IBM E16RMLL-I Implementation Guide - Page 784
Management Information Base MIB
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Managed resource A physical element to be managed. Management Information Base (MIB) A logical database residing in the managed system and defines a set of MIB objects. A MIB is considered a logical database because actual data is not stored in it, but rather provides a view of the data that can be accessed on a managed system. MIB See Management Information Base. MIB object A MIB object is a unit of managed information that specifically describes an aspect of a system. Examples are CPU utilization, software name, hardware type, and so on. A collection of related MIB objects is defined as a MIB. N Network topology A physical arrangement of nodes and interconnecting communications links in networks based on application requirements and geographical distribution of users. N_Port node port A Fibre Channel-defined hardware entity at the end of a link that provides the mechanisms necessary to transport information units to or from another node. NL_Port node loop port A node port that supports arbitrated loop devices. O Open system A system whose characteristics comply with standards made available throughout the industry, and therefore can be connected to other systems that comply with the same standards. P Point-to-point topology This consists of a single connection between two nodes. All the bandwidth is dedicated for these two nodes. Port An endpoint for communication between applications, generally referring to a logical connection. A port provides queues for sending and receiving data. Each port has a port number for identification. When the port number is combined with an Internet address, it is called a socket address. Port zoning In Fibre Channel environments, port zoning is the grouping together of multiple ports to form a virtual private storage network. Ports that are members of a group or zone can communicate with each other but are isolated from ports in other zones. See also LUN masking and subsystem masking. Protocol The set of rules governing the operation of functional units of a communication system if communication is to take place. Protocols can determine low-level details of machine-to-machine interfaces, such as the order in which bits from a byte are sent. They can also determine high-level exchanges between application programs, such as file transfer. 754 IBM Tivoli Storage Manager Implementation Guide