Multicast traffic load balancing over virtual link aggregation
First Claim
1. A switch, comprising:
- one or more ports;
link management circuitry configured to operate a port of the one or more ports of the switch in conjunction with a remote switch to form a virtual link aggregation; and
load balancing circuitry configured to;
generate an index of a data structure based on address information of a multicast group associated with the virtual link aggregation, wherein the data structure comprises a plurality of elements and indicates bandwidth distribution among links participating in the virtual link aggregation,wherein a respective element of the data structure corresponds to a switch participating in the virtual link aggregation; and
wherein a number of elements in the data structure indicates a bandwidth distribution or a number of links in the virtual link aggregation;
in response to the index indicating that an element of the data structure corresponds to the switch,designate the switch as a primary switch for the multicast group,wherein the primary switch is responsible for forwarding multicast data of the multicast group via the virtual link aggregation.
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Abstract
One embodiment of the present invention provides a switch. The switch comprises one or more ports, a link management module and a load balancing module. The link management module operates a port of the one or more ports of the switch in conjunction with a remote switch to form a virtual link aggregation. The load balancing module generates an index of a weight distribution vector based on address information of a multicast group associated with the virtual link aggregation. A slot of the weight distribution vector corresponds to a respective switch participating in the virtual link aggregation. In response to the index indicating a slot corresponding to the switch, the load balancing module designates the switch as primary switch for the multicast group, which is responsible for forwarding multicast data of the multicast group via the virtual link aggregation.
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Citations
14 Claims
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1. A switch, comprising:
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one or more ports; link management circuitry configured to operate a port of the one or more ports of the switch in conjunction with a remote switch to form a virtual link aggregation; and load balancing circuitry configured to; generate an index of a data structure based on address information of a multicast group associated with the virtual link aggregation, wherein the data structure comprises a plurality of elements and indicates bandwidth distribution among links participating in the virtual link aggregation, wherein a respective element of the data structure corresponds to a switch participating in the virtual link aggregation; and wherein a number of elements in the data structure indicates a bandwidth distribution or a number of links in the virtual link aggregation; in response to the index indicating that an element of the data structure corresponds to the switch, designate the switch as a primary switch for the multicast group, wherein the primary switch is responsible for forwarding multicast data of the multicast group via the virtual link aggregation. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method, comprising:
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operating a port of a switch in conjunction with a remote switch to form a virtual link aggregation; generating an index of a data structure based on address information of a multicast group associated with the virtual link aggregation, wherein the data structure comprises a plurality of elements and indicates bandwidth distribution among links participating in the virtual link aggregation, and wherein a respective element of the data structure corresponds to a switch participating in the virtual link aggregation; and wherein a number of elements in the data structure indicates a bandwidth distribution or a number of links in the virtual link aggregation; and in response to the index indicating that an element of the data structure corresponds to the switch, designating the switch as a primary switch for the multicast group, wherein primary switch is responsible for forwarding multicast data of the multicast group via the virtual link aggregation. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification