在物理网络层控制路由需要将策略嵌入到拓扑中。
Controlling routing at the physical network layer embeds policy into topology.
每个层都使用下面一层的服务，这使得顶层协议能够在物理网络上传输消息。
Each layer employs the services of the layer underneath, which enables a top layer protocol to transmit messages over the physical network.
当设备被模拟(比如虚拟网络适配器)时，模拟提供一个抽象层以抽象物理硬件。
When devices are emulated, such as virtual network adapters, the emulation provides a layer to abstract away the physical hardware.
对等系统常常实现为一个抽象的覆盖网络，构建于原生或物理网络之上的应用程序层上。
Peer-to-peer systems are often implemented as an abstract overlay network built at the application layer on top of the native or physical network.
但是，架构师需要了解物理层以避免网络瓶颈和安全暴露。
Architects, however, need to understand the physical layer in order to avoid network bottlenecks and security exposures.
通过在物理层之上的逻辑层中定义路由，可以在相同网络结构上实现许多重叠的拓扑。
With routing defined in a logical layer above the physical network, it is possible to have many overlapping topologies implemented on the same network fabric.
基础架构层——物理硬件、网络和操作系统。
Infrastructure Layer - physical hardware, network and operating systems.
各种网络设备驱动程序在接口层运行，该层从物理链路接收数据，并向物理链路传输数据。
The various network device drivers run at the interface layer, which receives and transmits data from and to the physical link.
云计算是由多种分层的要素组成，从最基本的物理层存储和服务器基础架构开始，以及应用层和网络层。
Cloud computing is made up of a variety of layered elements, starting at the most basic physical layer of storage and server infrastructure and working up through the application and network layers.
称为物理层协议的两个底层处理网络电缆上的实际信号传输。
The two bottom layers, called the physical layer protocols, take care of the actual signal transfer over the network cable.
每一层都使用它下面的层，因此网络层不必担心网络上的每次跳转如何使用物理和数据链接等问题。
Each layer USES the layers beneath it, so the network layer does not need to worry about how each hop on the network USES the physical and data link layers and so forth.
同样，如果物理层的所有通信中断了，HA仍然会认为网络是正常的，因为它仍然能够通过Hypervisor上的虚拟lan路由通信流。
Likewise, if all communication at the physical layer was lost, HA would continue to think the network was OK, as it is still able to route traffic across the virtual LAN on the Hypervisor.
无线传感器网络协议栈由物理、数据链路、网络、传输和应用五层组成。
The protocol stack of wireless sensor networks is composed of physical level, logical link control level, network level, transport level and application levels.
针对超级电容器的物理特性，提出了双电层电容器的三种等效模型，即串联rc模型，非线性RC网络模型和线性RC网络模型。
For super capacitor of physical characteristics, there are three model of the Electric Double Layer capacitor that series RC model, nonlinear RC network model and the linear RC network model.
通过提取网络层和物理层中的一些信息，可以改进MAC(介质访问控制)层协议的设计。
The design of MAC protocol can be improved by extracting information in network and physical layers.
文中对控制网络的物理层接口、拓扑结构、通信协议等作了较为详细的说明。
The topology of the network, the physical interface and the communication protocol are also described.
物理网络拓扑从第二层反映出交换机之间的连接关系，它在网络管理系统中具有重要的地位。
Discovering physical network topology is an important function of network management system because it depicts links between switches at layer2.
应用层安全主要研究对攻击、病毒的防护，并设法实现应用层、网络层以及物理层结合的溯源。
Application layer research is mainly focused on protection against attacks and virus, and managing to realize the combination of application layer, network layer and physical layer.
通过物理层进行无线射频注入是实现更高层次网络对抗的基础。
Wireless RF injection through physical layer is the basis for higher layer network countermeasure.
介绍了一种利用有线电视网络进行数据通信的回传通道的高级物理层技术。
This article introduces an Advanced Physical Layer technology to the data return path over cable network.
光突发交换网络实验平台上的TCP传输实验还表明了OBS物理层带来的额外延时对上层TCP带宽有极大的影响。
TCP transmission experimental results also point out that the extra round trip time caused by OBS layer has great influence on the available TCP bandwidth.
研究了CAN网络协议的技术规范，描述了CAN总线的分层结构中的数据链路层和物理层。
Technical regulation of CAN Bus network is lucubrated and Data Link Layer and Physical Layer in hierarchy structure of CAN Bus is described.
本文选择了四层结构作为协议栈体系结构的雏形，即：物理层、数据链路层、网络层、应用层。
The thesis chooses the four-layers structure as the rudiment of our protocol stack system, which includes physical layer, data link layer, network layer and application layer.
使用物理层网络控制芯片配合微控制器片内集成的EMAC以太网控制器，提供对网络传输的支持。
The system employs a Fast Ethernet Physical Layer Chip and EMAC embedded in MCU to support network transmission.
本文将针对无线协同网络着重研究一种物理层网络编码技术—复数域网络编码（CFNC）。
This thesis will focus on research for wireless cooperative networks a physical layer network coding techniques—complex field network coding (CFNC).
服务器指吸取床边监护装备数据的仪器，在这里为本体系，监护网络体系的物理层采用RJ45方法接茬和五类非屏蔽双绞线毗连。
Server refers to receive bedside monitoring devices, data devices, in-system. Monitoring system was carefully observed in the physical layer using RJ45 and five non-shielded cable way linking.
无线链路的不可靠性和物理层广播特性非常适合采用编码，为网络编码的应用提供了一个良好的平台。
The unreliability of wireless links and the broadcast property of physical layer provide a good platform for the application of network coding in wireless networks.
该算法通过节点最短队列长度，把网络层、MAC层和物理层协同起来。
It is based on the shortest queue length of nodes and designed by crossing network layer, MAC layer and physical layer.
文中对如何以物理层网络芯片和EMAC控制器实现网络传输做了阐释。
This thesis gives a thorough explanation of how the EMAC and PHY chip implement the network transmission.
该公司在这些模块之外还有什么计划，尚不得而知，但Luxtera可以继续将该技术留给自己的硅基网络物理层（PHY）元件。
The company's plans beyond these modules are unknown, but Luxtera could continue to reserve the technology for its own silicon for networking physical-layer (PHY) components.
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