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AR Router Troubleshooting Guide

This Product Documentation provides guidance for maintaining AR Enterprise Router, covering common information collection and fault diagnostic commands, typical fault troubleshooting guide, and troubleshooting.
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Failed to Manage AR Using CWMP

Failed to Manage AR Using CWMP

Common Causes

The fault symptoms are as follows:
  • The AR cannot set up a connection with the ACS.
  • The ACS fails to issue configurations to the AR.
This fault is commonly caused by one of the following:
  • The CWMP settings on the AR are incorrect, for example, the setting of ACS's URL, user name, or password is incorrect, or the CWMP function is disabled on the AR.
  • There is no reachable route between the AR and the ACS.
  • The AR does not support parameters in the packets received from the ACS.

Troubleshooting Flowchart

Figure 14-13 shows the troubleshooting flowchart.

Figure 14-13 CWMP troubleshooting flowchart

Troubleshooting Procedure

NOTE:

Saving the results of each troubleshooting step is recommended. If troubleshooting fails to correct the fault, you will have a record of your actions to provide Huawei technical support personnel.

Procedure

  1. Verify the CWMP settings on the AR.

    Run the display cwmp configuration command in the system view to check whether the CWMP function is enabled and the ACS's URL, user name, and password are correctly set.

    <Huawei> display cwmp configuration
      CWMP is enabled
      ACS URL:                         http://www.acs.com:80/acs
      ACS username:                    hwcpe
      ACS password:                    %@%@x:J6T3+\>-7JE_7mDOKM,v`c%@%@
      Inform enable status:                 disabled
      Inform interval:                      600s
      Inform time:                          -
      Wait timeout:                         30s
      Reconnection times:                   3
    
    • If the CWMP settings are correct, go to step 2.
    • If the CWMP settings are incorrect, modify them based on Table 14-3, and run the undo cwmp enable and cwmp enable commands to re-enable the CWMP function.
    Table 14-3 CWMP settings
    Item Method
    Enable the CWMP function. Run the cwmp enable command in the CWMP view.
    Configure the URL used by the AR to connect to the ACS. Run the cwmp acs url url command in the CWMP view.
    Configure the user name used by the AR to connect to the ACS. Run the cwmp acs username username command in the CWMP view.
    Configure the ACS's password used by the AR to connect to the ACS. Run the cwmp acs password cipher password command in the CWMP view.

  2. Check that there is a reachable route between the AR and ACS.

    Run the ping command on the AR to ping the ACS.

    NOTE:
    If you have configured the ACS's URL as a domain name, use the display dns dynamic-host command to obtain the IP address, and enter the IP address in the ping command.
    <Huawei> display dns dynamic-host
      No  Domain-name           IpAddress            TTL      Alias
      1   huawei.com            2.1.1.3              3579  
    • If the AR fails to ping the ACS, rectify the ping fault based on The Ping Operation Fails.
    • If the AR can ping the ACS, go to step 3.

  3. Check whether the parameters in the packets received from the ACS are supported by the device.

    Capture the packets exchanged between the ACS and the device using Ethereal or other packet catchers, and check the parameters in <Name></Name>.

    • If the parameters are not supported by the AR, the ACS cannot manage the AR.
    • If all parameters are supported by the AR, go to step 4.

  4. Collect the following information and contact technical support personnel:

    • Results of the preceding troubleshooting procedure
    • Configuration file, log file, and alarm file of the AR

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Updated: 2019-08-09

Document ID: EDOC1000079719

Views: 528292

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