommunications Network Management Viewed as the “ultimate” standard for NM but…. Very complex & requires a lot of manpower and h/w, s/w resources to implement and maintain

22 Network Management Fifth Intermediate Report CMIP I. Stergiou A. Sgora Deadline: 08/07/03

23 Network Management End of Seventh Lecture