物理拓扑与逻辑拓扑之间的区别

1.物理拓扑：
物理拓扑指示网络中不同元素的排列。它反映了设备和电缆的物理布局，以形成一个连接的网络。它关注网络的本质，而忽略了诸如数据传输和设备类型之类的细节。节点(计算机)和网络电缆的排列方式取决于网络安装和设置的难易程度。它会根据设备的解决方案影响成本和带宽容量。它考虑了节点的位置及其之间的距离。可以将设备布置成环形(环形拓扑)，或在称为总线拓扑的线路中线性连接。

2.逻辑拓扑：
逻辑拓扑反映了设备及其通信的安排。它是通过物理拓扑传输数据。它与物理拓扑结构无关，而与节点的布置无关。它涉及网络的复杂细节，例如所选的设备类型(交换机，路由器)及其质量，它们会影响数据包传递的速率和速度。逻辑拓扑确保可以在网络内进行调节的最佳流量控制。
数据可以以称为逻辑总线的线性模式流动，也可以以圆形逻辑环的形式流动。

物理和逻辑拓扑之间的区别：

Physical Topology	Logical Topology
Depicts physical layout of network.	Depicts logistics of network concerned with transmission of data.
The layout can be modified based on needs.	There is no interference and manipulation involved here.
It can be arranged in star, ring, mesh and bus topologies.	It exists in bus and ring topologies.
This has major impact on cost, scalability and bandwidth capacity of network based on selection and availability of devices.	This has major impact on speed and delivery of data packets. It also handles flow control and ordered delivery of data packets.
It is actual route concerned with transmission.	It is a high level representation of data flow.
Physical connection of the network.	Data path followed of the network.