Is Multicast and Broadcast supported?

Question

Hi

I was wondering if multicast and broadcast are supported in Azure Vnet and Subnet? If not, what alternative options do I have?

Cheers,

Moon

Answer 1

@moon yi

Thank you for reaching out.

I understand you wish to know if multicast and broadcast are supported in Azure Vnet

The answer is No. Multicast and broadcast are not supported.

This currently documented here

https://learn.microsoft.com/en-us/azure/virtual-network/virtual-networks-faq#do-virtual-networks-support-multicast-or-broadcast

Hope this helps! Please let me know if you have any additional questions. Thank you!

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Answer 2

While the clouds do not support Multicast in the cloud, swXtch.io does. swXtch.io implemented a software-based network switch called cloudSwXtch. cloudSwXtch consists of a software network with and a virtual NIC service called a xNIC. Together, these components create a overlay network on top of a standard cloud network. This overlay network adds many valuable network features, one of with is seamless IP multicast experience. With cloudSwXtch, existing user application services that expect standards-based IP multicast will work on any cloud without requiring any code changes. cloudSwXtch enables performance to approach that of bare metal. For more information see: https://docs.swxtch.io/docs/getting-started or find us in the Azure Marketplace.