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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C4K_EBM-4-HOSTFLAPPING

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  • 1.  C4K_EBM-4-HOSTFLAPPING

    Posted Apr 21, 2014 07:09 AM
    Following are   log  error:
     
     %C4K_EBM-4-HOSTFLAPPING: Host 7C:11:BE:19:45:32 in vlan 390 is flapping between port Gi4/21 and port Gi4/3
     
    This is Cisco4506 log,but  The Vlan 390 is Aruba Wifi User vlan , G4/21 and G4/3 connect Aruba-Master and Aruba-Local,
     
    I tested my wireless is  normal. Mater and Local is Ok. I don't  know how to explain this  log.
     
     


  • 2.  RE: C4K_EBM-4-HOSTFLAPPING

    EMPLOYEE
    Posted Apr 21, 2014 08:00 AM
    Are the same VLANs tagged on both of those links? Are they joined in a
    port-channel?


  • 3.  RE: C4K_EBM-4-HOSTFLAPPING

    Posted Apr 21, 2014 09:11 PM

    interface GigabitEthernet4/3
     switchport trunk encapsulation dot1q
     switchport trunk allowed vlan 80,390,391
     switchport mode trunk

     

    interface GigabitEthernet4/21
     switchport trunk encapsulation dot1q
     switchport trunk allowed vlan 80,390,391
     switchport mode trunk

     

    Today, I found  a similar  log,but this is rarely


  • 4.  RE: C4K_EBM-4-HOSTFLAPPING
    Best Answer

    Posted May 05, 2014 09:17 AM

    can you figure out what that MAC belongs to? a client / an AP / mobility controller?

     

    how are your APs spread out of the master / local?

     

    could be the client just moves from one master to local via the AP and then this can happen.



  • 5.  RE: C4K_EBM-4-HOSTFLAPPING

    Posted May 05, 2014 09:53 PM

    The Mac is client. I don't agree with the result of  client  roaming。Thanks