70
edits
Changes
Removing redundant arp
#Switch to your '''c7host''' machine.
#Issue the '''ping''' command to test connectivity to your '''centos1''', '''centos2''', and '''centos3''' VMs.
#Examine the contents of the ARP cache by using the command: <b><code><span style="color:#3366CC;font-size:1.2em;">arp</span></code></b>arp What is the purpose of ARP?
#Check the contents of the cache again by using the command: <b><code><span style="color:#3366CC;font-size:1.2em;">arp -n</span></code></b> What was the difference in output?
#Issue the following command: <b><code><span style="color:#3366CC;font-size:1.2em;">netstat -at</span></code></b> This command will list all active TCP ports. Note the state of your ports.
<li>Now execute the command netstat -au What is the difference between the options: -at and -au? When examining UDP ports why is there no state?</li>
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===Part 3: Using Arrays to Collect VM Network Information===