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Network connection problems

Use the troubleshooting tables to find solutions to problems that have identifiable symptoms.

Two column table for documenting the symptom and the corresponding action for network connection problems.
  • Follow the suggested actions in the order in which they are listed in the Action column until the problem is solved.
  • If an action step is preceded by (Trained technician only), that step must be performed only by a trained technician.
  • Go to the support website at the Lenovo Support Portal to check for technical information, hints, tips, and new device drivers or to submit a request for information.
SymptomAction
Unable to wake the server using the Wake on LAN feature.
  1. If you are using the ML2 network adapter and the server is connected to the network using slot 3 connector, check the system-error log or IMM2 system event log (see Event logs), make sure:
    1. FAN1 and FAN2 are running in standby mode if ML2 adapter is installed..
    2. The room temperature is not too high (see Server features and specifications).
    3. The air vents are not blocked.
    4. The air baffle is installed securely.
  2. Reseat the ML2 network adapter (see Removing an adapter and Replacing an adapter).
  3. Turn off the server and disconnect it from the power source; then, wait 10 seconds before restarting the server.
  4. If the problem still remains, replace the dual-port network adapter.
Log in failed by using LDAP account with SSL enabled.
  1. Make sure the license key is valid.
  2. Generate a new license key and log in again.