Читать книгу Communication Networks and Service Management in the Era of Artificial Intelligence and Machine Learning - Группа авторов - Страница 19

Original TCP/IP network management is based on the Simple Network Management Protocol (SNMP) family. SNMP standardizes the collection and organization of information about devices on an IP network. It is based on the manager/agent model with a simple request/response format. Here, the network manager issues a request and the managed agents will send responses in return. SNMP exposes management data in the form of variables organized in a Management Information Base (MIB) which describes the system status and configuration. These variables can then be remotely queried and manipulated, allowing both the collection of information and the changes in configuration – provided the manager has controlling authorization on such variables. SNMPv1 is the original version of the protocol [4]. More recent versions, SNMPv2c and SNMPv3, feature improvements in performance, flexibility, and especially security [5, 6].

Via this simple approach, an authorized agent can remotely check and change the configuration of devices under its administrative domain, propagating changes, while obtaining an updated picture of the network status. SNMP offers a means thus both to collect information from and to control the network devices, but does not provide any means to define which is the best configuration to deploy.