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

1

CMIS/CMIP

Network Management 2

Table of Contents

CMIS CMIP CMIP vs. SNMP Summary


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


Introduction (2)

CMIS/CMIP is a Vehicle for Conveying: Operations on Managed Objects Notifications from Managed Objects Results of Operations Results of Notifications Errors


CMIS/CMIP Standards

Title ISO ITU-TCommon Management Information 9595 X.710Service Definition

Common Management Information 9596-1 X.711Protocol Specification


OSI Management Architecture

ACSE

CMIP

AgentProcess

CMISE

lower layers

Managing

Process

CMISE

lower layers

FTAM

ROSE ROSE

ROP

Management

Functions

MOs


Features of CMIS

Services based on simple Request/Response approach Association Services Operation Services Notification Services

Scoping Synchronization Linked Replies Functional Units


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)


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



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



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


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


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


Filtering

• Permits Testing of Attribute Values for* =, >=, <=* Substring values* Presence

• Tests may be combined using Logical operators– AND, OR, NOT


Scoping and Filtering

base object

nth level

entire sub-tree

Containment tree


Synchronization

• Applies only to operations on Multiple Objects (via Filtering)

• Atomic Synchronization– “All or Nothing” constraint

• Best Effort Synchronization– no guarantees


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


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


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 servicePresentation service

Association-control-serviceelement (ACSE)

Association-control-serviceelement (ACSE)

Remote-operations-serviceelement (ROSE)

Remote-operations-serviceelement (ROSE)

A-Associate A-ReleaseA-Abort

A-Associate A-ReleaseA-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


Comparison of FrameworksOSI Mgmt (CMIP) Internet Mgmt (SNMP)

InformationModel

Object-Oriented Object-based

MIB Language GDMO

SNMP SMI

Mgmt Entity Interactions

Manager-Agent,Manager-Manager

Manager-Agent,Manager-Manager

ProtocolOperations

M-Get, M-Set, M-ActionM-Create, M-DeleteM-Event-Report

Get, Setlimited Create/DeleteTrap

MO AddressingMIT with OID Scoping/Filtering

MIT with OID at leaves of the tree

ManagementApplications Five Functional Areas Not Specified

StandardizationBody

ITU-T, ISO IETF

Features


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


Fifth Intermediate Report

CMIP I. Stergiou A. Sgora

Deadline: 08/07/03


End of Seventh Lecture

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

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