Cisco Wireless LAN Controller Configuration Guide, Release 7.4
Configuring Authentication for the Controller and NTP/SNTP Server
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Configuring Authentication for the Controller and NTP/SNTP Server

Configuring Authentication for the Controller and NTP/SNTP Server

Information About Configuring Authentication for the Controller and NTP/SNTP Server

Cisco WLCs must synchronize time with an NTP/SNTP server by authentication. By default, an MD5 checksum is used.

Configuring the NTP/SNTP Server for Authentication (GUI)


    Step 1   Choose Controller > NTP > Server to open the NTP Severs page.
    Step 2   Click New to add a new NTP/SNTP Server.
    Step 3   In the Server Index (Priority) text box, enter the NTP/SNTP server index.

    The controller tries Index 1 first, then Index 2 through 3, in a descending order. Set this to 1 if your network is using only one NTP/SNTP server.

    Step 4   Enter the server IP address.
    Step 5   Enable or disable the NTP/SNTP Authentication.
    Step 6   If you enable the NTP/SNTP Authentication, enter the Key Index.
    Step 7   Click Apply.

    Configuring the NTP/SNTP Server for Authentication (CLI)

    • config time ntp auth enable server-index key-index—Enables NTP/SNTP authentication on a given NTP/SNTP server.

    • config time ntp key-auth add key-index md5 key-format key—Adds an authentication key. By default MD5 is used. The key format can be "ascii" or "hex".

    • config time ntp key-auth delete key-index—Deletes authentication keys.

    • config time ntp auth disable server-index—Disables NTP/SNTP authentication.

    • show ntp-keys—Displays the NTP/SNTP authentication related parameter.