Protocol independent multicast (PIM) snooping for a shortest path bridging multicast (SPBM) network
OwnerSrikanth Keesara, David Johnson, Jr. +1inventors
InventorsSrikanth Keesara, David Johnson, Jr., Julie Alma Carleton
Life of this patent
Estimating the term…
Abstract
A method and apparatus for providing Protocol-Independent Multicast (PIM) snooping for a Shortest Path Bridging Multicast (SPBM) Network is presented. An ingress Backbone Edge Bridge (BEB) device of a Shortest Path Bridging (SPB) network having at least one egress BEB coupled to at least one PIM network performs the following operations. The egress BEB, snoops join and prune messages for a multicast stream in the SPB network. A multicast tree is built in the SPB network for the multicast stream in accordance with the join and prune messages. The multicast stream is forwarded through the SPB network in accordance with the multicast tree.
Claims20
A computer-implemented method in which a Shortest Path Bridging (SPB) network having an ingress Backbone Edge Bridge (BEB), configured with a Layer 2 Virtual Services Network (L2VSN) enabled, and at least one egress BEB coupled to at least one Protocol Independent Multicast (PIM) network, the at least one egress BEB configured with the L2VSN enabled, comprising:
- snooping, by said egress BEB, PIM join and prune messages for a multicast stream in the L2VSN in said SPB network;
- building a multicast tree in said SPB network for said multicast stream in accordance with said PIM join and prune messages;
- and
- forwarding, by the ingress BEB, said multicast steam through the L2VSN in said SPB network in accordance with said multicast tree.
A non-transitory computer readable storage medium having computer readable code thereon for Protocol Independent Multicast (PIM) snooping for a Short Path Bridge (SPB) network that includes an ingress Backbone Edge Bridge (BEB), configured with a Layer 2 Virtual Services Network (L2VSN) enabled, and at least one egress BEB coupled to at least one Protocol Independent Multicast (PIM) network, the at least one egress BEB configured with the L2VSN enabled, the medium including instructions in which a computer system performs operations comprising:
- snooping, by said egress BEB, PIM join and prune messages for a multicast stream in the L2VSN in said SPB network;
- building a multicast tree in said SPB network for said multicast stream in accordance with said PIM join and prune messages;
- and
- forwarding, by the ingress BED, said multicast steam through the L2VSN in said SPB network in accordance with said multicast tree.
A computer system comprising:
- an ingress Backbone Edge Bridge (BEB), configured with a Layer 2 Virtual Services Network (L2VSN) enabled;
- an egress BEB bridge, configured with the Layer 2 Virtual Services Network (L2VSN) enabled;
- a Shortest Path Bridge (SPB) network comprising the ingress BEB and the egress BEB, wherein the egress BEB is coupled with a Protocol Independent Multicast (PIM) network and snoops PIM join messages and PIM prune messages for a multicast stream in the L2VSN in the SPB network;
- and
- wherein the ingress BEB comprises:
- a memory;
- a processor;
- a communications interface;
- an interconnection mechanism coupling the memory, the processor and the communications interface;
- and
- wherein the memory is encoded with an application that when performed on the processor, causes the processor to perform the operations of:
- building a multicast tree in said SPB network for said multicast stream in accordance with said PIM join and prune messages;
- and
- forwarding said multicast stream through the L2VSN in said SPB network in accordance with said multicast tree.
Dependencies are inferred from the claim text.