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To operate a device with SNMP, a set of managed information supported by the device, which is usually called a managed object (MO), requires a definition. In SNMP, it is defined as a Management Information Base (MIB). If the device supports SNMP, specify which MIBs are supported in the Feature, and the Manager can collect information based on the MIBs. In this post, I will briefly look at MIB. MIB Overview MIB is a text file written in ASN.1 syntex. Since it is a standard syntex, it can interpret either standard MIB or private MIB. Taking RFC 1213 (MIB-2) as an example, objects are defined as shown below. sysUpTime OBJECT-TYPE               SYNTAX  TimeTicks               ACCESS  read-only               STATUS  mandatory               DESCRIPTION                       "The time...

Simple Network Management Protocol (SNMP) is a Management Protocol most used in network management systems. More than 70% of the world's network equipment supports SNMP, and as it has a long history, it is easy to develop and verify with various tools and libraries that have already been verified.   On the other hand, the simple structure of GET, SET, and NOTIFICATION is not easy to standardize, and it is difficult to implement various OAM functions. There are many standard MIBs defined by IETF(RFC xxxx), and large equipment manufacturers basically support them, but m ost of the MIBs required for operation are supported as private MIBs, and the main functions are often vendor specific.   As a result, Service Providers requested a standardized operation plan, which became the background for NETCONF and others. Nevertheless, since SNMP is still the most widely used protocol, so it is essential to understand the management system. The history of SNMP As the Internet based...

First of all, NMS is an abbreviation for Network Management System, and EMS is an abbreviation for Element Management System. TMN, a very old standard document, describes the two as concepts such as NM, EM, and NE. We will look at the relevant standard documents when there is an opportunity in the future, and first, let's look at a schematic concept. In order to efficiently operate and manage network equipment, NMS and EMS suitable for the service area are required. In general, in the case of wired networks, NMS is often operated alone, and in the case of mobile communication networks, EMS is required in addition to NMS. In this article, we will examine the concept of the overall management system and explain the differences between NMS and EMS. Management System refers to a GUI system that performs network management functions, usually represented by FCAPS. Here, FCAPS means the following five functions. l   Fault Management  l   Configuration Management l   Accou...