HP-UX VLAN Administrator's Guide, February 2007

Procedure : Connectivity Test
This section describes how to step through the process illustrated in Figure 5-1.
NOTE: This process assumes the local VLAN interface exists, is up, and that a connectivity test
to the local host itself passes. To verify the local VLAN interface, use the nwmgr command to
display detailed information about VLAN interfaces. Enter:
# nwmgr -S vlan -v
Examine the output to verify that the VLAN ID is as expected and that the interface state is UP.
To test connectivity to the local host, enter:
# nwmgr --diag -c lanVPPA -A dest=local_MAC_address
If these tests do not pass, troubleshoot the problem as needed. For example, if the VLAN interface
is not UP, check the cable. If the connectivity test to the local host fails, check the VPPA you are
using.
1. Test connectivity to the remote host. Enter:
# nwmgr --diag -c lanVPPA -A dest=remote_MAC_address
2. If the connectivity test succeeds, stop.
If the connectivity test fails, note which error was returned.
3. If the connectivity test failed with error = Address has bad format or with error = not
an individual address, correct the link-level address with the proper MAC address
(station address) format and value. Repeat the connectivity test to the remote host.
4. If the connectivity test failed because the remote host did not respond. Verify the following:
a. On both the local host and the remote host, display the VLAN interface to verify that
the VLAN IDs are the same on both and to verify that the VLAN interfaces are up.
Enter:
(on local host) # nwmgr -c lanVPPA -v
(on remote host) # nwmgr -c lanVPPA -v
Also, examine the output to verify that the MTUs match and that the link attributes for
speed, and duplexity are compatible.
Make corrections as needed. For example, to modify the VLAN ID on the remote host,
enter:
# nwmgr -s -c lanVPPA -A vlanid=correct_vlan_id
b. Verify that the switches along the path are configured with the correct VLAN ID and
marked tagged or untagged as appropriate.
Consult switch customer documentation and make corrections if needed.
c. Repeat the connectivity test to the remote host. Enter:
# nwmgr --diag -c lanVPPA -A dest=remote_MAC_address
5. If the connectivity test is successful, stop.
If the connectivity test fails, contact HP.
Link-Level : Connectivity Test 51