Wireless Access

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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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RAP5 with PPPoE, possible MTU issue

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  • 1.  RAP5 with PPPoE, possible MTU issue

    Posted Mar 19, 2013 05:54 AM

    Hello all,

     

    I'm having a RAP5 AP connected to a DSL modem using PPPoE for dialing to the internet. The profile is configured to use split tunnel: traffic for corporate LAN is going though the tunnel, internet traffic is going out locally.

     

    Now for the issue: Some internet sites (tested with www.microsoft.com) cannot be opened in the browser, while others can. I have it down for a possible MTU problem, for when I reduce the max.TCP segement size on the client it works. When I use a DSL router in front of the RAP5 everything works fine, when using a DSL modem and PPPoE the issues occur.

    I wonder if there is a way to tell the RAP5 to use a reduced MTU when connecting?

     

    I have tried to change the SAP MTU value in the AP System Profile (lowest value 1200) but this does have no effect.

     

    Thanks in advance, cheers!