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.

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.

Mar 3, 2015 · To answer your question directly, the terms VOQ and VQI (virtual output queue vs index) are sometimes used interchangeably, and that is ok. The VOQ is a queue (SET) that represents a 10G entity in the system.

Junos and PTX Series hardware CoS features use virtual output queues on the ingress to buffer and queue traffic for each egress output queue. The PTX Series router supports up to eight egress output queues per output port (physical interface).

Rather surprisingly, we find a very simple and fully local algorithm FLGS (for fully local Gale-Shapley) which, at a speedup of 2, emulates an output-queued switch implementing a number of different output link scheduling algorithms such as weighted round robin and strict priority.

Each port can buffer at most 1 MB of packets divided equally across all the active queues in a queue profile. For example, using the default eight-queue profile, each virtual output queue (VOQ) can buffer a maximum of 128 KB of packets.

input queues are of the type of VOQ memory (Virtual Output Queuing), and in the model they act as input buffers. They are the FIFO queues, their principle consists in that the memory of each input port is divided into N virtual queues, while N is the number of ports and each queue contains only data designed for the port.

The switch uses a virtual output queue (VOQ) architecture where most packet buffering occurs on the ingress line module. Traffic destined for one port (unicast), uses different buffering and scheduling than traffic destined for multiple ports (flood).

A ToR’s usual function is the Virtual Output Queues (VOQs), which is the prevalent solution for the head-of-line blocking problem of the DC switches. An effective VOQs architecture improves the DC’s performance by reducing the frames communication latency and it is efficient with respect to the implementation cost.

Jan 27, 2024 · 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: What is VOQ?