Hi, Can the topology mentioned in the link below: https://docs.aws.amazon.com/vpc/latest/tgw/tgw-connect.html ![TGW-Connect-Topology](/media/postImages/original/IMJQa5pFhDToat_VpJvUlgZQ) be used to send the multicast traffic between the VPC like from VPC A and VPC C ? When creating TGW enable Multicast and Create a Connect attachment to create a GRE tunnel to transport the multicast traffic ?

TGW Connect Attachment and Multicast Routing

Hi, Can the topology mentioned in the link below: https://docs.aws.amazon.com/vpc/latest/tgw/tgw-connect.html TGW-Connect-Topology

be used to send the multicast traffic between the VPC like from VPC A and VPC C ? When creating TGW enable Multicast and Create a Connect attachment to create a GRE tunnel to transport the multicast traffic ?

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Hello,

Unfortunately Multicast over TGW connect attachmnt is not supported, see the below comment from the documentation:

Multicast routing is not supported over AWS Direct Connect, Site-to-Site VPN, peering attachments, or transit gateway Connect attachments.

See the complete list of considerations for Multicast on transit gateways here

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Tushar_J

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TGW Connect Attachment and Multicast Routing

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