Preparation for Data Center TCP (DCTCP) recitation

DCTCP customizes the TCP congestion control algorithm for datacenters. It leverages the Explicit Congestion Notification (ECN) to obtain an early congestion feedback from routers/switches, before the queue drops packets. Further, DCTCP provides a smooth reaction to congestion, i.e., when congestion is limited, it reduces its congestion window by a small amount. In contrast, when congestion is severe, it reduces its congestion window by a large amount.

To help you as you read:

As you read, think about

Question for Recitation

Before you come to this recitation, write up (on paper) a brief answer to the following (really—we don't need more than a couple sentences for each question). If your TA has requested that you email your answer to them, you may do that instead, but it should still be handed in before your recitation begins.

Your answers to these questions should be in your own words, not direct quotations from the paper.

As always, there are multiple correct answers for each of these questions.