TCP Congestion Control algorithms (Tahoe, Reno, Cubic) TCP Congestion Control algorithms are mechanisms employed by the Transmission Control Protocol (T...
TCP Congestion Control algorithms (Tahoe, Reno, Cubic)
TCP Congestion Control algorithms are mechanisms employed by the Transmission Control Protocol (TCP) to manage network bandwidth and prevent network congestion. These algorithms work by slowing down the flow of data onto a network segment when the available bandwidth is limited, ensuring that all active connections have a fair chance of receiving data.
Tahoe algorithm is an early congestion control algorithm that was implemented in the 1980s. It operates on a per-flow basis and uses a slow start mechanism to gradually increase the congestion rate. When the network bandwidth is available, new connections are allowed to join the queue, but existing connections are starved by setting a loss rate.
Reno algorithm is a more advanced congestion control algorithm that was introduced in the 1990s. It operates on a per-flow basis as well but uses a different approach to manage the flow rate. Reno uses a feedback mechanism to adjust the congestion rate based on network congestion and network performance.
Cubic algorithm is an advanced congestion control algorithm that was introduced in the 2000s. It is a hybrid algorithm that combines elements of both Tahoe and Reno. Cubic uses a feedback mechanism similar to Reno but also incorporates features from Tahoe, such as slow start and fast recovery.
Key features of these algorithms include:
They work on a per-flow basis, meaning they monitor the available bandwidth for each flow and adjust the congestion rate accordingly.
They use loss rate and flow control mechanisms to manage the flow rate.
They are designed to be fair and prevent unfair starvation of existing connections.
They are often used in conjunction with other network congestion control mechanisms, such as CUBIC and Fast Fourier Transform (FFT).
Examples:
Tahoe is often used in TCP implementations, such as in Linux and Windows operating systems.
Reno is used in various TCP implementations, including Linux and FreeBSD.
Cubic is used in some high-performance network devices and operating systems