Cisco Technology, Inc.

Loukas Paraschis

Ornan A Gerstel

Peter Lothberg

Anand Girish Parthasarathy

Gabriele Maria Galimberti

Humayun Sohel

A method and system for setting a variable forward error correction overhead in an optical transport network frame for an optical link at a node are disclosed. In one embodiment, a method includes selecting a forward error correction overhead, signaling an optical node the selected forward error correction overhead, and setting the forward error correction overhead in the optical network transport frame for use in transmission of data over the optical link. In one embodiment, the forward error correction overhead is complementary to the data payload to maintain total transmission rate.

Variable forward error correction for optical communication links

In one embodiment, an apparatus can include: (i) logic configured to detect an advanced warning indication, such as for a degraded signal condition, on a first link between first and second network devices, where the detection can utilize a number of corrected bits and forward error correction (FEC), for example; and (ii) logic configured to reroute packet traffic from the first link to a second link when the degraded signal condition is detected.

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Palo Alto, CA, United States of America

Loukas Paraschis