Ethernet Support Guide for HP-UX 11i v3

Figure 5 Flowchart 5: ping test
ping
test
continued
in Figure
6
Successful?
YES
NO
NO
NO
Enter
netstat -in.
Are MTUs same on
local and remote
hosts?
Set MTUs the same
on local and remote hosts
by entering
nwmgr -s -A mtu=size
-c lanppa.
Transport-
level
test
Is speed
appropriate?
YES
YES
YES
NO
Using
Jumbo
Frames?
Enter ping
remote-host 2000 command.
Set desired speed on
local and remote hosts
by entering
nwmgr -s -A speed=value
-c lanppa command.
Validate network,
remote host and
configuration
settings.
Repeat
ping
test
Repeat
ping
test
4.3.5.1 Flowchart 5 procedures
• Enter ping to the remote host. If ping is successful, perform the transport-level test (“Flowchart
6: Transport-level test” (page 47)). For more information about this command, see the ping(1m)
manpage.
• If ping is not successful, enter netstat -in to verify MTU size. Ensure that the MTU size
is the same on both the local and remote hosts (9000 for Jumbo Frames and 1500 for standard
frames) by entering nwmgr -s -A mtu=mtusize -c lanppa and repeat the ping test.
Jumbo Frames are not supported in Fast Ethernet.
• If ping is still not successful and you are either (1) not using Jumbo Frames or (2) using Jumbo
Frames with the correct speed setting, continue to the next flowchart (“Flowchart 5 ping test
(continued) ” (page 46)) to validate the network, remote host, and configuration settings.
• If the link speed is not appropriate, set it with nwmgr -s -A speed=speed _value -c
lanppa and repeat the ping test.
4.3 Diagnostic flowcharts 45