Providing wavelength connectivity information to a network

摘要

In particular embodiments, providing wavelength connectivity information to a network includes establishing wavelength connectivity information for a network node of the network. The network node comprises link pairs, where a link pair has an input link and an output link. The wavelength connectivity information describes a set of available wavelengths between an input link and an output link. The wavelength connectivity information is inserted into an advertisement, and the advertisement is sent to at least a subset of the network nodes of the network in real time.

主权项

1. A method comprising:
establishing wavelength connectivity information for a network node of a plurality of network nodes of a network, the network node comprising a plurality of link pairs, a link pair comprising an input link and an output link, the wavelength connectivity information describing wavelength availability between the input link and the output link of at least a subset of the link pairs, the wavelength connectivity information comprising one or more allowed incoming wavelengths on the input link, one or more allowed outgoing wavelengths on the output link, and a signal type, wherein the signal type comprises whether a wavelength of a signal between the input link and the output link is regenerated, whether a wavelength of the signal is converted, and/or whether a wavelength of the signal can be added or dropped; inserting the wavelength connectivity information into an advertisement; and sending the advertisement to at least a subset of the network nodes of the network in real time.