Method and system for path protection in a communications network
3 Assignments
0 Petitions
Accused Products
Abstract
Restoration of a failed link on a network is achieved by reserving a portion of the transmission bandwidth for at least some of the links connecting nodes of the network. The reserved portion of the transmission bandwidth is used for the transmission of traffic diverted from a failed link to provide a restoration path for that diverted traffic thereby enabling a protection path to be determined dynamically. The reserved portion is preferably configured in a block so that contiguous concatenated payloads can be transmitted across the protection bandwidth.
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Citations
44 Claims
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1-22. -22. (Canceled)
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23. A communications network, comprising:
- a plurality of nodes; and
a plurality of links for connecting the nodes, each link having a transmission bandwidth, a portion of the transmission bandwidth of at least some of the links being reserved for transmission of traffic diverted from a failed link to provide a restoration path for that diverted traffic. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
- a plurality of nodes; and
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34. A link for a communications network for transmitting data between two nodes on the network, the link comprising:
- a transmission bandwidth having a portion reserved for transmission of traffic diverted from a failed link to provide a restoration path for that diverted traffic.
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35. A method of restoring a failed link between two nodes on a communications network in which a plurality of nodes is connected by a plurality of links, the links having a transmission bandwidth for transmitting traffic over the network, the method comprising the steps of:
- reserving a portion of the transmission bandwidth of at least some of the links for transmission of diverted traffic from the failed link, thereby providing a restoration path between the two nodes for the diverted traffic.
- View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44)
Specification