Learning by Doing: CISCO Certified Network ... - SCN Research

Step-by-Step Instructions:
1. Read all of these instructions carefully…you will be recording times and such so
it is important that you are familiar with these steps BEFORE you do them.
2. Cable and set up the lab as shown. Test for complete connectivity by sending
icmp packets from one workstation to another.
3. Enable the protocol inspector to begin “capture” of network packets from
workstation A by control+k. Change the PPP interface to your NIC. Press “start.”
Check your watch and record the time. See figure 1 below.
Figure 1—Be sure to select the NIC as your capture interface.
4. From workstation B ping workstation A and then trace the route between the two.
We are essentially generating ICMP packets on our network. From our
knowledge of CISCO routers we can expect to see RIP updates every 30 seconds
(“other”), CDP every 60 seconds (“other”), and our ICMP packets as they are sent
and received. See figure 2 below.
Figure 2—A capture in progress.
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