2015年7月26日 · 本章介绍的VOQ是一种新型的QoS机制，目的是为了解决著名的交换机HoL难题。 但VOQ强烈依赖于调度算法，例如，一个48口的交换机，每个端口都要维护48-1个FIFO缓存队列，

Virtual output queueing (VOQ) is a technique used in certain network switch architectures where, rather than keeping all traffic in a single queue, separate queues are maintained for each possible output location.

An Integrated VOQ Switch is a system consisting of several Line cards populated with Switch devices and Fabric Cards populated with Fabric devices. The Line Cards switches are connected to network ports on one side and to the Fabric devices on the other side. The Fabric device provides full connectivity between all switch devices.

VOQ（虚拟输出序列）是一种 存储结构，由FIFO与RAM以及逻辑结构组合构成。 在一些数据应用场景中能够有效存储数据并且能够及时输出，避免阻塞。 一句话来说VOQ的优点在于：共享存储，较少存储资源，避免数据阻塞，提高数据输出效率。 2、为什么FIFO会有数据阻塞，而VOQ不会有数据阻塞? 生活举例如下：在一条可以右转和直行的道路上，如果前面的直行车在等红路灯，虽然右转线已空闲，但是由于直行车的阻塞后面的右转车辆就只能等待。 FIFO 也会出现这种情 …

Virtual output queue (VOQ) architecture takes a different approach: Instead of separate physical buffers for input and output queues, the switch uses the physical buffers on the ingress pipeline of each Packet Forwarding Engine (PFE) chip to store traffic for every egress port.

虚拟输出队列 （voq） 架构采用不同的方法： 交换机使用每个数据包转发引擎 （PFE） 芯片入口管道上的物理缓冲区来存储每个出口端口的流量，而不是为输入和输出队列提供单独的物理缓冲区。

The switch services the replication queues strictly at the rate of 100 G. For ports on the same switch, pointers to the same packet are placed in the VOQ for each destination port. For ports on remote VSF member switches, only one copy of the packet data is moved across the VSF link to the destination replication VOQ to optimize link bandwidth.

voq 是输入队列（缓冲区）的集合，用于接收和存储发往一个出口端口上一个输出队列的流量。每个出口端口上的每个输出队列都有自己的专用 voq，该 voq 由向该输出队列发送流量的所有输入队列组成。

2024年1月27日 · VOQ, or Virtual Output Queuing, is a networking concept primarily used in high-performance and large-scale network switches. It plays a crucial role in managing data traffic within network switches. Here’s an overview of how it works and why it’s needed:

2003年9月29日 · In this tutorial article, we present an overview of switch matrix scheduling for VOQ IQ switches with crossbar switch fabrics. We then describe what we believe will be the next generation of high-speed crossbar switches: the evolution of IQ switches to combined input and crossbar queued (CICQ) switches.