Patent ID: 7120360
Filing Date: 2006-10-10
Classification: H04J

Abstract:
1. An optical access network, comprising: a first ring operable to communicate optical signals in a first direction and a second ring operable to communicate optical signals in a second, opposite direction; one or more access nodes coupled to each ring and operable to passively add and drop traffic to and from each ring in one or more wavelengths, wherein at least a first access node is operable to add traffic in at least a first wavelength of a first optical signal communicated on the first ring; a hub node coupled to each ring and also coupled to an optical core network, the hub node comprising one or more components configured to: the first access node comprising logic embodied on a computer-readable medium and operable to configure the first access node upon detection of an interruption of the traffic in the first wavelength on the first ring to add the traffic in a second wavelength of a second optical signal communicated on the second ring; and the hub node comprising logic embodied on a computer-readable medium and operable to configure the hub node upon detection of an interruption to: