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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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80% of network traffic is 0 - 12Mbps multicast

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  • 1.  80% of network traffic is 0 - 12Mbps multicast

    Posted Dec 22, 2017 06:37 AM

    HI

     

    have a network at 6.5.1.3 where clients experience connection loss, slow speed and masse latency with real time traffic

     

    I have enabled BCMC optimization on VLAN nad BC/MC rate optimization optimization in SSID Profile. 

    Network looks ok from a setup view, most VRD settings are configured as per recommendations ...

     

    soooo --- where should I look next... ? 



  • 2.  RE: 80% of network traffic is 0 - 12Mbps multicast

    Posted Dec 22, 2017 06:50 AM

    i see that IGMP og IGMP Snooping/Proxy isn't turned on VLAN. that would convert BC/MC from wired to unicast on wireless? 



  • 3.  RE: 80% of network traffic is 0 - 12Mbps multicast

    EMPLOYEE
    Posted Dec 22, 2017 08:48 AM

    We need more information:

     

    - What kinds of access points are these?

    - What channel width are you running? (80mhz, 40mhz or 20 mhz)

    - What kind of clients are these and how many users do you have on access points?

    - How many access points do you have?

     



  • 4.  RE: 80% of network traffic is 0 - 12Mbps multicast

    Posted Dec 22, 2017 09:03 AM

    first of all, I missed a VLAN for setting the BCMC optimization. After setting that it went from 82% multicast at 0 - 12 Mbps to 2% 12 - 24mbps and most of the rest of the traffic spanning from 80 - 200Mbps.

     

    1. AP325

    2.40Mhz

    3. Win10 - no APs above 10 - 15 users (99APs)

    4. 99 APs



  • 5.  RE: 80% of network traffic is 0 - 12Mbps multicast

    EMPLOYEE
    Posted Dec 22, 2017 09:25 AM

    Setting bcmc optimization on a VLAN is the same as setting "Drop Broadcast and Unknown Multicast" on your Virtual APS.

     

    What you should be looking at is the Channel Utilization on the AP dashboard...



  • 6.  RE: 80% of network traffic is 0 - 12Mbps multicast
    Best Answer

    EMPLOYEE
    Posted Dec 22, 2017 09:25 AM

    Setting bcmc optimization on a VLAN is the same as setting "Drop Broadcast and Unknown Multicast" on your Virtual APS.

     

    What you should be looking at is the Channel Utilization on the AP dashboard...



  • 7.  RE: 80% of network traffic is 0 - 12Mbps multicast

    Posted Dec 22, 2017 09:27 AM

    before we changed bcmc setting we had channel utilization fro, 75% on many of the 2,4Ghz channels and a couple of the lower 5Ghz channels. But (it might be a coincidence) after we enabled bcmc optimization, channel utilization improved massively



  • 8.  RE: 80% of network traffic is 0 - 12Mbps multicast

    EMPLOYEE
    Posted Dec 22, 2017 09:37 AM

    It is not a coincidence.  Broadcast propagation has a direct impact on channel utilization.



  • 9.  RE: 80% of network traffic is 0 - 12Mbps multicast

    Posted Dec 27, 2017 02:02 AM

    thanks --- -will look into performance today. hopefully there's enough load to get a good test