Pseudowire status maintenance for static pseudowires
AssigneeCisco Technology, Inc.
InventorsLuca Martini, George Swallow
Life of this patent
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Abstract
In one embodiment, a method includes generating an aggregated pseudowire status message at a first network device in a Multi-Protocol Label Switching (MPLS) network, transmitting the aggregated pseudowire status message to a second network device on a Label Switched Path (LSP) extending between the first and second network devices in the MPLS network, and establishing at the first network device, an aggregated pseudowire status session with the second network device upon receiving a response to the aggregated pseudowire status message on the LSP. The aggregated pseudowire status message configured to verify a current status of pseudowires on the LSP. An apparatus is also disclosed.
Claims15
A method comprising:
- generating an aggregated pseudowire status message at a first network device in a Multi-Protocol Label Switching Transport Profile (MPLS-TP) network;
- transmitting said aggregated pseudowire status message to a second network device on a Label Switched Path (LSP) extending between the first and second network devices in the MPLS-TP network, said aggregated pseudowire status message configured to verify a current status of pseudowires on the LSP;
- establishing at the first network device, an aggregated pseudowire status session with the second network device upon receiving a response to said aggregated pseudowire status message on the LSP;
- and
- transmitting an individual pseudowire status message on each of the pseudowires on the LSP, when said response is not received at the first network device within a predefined interval.
An apparatus comprising:
- a processor for generating an aggregated pseudowire status message, transmitting said aggregated pseudowire status message on a Label Switched Path (LSP) in a Multi-Protocol Label Switching Transport Profile (MPLS-TP) network, establishing an aggregated pseudowire status session upon receiving a response to said aggregated pseudowire status message on the LSP, said aggregated pseudowire status message configured to verify a current status of pseudowires on the LSP, and
- transmitting an individual pseudowire status message on each of the pseudowires on the LSP, when said response is not received within a predefined interval;
- and
- memory for storing said current status of the pseudowires on the LSP.
A computer program product comprising logic encoded on one or more non-transitory computer readable media for execution and when executed by a processor operable to:
- generate an aggregated pseudowire status message at a first network device in a Multi-Protocol Label Switching Transport Profile (MPLS-TP) network;
- transmit said aggregated pseudowire status message to a second network device on a Label Switched Path (LSP) extending between the first and second network devices in the MPLS-TP network, said aggregated pseudowire status message configured to verify a current status of pseudowires on the LSP;
- establish at the first network device, an aggregated pseudowire status session with the second network device upon receiving a response to said aggregated pseudowire status message on the LSP;
- and
- transmit an individual pseudowire status message on each of the pseudowires on the LSP, when said response is not received at the first network device within a predefined interval.
Dependencies are inferred from the claim text.