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Scheduling and buffer management are two key functions that a router performs on its queues. (i) What is each of these techniques concerned with? (ii) Describe how First-In-First-Out (FIFO) scheduling can be detrimental to application performance and discuss advanced techniques to solve this problem following our discussion of [Demers+98, Fair Queueing]. (iii) Describe how Tail Drop buffer management can be detrimental to application performance and discuss advanced techniques to solve this problem following our discussion of [Floyd+93, Random Early Detection].

Scheduling and buffer management are two key functions that a router performs on its queues. (i) What is each of these techniques concerned with? (ii) Describe how First-In-First-Out (FIFO) scheduling can be detrimental to application performance and discuss advanced techniques to solve this problem following our discussion of [Demers+98, Fair Queueing]. (iii) Describe how Tail Drop buffer management can be detrimental to application performance and discuss advanced techniques to solve this problem following our discussion of [Floyd+93, Random Early Detection].

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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**Scheduling and Buffer Management in Routers** Scheduling and buffer management are two key functions that a router performs on its queues. (i) **Concerns of Each Technique**: - **Scheduling**: Determines the order in which packets are transmitted from a router's queue. - **Buffer Management**: Deals with how packets are stored and dropped within a router's buffer. (ii) **First-In-First-Out (FIFO) Scheduling**: - **Detrimental Effects**: Can lead to increased packet delays and congestion, especially for time-sensitive applications. - **Advanced Techniques**: - **Fair Queueing (Demers+98)**: Allocates bandwidth fairly among different flows to improve performance and reduce delays. (iii) **Tail Drop Buffer Management**: - **Detrimental Effects**: Can cause global synchronization, leading to bursty drops and reduced throughput. - **Advanced Techniques**: - **Random Early Detection (Floyd+93)**: Proactively drops packets before the buffer is full to prevent congestion and improve flow handling.
Transcribed Image Text:**Scheduling and Buffer Management in Routers** Scheduling and buffer management are two key functions that a router performs on its queues. (i) **Concerns of Each Technique**: - **Scheduling**: Determines the order in which packets are transmitted from a router's queue. - **Buffer Management**: Deals with how packets are stored and dropped within a router's buffer. (ii) **First-In-First-Out (FIFO) Scheduling**: - **Detrimental Effects**: Can lead to increased packet delays and congestion, especially for time-sensitive applications. - **Advanced Techniques**: - **Fair Queueing (Demers+98)**: Allocates bandwidth fairly among different flows to improve performance and reduce delays. (iii) **Tail Drop Buffer Management**: - **Detrimental Effects**: Can cause global synchronization, leading to bursty drops and reduced throughput. - **Advanced Techniques**: - **Random Early Detection (Floyd+93)**: Proactively drops packets before the buffer is full to prevent congestion and improve flow handling.
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