Configuring IP Multicast over Fabric Connect on a brouter port within the GRT

Use this procedure to enable IP Multicast over Fabric Connect on a brouter port IP interface. The default is enabled.

To configure a brouter port for a VRF with IP Multicast over Fabric Connect, see Configuring IP Multicast over Fabric Connect on a brouter port for a Layer 3 VSN.

Note

You do not have to enable IP Shortcuts to support IP multicast routing in the GRT using SPBM.
You cannot enable IP PIM when IP Multicast over Fabric Connect is enabled on the VLAN.

Before you begin

You must configure the required SPBM and IS-IS infrastructure, which includes the creation of SPBM B-VLANs.
You must create the C-VLANs and add slots/ports.
You must enable IP Multicast over Fabric Connect globally.
If there is no IP interface on the VLAN, then you create one. (The IP interface must be in the same subnet as the IGMP hosts that connect to the VLAN).

About this task

With IP Multicast over Fabric Connect within the GRT, routing of IP multicast traffic is allowed within the subset of VLANs in the GRT that have IP Multicast over Fabric Connect enabled. When you enable IP Multicast over Fabric Connect on a VLAN, the VLAN automatically becomes a multicast routing interface.

You must enable IP Multicast over Fabric Connect on each of the VLANs within the GRT that need to support IP multicast traffic. After you enable IP Multicast over Fabric Connect on the VLANs, any IGMP functions required for IP Multicast over Fabric Connect within the GRT are automatically enabled.

If you only want to use IP Multicast over Fabric Connect, you do not need to enable the Layer 3 VSN or redistribute unicast routes into or out of IS-IS. IP Multicast over Fabric Connect routing does not depend on unicast routing, which allows for you to more easily migrate from a PIM environment to Multicast over Fabric Connect. You can migrate a PIM environment to IP Multicast over Fabric Connect first, and then migrate unicast separately or not at all.

The switch only supports IPv4 addresses with IP Multicast over Fabric Connect.

Procedure

Select an enabled port on the Physical Device View.
In the navigation pane, expand Configuration > Edit > Port.
Click IP.
Click the SPB Multicast tab.
Click Enable.

Note

When you enable IP Multicast over Fabric Connect on a DvR Controller switch in a DvR domain, the configuration is automatically pushed to the Leaf nodes within the domain.
Click Apply.

SPB Multicast field description

Use the data in the following table to use the SPB Multicast tab.


Name	Description
Enable	Enables or disables SPB Multicast. The default is disable.