CBQ stands for Class-Based Queueing. It is a network traffic management mechanism used in computer networks. CBQ is a feature implemented in routers and network switches to provide efficient and fair allocation of bandwidth to different classes of traffic.
CBQ operates by dividing network traffic into different classes or queues based on predefined criteria such as the type, priority, or source/destination address. Each class is assigned a certain amount of bandwidth and defined quality of service (QoS) parameters like latency, throughput, and packet loss. CBQ then uses scheduling algorithms to allocate available bandwidth among the different classes of traffic.
The primary goal of CBQ is to ensure that different types of traffic receive fair treatment based on their priority and requirements. It allows network administrators to control and prioritize specific types of traffic over others. For example, real-time traffic like voice or video data can be given higher priority and allocated more bandwidth to ensure minimum delay and smooth transmission.
CBQ enables efficient utilization of network resources, improves performance, and prevents congestion by managing and distributing network traffic intelligently. It is commonly used in enterprise networks, where multiple applications, protocols, and users coexist, ensuring that critical and time-sensitive traffic receives the necessary resources.
Overall, CBQ is a network traffic management mechanism that divides traffic into different classes, assigns resources and priorities to each class, and efficiently manages bandwidth to ensure fair and optimal performance across various types of network traffic.
