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8.0. Create a table as in 8.3.1 Simple fixed-window-size analysis for a network A—R1—R2—R3—B. The A-R1 link is infinitely fast. The R1–R2 and R3–B links have a bandwidth delay of 1 packet/second with no additional propagation delay. The R2-R3 link has a bandwidth delay of 1 packet / 2 seconds, and no propagation delay. The reverse B-A direction (for ACKS) is infinitely fast. Assume winsize = 6. (a). Carry out the table for 10 seconds. Note that you will need to show the queue for both R1 and R2. (b). Continue the table at least partially until T=18, in sufficient detail that you can verify that RTT actual for packet 8 is as calculated in the previous exercise. To do this you will need more than 10 packets, but fewer than 16; the use of hex labels A, B, C for packets 10, 11, 12 is a convenient notation.

8.0. Create a table as in 8.3.1 Simple fixed-window-size analysis for a network A—R1—R2—R3—B. The A-R1 link is infinitely fast. The R1–R2 and R3–B links have a bandwidth delay of 1 packet/second with no additional propagation delay. The R2-R3 link has a bandwidth delay of 1 packet / 2 seconds, and no propagation delay. The reverse B-A direction (for ACKS) is infinitely fast. Assume winsize = 6. (a). Carry out the table for 10 seconds. Note that you will need to show the queue for both R1 and R2. (b). Continue the table at least partially until T=18, in sufficient detail that you can verify that RTT actual for packet 8 is as calculated in the previous exercise. To do this you will need more than 10 packets, but fewer than 16; the use of hex labels A, B, C for packets 10, 11, 12 is a convenient notation.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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8.0. Create a table as in 8.3.1 Simple fixed-window-size analysis for a network A-R1 R2 R3-B. The A-R1 link is infinitely fast. The R1-R2 and R3-B links have a bandwidth delay of 1 packet/second with no additional propagation delay. The R2-R3 link has a bandwidth delay of 1 packet / 2 seconds, and no propagation delay. The reverse B-A direction (for ACKS) is infinitely fast. Assume winsize = 6. (a). Carry out the table for 10 seconds. Note that you will need to show the queue for both R1 and R2. (b). Continue the table at least partially until T=18, in sufficient detail that you can verify that RTT actual for packet 8 is as calculated in the previous exercise. To do this you will need more than 10 packets, but fewer than 16; the use of hex labels A, B, C for packets 10, 11, 12 is a convenient notation. Hint: The column for "R2 sends” (or, more accurately, "R2 is in the process of sending") should look like this: T 0 1 2 3 456 R2 sends 1 1 2 223 2 3
Transcribed Image Text:8.0. Create a table as in 8.3.1 Simple fixed-window-size analysis for a network A-R1 R2 R3-B. The A-R1 link is infinitely fast. The R1-R2 and R3-B links have a bandwidth delay of 1 packet/second with no additional propagation delay. The R2-R3 link has a bandwidth delay of 1 packet / 2 seconds, and no propagation delay. The reverse B-A direction (for ACKS) is infinitely fast. Assume winsize = 6. (a). Carry out the table for 10 seconds. Note that you will need to show the queue for both R1 and R2. (b). Continue the table at least partially until T=18, in sufficient detail that you can verify that RTT actual for packet 8 is as calculated in the previous exercise. To do this you will need more than 10 packets, but fewer than 16; the use of hex labels A, B, C for packets 10, 11, 12 is a convenient notation. Hint: The column for "R2 sends” (or, more accurately, "R2 is in the process of sending") should look like this: T 0 1 2 3 456 R2 sends 1 1 2 223 2 3
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