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  • 1.  iptv multicast L2 network

    Posted Nov 15, 2021 05:09 PM
    Hello everyone.

    I am not an experienced network engineer but slowly learning by doing:)
    We currently have a customer who have ordered iptv. The iptv solution is kind of a server which is connected to our LAN with multicast signal.
    Our LAN is 1 fortigate 60F for internet connectivity and default gw for all vlans.
    We have 4 of the Aruba 6100 48p switches (JL675A)

    The problem is that the multicast signal is flooding all our ports (the access ports for the iptv vlan, and the trunk ports which include iptv vlan)
    I have tried to configure one of the 6100 switches as querier, and when I run show ip igmp it showes the following

    VRF Name : default
    Interface : vlan102
    IGMP Configured Version : 3
    IGMP Operating Version : 3
    Querier State : Querier
    Querier IP [this switch] : 10.0.100.15 (in the same subnet as iptv server)
    Querier Uptime : 6d 5h 38m
    Querier Expiration Time : 1m 12s
    IGMP Snoop Enabled on VLAN : True

    Active Group Address Vers Mode Uptime Expires
    ---------------------- ---- ---- --------- ---------
    224.0.57.52 3 EXC 39m 30s 3m 37s
    224.0.57.53 3 EXC 39m 13s 3m 39s
    224.0.57.108 3 EXC 39m 58s 3m 32s
    224.0.57.156 3 EXC 39m 26s 3m 38s

    I have also tried to enable igmp and igmp snooping on the vlan that carries iptv.

    But when I look at the show interface utilization all ports have tx rate as if they were watching iptv.
    I have read a couple of places that igmp snooping is difficult without a router, but I really thought that the querier function should do the same.

    Anybody got some tips for me on how to reduce the flooding and also just grab the bandwith of the one channel that the tv is watching instead of the whole multicast stream?
    Do I have to make static groups for all "tv channels" in the igmp snooping static-group config?

    Hope somebody have done something similar before and can give me a helping hand.

    Regards
    Jørgen

    ------------------------------
    Jørgen Wasmuth
    ------------------------------


  • 2.  RE: iptv multicast L2 network

    Posted Feb 11, 2022 04:38 AM
    Edited by James69 Feb 11, 2022 04:39 AM
    Thanks for the information, I will try to figure it out for more.

    ------------------------------
    James Gross
    ------------------------------

    Original Message


  • 3.  RE: iptv multicast L2 network

    Posted Feb 16, 2022 04:07 AM
    I figured this one out.
    I changed the design.
    I connected the iptv central to the fortigate firewall and enabled multicast routing.
    On the switches I enabled igmp snooping on that particular vlan.
    I had to reboot the switches for the igmp snooping to be effective. The way I figured that one out is that I installed a brand new switch (same model as the others) and everything worked on that switch as soon as I enabled igmp snooping.
    So I rebooted one of the other switches and that one also started working.
    So all is good now.

    ------------------------------
    Jørgen Wasmuth
    ------------------------------

    Original Message


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