The No connection state can occur when the HMC is
not connected, or the handshake with the managed system failed.
Use this procedure for a system that was previously connected to
the same HMC and is now in
No connection state. If you have a new system,
a new HMC, or have moved your system to a different HMC, refer to
Correcting a connection problem between the HMC and a managed system.
- Obtain the IP address for the managed system's service processor
by performing the following steps.
- On the HMC, right-click the desktop and select . The restricted shell command
line interface displays.
- At the terminal, issue the command: lssysconn -r all
Information
similar to the following appears:
resource_type=sys,type_model_serial_num=9117-570*100729E,sp=unavai
lable,ipaddr=10.0.0.247,alt_ipaddr=unavailable,state=No Connection,conne
ction_error_code=Connecting 0000-0000-00000000
- At the terminal, issue the ping command to the address of the failing
system. In the example above you would type: ping 10.0.0.247.
- Choose from the following options:
- If the ping is successful, go to step 3.
- If the ping is not successful, go to step 4.
- If the ping test is successful, perform
the following steps:
- If your system is equipped with a control panel, ensure that there are
no steady (that is, non-scrolling) reference codes displayed on the panel.
Note: A
steady reference code could indicate a hardware problem. Contact your next
level of support or your hardware service provider.
- Restart the HMC.
- If restarting the HMC does not resolve the problem, contact your next
level of support or your hardware service provider.
- If the ping test is not successful,
perform the following steps:
- If your system is equipped with a control panel, ensure that there are
no steady (that is, non-scrolling) reference codes displayed on the panel.
Note: A
steady reference code could indicate a hardware problem. Contact your next
level of support or your hardware service provider.
- If your system has a control panel, check to see if the power light is
on.
- Choose from the following options:
- If there is power to the managed system, go to step 5.
- If there is no power to the managed system, refer to Powering
on a managed system. After the power is restored, wait 5 minutes for
the service processor to re-IPL and the HMC to re-establish contact. If the
system is equipped with redundant service processors, allow up to 20 minutes
for this step.
- Verify physical network connectivity:
- Verify that the HMC and the service processor are correctly connected
to your Ethernet network. For more information, see Cabling the HMC.
- Verify that Ethernet link status is good on all network segments which
exist between the HMC and the managed system.
- If you think the network might be the problem, connect a cable from the
HMC to the service processor and try pinging the failing system. Then choose
from the following options:
- If the ping is successful, put the cables back the way they were and correct
the network problem. After the network problem is resolved, repeat this entire
procedure.
- If the ping is not successful, put the cables back the way they were and
continue with step 5.d.
- Reset the service processor. See Resetting the service processor.
- If the problem is not resolved by any of the above steps, contact
your next level of support or your hardware service provider.