Method and system for site interconnection over a transport network
AssigneeHuawei Technologies Co., Ltd.
InventorPeter Ashwood-Smith
Life of this patent
Estimating the term…
Abstract
Methods and systems for managing traffic among a plurality of interconnected sites. The sites are interconnected via ring members and ring segments of a logical ring implemented by a network controller over a physical transport network. When it is determined there is a change in traffic that requires a change in ring topology, topology optimization is performed to accommodate the change in traffic. The topology optimization may include: dynamically increasing capacity of a ring segment, dynamically decreasing capacity of a ring segment, dynamically creating a traffic path, and/or dynamically removing a traffic path.
Claims21
A method of managing traffic among a plurality of interconnected sites, the sites being interconnected via ring members and ring segments of a logical ring implemented by a network controller over a physical transport network, the method comprising:
- receiving information about traffic in the logical ring;
- determining, in accordance with the received information, a need for a change in ring topology;
- in response to the determining, performing topology optimization to accommodate the change in traffic, the topology optimization including at least one of:
- increasing capacity of a ring segment, decreasing capacity of a ring segment, creating a traffic path, and removing an existing traffic path;
- and
- transmitting updated routing information to ring members, the routing information reflecting the change in ring topology.
A system for managing traffic among a plurality of interconnected sites, the system comprising:
- a transport software-defined networking (TSDN) controller configured to manage traffic over a transport network including the sites, the TSDN controller comprising a processor configured to execute instructions to cause the TSDN controller to:
- implement a logical ring over physical components of the transport network, the logical ring including ring members and ring segments, the sites being logically interconnected via the logical ring;
- receive information about traffic in the logical ring;
- determine, in accordance with the received information, a need for a change in ring topology;
- in response to the determining, perform topology optimization to accommodate the change in traffic, the topology optimization including at least one of:
- increasing capacity of a ring segment, decreasing capacity of a ring segment, creating a traffic path, and removing a traffic path;
- and
- transmit updated routing information to ring members, the routing information reflecting the change in ring topology.
A network comprising:
- a plurality of sites;
- a plurality of optical switches interconnecting the plurality of sites via physical links;
- and
- a transport software-defined networking (TSDN) controller managing the plurality of optical switches;
- the TSDN controller being configured to implement a logical ring over the optical switches and the physical links, the logical ring including ring members and ring segments not necessarily coincident with the optical switches and the physical links, the sites being logically interconnected via the logical ring.
Dependencies are inferred from the claim text.