Installing and Administering LAN/9000 Software

Chapter 4 99
Troubleshooting LAN/9000
Diagnostic Flowcharts
Flowchart 7 Procedures
A. Execute: linkloop on local interface. Execute the
linkloop command with the station address of the
local interface. Execute lanscan (1M) to find the link
level address (station address) on the remote host or
obtain it from your network map. For more information
on linkloop, refer to the man page.
B. linkloop successful? If not, your LAN card may not be
operational. Go to Flowchart 8.
C. Execute: linkloop to remote host. Enter the link level
address (station address) of the remote host.
D. linkloop successful? If the test was successful, stop.
Network connectivity is okay through the Link Layer
(OSI Layer 2). If not successful, note which error was
returned and continue with this flowchart.
E. Loopbackfailed; Address has bad format. The link level
address is not correct. Go to F.
F. 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 H.
G. Loopback failed. The remote host did not respond. Go
to I.
H. Correct the link address parameter. Change the link
level address to an allowed value and go to C.
I. Choose a different IEEE 802.3 host; re-execute linkloop.
Restart this flowchart using a different remote host.
NOTE: Make sure the remote host is an HP 9000
Systems and try again.
J. linkloop successful? If the test was successful, stop.
Network connectivity is okay through the Link Layer
(OSI Layer 2). If not successful, go to K.
K. Check remote host's connectivity to LAN. 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 Flowcharts 1 and 12 to verify