Devry Netw320 Lab 7

NETW320

2/20/2013

Lab #7, CODEC Selection for a WAN

Lab Report

In the Results Browser, expand FTP and select Download Response Time (sec). Change the view from AS IS to time_average and select the Show button. Zoom in on the last two-thirds of the graph to eliminate start-up oscillation time and to get better granularity of the results. Copy and label this graph to your lab report. Then use this graph to answer the following questions.

[pic]

( 1. For the G.711 run, estimate the FTP response Time.

[pic]

11 seconds is about the average FTP response time

( 2. For the G.729 run, estimate the FTP response Time.

9.5 seconds is about the average FTP response time.

( 3. For the G.723.1 run, estimate the FTP Response Time.

7.5 seconds is about the average FTP response time.

Close the FTP tree. Expand E-mail and select Download Response Time (sec). Change the view from AS IS to time_average and select the Show button. Zoom in on the last two-thirds of the graph to eliminate start-up oscillation time and to get better granularity of the results. Copy and label this graph to your lab report. Then use this graph to answer the following questions.

[pic]

( 4. For the G.711 run, estimate the E-mail Download Response Time.

2.5 seconds is the average email download response time.

( 5. For the G.729 run, estimate the E-mail Download Response Time.

2.4 seconds is the average email download response time.

( 6. For the G.723.1 run, estimate the E-mail Download Response

[pic]Time.

2.3 seconds is the average email download response time.

Close the E-mail tree. Expand Voice and select Traffic Received (bytes/sec). Change the view from AS IS to time_average and select the Show button. Zoom in on the last two-thirds of the graph to eliminate start-up oscillation time and to get better granularity of the results. Copy and label this graph to...