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Understanding TCP/IP Model Internals and Interfaces

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1508 <strong>Underst<strong>and</strong>ing</strong> <strong>TCP</strong>/<strong>IP</strong> <strong>Model</strong> <strong>Internals</strong> <strong>and</strong> <strong>Interfaces</strong><br />

9. Type cont in the Simulation Execution window or click on the Continue button to let the<br />

simulation complete.<br />

10. Click on Close to close the Simulation Execution window.<br />

Examine Packet Content (Homework Lab)<br />

Client received ACK of SYN (as well as a SYN) at event 172. Let us examine its content.<br />

1. Run the simulation again, <strong>and</strong> stop it before event 172 is executed, by typing the following in the<br />

Simulation Execution console:<br />

evstop 172<br />

cont<br />

2. You can see that <strong>TCP</strong> is about to receive a packet with ID = 3. Print the packet content.<br />

a. Click on the Packet Content tab in the lower right pane of the Simulation Execution window<br />

<strong>and</strong> specify Packet ID as 3. Press the Enter key.<br />

CONFIDENTIAL – RESTRICTED ACCESS: This information may not be disclosed, copied, or transmitted in any format without the prior written consent of OPNET Technologies, Inc.<br />

© 2010 OPNET Technologies, Inc.<br />

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