Method and system for determination and exchange of network timing information
First Claim
Patent Images
1. A method comprising:
- identifying, at a receiving node, a plurality of time stamps included in a time stamp packet sent from a sending node;
determining, at the receiving node, a propagation delay of a network physical link between the receiving node and an originating node based on at least one time stamp among the plurality of time stamps, the propagation delay corresponding to a data packet that traversed along the network physical link across a plurality of network nodes;
determining, based on the determined propagation delay, a length of the network physical link; and
appending, to the data packet, information indicating the length of the network physical link.
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Abstract
Aspects of methods and systems for determination and exchange of network timing information are provided. In one such method, a propagation delay of a network physical link is determined using a plurality of time stamps. The time stamps are provided by one or more sending nodes traversed by a packet along the network physical link. The length of the network physical link is calculated, utilizing the determined propagation delay. The determined propagation delay and/or the length of the network physical link is appended to the packet.
23 Citations
20 Claims
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1. A method comprising:
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identifying, at a receiving node, a plurality of time stamps included in a time stamp packet sent from a sending node; determining, at the receiving node, a propagation delay of a network physical link between the receiving node and an originating node based on at least one time stamp among the plurality of time stamps, the propagation delay corresponding to a data packet that traversed along the network physical link across a plurality of network nodes; determining, based on the determined propagation delay, a length of the network physical link; and appending, to the data packet, information indicating the length of the network physical link. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A non-transitory machine-readable storage having stored thereon, a computer program having at least one code section for networking, the at least one code section being executable by a machine for causing the machine to:
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determine a propagation delay of a network hop using a time stamp included in a first packet, the propagation delay corresponding to a second packet that traversed along a network physical link; and append, to a second packet, a hop length calculated based on the determined propagation delay. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A system comprising processing circuitry operable to:
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determine a propagation delay of an ingress packet using at least one time stamp among a plurality of time stamps included in a time stamp packet, wherein the ingress packet traversed along the network physical link and the plurality of time stamps included in the time stamp packet record a traversal of a plurality of network nodes by the ingress packet; and append, to an egress packet, a hop length determined based on the determined propagation delay. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification