Optical network automatic protection switching
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United States of America Patent
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Apr 15, 2014
Grant Date -
Aug 2, 2012
app pub date -
Jan 31, 2011
filing date -
Jan 31, 2011
priority date (Note) -
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Abstract
There is described an optical terminal for use in a passive optical network. The optical terminal comprises an optical I/O module for sending and receiving optical data packets along an optical fiber, an electrical I/O module for sending and receiving electrical data packets via an electrical connection, a signal converter operatively connected to the optical and electrical I/O modules for converting the data packets between optical and electrical formats, a controller for controlling the operation of the I/O modules and the signal converter. The controller is configured to detect a failure of a primary data path in the optical network, initiate an automatic protection switch to a secondary data path for optical data packets, and generate traffic flow update messages to be sent upstream. Each traffic flow update message contains, as a source address, a MAC address of a client device downstream of the terminal.
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