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  • 1.  Aruba-CX Switch OSPF issue

    Posted Jul 06, 2026 05:36 AM

    Dear,

    I have an issue with OSPF process on an Aruba-cx switch, the switch first establish a neighbor relationship and everthing is fine. After about  20 minutes, the process as if it crashes, it stop showing the neighbors and the router-id but the OSPF routes are still present in the routing table.

    Please do you have any idea about the source of this issue ?

    Best regards



  • 2.  RE: Aruba-CX Switch OSPF issue

    Posted Jul 12, 2026 01:31 AM

    you need to provide more info like what switch model do you see this issue and the firmware version.



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    If my post was useful accept solution and/or give kudos.
    Any opinions expressed here are solely my own and not necessarily that of HPE or Aruba.
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  • 3.  RE: Aruba-CX Switch OSPF issue

    Posted Jul 14, 2026 11:31 AM

    Usually the first instinct is to upgrade to latest release you are in or preferably to latest LSR release patch. Just for the case if this issue is already solved.

    If this is not viable and you are on supported release, open a TAC case.

    You can check log entries for clues. 

    Best, Gorazd

     



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    Gorazd Kikelj
    MVP Guru 2025
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  • 4.  RE: Aruba-CX Switch OSPF issue

    Posted Jul 15, 2026 10:01 AM

    Something to check that happened quite a few years ago.  We upgraded our firewall and the OSPF routes would 'crash' every 20 minutes with the sort of thing you're seeing.

    Problem turned out to be that the firewall default route was the core Aruba-CX switch and the Aruba-CX OSPF default route was the firewall.  Due to this - 'unknown' traffic was bounced between the two and every 20 minutes the routing crashed.  The fix was removing one of the default routes (on the firewall for us) and this fixed the issue.

    At the time neither HPE or the firewall TAC were not much use (each blamed the other manufacturers device).  Thankfully a very (now retired) knowledgeable colleague worked it out.

    May be something completely different but "just in case" its something to check.