Simplified synchronized Ethernet implementation

摘要

A method of simplifying the implementation of Synchronous Ethernet on an Ethernet device having a first port and a second port device using a predetermined protocol and signaling, comprises delivering a master clock from a Synchronous Ethernet system to the first port of the Ethernet device; transmitting the delivered master clock to the second port of the Ethernet device independently of the protocol and signaling of the Ethernet device; and transmitting the master clock from the second port of the Ethernet device to a downstream device that supports Synchronous Ethernet. In one implementation, the Ethernet device has a local clock, and the method synchronizes the local clock to the master clock. In another implementation, the Ethernet device does not have a local clock, and the master clock is transmitted from the second port of the Ethernet device to the downstream device without any synchronizing operation at the Ethernet device.

主权项

1. A method to simplify the implementation of Synchronous Ethernet on an Ethernet device having a first port and a second port using a predetermined protocol and signaling, said method comprising:
when a master clock is delivered from a Synchronous Ethernet system to the first port of said Ethernet device:
transmitting the delivered master clock to the second port of said Ethernet device independently of the protocol and signaling of said Ethernet device, andtransmitting said master clock from said second port of said Ethernet device to a downstream device that supports Synchronous Ethernet; and when the master clock is delivered from the Synchronous Ethernet system to the second port of said Ethernet device:
transmitting the delivered master clock to the first port of said Ethernet device independently of the protocol and signaling of said Ethernet device, andtransmitting said master clock from said first port of said Ethernet device to a downstream device that supports Synchronous Ethernet.