Preparation

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, you'll turn in a brief answer to the following questions (really—we don't need more than a sentence or so for each question). Your TA will be in touch about exactly how to turn that in.

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.

Notes

Supplemental notes for this recitation. These, along with our Sunday office hours are intended to help students who had to miss a recitation due to isolation, but they're also a useful resource for preparing for exams.