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Home > Success Center > Log & Event Manager (LEM) > Troubleshooting Network Devices Logging to LEM

Troubleshooting Network Devices Logging to LEM

Updated June 21st, 2016

Overview

Troubleshooting network devices logging to LEM

Environment

LEM with network devices

Detail

To monitor a network device with LEM, you must first configure the device to send its log messages to LEM. Determine whether or not the device you are troubleshooting is logging to LEM prior to completing the following troubleshooting procedures.

To determine if LEM is receiving data from the device:

  1. Connect to LEM using a virtual console or SSH client.
  2. Access the CMC prompt:
    • Virtual Console: Arrow down to Advanced Configuration, and then press Enter.
    • SSH Client: Log in using your CMC credentials.
  3. At the cmc> prompt, enter appliance.
  4. At the cmc::acm# prompt, enter checklogs.
  5. Enter an item number to select a log file to view.
  6. Check each log file that is not empty for evidence that the device is logging to the appliance, such as the device's product name, device name, or IP address.

Troubleshoot devices that LEM is not receiving messages from 

Complete the following procedure if LEM is not receiving data from one or more network devices:

  1. Verify you have configured the device to send log messages to LEM.
  2. Verify the device is logging to the correct IP address for the LEM appliance.
  3. If the device is sending SNMP traps to the LEM appliance, verify you have configured the LEM appliance to accept SNMP traps.
  4. Verify a firewall is not blocking communication between the device and the LEM appliance.

 

To configure your LEM Manager to accept SNMP traps:

  1. Connect to your LEM appliance using a virtual console or SSH client.
  2. Access the CMC prompt:
    • Virtual Console: Arrow down to Advanced Configuration, and then press Enter.
    • SSH Client: Log in using your CMC credentials.
  3. At the cmc> prompt, enter service.
  4. At the cmc::scm# prompt, enter enablesnmp.
  5. Press Enter to confirm your entry.
  6. After you see the message, Done starting the SNMP service, enter exit to return to the cmc> prompt.

Troubleshoot devices that LEM is receiving messages from

Complete the following procedure if LEM is receiving messages from the network devices:

  1. Verify that you have configured the appropriate connector on the LEM appliance. For information about how to troubleshoot connectors that are out of date, see Troubleshooting 'Unmatched Data' or 'Internal New Tool Data' events in the LEM Console.
  2. Verify the connector you have configured is running.
  3. If the necessary connector is configured and running, delete and recreate the connector instance.

 

 

 

 

 

 

 

 

Last modified
11:23, 24 Mar 2017

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