Packet network linear protection systems and methods in a dual home or multi-home configuration
First Claim
1. A linear protection method in a dual home or multi-home network configuration with an end node communicatively coupled to a plurality of home nodes, the linear protection method comprising:
- operating a protection switch state machine based on a linear protection protocol at each of the plurality of home nodes and the end node, wherein the protection switch state machine is configured to support a plurality of linear protection protocols comprising the linear protection protocol;
synchronizing the protection switch state machines with one another;
implementing operations between the plurality of home nodes and the end node based on the protection switch state machines; and
responsive to a fault, updating the associated protection switch state machines without synchronizing over a link associated with the fault and performing protection switching.
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Abstract
A packet network linear protection method, a network, and a node in a dual or multi-home configuration include designating each of a plurality of home nodes in the dual or multi-home configuration as a working home or a protect home; designating each link between each of the plurality of home nodes and an end node in the dual or multi-home configuration as active or standby; operating a protection switch state machine based on an associated linear protection protocol at each of the plurality of home nodes and the end node; communicating protection messages to each of the plurality of home nodes from the end node; and communicating protection states in an associated protection switch state machine by each of the plurality of home nodes to other home nodes and to the end node.
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Citations
21 Claims
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1. A linear protection method in a dual home or multi-home network configuration with an end node communicatively coupled to a plurality of home nodes, the linear protection method comprising:
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operating a protection switch state machine based on a linear protection protocol at each of the plurality of home nodes and the end node, wherein the protection switch state machine is configured to support a plurality of linear protection protocols comprising the linear protection protocol; synchronizing the protection switch state machines with one another; implementing operations between the plurality of home nodes and the end node based on the protection switch state machines; and responsive to a fault, updating the associated protection switch state machines without synchronizing over a link associated with the fault and performing protection switching. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A network configured to implement linear protection in a dual home or multi-home network configuration, the network comprising:
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an end node communicatively coupled to a plurality of home nodes; wherein each of the end node and the plurality of home nodes are configured to implement a protection switch state machine based on a linear protection protocol, wherein the protection switch state machine is configured to support a plurality of linear protection protocols comprising the linear protection protocol, synchronize the protection switch state machines with one another, implement operations between one another based on the protection switch state machines, and responsive to a fault, update the associated protection switch state machines without synchronizing over a link associated with the fault and perform protection switching. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A linear protection method in a dual home or multi-home network configuration with an end node communicatively coupled to a plurality of home nodes, the linear protection method comprising:
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operating a protection switch state machine based on a linear protection protocol at each of the plurality of home nodes and the end node, wherein the protection switch state machine is configured to support a plurality of linear protection protocols comprising the linear protection protocol; synchronizing the protection switch state machines with one another; and implementing operations between the plurality of home nodes and the end node based on the protection switch state machines, wherein the protection switch state machines adapt states from Automatic Protection Switching (APS) in G.8031, IEEE 802.1ay, RFC 6718, and RFC 6377 into a common format with associated operations independent of the associated linear protection protocol. - View Dependent Claims (19, 20, 21)
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Specification