How to disable multicast on a single port
Solution 1
Based on this link, on page 252, here are the necessary steps to disable multicast flooding on a specific port.
- Click Multicast > Forward All. The Forward All page opens.
- Define the following:
- VLAN ID equals to—The VLAN ID the ports/LAGs are to be displayed.
- Interface Type equals to—Define whether to display ports or LAGs.
- Click Go. The status of all ports/LAGs are displayed.
- Select the port/LAG that is to be defined as Forward All by using the following
methods:
- Static—The port receives all Multicast streams.
- Forbidden—Ports cannot receive any Multicast streams, even if IGMP/MLD snooping designated the port to join a Multicast group.
- None—The port is not currently a Forward All port.
- 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
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, 2022Comments
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Chase Florell over 1 year
We just finished deploying 2 cisco 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"
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smithian over 11 yearsYou'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.
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Chase Florell over 11 yearsthe 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.
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Chase Florell over 11 yearsThe 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.
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