Installing and Administering HP FDDI/9000 Software

76 Chapter 4
Troubleshooting HP FDDI/9000
Diagnostic Flowcharts
Flowchart 9 Procedures
A. Execute: linkloop to remote host. Enter the
link level address (station address) of the remote host
in hexadecimal form (preceded by “0x”). Execute
lanscan (1M) to find the link level address (station
address) on the remote host or obtain it from your
network map.
B. linkloop successful? If the test was successful,
network connectivity is okay through the Link Layer
(OSI Layer 2). Go to Flowchart 10. If it failed, note
which error was returned and continue with this
flowchart. NOTE: Make sure the remote host is an HP
9000 Series 700/800 and try again.
C. Loopback FAILED; Address has bad format.
The link level address is not correct. Go to F.
D. Loopback FAILED; Not an individual address.
The link level address is not correct. The second
hexadecimal digit is odd. This means it is a multicast
or broadcast address, which is not allowed. The address
must be unique to one remote host. Go to F.
E. Loopback FAILED. The remote host did not respond.
Go to G.
F. Correct the link address parameter. Change
the link level address to an allowed value and start
again with Flowchart 9.
G. Choose a different host; re-execute
linkloop. Restart this flowchart using a different
remote host.
H. linkloop successful? If the test was successful, go
to Flowchart 10. Network connectivity is okay through
the Link Layer (OSI Layer 2). If not successful, go to I.
I. Check remote host's connectivity to FDDI.
Contact the node manager of the remote host. Check
that the host is configured correctly and that its
network interface is up. If necessary, use Flowchart 8
to verify configuration of the remote host.