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.
- From the Systems Management - Servers work pane,
select the managed system.
- Select Connections - Service Processor Status. Record
the IP address of the service processor.
- From the HMC Management work pane, select Test Network
Connectivity.
- Enter the IP address of the service processor and select Ping.
- Choose from the following options:
- If the ping is successful, go to step 6.
- If the ping is not successful, go to step 7.
- If the ping test is successful, perform the following steps:
- In the Systems Management - Servers work pane, ensure that
there are no reference codes displayed in the Reference Code column
for the server in No Connection state. Note: A steady reference
code could indicate a hardware problem. If the reference code is a
clickable link, click the reference code to display possible procedures
to correct the problem. If the reference code is not a link or a solution
is not presented, contact your next level of support or your hardware
service provider.
- Restart the HMC. For more information on restarting the HMC, see Shut Down or Restart.
- 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:
- In the Systems Management - Servers work pane, ensure that
there are no reference codes displayed in the Reference Code column
for the server in No Connection state. Note: A
steady reference code could indicate a hardware problem. If the reference
code is a clickable link, click the reference code to display possible
procedures to correct the problem. If the reference code is not a
link or a solution is not presented, 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 8.
- If there is no power to the managed system, Power On the 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.
- 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 8.d.
- Reset the service processor using the following steps:
- Power Off the server.
- Unplug the AC power cord and re-plug it back in.
- Power On the server.
- If the problem is not resolved by any of the above steps, contact
your next level of support or your hardware service provider.
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