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Could you please check if my solution is correct? a) Forwarding table of Bridge 1 at a time =14ec Assuming that Bridge 1 has not learned any addresses yet, its forwarding table at time 14 sec would be: MAC Address Port Station A 1 Station B 2 Station C 3 b) Assuming that Bridge 3 has not learned any addresses yet, its forwarding table at time 28 sec would be: MAC Address Port Station A 2 Station B 1 Station C 3 c) At time 5 sec, Station C sends a frame to Station B. The transmission would be seen on segments C, E, F, G, and H d) At time 20 sec, Station A sends a frame to Station C. The transmission would be seen on segments A, B, D, and F.

Could you please check if my solution is correct? a) Forwarding table of Bridge 1 at a time =14ec Assuming that Bridge 1 has not learned any addresses yet, its forwarding table at time 14 sec would be: MAC Address Port Station A 1 Station B 2 Station C 3 b) Assuming that Bridge 3 has not learned any addresses yet, its forwarding table at time 28 sec would be: MAC Address Port Station A 2 Station B 1 Station C 3 c) At time 5 sec, Station C sends a frame to Station B. The transmission would be seen on segments C, E, F, G, and H d) At time 20 sec, Station A sends a frame to Station C. The transmission would be seen on segments A, B, D, and F.

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
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Could you please check if my solution is correct?

  1. a) Forwarding table of Bridge 1 at a time =14ec

Assuming that Bridge 1 has not learned any addresses yet, its forwarding table at time 14 sec would be:

MAC Address

Port

Station A

1

Station B

2

Station C

3

 

  1. b) Assuming that Bridge 3 has not learned any addresses yet, its forwarding table at time 28 sec would be:

MAC Address

Port

Station A

2

Station B

1

Station C

3

 

  1. c) At time 5 sec, Station C sends a frame to Station B. The transmission would be seen on segments C, E, F, G, and H

 

  1. d) At time 20 sec, Station A sends a frame to Station C. The transmission would be seen on segments A, B, D, and F.



Question 4: Consider the network shown in Figure 1 below, where all the segments (A, B, ..., J) are 100Mbps shared Ethernet. Assuming that the network bridges (B1 to B7) have not learnt any addresses yet, the following sequence of events occur at the times indicated, where time = 0 is the time at which the network is ready for forwarding. There is no other traffic on the network. Time 1 sec 5 sec 10 sec 15 sec 20 sec 25 sec Answer the following questions. a) Show the forwarding table of Bridge 1 at time = 14 sec b) Show the forwarding table of Bridge 3 at time = 28 sec c) List the segments on which the transmission at time = 5 sec is seen d) List the segments on which the transmission at time = 20 sec is seen Note that the loops have to be removed before learning and forwarding happen. ‒‒‒‒‒‒‒‒‒‒‒ Therefore, the tree to be considered is the one obtained after the spanning tree protocol converges (see Module 10 Lesson Plan). C Event Station A sends a frame to Station B Station C sends a frame to Station B Station B replies to station C Station B replies to station A Station A sends a frame to Station C Station C sends a frame to Station A E G B2 B3 Port 2 Port 1 B6 Station C Station A B1 B5 Station B B4 B7 Port 3 Port 2 Port 1 F H B K Table 1
Transcribed Image Text:Question 4: Consider the network shown in Figure 1 below, where all the segments (A, B, ..., J) are 100Mbps shared Ethernet. Assuming that the network bridges (B1 to B7) have not learnt any addresses yet, the following sequence of events occur at the times indicated, where time = 0 is the time at which the network is ready for forwarding. There is no other traffic on the network. Time 1 sec 5 sec 10 sec 15 sec 20 sec 25 sec Answer the following questions. a) Show the forwarding table of Bridge 1 at time = 14 sec b) Show the forwarding table of Bridge 3 at time = 28 sec c) List the segments on which the transmission at time = 5 sec is seen d) List the segments on which the transmission at time = 20 sec is seen Note that the loops have to be removed before learning and forwarding happen. ‒‒‒‒‒‒‒‒‒‒‒ Therefore, the tree to be considered is the one obtained after the spanning tree protocol converges (see Module 10 Lesson Plan). C Event Station A sends a frame to Station B Station C sends a frame to Station B Station B replies to station C Station B replies to station A Station A sends a frame to Station C Station C sends a frame to Station A E G B2 B3 Port 2 Port 1 B6 Station C Station A B1 B5 Station B B4 B7 Port 3 Port 2 Port 1 F H B K Table 1
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