Lab 4.5.2 Diagramming Intranet Traffic Flows

Step 1: Cable and configure the current network
a. Referring to the topology diagram, connect the console (or rollover) cable to the console port on the router and the other cable end to the PC1 computer with a DB-9 or DB-25 adapter to the COM 1 port.
Ensure that power has been applied to both the host computer and router.
b. Establish a HyperTerminal or other terminal emulation program to the router.
c. Ping between Host1 and Host2 and between the hosts and Discovery Server to confirm network
connectivity. Troubleshoot and establish connectivity if the pings fail.

Step 2: Configure NetFlow on the interfaces
From the global configuration mode, issue the following commands to configure NetFlow:
FC-CPE-1(config)#interface fastethernet 0/0
FC-CPE-1(config-if)#ip flow egress
FC-CPE-1(config-if)#ip flow ingress
FC-CPE-1(config-if)#interface fastethernet 0/1
FC-CPE-1(config-if)#ip flow ingress
FC-CPE-1(config-if)#ip flow egress
FC-CPE-1(config-if)#end

Step 3: Verify the NetFlow configuration
a. From the privileged EXEC mode, issue the show ip flow interface command.
FC-CPE-1#show ip flow interface
FastEthernet0/0
ip flow ingress
ip flow egress
FastEthernet0/1
ip flow ingress
ip flow egress
Confirm that the output shown above is displayed. Troubleshoot your configuration if this output is not
displayed.
b. From the privileged EXEC mode, issue the following command to ensure that flow cache statistics are
reset:
FC-CPE-1#clear ip flow stats

Step 4: Create network data traffic
A range of network application data flows between the Host1, Host2, and the server is to be generated and captured. Generate as many of the data flows shown below as is possible in your lab. Your instructor will advise you of the particular applications that are available to be used in this lab.
a. On Host1, launch a web browser and enter the URL http://server.discovery.ccna
b. On Host2, launch a web browser and enter the URL http://server.discovery.ccna
If Discovery Server is not being used, then use http://172.17.1.1 to access the web services
configured on that server.
c. Use FTP to download a file.
On Host1 and Host2, launch a web browser and enter the URLftp://server.discovery.ccna,
or issue ftp server.discovery.ccna from the command line. If DNS is not configured, use the
IP address 172.17.1.1 instead of the domain name.
Download a file from the server.
d. If email accounts have been configured using the POP3 and SMTP services on Discovery Server,
send two emails between users on Host1 and Host2 using these accounts.
e. Set up Windows file sharing between Host1 and Host2 and copy a file from one to the other.

Step 5: View the data flows
At the conclusion of the data flow, view the details by issuing the show ip cache verbose flow command from privileged EXEC mode.
FC-CPE-1#show ip cache verbose flow
Application Type
Source
Destination
Comments
Web
Intranet Web Server
Host1
Web
Intranet Web Server
Host2
File Transfer
Intranet File Server
Host1
File Transfer
Intranet File Server
Host2
Email
Host1
Email Server
Email
Host2
Email Server
File Share
Host1
Host2

Step 6: Clean up
Erase the configurations and reload the routers and switches. Disconnect and store the cabling. For PC hosts that are normally connected to other networks (such as the school LAN or to the Internet), reconnect the appropriate cabling and restore the TCP/IP settings.
Challenge
This lab simulates LAN data traffic. The LAN data flows of a production network would be much more
extensive and recorded over a greater period of time, perhaps a full working week.
a. On the FilmCompany initial current network topology shown on the next page, add PC host and printer icons as listed for each VLAN. Draw a circle that encloses the local LAN segments.
b. Then, using the data flows recorded in this lab as a starting point, use different colors to mark the different LAN data flows between hosts and the server.

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