multicast-domain share-group

Usage Scenario

All the VPN instances on the PEs that belong to the same multicast domain (MD) must be added to a public group (share-group). MTIs are multicast tunnel interfaces. The local PE sends VPN data through its MTI, and the remote PE receives VPN data through its MTI. To implement multicast VPN, you need to specify a share-Group in the VPN instance and bind an MTI to the VPN instance.

Prerequisites

The command applies only to the scenario where multicast routing is enabled in the VPN instance.

Precautions

On the same provider edge (PE), different Share-Group addresses are configured for different VPN instances. The value of shareGrpAddr must be different from the Switch-Group addresses of all the instances on this PE and mtunnel-number must be different from that of the MTI that has been created.

You cannot perform the same configuration repeatedly in the same VPN instance view. Instead, you can configure the new address and the MTI only after the previous configuration is deleted.

The IP address and maximum transmission unit (MTU) can be configured on the MTI. The MTU is an integer that ranges from 46 to 1500 bytes.After the undo multicast-domain share-group command is run, the MTI and the configurations related to the multicast-domain switch-group-pool, multicast-domain log switch-group-reuse, and multicast-domain switch-delay commands are deleted.

If multicast is enabled in a VPN instance and the multicast-domain share-group command is used to specify an Mtunnel interface to be bound to the VPN instance, the Mtunnel interface will be automatically bound to the VPN instance. The configuration of the binding between the Mtunnel and VPN instance can be displayed in the configuration file.