Fujitsu Corporation

Alcatel

Edwin Jay Burger

Robert S Gammenthaler, Jr

Maitreya Mukhopadhyay

Ignacio A Linares

David W Terwilliger

Qiang Li

Sridevi Palacharla

A disaggregated network element of an optical transport network, addressable at a single IP address, includes an active management and control unit (MCU) communicatively coupled to a standby MCU by physical cables and multiple tributary units, each of which performs a function in a data plane that carries user traffic and is communicatively coupled to both MCUs by respective physical cables. The MCUs host respective copies of configuration information for the network element and synchronize the information between them. In response to a loss of communication between the MCUs, a tributary unit designated as a witness tributary unit is consulted to determine the status of the MCUs, after which actions are taken to provide control plane redundancy. In response to a failure of an MCU, a backup copy of the configuration information is stored on the witness tributary unit and subsequently synchronized with a copy stored on the remaining MCU.

Management and control plane redundancy in a disaggregated network element

A memory card cooperating with a network interface for receiving data entry and update signals from a database manager via a switch fabric and with a bus interface for outputting data on a system bus disposed in a system shelf, which shelf forms at least a portion of a telecommunications node having a distributed scalable database system. The memory card is operable to contain at least a portion of the distributed database in a high speed, high density memory block disposed thereon, which memory block is coupled to a network interface controller via a first memory interface and to a bus interface controller via a second memory interface. An arbiter is coupled to the first and second memory interfaces for arbitrating data input operations and data output operations with respect to the memory block.

Memory card and system for updating distributed memory

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Flower Mound, TX, United States of America

Edwin Jay Burger