1
David Bianchi, Giovanni Tandi, Gilberto Loprieno: Smart mechanism for multi-client bidirectional optical channel protection scheme. Cisco Technology, March 1, 2011: US07898944 (2 worldwide citation)

Methods and apparatus for efficiently allowing protection switch information to be communicated on bidirectional lines are disclosed. According to one aspect of the present invention, a method for communicating protection switch information from a first network element to a second network element ac ...


2
Maurizio Gazzola, Emanuela Grandi, David Bianchi, Stefano Binetti, Luca Della Chiesa: Automatic selection of the performance monitoring based on client type. Cisco Technology, July 6, 2010: US07751726 (2 worldwide citation)

Systems and methods for operating transponders that automatically accommodate multiple received signal types. The different signal types may include different clients such as, e.g., SONET/SDH, G.709, 10 Gigabit Ethernet, etc. as well as different data rates. A transponder can automatically detect th ...


3
David Bianchi, Anand Girish Parthasarathy, Ya Xu: Response to OTUk-BDI for OTN interfaces to restore bidirectional communications. Cisco Technology, March 4, 2014: US08666242 (2 worldwide citation)

In an OTN (Optical Transport Network), an OTN interface of a network element may receive a BDI (Backwards Defect Indicator) signal from a far end network element to which OTN frames are being transmitted. A BDI signal indicates the occurrence of a unidirectional failure in the transmission of OTN fr ...


4
Stefano Binetti, Maruizio Gazzola, David Bianchi: Unidirectional drop and continue using bidirectional transponder. Cisco Technology, August 17, 2010: US07778549 (1 worldwide citation)

Systems and methods for unidirectional communication in an optical network employing bidirectional transponders are provided. The modulation and amplification capabilities of the bidirectional transponder are used to forward information to the next node. In this way a highly cost-effective “drop and ...


5
Gilberto Loprieno, David Bianchi, Giacomo Losio: Pointer offset mechanism enabling cost effective SONET/SDH mapping/demapping over ethernet. Cisco Technology, Charles E Krueger, April 3, 2012: US08149871 (1 worldwide citation)

In one embodiment, a SONET/SDH over Ethernet demapping point utilizes a pointer offset mechanism for clock recovery and timing. The pointer offset is determined by the difference between a client clock and a reference clock.


6
Alberto Tanzi, Maurizio Gazzola, David Bianchi: Use of pre-validated paths in a WDM network. Cisco Technology, September 18, 2012: US08270831 (1 worldwide citation)

Various example embodiments are disclosed. According to an example embodiment, a method may include receiving a resource request for optical resources within a wavelength division multiplexed (WDM) optical network; comparing one or more parameters of the resource request to a list of pre-validated p ...


7
Maurizio Gazzola, David Bianchi, Giovanni Martinelli, Gabriele Maria Galimberti: Smart protection escalation mechanism prevention. Cisco Technology, Edell Shapiro & Finnan, October 25, 2011: US08045477 (1 worldwide citation)

Techniques are provided for detecting at a controller associated with a physical layer of a network an occurrence of a failure within the physical layer of the network. In response to detecting the failure, the controller sends messages to at least first and second nodes in a transport layer of the ...


8
David Bianchi, Giovanni Tandi, Gilberto Loprieno: Smart mechanism for multi-client bidirectional optical channel protection scheme. Cisco Technology, Edell Shapiro & Finnan, August 14, 2012: US08243619

Methods and apparatus for efficiently allowing protection switch information to be communicated on bidirectional lines are disclosed. According to one aspect of the present invention, a method for communicating protection switch information from a first network element to a second network element ac ...


9
Maurizio Gazzola, David Bianchi, Stefano Piciaccia, Gabriele Maria Galimberti: Adaptive hybrid optical control plane determination of lightpaths in a DWDM network. Cisco Technology, Edell Shapiro & Finnan, October 23, 2012: US08295701

Techniques and a control architecture (apparatus and logic) are provided for an adaptive hybrid DWDM-aware computation scheme. The architecture is one that is a hybrid of a centralized control scheme and a distributed control scheme that performs adaptive physical impairment computations for an opti ...


10
Giovanni Martinelli, Moustafa Kattan, David Bianchi, Ornan Gerstel: Light path priority in dense wavelength division multiplexed networks. Cisco Technology, Edell Shapiro & Finnan, December 2, 2014: US08902758

Techniques are provided for using light path priority of service information in an optical network. At a node in the optical network, priority of service information is stored for a plurality of light paths used in the optical network. The node serves traffic in the optical network using the plurali ...