Multicast data for each multicast group on a network needs to be transmitted in a certain range. You can control the multicast forwarding range by setting a minimum TTL value for multicast packets or a multicast forwarding boundary.
Multicast data for each multicast group on a network needs to be transmitted in a specific range. The NetEngine 8000 F supports the following methods for controlling multicast forwarding range:
Configure a multicast forwarding boundary on an interface to form a closed multicast forwarding area. After an interface is configured with a forwarding boundary for a specific group, the interface does not forward or receive any multicast packet for this group.
Set a minimum TTL value for multicast packets to restrict the transmission distance of multicast packets. The interface forwards only the multicast packets with the TTL value being greater than or equal to the minimum TTL value. If the TTL value of a packet is smaller than the minimum TTL value, the interface discards the packet.