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Virtual Mobility Controller networkging issue

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  • 1.  Virtual Mobility Controller networkging issue

    Posted Oct 10, 2025 02:11 PM
    Edited by toddflbass Oct 10, 2025 02:39 PM

    Hi.  I've been running into some issues with virtual mobility controllers.  I have someone that we created new VWLCs for and put them on VLAN 148.  The G0/0/0 interface of the vWLC and VM adapter 2 interface of VMware were configured for VLAN148.  The controller has no issue working.  I can ping it and it can ping its default gateway.  If I change to try and use G0/0/1 and VM adapter 3 of VMWare with the exact same settings, it doesn't communicate.  Here are the two interface configurations:

    interface gigabitethernet 0/0/0
     desc "GE0/0/0"
     trusted
     trusted vlan 1-4094
     no poe
     switchport mode access
     switchport access vlan 148
     switchport turnk allowed vlan 1-4094
     no spanning-tree
    !
    interface gigabitethernet 0/0/1
     desc "GE0/0/1"
     trusted
     trusted vlan 1-4094
     no poe
     switchport mode access
     switchport access vlan 148
     switchport turnk allowed vlan 1-4094
     no spanning-tree

    As you can see my interface configurations are identical.  The settings in the VMware environment are identical too, access port VLAN 148.  I tried Gig0/0/2 as well and same thing, nothing.  Feeling like I'm hitting a wall here.  Controller looks correct and VMWare looks correct.  Was hoping that someone here has seen this behavior before and its something silly I'm missing.  I'm running 8.10.0.16.



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  • 2.  RE: Virtual Mobility Controller networkging issue

    Posted Oct 14, 2025 11:02 AM

    Did you follow the instructions in the Virtual Appliance Installation Guide?



    ------------------------------
    Carson Hulcher, ACEX#110
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  • 3.  RE: Virtual Mobility Controller networkging issue

    Posted Oct 16, 2025 10:24 AM

    Yes.  Although that guide is dated and shows a dated version of VMWare.

     

    photo

    Todd Snyder
    Senior Network Engineer, AHEAD

    9044516433  |  www.ahead.com  |  todd.snyder@ahead.com

     

     






  • 4.  RE: Virtual Mobility Controller networkging issue

    Posted Oct 15, 2025 07:17 AM

    Assume you didn't enable both interfaces at the same time, as it would create a L2 loop?

    Also not sure where the misspelled switchport turnk comes from? Did you copy this from the CLI output? I would expect switchport trunk.



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

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



  • 5.  RE: Virtual Mobility Controller networkging issue

    Posted Oct 16, 2025 10:27 AM

    Correct.  I had only one interface active at a time.  The typo was from me typing in my config.  The system I'm using for remote access doesn't make it easy for me to copy paste the config so I typed it and had a typo apparently.

    -------------------------------------------



  • 6.  RE: Virtual Mobility Controller networkging issue

    Posted Oct 17, 2025 03:39 AM

    In that case, it doesn't make sense that two interfaces that are configured identical, connected (only one at the time) to a virtual ethernet in ESXi connected to the same vlan, that it doesn't work.

    I can only think of a different configuration in the ESXi or the uplink switch where the vnics are connected to. As you mention that it's another VM adapter, is that different physical NIC and vSwitch on the ESXi? Please double-check the MTU/MAC-Change/Promiscuous settings on the NIC/vSwitch (check installation guides) and the settings on the upstream switch.

    Can't imagine that this is a VMC problem.



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

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



  • 7.  RE: Virtual Mobility Controller networkging issue

    Posted Oct 20, 2025 03:33 PM

    Thanks.  I'll dig further into the VM environment

     

    photo

    Todd Snyder
    Senior Network Engineer, AHEAD

    9044516433  |  www.ahead.com  |  todd.snyder@ahead.com

     

     






  • 8.  RE: Virtual Mobility Controller networkging issue

    Posted Oct 21, 2025 10:14 AM

    What's the reason for configuring a VMC with two identical interfaces?



    ------------------------------
    Carson Hulcher, ACEX#110
    ------------------------------



  • 9.  RE: Virtual Mobility Controller networkging issue

    Posted Oct 21, 2025 01:59 PM

    The VM environment is a virtual distributed system vs a single host like the deployment guides show.  No one seems to be able to figure out where the issue is.

     

    photo

    Todd Snyder
    Senior Network Engineer, AHEAD

    9044516433  |  www.ahead.com  |  todd.snyder@ahead.com

     

     






  • 10.  RE: Virtual Mobility Controller networkging issue

    Posted Oct 21, 2025 05:51 PM

    I recently helped a customer deploy a very similar environment (VDS), I still don't see the relevance of running multiple ethernet interfaces, you can use adapter 1 for management and then adapter 2 for you networking. Just deploy a second virtual controller on a different host if you want resilience. 

    We did run into an issue with NIC teaming, it is described in the link below.  Check the third reply in the link below, to see if that get's you any further. 

    https://airheads.hpe.com/community-home/digestviewer/viewthread?MID=25240



    ------------------------------
    Martijn van Overbeek
    Architect, Netcraftsmen a BlueAlly Company
    ------------------------------



  • 11.  RE: Virtual Mobility Controller networkging issue

    Posted Oct 22, 2025 10:09 AM

    Another odd issue I'm having is getting a trunk to work from Adapter 2/Gig0/0/0

     

    On the controller I had the interface

     

    G0/0/0

    Switchport mode trunk

    Switchport trunk allowed vlan 1-4094
    (If put in a native vlan and left it at default with same results)

     

    On the VM interface it was configured as a trunk with Vlans 1-4094.

     

    Was there a trick or anything you had to do in order to get a trunk to work in this type of deployment?  I've had a co-worked check the VM side and things looked correct on the VM network.

     

    photo

    Todd Snyder
    Senior Network Engineer, AHEAD

    9044516433  |  www.ahead.com  |  todd.snyder@ahead.com

     

     






  • 12.  RE: Virtual Mobility Controller networkging issue

    Posted Oct 23, 2025 10:30 AM

    Is the network assigned to the VM configured to support trunk?

    The vSwitch and port group (assuming using VMware) configuration is important and pretty much non-negotiable.



    ------------------------------
    Carson Hulcher, ACEX#110
    ------------------------------



  • 13.  RE: Virtual Mobility Controller networkging issue

    Posted Oct 23, 2025 11:22 AM

    It is.  I had someone who is more knowledgeable than I am with VMware networking take a look at it.

     

    photo

    Todd Snyder
    Senior Network Engineer, AHEAD

    9044516433  |  www.ahead.com  |  todd.snyder@ahead.com

     

     






  • 14.  RE: Virtual Mobility Controller networkging issue

    Posted Oct 23, 2025 11:29 AM

    I would recommend opening a case with TAC, make sure that when the time comes that TAC wants to do a remote session that you have your VMware person available as well.



    ------------------------------
    Carson Hulcher, ACEX#110
    ------------------------------