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  • 1.  Aruba 6300/ArubaOS-CX switches not learning FQDN from Endpoints

    Posted Jun 13, 2025 01:25 AM

    Hello Team,

    We have integrated Aruba-CX switches with Cisco ISE for Endpoint profiling. Cisco ISE is configured to use FQDN and other attributes to identify and profile endpoints such as printers, IP phones, etc.

    However, we've observed that the FQDN attribute is not consistently learned or visible on the ISE side. This behavior appears to be random across different endpoints.

    Could you please advise on the following:

    1. How can we verify whether the Aruba-CX switch is learning the FQDN from the endpoint?
    2. Is there a way to confirm if the switch is forwarding the FQDN attribute to Cisco ISE?
    3. Are there specific configurations or logs on Aruba-CX or ISE that we should check to troubleshoot this issue?

    Any guidance or best practices for ensuring consistent FQDN profiling would be greatly appreciated.



  • 2.  RE: Aruba 6300/ArubaOS-CX switches not learning FQDN from Endpoints

    Posted Jun 13, 2025 11:34 AM

    DHCP relay should send this. Why are you using DNS probe? Is DHCP probe enabled on ISE? Are the endpoints actually sending their hostname in the DHCP request?




  • 3.  RE: Aruba 6300/ArubaOS-CX switches not learning FQDN from Endpoints

    Posted Jun 13, 2025 02:35 PM

    How i can verify if endpoints sending their hostname to switch, Is there any command 

    or I Packet capture is the only option




  • 4.  RE: Aruba 6300/ArubaOS-CX switches not learning FQDN from Endpoints

    Posted Jun 13, 2025 02:48 PM
    Packet Capture the DHCP transaction





  • 5.  RE: Aruba 6300/ArubaOS-CX switches not learning FQDN from Endpoints

    Posted Jun 13, 2025 03:22 PM

    Can we get specific steps to capture DHCP transition, I tried to do through mirroring and exported file, but i unable to see DHCP packet capture




  • 6.  RE: Aruba 6300/ArubaOS-CX switches not learning FQDN from Endpoints

    Posted Jun 13, 2025 03:25 PM
    Do a packet capture on ClearPass