Computer networks can be observed and controlled by means of network management applications. These applications use the management operations as supported by a service, e.g. a network management service based on version 2 of the Simple Network Management Protocol (SNMPv2) or the Common Management Information Service (CMIS). In this report the implementation of a network management service is described. The service derived from the SNMPv2 proposed standards of the Internet Engineering Task Force (IETF) became concrete after discussions with the UT-SNMPv2 working group and is specified in [Tog 93]. The main part of this thesis consists of the description of parts of the implementation. These parts are the Basic Encoding Rules (BER), initial Data Encryption Standard (DES) and the Party Management Information Base (Party MIB). Of these parts, implementation decisions and problems are described. After testing, conlusions and recommendations are made concerning the current implementation. I...

Computer networks are observed and controlled by means of network management applications. These network management tools use the management operations as supported by an underlying service, e.g. a network management service based on version 2 of the Simple Network Management Protocol (SNMPv2). The Tele-Informatics and Open Systems (TIOS) group of the Computer Science department of the University of Twente has started a SNMPv2 project group in 1993 to implement the protocol. The main part of this M.Sc. thesis constitutes the implementation of the lower level functions (BER, DES & MD5) of SNMPv2. These functions were already implemented by other students but the functions could be improved (e.g. better performance). This thesis describes the different steps of the 'renewed' implementation of the lower level function. The implementation took place in a UNIX environment using ANSI C as the programming language. Further, this report considers the testing of the lower level functions and an...

The discipline group of Tele-Informatics and Open Systems (TIOS) at the faculty of Computer Science is working on the implementation of the Simple Network Management Protocol version 2 (SNMPv2). The SNMPv2 protocol is based on the specifications of the Request for Comments (RFCs) 1441 till 1452. At the moment, the SNMPv2 protocol has the Proposed Internet Standard status. Goals of the UT_SNMP project: . Get working experience in implementing Internet Protocols. . Contribute to the process of standardization of SNMPv2. . Stimulate the co-operation between the discipline groups within TIOS. . Coming in contact with the Internet world. At the moment, the UT_SNMP project has a simplified implementation of the protocol. This implementation has a modular structure. The goal of this assignment is to analyse, design, and implement the Meta Management (Management of SNMPv2) functionality. Meta Management is executed through special Meta Management applications. Meta Management have to control t...

This thesis describes a high level management Application Programming Interface (API) for the Simple Network Management Protocol version 2 (SNMPv2). The API is described in two parts. First, the basic API is described. The basic API is for the manager and the agent. The basic API allows to split agents and managers over one or more processes. Second, an enhanced API is described. Only the manager can use the enhanced API. The enhanced API is an extension of the basic API. Functionality of the enhanced API is for instance operations on tables and reliable operations. In order to design the API an SNMPv2 service specification is made. This service specification abstracts from details related to the administrative model of SNMPv2. The SNMPv2 service specification is used to derive a part of the API. A graphical model is described in this thesis. This graphical model allows to visualize management identification in a 3 dimensional space. This model gives intuitively insight in some aspects...

The integration of systems from various suppliers in communication networks, requires standardization of network management protocols. The Simple Network Management Protocol (SNMP) was developed for the Internet protocol suite in 1988 and has found several implementations since. To cover the deficiencies encountered in this protocol, a new version was developed. This version, SNMPv2, is currently in standardization phase and at the University of Twente an attempt is made to implement the protocol. This thesis covers the implementation of the partyMIB module and the SNMPv2MIB module which have been identified in the modular approach which is followed in the protocol implementation. The implementation process started with the identification of the interfaces for these modules. One interface part supports the SNMPv2 protocol functioning. The other interface part supports the management operations on information available in these modules. A framework has been designed to support manageme...