Random early detection (RED) is associated with which class of service component?
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Random Early Detection (RED) is a queuing mechanism that is associated with the queuing class of service (QoS) component.
Queuing is a process of managing network traffic by separating packets into different queues based on their priority, and then servicing those queues in a specific order. The aim of queuing is to avoid congestion, which occurs when there is more traffic than the network can handle. Congestion leads to packet loss, increased latency, and poor network performance.
RED is a congestion avoidance mechanism that helps prevent network congestion by randomly dropping packets before a queue becomes full. By dropping packets before a queue becomes full, RED reduces the likelihood of tail drop, which is when a router drops all packets in a queue once the queue is full. Tail drop can cause a burst of packet loss, which can further congest the network.
RED works by monitoring the average queue length and dropping packets based on a set of predefined parameters. RED uses a weighted random early detection algorithm to drop packets, which means that packets with a lower priority have a higher chance of being dropped than packets with a higher priority. By dropping lower priority packets, RED ensures that the network resources are available for higher priority packets, which helps maintain network performance.
In summary, RED is a queuing mechanism that is used for congestion avoidance by dropping packets before a queue becomes full. RED is associated with the queuing class of service (QoS) component.