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Access network design for branch, remote, outdoor, and campus locations with HPE Aruba Networking access points and mobility controllers.
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ap315 - Port C15-Excessive undersized/giant packets

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  • 1.  ap315 - Port C15-Excessive undersized/giant packets

    Posted Nov 29, 2018 11:15 PM

    Hi,

     

    Would someone be able to help point me in the right direction. I have two ap's currently connected for testing. An ap303 and a ap315, the 315 creates error messages on the access switch. these can vary from every 1-10 minutes. controllers are 7210.

     

    Thanks,

    Rob



  • 2.  RE: ap315 - Port C15-Excessive undersized/giant packets

    Posted Nov 30, 2018 12:13 AM

    which version is this?



  • 3.  RE: ap315 - Port C15-Excessive undersized/giant packets

    Posted Nov 30, 2018 06:09 AM

    arubaos 8.3.0



  • 4.  RE: ap315 - Port C15-Excessive undersized/giant packets

    EMPLOYEE
    Posted Nov 30, 2018 01:39 AM
    @PeeMan wrote:

    Hi,

     

    Would someone be able to help point me in the right direction. I have two ap's currently connected for testing. An ap303 and a ap315, the 315 creates error messages on the access switch. these can vary from every 1-10 minutes. controllers are 7210.

     

    Thanks,

    Rob

    Please see here: https://community.arubanetworks.com/t5/Controller-Based-WLANs/ArubaOS-AP-MTU-Support/ta-p/178128



  • 5.  RE: ap315 - Port C15-Excessive undersized/giant packets

    Posted Dec 04, 2018 10:52 PM

    we are using 5406 zl2 switches, the vlan which the ap's are connected to do not have jumbo frames enabled. 

     

    are you suggesting that perhaps the ap and controller are negiotiating 1578 and passing this onto the switch? 



  • 6.  RE: ap315 - Port C15-Excessive undersized/giant packets
    Best Answer

    EMPLOYEE
    Posted Dec 05, 2018 12:20 AM

    It is basically the access points doing path mtu discovery every minute.  The article here:  https://community.arubanetworks.com/t5/ArubaOS-and-Controllers/Oversize-jumbo-frame-errors/m-p/5421/highlight/true#M1860 explains it better.  You can set the MTU to 1500 in the AP system profile of the AP group to make the giants go away, but they are cosmetic, really.



  • 7.  RE: ap315 - Port C15-Excessive undersized/giant packets

    Posted Dec 05, 2018 02:18 PM

    I have set the SAP MTU ito 1500 in the AP Group profile, i needed to enable the show advanced profiles option under user/preferences first to see  the profiles tab to make changes in the GUI. Thanks for your help.