Troubleshooting
Diagnostic Flowcharts
Chapter 4
55
Flowchart 4: ARP Test
Use the process in Flowchart 4 to validate arp(1M) entries and remote host availability.
Figure 4-4 Flowchart 4: ARP Test
Flowchart 4 Procedures
• Enter ping(1M) to the remote host’s IP address so that an ARP entry is added.
Whether or not ping is successful, proceed to the next step.
• Use arp(1M) to verify that an entry exists for the remote host in your system's ARP
cache, by entering arp hostname.
• If there is no ARP entry for the remote host, check to see if the remote host is up. If
not, bring up remote host and continue to the ping Test (Figure 4-5).
• If the ARP entry is correct or complete, continue to ping Test. Otherwise, use
arp(1M) to enter the correct station address of the remote system and continue to
the ping Test (Figure 4-5).
ARP Test
YES
Remote
host up?
NO
NO
YES
Bring up
Use ARP to
Is remote host
cache?
entry in ARP
Is the ARP
and complete
entry correct
correct and
complete the
entry
YES
NO
remote host
?
Enter
ping <remotehost> 2000 -n 1
Ping
Test
