| 摘要 |
A network component comprising a forwarding physical layer (PHY) unit comprising a source queue (SQ), wherein the forwarding PHY unit is configured to measure a one-way physical layer delay between the forwarding PHY unit and a destination node. Also disclosed is a network component comprising a forwarding PHY unit configured to send a plurality of symbols at a network physical layer to a destination node and receive the symbols at a network physical layer from the destination node, and a SQ configured to queue the symbols returned from the destination node, wherein the forwarding PHY unit is further configured to process the queued symbols to calculate a half round-trip delay based on a virtual delay time.
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