Method and apparatus for processing a multicast packet

摘要

The embodiments of the present invention relate to the field of computer networks, and disclose a method and an apparatus for processing a multicast packet. The method includes receiving a multicast packet, acquiring a local router interface corresponding to the multicast packet according to a multicast routing entry carried in the multicast packet, and forwarding the multicast packet through the acquired local router interface to a clustered routing system interface for further transfer. The embodiments of the present invention can cluster several routing devices into a virtual routing system which externally acts as a single routing node for supporting a multicast service, so as to implement the efficient and reliable forwarding of the multicast packet in a clustered routing system with virtual aggregation, and enable the clustered routing system to support the multicast service with high efficiency and quality.

主权项

1. A method for processing a multicast packet, the method comprising:
combining multicast routing entries having a same clustered routing system interface, allocating a corresponding internal shared tree identity, and saving mapping between a multicast routing entry and the internal shared tree identity; establishing mapping between the internal shared tree identity and a local router interface in a clustered routing system according to the mapping between the multicast routing entry and the internal shared tree identity, mapping between the multicast routing entry and the clustered routing system interface, and mapping between the clustered routing system interface and the local router interface in the clustered routing system, and saving the mapping between the internal shared tree identity and the local router interface in an internal multicast forwarding information base of each local router; receiving a multicast packet; acquiring the local router interface corresponding to the multicast packet according to the multicast routing entry carried in the multicast packet; and forwarding the multicast packet through the acquired local router interface to the clustered routing system interface for further transfer.