IGMP settings

The Internet Group Management Protocol (IGMP) snooping feature allows interconnects or VLAN interfaces to analyze the IGMP IP multicast membership activities and configure hardware layer 2 switching behavior of multicast traffic to optimize network resource usage. Currently, IGMP v1, v2 (RFC 2236), and IGMPv3 are supported.

You can enable IGMP snooping on:
  • All the interconnects.

  • The specific VLAN tagged network.

  • A range of VLAN tagged networks associated with the logical interconnect.

IGMP idle timeout interval

IGMP idle timeout interval is the Group Membership Interval value, as specified by the IGMP v2 specification (RFC 2236).

For optimum network resource usage, set the timeout interval to match your network multicast router settings.

Data type:

Numeric; unit of measure is seconds.

Valid range: 130-1225 seconds.

Default value:

260

Required:

Yes, if IGMP snooping is enabled.

IGMP Multicast VLAN

IGMP Multicast VLAN (MVLAN) provides an efficient distribution of multicast streams on layer 2 networks. MVLAN reduces the amount of bandwidth required for forwarding multicast traffic between the interconnect and upstream routers. The Multicast VLANs option is disabled by default on the interconnects.

MVLAN configuration

MVLAN configuration is supported only on HPE Virtual Connect SE 100Gb F32 Module for HPE Synergy.

MVLAN uses a port-based MVLAN approach. MVLAN configuration is effective only when IGMP snooping is enabled on all or a subset of VLANs. You can configure an MVLAN and assign a range of multicast group addresses with the MVLAN on the interconnect. The MVLAN must be associated with any one of the uplinks sets before assigning multicast group addresses. The downlink ports must be members of the MVLAN you have configured to work as receiver ports for the hosts. The downlink traffic with hosts is untagged. The interconnect receives one copy of each multicast stream, and then replicates the stream only to the hosts that want to receive it. All other types of multicast traffic are forwarded without modification. You can configure multiple MVLANs, but they must have separate and distinct multicast groups.

You can add MVLANs from either the Logical Interconnects or Logical Interconnect Groups screen.

IGMP proxy reporting

IGMP snooping with proxy reporting or report suppression actively filters the IGMP packets reducing the load on the multicast router. The IGMP proxy reporting is effective only when IGMP snooping is enabled for all or a subset of VLANs. The IGMP proxy reporting is enabled by default.

The IGMP proxy reporting option is supported only on the following interconnects:
  • HPE Virtual Connect SE 100Gb F32 Module for HPE Synergy
  • HPE Virtual Connect SE 40Gb F8 Module for HPE Synergy
You can enable or disable the IGMP proxy reporting configuration on the Logical Interconnect or Logical Interconnect Groups screen.
  • Enabled — The host reports are filtered to minimize traffic to the upstream multicast router.

  • Disabled — The host reports are not filtered. All the host reports are forwarded to the upstream multicast router.

IGMP multicast flood prevention

By default, unregistered IGMP multicast traffic traversing VC Ethernet modules are flooded on the configured Ethernet network. The IGMP multicast flood prevention option prevents the flooding of unregistered multicast. The IGMP multicast flood prevention setting is effective only when IGMP snooping is enabled for all or a subset of VLANs. When enabled, unregistered multicast traffic from uplinks is dropped and traffic from the server ports is redirected to the active uplink port. IGMP multicast flood prevention is disabled by default.

The IGMP multicast flood prevention option is supported only on the following interconnects:
  • HPE Virtual Connect SE 100Gb F32 Module for HPE Synergy
  • HPE Virtual Connect SE 40Gb F8 Module for HPE Synergy