Hitless modulation scheme change systems and methods in optical networks

摘要

A hitless modulation change method at a node in an optical network includes determining that a modulation change is warranted for an optical modem in the node, the optical modem configured to communicate over an optical link; determining an impact of the modulation change on the optical link and associated underlying connections thereon; causing changes in a data plane for the associated underlying connections, prior to performing the modulation change; and causing the modulation change subsequent to accommodating the associated underlying connections in the data plane, thereby minimizing interruptions of the associated underlying connections due to the modulation change.

主权项

1. A hitless modulation change method at a node in an optical network, the hitless modulation change method comprising:
determining that a modulation change from a first modulation scheme to a second modulation scheme is warranted for an optical modem in the node, the optical modem configured to communicate over an optical link; determining an impact of the modulation change on the optical link and associated underlying connections thereon comprising determining a length of time the modulation change will take based on a type of the modulation change and conditions on the optical link; causing changes in a data plane for the associated underlying connections, prior to performing the modulation change; and causing the modulation change subsequent to accommodating the associated underlying connections in the data plane, thereby minimizing interruptions of the associated underlying connections due to the modulation change.