Observability for multicast

This page describes the observability features that you can use to monitor multicast traffic in Google Cloud.

Overview

For an overview of the observability features that are available for multicast and in which project, see the following table.

Feature Description Applicable projects1
Group membership event logs
in Cloud Logging		 You can view logs for multicast group membership events, such as Internet Group Management Protocol (IGMP) join requests. For more information, see View multicast group membership event logs.
  • Multicast administrator projects
  • Multicast consumer projects
Multicast metadata
in VPC Flow Logs		 You can view flow logs that contain additional metadata for multicast traffic. For more information, see View flow logs for multicast.
  • Multicast administrator projects
  • Multicast consumer projects
Multicast membership metrics
in Cloud Monitoring		 You can view and use metrics for multicast group control messages and the number of active multicast consumers in a group. For more information, see Monitor metrics for multicast.
  • Multicast administrator projects

1For multicast domains that use the single VPC network topology, the multicast administrator project is also the multicast consumer project. For multicast domains that use the Network Connectivity Center (NCC) star topology, there can be separate multicast consumer networks in different projects. The multicast producer network is always in the multicast administrator project, regardless of the topology of the multicast domain.

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