Method and apparatus for fast switching between the standby multicast tree multicast tree from the primary

摘要

The network egress node of the multicast network, functions for switching between standby and primary multicast tree multicast tree is provided. And MPLS label second record including a MPLS label first record including tree identifier of the first multicast tree for the first, the tree identifier of the second multicast tree second network egress node, several primary I and a multicast record, including the standby tree identifier and a plurality of tree identifier. Wherein each of the parameters, the value of the parameter, MPLS label record shows the packet processing rules are applied to determine whether to discard or whether to accept the packet. When the parameters of the MPLS label record is set to a first value, a determination whether to discard or whether to accept the packet received via the multicast tree associated with the multicast record, a tree identifier in the MPLS Label Record is performed by comparing only the primary identifier of the tree. When the parameters of the MPLS label record, is set to a second value, a determination whether to discard or whether to accept the packet received via the multicast tree associated with the multicast, tree identifier in the MPLS Label Record is performed by comparing the identifier of the tree stand or records multicast primary tree identifier of the record.