Correcting a No connection state for a managed system

The No connection state can occur when the HMC is not connected, or the connection with the managed system failed.

1. Obtain the IP address for the managed system's service processor by performing the following steps.
   1. On the HMC, right-click the desktop and select terminal > xterm. The restricted shell command line interface opens.
   2. At the terminal, issue the command: lssysconn -r all
      Information similar to the following is displayed:

      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 

   3. At the terminal, issue the ping command to the address of the failing system. In the previous example, you would type: ping 10.0.0.247.
2. Choose from the following options:
   • If the ping is successful, go to step 3.
   • If the ping is not successful, go to step 4.
3. If the ping test is successful, perform the following steps:
   1. If your system is equipped with a control panel, ensure that there are no steady (nonscrolling) reference codes displayed on the panel.
      Note: A steady reference code might indicate a hardware problem. Contact your next level of support or your hardware service provider.
   2. Restart the HMC. For instructions about restarting the HMC, see Shutting down, restarting, logging off, and disconnecting the HMC.
   3. If restarting the HMC does not resolve the problem, contact your next level of support or your hardware service provider.
4. If the ping test is not successful, perform the following steps:
   1. If your system is equipped with a control panel, ensure that there are no steady (nonscrolling) reference codes displayed on the panel.
      Note: A steady reference code might indicate a hardware problem. Contact your next level of support or your hardware service provider.
   2. If your system has a control panel, check to see if the power light is on.
   3. 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, see HMC and system power-on and power-off procedures. After the power is restored, wait 5 minutes for the service processor to restart and the HMC to re-establish contact. If the system is equipped with redundant service processors, allow up to 20 minutes for this step.
5. Verify physical network connectivity by performing the following steps:
   1. Verify that the HMC and the service processor are correctly connected to your Ethernet network.
   2. Verify that Ethernet link status is good on all network segments which exist between the HMC and the managed system.
   3. 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, replace the cables 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, replace the cables the way they were and continue with step 5.d.
   4. Reset the service processor. See Resetting the service processor.
6. If the problem is not resolved by any of the above steps, contact your next level of support or your hardware service provider.