Method for switching master/slave timing in a 1000Base-T link without traffic disruption

USRE48130E1 · kind E1 · reissue

Assignee

• Microsemi Storage Solutions Ltd. · US

Inventors

• James D. Barnette · Austin, US
• Mandeep Singh Chadha · Austin, US
• James A. McIntosh · Hutto, US

Key dates

• Filing date: Dec 12, 2016
• Grant date: Jul 28, 2020
• Expiry date: Dec 12, 2036

Classification

• Technology area (CPC —): General

Abstract

A method switches master/slave timing in a communication network without traffic disruption. The method includes a master device informing a slave of timing loss. The master device additionally begins transmitting with timing from a local reference clock and begins receive timing recovery. The slave freezes its receive timing recovery and locks its transmit clock. The master device transitions its transmit timing to use the recovered receive clock. The slave gradually switches to transmitting using its local clock signal. The method may be used in synchronous Ethernet networks.