PLEASE SHOW ALL WORK NECESSARY TO COMPLETE EACH PROBLEM. THANKS IN ADVANCE 1. An

Question

PLEASE SHOW ALL WORK NECESSARY TO COMPLETE EACH PROBLEM. THANKS IN ADVANCE

1. An atm network uses a token bucket scheme for traffic shaping. A new token is put into the bucket every 10µ second. Each token is good for one cell ( i. e. a packet) , which contains 50 bytes of data. What is the maximum sustainable data rate?

2. A computer on a network is regulated by a token bucket. The token bucket is filled at a rate of 1Mbps. It is initially filled to capacity with 10megabits. how long can the computer transmit at the maximum speed of 6 Mbps?

3. Imagine a flow specification that has a max packet size of 2000 bytes, a token bucket rate of 20 million bytes/sec, a token bucket size of 1 million bytes, and a max transmission rate of 50 milliom bytes/sec. How long can a burst at max speed last?

Explanation / Answer

Hi below i have given the solution for first two questions , sorry i couldn;t exactly get the solution for third one,

1. An atm network uses a token bucket scheme for traffic shaping. A new token is put into the bucket every 10µ second. Each token is good for one cell ( i. e. a packet) , which contains 50 bytes of data. What is the maximum sustainable data rate?

ATM payload = 50 bytes = 50*8 = 400 bits

An ATM cell may be sent every time a new token is placed into the Token Bucket, which occurs every 10 microseconds.

So the maximum sustainable data rate = 400 bits/ 10x10-6

2. A computer on a network is regulated by a token bucket. The token bucket is filled at a rate of 1Mbps. It is initially filled to capacity with 10megabits. how long can the computer transmit at the maximum speed of 6 Mbps?

The net outflow from the token bucket is 5Mbps. As a result, the time it takes for the full bucket to empty is 10Mb/5Mbps=2sec. Thus, during the first 2 seconds the computer transmits at the maximum 6-Mbps rate and then it switches to 1-Mbps.

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