In telecommunications, a protocol data unit (PDU) is a single unit of information transmitted among peer entities of a computer network. It is composed of protocol-specific control information and user data.

A protocol data unit (PDU) is the basic unit of exchange between entities that communicate with a specified networking protocol. It's important for network professionals to use the correct PDU when they work with a multilayer protocol stack and manage protocol interactions.

2024年12月5日 · PDU：指协议数据单元（Protocol Data Unit），它是在不同网络层次之间数据传递的单位。具体来说，物理层的PDU是比特流（bit），数据链路层的PDU是数据帧（frame），网络层的PDU是数据报（packet），传输层的PDU是数据段（segment），而其他更高层次的PDU则是数据（data）。

2022年4月29日 · Each layer’s information is referred to as a Protocol Data Unit (PDU). Along with the data, it contains protocol-specific control information. Each layer will add (or delete) its protocol information as a PDU moves down (or up) each layer. The PDU is given a different name at each layer to represent its role.

在机房及通信硬件领域中常见的PDU，指的是机柜电源插座，是英文"Power Distribution Unit"的缩写，即电源分配单元。 通过工业标准的PDU可使网络产品的电源安全提高，满足了重要设备电源输入的要求。 电源插座是所有设备用电的最后一道关口，如果它不够稳定，且缺乏足够的保护功能，将有可能导致昂贵设备被毁，甚至整个系统崩溃。 因此，电源插座的安全稳定性是机房设备和整个数据中心系统价值的有力保障之一。 二、机房PDU的类型主要有哪些？ 近年来，随着市场 …

What is a power distribution unit (PDU)? A power distribution unit (PDU) is a device for controlling electrical power in a data center. The most basic PDUs are large power strips without surge protection. They are designed to provide standard electrical outlets for data center equipment and have no monitoring or remote access capabilities.

PDU（Power Distribution Unit）即电源分配单元，是一种机房的专用电源分配设备。PDU的应用场景广泛，特别是在数据中心、服务器机房、网络中心等需要精细电力管理的场合。以下是对PDU的详细介绍： 一、PDU的基本功…

智能PDU （Intelligent PDU或Smart PDU）是一种高级电源分配单元（PDU），专为 数据中心 和其他需要精细电力管理的环境设计。以下是关于智能PDU的详细介绍： 一、定义与功能. 智能PDU不仅仅是为数据中心内的IT设备配电，它还能够监视、管理和控制多个设备的功耗。

2025年1月6日 · What is a PDU in Networking? Protocol Data Units (PDUs) are standard communication units used in a network to carry information from one entity to another. They belong to a particular level or layer of the OSI (Open Systems Interconnection) model and contain the necessary information for that specific layer to operate.

2024年12月31日 · A power distribution unit (PDU) is essential for delivering reliable power to IT equipment within a rack. Unlike a basic power strip, a PDU is specifically eng...