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Alerts Interface flapping

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  • 1.  Alerts Interface flapping

    Posted Nov 02, 2023 11:04 AM

    Hello fellow AirHeads!! 

    I have an issue where I'm getting alerts for an interface flapping in quick secession. When looking at all the interfaces in the MM cli there are no interfaces flapping in the logs. Also, the show network cmd doesn't display any data.

    My question is, how can I use the only information the alert gives me, the ifindex, to find the actual interface that is trigging the alert? The current version is 8.2.13.0

    AP Status wlsxVlanInterfaceEntryChanged wlsxTrapVlanId.0: 1, wlsxTrapTime: 11/2/2023
    7:41:59 UTC-4, wlsxTrapTableEntryChangeType.0: modify(3),
    wlsxTrapTableGenNumber.0: 306459
    AP Status wlsxVlanLinkDown wlsxTrapVlanId.0: 1, wlsxTrapAdminStatus.0: enabled(1),
    wlsxTrapOperStatus.0: down(2), wlsxTrapTime: 11/2/2023 7:41:59 UTC-4
    Software linkDown ifIndex.16386: 16386, ifAdminStatus.16386: up(1),
    ifOperStatus.16386: down(2)

    Thanks for your help in advance



  • 2.  RE: Alerts Interface flapping

    EMPLOYEE
    Posted Nov 03, 2023 11:08 AM

    This looks like the VLAN interface is going up/down in operational state. If there are no interface (and no clients) in a specific VLAN, the VLAN will go 'operationally down'. What you can do is set the VLAN state to 'operstate up'. I think this can be only done from the CLI:

    (MM01) [] (config) #interface vlan 1
    (MM01) ^[] (config-submode)#operstate
    operstate               Interface Operation state
    (MM01) ^[] (config-submode)#operstate up

    That will keep the VLAN 'up' regardless if there are interfaces or clients in the VLAN.



    ------------------------------
    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: Alerts Interface flapping

    Posted Nov 13, 2023 12:22 PM

    Thank you Herman for the advise. Unfortunately, it did not resolve my issue. Is there a way I can use the ifindex to find the interface throwing the alert?




  • 4.  RE: Alerts Interface flapping

    EMPLOYEE
    Posted Nov 24, 2023 10:45 AM

    I would not know how. Best to work with Aruba TAC to find that out.



    ------------------------------
    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.
    ------------------------------