Ingress switch multicast distribution in a fabric switch
First Claim
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1. A switch, comprising:
- an inter-switch multicast module configured to identify, for a first copy of a multicast packet belonging to a multicast group, an egress inter-switch port in a multicast tree rooted at the switch, wherein the multicast tree is identified in a network of interconnected switches by a switch identifier of the switch; and
an edge multicast module configured to identify an egress edge port for a second copy of the multicast packet based on a multicast replication identifier of the switch, wherein the multicast replication identifier is distinct from an identifier of the multicast group and local within the switch, and wherein the multicast replication identifier is not included in a packet.
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Abstract
One embodiment of the present invention provides a switch. The switch includes an inter-switch multicast module and an edge multicast module. The inter-switch multicast module identifies for a first replication of a multicast packet an egress inter-switch port in a multicast tree rooted at the switch. The multicast tree is identified by an identifier of the switch. The edge multicast module identifies an egress edge port for a second replication of the multicast packet based on a multicast group identifier. The multicast group identifier is local within the switch.
417 Citations
25 Claims
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1. A switch, comprising:
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an inter-switch multicast module configured to identify, for a first copy of a multicast packet belonging to a multicast group, an egress inter-switch port in a multicast tree rooted at the switch, wherein the multicast tree is identified in a network of interconnected switches by a switch identifier of the switch; and an edge multicast module configured to identify an egress edge port for a second copy of the multicast packet based on a multicast replication identifier of the switch, wherein the multicast replication identifier is distinct from an identifier of the multicast group and local within the switch, and wherein the multicast replication identifier is not included in a packet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A computer-executable method, comprising:
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identifying, for a first copy of a multicast packet belonging to a multicast group, an egress inter-switch port of a switch in a multicast tree rooted at the switch, wherein the multicast tree is identified in a network of interconnected switches by a switch identifier of the switch; and identifying an egress edge port for a second copy of the multicast packet based on a multicast replication identifier of the switch, wherein the multicast replication identifier is distinct from an identifier of the multicast group and local within the switch, and wherein the multicast replication identifier is not included in a packet. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A computing system, comprising:
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a processor; and a computer-readable storage medium storing instructions which when executed by the processor cause the processor to perform a method, the method comprising; identifying, for a first copy of a multicast packet belonging to a multicast group, an egress inter-switch port of a switch in a multicast tree rooted at the switch, wherein the multicast tree is identified by a switch identifier of the switch in a network of interconnected switches; and identifying an egress edge port for a second copy of the multicast packet based on a multicast replication identifier, wherein the multicast replication identifier is local within the switch. - View Dependent Claims (22, 23, 24, 25)
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Specification