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Aruba RAPs and StarLink

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  • 1.  Aruba RAPs and StarLink

    Posted Dec 15, 2021 09:44 PM
    At my work we have attempted to deploy Aruba RAPs on satellite internet connections but they have failed to handle the long latency associated with Satellite links (200ms+)

    However the latency often reported with StarLink which uses a LEO constellation of satellites is around 20-60 ms and with lower packet loss than associated with DSL.

    I am interested in anyone's experience with using ArubaRAPs over StarLink.
    - Does the Aruba RAP maintain a stable connection?
    - What is the performance for tools like Teams / Zoom etc

    Any feedback relating to using Aruba's RAP technology over StarLink would be most appreciated.

    Richard Frost

  • 2.  RE: Aruba RAPs and StarLink

    Posted Dec 17, 2021 10:24 AM
    Please check with support why your RAP is unstable at the 200ms links. I can imagine performance is not that great, as it would not be with just internet traffic, but would not see why it becomes unstable.

    I know just 2 people who deployed StarLink (and told me ;)); so I can imagine not so many people deployed a RAP over that link. I didn't hear big issues with Teams/Zoom (without the RAP), it even seems to work better than expected.

    Herman Robers
    If you have urgent issues, always contact your Aruba partner, distributor, or Aruba TAC Support. Check https://www.arubanetworks.com/support-services/contact-support/ for how to contact Aruba TAC. Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba Networks.

    In case your problem is solved, please invest the time to post a follow-up with the information on how you solved it. Others can benefit from that.

  • 3.  RE: Aruba RAPs and StarLink

    Posted Dec 19, 2021 05:52 PM

    Thanks for your reply!

    Much appreciated.

    If I do find out about how RAPs work over StarLink I will post information here against my original post. 

    Richard Frost

  • 4.  RE: Aruba RAPs and StarLink

    Posted Dec 20, 2021 06:29 PM
    Hello Herman

    Can you post your experience with the RAP on a StarLink connection - I am interested in latency between the RAP and the RAP Mobility Controller 

    Does Airwave track latency between RAPs and the Mobility Controllers?
    I can see latency for how long an IP Address is assigned via DHCP but that is not indicative of the link latency rather latency on the Mobility Controller's end to assign a end of tunnel IP address.

    If Airwave does not track latency - what tools are people using to measure latency over RAP connections?

    One that comes to mind is iPerf that could be used.

    Richard Frost

  • 5.  RE: Aruba RAPs and StarLink

    Posted Dec 20, 2021 04:35 AM

    I am one of the two guys Herman talked about 😁
    I'm currently on holidays (do not at home), but I will try this as soon as I get back home.


    Fabien Giraud

  • 6.  RE: Aruba RAPs and StarLink

    Posted Feb 15, 2022 03:28 PM
    Since October 2021 we have been using a RAP-3WNP through the Starlink network, and it works very well.
    However, since February 8, 2022 it doesn't work anymore and we had to put the RAP back on the ADSL network with the FAI Orange (France).
    The company SpaceX does not see any problem on its Starlink network and asks us for the "logs" of the RAP for analysis.
    The RAP was provided to us by the client (2014) in order to establish a permanent link between the client (Guyana) and our company (France).
    Not having the initial control of this product, I totally do not know how to recover a log inside, if you have an idea….
    I hope I'm on the right thread and thank you in advance for the answers.

    Carbonnel Alain

  • 7.  RE: Aruba RAPs and StarLink

    Posted Feb 17, 2022 06:49 AM
    Hi Alain,

    with show ap debug... you don't have the info ?

    it is RAP mode or IAP-VPN Mode ?

    PowerArubaSW : Powershell Module to use Aruba Switch API for Vlan, VlanPorts, LACP, LLDP...

    PowerArubaCP: Powershell Module to use ClearPass API (create NAD, Guest...)

    PowerArubaCL: Powershell Module to use Aruba Central

    PowerArubaCX: Powershell Module to use ArubaCX API (get interface/vlan/ports info)..

    ACEP / ACMX #107 / ACDX #1281

  • 8.  RE: Aruba RAPs and StarLink

    Posted Feb 17, 2022 08:06 AM

    Hi Alexis,


    Thank you for your post

    I'm not an ARUBA equipment specialist.
    This product was supplied to us by our client as part of an H24 industrial surveillance since 2014 between our company (Métropole France) and Guyana (Kourou).

    I spoke to the client yesterday, and he explained:


    Once a RAP box is controlled by the VPN concentrator it is no longer administratable locally (to my knowledge).

    It is not possible to retrieve logs on it.

    At the concentrator level it is possible to see connection logs and possibly to identify the problems encountered.

    In terms of operation the case just mounts a secure connection between it and the concentrator.

    This is IPSEC protocol (TCP/UDP 4500 and TCP/UDP 500).


    However, if our RAP can no longer contact the concentrator for an unknown reason, the log of the hub will be useless.


    I was wondering if the RAP contacted a site as part of some validation before establishing the VPN.... ?


    As an attachment, the block diagram.






  • 9.  RE: Aruba RAPs and StarLink

    Posted Feb 17, 2022 07:20 AM
    Historically the RAP-5WN has a debug interface in the GUI but only while provisioning it for the first time:https://community.arubanetworks.com/browse/articles/blogviewer?blogkey=ddca64b1-756d-4eac-af26-d8fab7a7c797
    EDIT: you said 3WN

    The underside of the RAP-5WN has a connector for a little-used and rare console cable that could be used to observe the sapd_debug_log and the rapper.log file that would show AP connectivity attempts.  I am not even sure there is a way to obtain this cable anymore:  Maybe an Aruba SE near you would have it.

    Any AP can be provisioned as a remote AP and I would find an AP with a more common console cable and provision that successfully first via DSL.  After, I would move that AP to the starlink connection and plug the console cable into that AP and attempt to tail the sapd_debug_log or the rapper log to find out why it is not connecting.  It would be best to get help from HPE technical support in that endeavor along with whoever maintains your remote AP controller so that they can monitor the incoming traffic.  This definitely will not be easy...

    Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba Networks.

  • 10.  RE: Aruba RAPs and StarLink

    Posted Feb 17, 2022 08:52 AM

    Hello Joseph,
    Thank you so much for your post.
    This is a RAP-3WNP. I saw this connector under the case and I thought it should be used for a console. The idea of going through this connector to get info is very attractive.
    If one is in the traditional, one should be on RS232 n.8.1 to 9600bds.
    I found the position of the Pins on the internet, so no problem to establish a connection with a terminal, but the problem is to know the commands to send to see the logs...