H3C Technologies H3C S7500E Series Switches - Manual (Page 32)

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Multi-Instance Application in Multicast
With multi-instance multicast enabled, a PE is able to:
z Maintain a set of independent multicast forwarding mechanism for each instance, include
various multicast protocols, a list of PIM neighbors and a multicast routing table per instance.
Each instance searches its own forwarding table or routing table to forward multicast data.
z Guarantee the isolation between different VPN instances.
z Implement information exchange and data conversion between the public instance and VPN
instances.
z Only one set of unified multicast service runs on a non-PE device. It is called public instance.
z The configuration made in VPN instance view only takes effect on the VPN instance interface
only. An interface that does not belong to any VPN instance is called public instance interface.