Ethernet Support Guide for HP-UX 11i v3

4.3.2.1 Flowchart 2 procedures
• Enter nwmgr --diag -A dest=destination_MAC-c lanppa using the remote host’s
MAC address. If the nwmgr --diag result is successful, perform the network-level tests
(“Flowchart 3: Network-level tests” (page 43)). Otherwise, note the error that was returned.
• If loopback failed and the error message returned was “Address has bad format” or “Not an
individual address”, correct the link level address with the proper station address format and
value, and then repeat the link-level test.
• Otherwise, loopback failed because the remote host did not respond. Check the remote host’s
MAC address or choose another remote host, and re-enter nwmgr --diag -A
dest=destination_MAC-c lanppa. If nwmgr --diag is now successful, perform the
network-level tests (“Flowchart 3: Network-level tests” (page 43)). You may also want to call
the node manager of the remote host that did not respond (if this was the case). If nwmgr
--diag fails, perform the configuration tests (“Flowchart 8: Configuration tests” (page 49)).
• Note that nwmgr --diag cannot be used to test connectivity between end stations if those
stations are separated by a gateway or router. To test connectivity between stations under
these circumstances, run the nwmgr --diag test between the router or gateway and each
of the end stations independently, then verify network level connectivity by using ping between
the end stations. If the end stations cannot communicate with each other, but they can each
communicate with the router or gateway, then verify the routing tables in the router or gateway.
4.3.3 Flowchart 3: Network-level tests
Use the process in this flowchart to validate arp entries and remote host availability. This process
also uses ping to check communication between network layers on the source and target host
(see Figure 4 and Figure 5).
Figure 3 Flowchart 3: Network-level tests
ARP test
Network-
level
tests
ping
test
4.3.3.1 Flowchart 3 procedures
• Use the ARP test to validate arp entries and remote host availability (see Figure 4).
• Use the ping test to check communication between network layers on source and target host
(see Figure 5)
4.3 Diagnostic flowcharts 43