How to disable multicast on a single port

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Solution 1

Based on this link, on page 252, here are the necessary steps to disable multicast flooding on a specific port.

  1. Click Multicast > Forward All. The Forward All page opens.
  2. Define the following:
    1. VLAN ID equals to—The VLAN ID the ports/LAGs are to be displayed.
    2. Interface Type equals to—Define whether to display ports or LAGs.
  3. Click Go. The status of all ports/LAGs are displayed.
  4. Select the port/LAG that is to be defined as Forward All by using the following methods:
    1. Static—The port receives all Multicast streams.
    2. Forbidden—Ports cannot receive any Multicast streams, even if IGMP/MLD snooping designated the port to join a Multicast group.
    3. None—The port is not currently a Forward All port.
  5. Click Apply. The Running Configuration file is updated.

Solution 2

For future reference, I think the option you are looking for may be 'Unregistered Multicast' filtering on the SG300s. (I tried the previous answer's suggestion but that wasn't enough to help in itself for me)

I just had a Meraki router which was for some reason, subscribing to our Symantec Ghost Multicast sessions, not ideal! Setting Unregistered Multicast to Filtering for the port it was connected to sorted the issue and allowed us to get better Ghost performance too.

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Chase Florell
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Chase Florell

I'm a developer in BC Canada and one of the owners of Flo Media Group Inc. I work primarily in C# .NET, Xamarin, HTML5 and Javascript, and I'm also very passionate about DevOps, and have been known to sling my fair share of PowerShell. When I'm not coding, I'm enjoying time with my wonderful wife and children, riding my motorcycle, camping in the summer months, snowboarding in the winter, or maybe just a round at the Golf Course. I Blog Here, and I'm also on Linkedin Contact Me

Updated on September 18, 2022

Comments

  • Chase Florell
    Chase Florell over 1 year

    We just finished deploying 2 SG300-28 switches in our network. We're building a voLANte video distribution network, so all ports were enabled to have multicasting support.

    The problem we face is that our Crestron AV2 doesn't support Multicasting. Do any of you know how to disable multicasting on a single port?

    Here's the running config if it matters

    no spanning-tree
    interface port-channel 1
    description Default
    exit
    bridge multicast filtering
    vlan database
    default-vlan vlan 999
    exit
    vlan database
    vlan 1 
    exit
    voice vlan oui-table add 0001e3 Siemens_AG_phone________
    voice vlan oui-table add 00036b Cisco_phone_____________
    voice vlan oui-table add 00096e Avaya___________________
    voice vlan oui-table add 000fe2 H3C_Aolynk______________
    voice vlan oui-table add 0060b9 Philips_and_NEC_AG_phone
    voice vlan oui-table add 00d01e Pingtel_phone___________
    voice vlan oui-table add 00e075 Polycom/Veritel_phone___
    voice vlan oui-table add 00e0bb 3Com_phone______________
    interface range gi25-28
    channel-group 1 mode on
    exit
    ip igmp snooping
    ip igmp snooping vlan 999 
    ip igmp snooping vlan 999 mrouter interface Po1 
    interface vlan 999
    ip igmp query-interval 30 
    ip igmp last-member-query-interval 100 
    exit
    interface range  gi1-28
    bridge multicast unregistered filtering 
    exit
    ip igmp snooping vlan 999 querier 
    ip igmp snooping vlan 999 querier address 192.168.1.254 
    interface vlan 999
    ip address 10.10.10.2 255.255.255.0 
    exit
    ip default-gateway 10.10.10.1
    interface vlan 999
    no ip address dhcp 
    exit
    no boot host auto-config
    no bonjour enable
    hostname switchb18a77
    no snmp-server server
    

    It appears to me as though this would be called "Unicast and Multicast Flood Blocking"

    • smithian
      smithian over 11 years
      You're not describing what problem you're having. If your crestron doesn't support multicast, it shouldn't be joining and IGMP groups and shouldn't be receiving any multicast frames.
    • Chase Florell
      Chase Florell over 11 years
      the problem I'm having is that my Crestron has to run on the same network/vlan, but needs to NOT have multicasting enabled on it's specific switch port.
    • Chase Florell
      Chase Florell over 11 years
      The crestron keeps getting locked up and loses it's connectivity. This has only begun happening since multicasting was enabled. Unfortunately, we need to run a multicast network for all our voLANte devices.