Support Support Downloads Knowledge Base Case Manager My Juniper Community

Knowledge Base

Search our Knowledge Base sites to find answers to your questions.

Ask All Knowledge Base Sites All Knowledge Base Sites JunosE Defect (KA)Knowledge BaseSecurity AdvisoriesTechnical BulletinsTechnotes Sign in to display secure content and recently viewed articles

[WLC] Clearing port-group configuration on the WLC controller

0

0

Article ID: KB32443 KB Last Updated: 15 May 2018Version: 1.0
Summary:
Addition of port groups to a WLC controller may sometimes result in network stability issues such as port flapping and unstable WiFi connections. Clearing the port-group configuration on the WLC controller is one way to resolve these issues. This article explains how you can do so without causing any impact on the production network.
Symptoms:
  • Port flapping 
  • Unstable WiFi connections
Solution:

Perform the following steps to clear the port-group configuration without causing any impact on the production network:

  1. Connect to the WLC controller via a Console (Serial) connection.
    Note: The connection to your network will be disabled in the subsequent steps; therefore, it is required that a connection be made via a Console. 

  2. Take a backup of the controller configuration via TFTP.

    • Execute the following to save the current configuration:‚Äč
    WLC# save configuration <file-name>
    • Copy the file from MX/WLC (controller) to the TFTP server:
    copy <filename> tftp://<TFTP_IP>/<filename>

    Note: Ensure that the file is saved to the directory on the TFTP server as specified in the preceding command.

  3. Disable the port-group configuration:
    WLC# set port-group name <Port-group-name> port <port-ID> mode off
    WLC# set port-group name <Port-group-name> port <port-ID> mode off
  4. Map the management VLAN to the uplink port of the WLC controller and clear the management VLAN from the port group:
    WLC# set vlan <vlan-id> port <port-id> tag <tag-id>
    WLC# clear vlan <vlan-id> port <Port-group-name> tag <tag-id>
  5. Clear the port-group configuration:
WLC# clear port-group name <Port-group-name>

Note:

  • If the uplink ports of the EX switch in which the controllers are connected use Link Aggregation Control Protocol (LACP), port groups cannot be reconfigured on the WLC controller because the WLC controllers are not compatible with LACP.
  • However, if the requirement is to have a port-group configuration on the WLC controller, then the uplink ports of the EX switch must be modified to use static link aggregation group (LAG) after which the port groups can be reconfigured.

Related Links

Comment on this article > Affected Products Browse the Knowledge Base for more articles related to these product categories. Select a category to begin.

Getting Up and Running with Junos

Getting Up and Running with Junos Security Alerts and Vulnerabilities Product Alerts and Software Release Notices Problem Report (PR) Search Tool EOL Notices and Bulletins JTAC User Guide Customer Care User Guide Pathfinder SRX High Availability Configurator SRX VPN Configurator Training Courses and Videos End User Licence Agreement Global Search