Patent ID: 9054967
Filing Date: 2015-06-09
Classification: H04L

Abstract:
1. A method comprising: receiving a packet at a first network device for transport within a network domain that comprises a plurality of network devices, wherein the plurality of network devices have a common time reference, and wherein the first network device is at an ingress edge of the network domain for the packet; generating, by the first network device, timestamp information indicating time of arrival of the packet at the first network device; inserting into the packet a tag that comprises at least a first subfield and a second subfield, the first subfield comprising a type indicator to signify to other network devices in the network domain that the tag includes timestamp information data, and the second subfield includes the timestamp information; inserting in the tag a third subfield that contains information to indicate precision of the time stamp information; and sending the packet from the first network device to another network device in the network domain.