DS8000 Service Documentation Version 7.5

MAP6580 Customer Ethernet connection problem

Use this procedure to analyze problems with management console (HMC) Ethernet connection to the customer LAN.

About this task

Use MAP7000 Entry point for storage facility private network problems to analyze problems with the DS8000 private network.
Related tasks:
How to start the service information center

MAP6580 Section-1

About this task

Find the management console hardware that you have:

MAP6580 Section-2, xSeries 335, 336, or 3550

Procedure

  1. Is the customer able to connect to the HMC through the customer network?
  2. At the rear of the management console server, verify that the customer Ethernet cable is properly connected to the customer network connector (eth2). See Figure 1 (X335 server) or Figure 2 (X336 server) or Figure 3 (X3550 server).

    Did you find and correct the problem with the Ethernet cable?

    • Yes, ask the customer to retry the operation. If problems still persist, then go to the next step.
    • No, go to the next step.
    Figure 1. Ethernet connectors on the rear of the X335 management console server
    Management console rear view with Ethernet locations
    Figure 2. Ethernet connectors on the rear of the X336 management console server
    X336 management console Ethernet ports
    Figure 3. Ethernet connectors X3550 management console server (rear view)
    X3550 management console server (front view)
  3. At the rear of the management console server, observe the link status LED at the customer network connector (eth2). See Figure 4 (X335 server) or Figure 5 (X336 server) or Figure 6 (X3550 server). The LED is lit when the Ethernet controller receives a LINK pulse from the hub.

    Is the link status LED lit?

    Figure 4. LEDs on the rear of the X335 management console server
    LEDs on the rear of the X335 MC server
    Figure 5. LEDs on the rear of the X336 management console server
    LEDs on the rear of the X336 MC server
    Figure 6. LEDs on the rear of the X3550 management console server
    LEDs on the rear of the X3550 management console server
  4. Move the customer Ethernet cable from connector PI-C1-T1 (eth0) to P1-C2-T2 (eth1). See Figure 1 (X335 server) or Figure 2 (X336 server) or Figure 3 (X3550 server).

    Is the link status LED on P1-C2-T2 (eth1) lit?

    • Yes, move the customer Ethernet cable back to P1-C1-T1 (eth0) and go to step 7.
    • No, go to the next step.
  5. Work with the customer to check the following:
    1. The other end of the Ethernet cable is plugged correctly to the customer-supplied switch or hub.
    2. The switch or hub is functioning correctly.
    3. The port on the hub is working correctly. (Ask the customer to move the cable to a different port and retry the operation.)
    4. The customer supplied Ethernet cable is working correctly. (Swap the cable and verify if the problem still exists.)
  6. Did you resolve the problem with the customer network or cable?
  7. Reset the customer Ethernet port on the HMC. Changes to network settings take effect immediately; therefore, the network does not need to be restarted. A logon screen appears, and the HMC requires the CE to log in again.
  8. Observe the link status LED at the customer network port (eth2). See Figure 4 (X335 server) or Figure 5 (X336 server) or Figure 6 (X3550 server).

    Is the link status LED lit?

MAP6580 Section-3, Laptop management console

Procedure

  1. Can the customer connect to the HMC through the customer network?
  2. Ensure that the customer network cable is properly connected to the customer network connector at the rear of the rack. See Figure 7 and Figure 8.
    Figure 7. ThinkPad laptop customer modem and Ethernet connectors, rear of rack
    Laptop rear connector view
    Note: Ethernet connector and modem connector may be reversed on some racks. Both connectors are located at the rear of the rack, to the right of the Ethernet switches, below the bottom storage enclosure air baffle.
    Figure 8. Customer modem and Ethernet connectors, DS8870 All Flash, rear of rack
    Ethernet switch tray locations (Model 961 rack version 2 rear)
  3. Ensure the built-in Ethernet extender cable from the rear of rack is properly connected to the customer Ethernet connector (eth2) on the laptop.
    • W500: eth2 is located on left side of laptop. See Figure 9.
    • T510, T520, T530: eth2 is located on right side of laptop. See Figure 10.
    • T540: eth2 is located on the rear of the laptop. See Callout label 1 Figure 11.
    Figure 9. Customer eth2 Ethernet connector on laptop (rear view)
    Customer eth2 Ethernet connector on laptop (rear view)
    Figure 10. ThinkPad T510, T520, and T530 USB and RJ45 network connection ports
    ThinkPad T510 USB ad RJ45 network connection ports
    Figure 11. ThinkPad T540 laptop unit cable connections (left and rear)
    ThinkPad T540 laptop unit cable connections (left and rear)

    Did you find and correct the problem with the Ethernet extender cable between the rear of the rack and the laptop?

    • Yes, ask the customer to retry the operation. If problems still persist, then go to the next step.
    • No, go to the next step.
  4. Observe the amber link status LED next to the customer's network connector (eth2). The LED is lit when the Ethernet controller receives a LINK pulse from the hub.

    Is the link status LED lit?

  5. Work with the customer to check the following:
    1. The other end of the Ethernet cable is plugged correctly to the customer-supplied switch or hub.
    2. The switch or hub is functioning correctly.
    3. The port on the hub is working correctly. (Ask the customer to move the cable to a different port and retry the operation.)
    4. The customer-supplied Ethernet cable is working correctly. (Swap the cable and verify if the problem still exists.)
  6. Did you resolve the problem with the customer's network or cable?
  7. Reset the customer's Ethernet port on the HMC:
    1. From the navigation area, click HMC Management.
    2. In the right work area, go to the Operations section and click Change Network Settings. The Change Network Settings window opens.
    3. Click on the LAN adapters tab and select eth2.
    4. Click on Details to verify the settings.
    5. Click on OK when the Request returns.
  8. Observe the link status LED at the customer network port (eth2). Is the link status LED lit?

MAP6580 Section-4

Procedure

  1. Reset the customer Ethernet port on the HMC. Changes to network settings take effect immediately; therefore, the network does not need to be restarted. A logon screen appears, and the HMC requires the CE to log in again.
  2. Ask the customer to retry the operation. Does the problem still occur?
    • Yes, go to the next step.
    • No, the problem is resolved.
  3. Verify that the network settings are correct.
    1. On the HMC, select: HMC Management > Operations > Change Network Settings.
    2. Use the customer supplied customization worksheets to check that the settings are correct for eth2.
    CAUTION:
    Do not change network settings for the other Ethernet ports.
  4. Did you find the problem with the network settings?
    • Yes, change the settings to the desired values and ask the customer to retry the operation. If problems still persist, then go to the next step. Note: This requires that the HMC is restarted. Ensure that the customer is not accessing the management console through the ESSNI interface.
    • No, go to the next step.
  5. Test the connectivity from the HMC to the customer network.
    1. Ask the customer to supply an IP address for a working device that can be contacted on their network. (If the HMC is connected through a gateway or firewall, try that first.)
    2. On the HMC, select: HMC Management > Operations > Test Network Connectivity.
    3. Enter the customer supplied IP address in the pop up window for the ping utility and click OK.
    4. Allow 10 seconds and then click on Stop.
      • Successful communication will result in a series of messages to indicate that data was received.
      • Unsuccessful communication will result in no data being received or a timeout message.
  6. Was the communication test successful?
  7. Ask the customer to attempt to 'ping' the HMC IP address from a computer on their network. If the HMC connects through a gateway or firewall then attempt to ping the HMC from a device on the same side of the gateway as the HMC. Was the 'ping' successful?
    • Yes, go to step 9.
    • No, go to the next step.
  8. Verify the following:
    1. The network settings were correct on the customization worksheets.
    2. If a gateway or firewall is being used then ensure that the ping test still fails on the HMC side of the gateway.
    3. If not problem was identified then go to MAP6580 Section-5.
  9. Ask the customer to 'ping' the HMC host name. Was the 'ping' test successful?
    • Yes, there does not appear to be an HMC network connectivity problem.
      • If the customer is experiencing problems with ESSNI, CLI, or other applications, go to Start here and look for the symptoms described.
      • Refer to the ThinkPad® T500 and W500 (15.4-inch widescreen) Hardware Maintenance Manual on the IBM® DS8000 series Service Documents CDROM to test the Ethernet controller for eth2.
      • In the appropriate maintenance manual for the management console server, refer to the Ethernet controller troubleshooting chart. The manual is on the IBM DS8000 series Service Documents CDROM:
        • xSeries 335 Type 8676, Type 8830 Hardware Maintenance Manual and Troubleshooting Guide
        • xSeries 336 Type 1879 and Type 8837 Hardware Maintenance Manual and Troubleshooting Guide
        • IBM System x3550 Type 7978 and 1913 Problem Determination and Service Guide
        • ThinkPad® T500 and W500 (15.4-inch widescreen) Hardware Maintenance Manual
        • ThinkPad T510, T510i, and W510 Hardware Maintenance Manual
        • Hardware Maintenance Manual ThinkPad® T520, T520i, and W520
        • Hardware Maintenance Manual ThinkPad® T530, T530i, and W530
        • Hardware Maintenance Manual ThinkPad® T540p and W540
      • If the customer is still experiencing problems in accessing the HMC, contact your next level of support for assistance.
    • No, there appears to be a problem with resolution of the HMC host name.
      • Verify that the host name was entered correctly in step 3.
      • Ask the customer to check that their DNS server is configured and working correctly.

MAP6580 Section-5

Procedure

  1. Run the Ethernet diagnostics. Go to MAP6530 Testing the management console. Return here when the test is completed.
    Notes:
    1. This task requires that the HMC be restarted. Ensure that the customer is not accessing the HMC through the ESSNI interface.
    2. A wrap plug (FRU 60G3981) is used with the diagnostic tests.
  2. Did the MAP6530 Testing the management console diagnostics find an error with the Ethernet controller?
    • Yes, go to MAP6580 Section-6.
    • No, apparently there is a network problem that is external to the HMC. Work with the customer or next level of support to resolve the problem.

MAP6580 Section-6

Procedure

  1. If the management console is an xSeries, replace the system board (HMC planar) in the management console server. Refer to the service replaceable units in the appropriate maintenance manual for the management console server. The manual is on the IBM DS8000 series Service Documents CDROM:
    • xSeries 335 Type 8676, Type 8830 Hardware Maintenance Manual and Troubleshooting Guide
    • xSeries 336 Type 1879 and Type 8837 Hardware Maintenance Manual and Troubleshooting Guide
    • IBM System x3550 Type 7978 and 1913 Problem Determination and Service Guide
  2. If the management console is a laptop, replace the laptop. See Exchange the laptop unit (T520, T530, T540).
  3. Ask the customer to retry the operation. If problems still persist, contact your next level of support.