SCALABLE HYBRID PACKET/CIRCUIT SWITCHING NETWORK ARCHITECTURE

• US 20150181317A1
• Filed: 12/11/2014
• Published: 06/25/2015
• Est. Priority Date: 12/24/2013
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Laboratories America Inc (NEC Corporation)
• Inventors: Kanonakis, Konstantinos, Patel, Ankitkumar, Ji, Philip, Hu, Junqiang, Yin, Yawei
• Granted Patent: US 9,654,852 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04J 14/0204 Broadcast and select arrangements, e.g. with an optical splitter at the input before adding or dropping
• CPC Class Codes: H04J 14/0205 Select and combine arrangements, e.g. with an optical combiner at the output after adding or dropping
• CPC Class Codes: H04J 14/0212 using optical switches or wavelength selective switches [WSS]
• CPC Class Codes: H04J 14/0217 Multi-degree architectures, e.g. having a connection degree greater than two
• CPC Class Codes: H04J 14/0227 Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
• CPC Class Codes: H04J 14/0283 WDM ring architectures
• CPC Class Codes: H04J 14/0286 WDM hierarchical architectures
• CPC Class Codes: H04L 49/356 for storage area networks
• CPC Class Codes: H04L 49/45 Arrangements for providing or supporting expansion
• CPC Class Codes: H04Q 11/00 Selecting arrangements for multiplex systems multiplex systems H04J
• CPC Class Codes: H04Q 11/0062 Network aspects
• CPC Class Codes: H04Q 2011/0092 Ring

Abstract

Systems and methods for packet switching in a network, including two or more hybrid packet/circuit switching network architectures configured to connect two or more core level switches in the network architectures, the network architectures being controlled and managed using a centralized software defined network (SDN) control plane. An optical ring network may be configured to interconnect the two or more hybrid network architectures, and one or more hybrid electrical/optical packet/circuit switches configured to perform switching and traffic aggregation. One or more high-speed optical interfaces and one or more low-speed electrical/optical interfaces may be configured to transmit data.

Claims

1. A system for packet switching in a network, comprising:

two or more hybrid packet/circuit switching network architectures configured to connect two or more core level switches in the network architectures, the network architectures being controlled and managed using a centralized software defined network (SDN) control plane;

an optical ring network configured to interconnect the two or more hybrid network architectures;

one or more hybrid electrical/optical packet/circuit switches configured to perform switching and traffic aggregation; and

one or more high-speed optical interfaces and one or more low-speed electrical/optical interfaces configured to transmit data.

2. The system as recited in claim 1, wherein the hybrid network includes Fat-Tree and Torus network architectures.

3. The system as recited in claim 1, wherein the core level switches in the network architectures are connected using a Torus topology.

4. The system as recited in claim 1, wherein the hybrid switches include hybrid electrical/optical switching fabric, and the two fabric types are connected by a predetermined number of Optical/Electrical/Optical (O/E/O) interfaces,

wherein the electrical switching fabric provides fast, packet granularity switching and/or aggregation capabilities and the optical switching fabric provides slower, circuit granularity switching and/or optical traffic grooming capabilities;

and

wherein interfaces between the electrical and optical switching fabrics enable conversion capabilities between the electrical (packet) domain and the optical (circuit) domain.

5. The system as recited in claim 1, wherein the hybrid switches are employed for rack to rack communications in the hybrid network.

6. The system as recited in claim 1, wherein scalability of the optical ring network is extended by employing sophisticated network topologies including 2D, 3D, or 4D Torus network topologies.

7. The system as recited in claim 1, further comprising switching facilities wherein legacy servers may be upgraded to super servers with no architectural upgrades to the switching facilities.

8. The system as recited in claim 1, wherein the software defined network (SDN) control plane includes one or more SDN controllers, and one or more SDN orchestrators.

9. The system as recited in claim 8, wherein the one or more SDN controllers are configured to control underlying active components, and the one or more SDN orchestrators are configured to orchestrate the one or more SDN controllers and determine network topology and resource information.

10. A method for packet switching in a network, comprising:

connecting two or more core level switches in the network architectures using two or more hybrid packet/circuit switching network architectures, the network architectures being controlled and managed using a centralized software defined network (SDN) control plane;

interconnecting the two or more hybrid network architectures using an optical ring network;

performing switching and traffic aggregation using one or more hybrid electrical/optical packet/circuit switches; and

transmitting data using one or more high-speed optical interfaces and one or more low-speed electrical/optical interfaces.

11. The method as recited in claim 10, wherein the hybrid network includes Fat-Tree and Torus network architectures.

12. The method as recited in claim 10, wherein the core level switches in the network architectures are connected using a Torus topology.

13. The method as recited in claim 10, wherein the hybrid switches include hybrid electrical/optical switching fabric, and the two fabric types are connected by a predetermined number of Optical/Electrical/Optical (O/E/O) interfaces,

wherein the electrical switching fabric provides fast, packet granularity switching and/or aggregation capabilities and the optical switching fabric provides slower, circuit granularity switching and/or optical traffic grooming capabilities;

and

wherein interfaces between the electrical and optical switching fabrics enable conversion capabilities between the electrical (packet) domain and the optical (circuit) domain.

14. The method as recited in claim 10, wherein the hybrid switches are employed for rack to rack communications in the hybrid network.

15. The method as recited in claim 10, wherein scalability of the optical ring network is extended by employing sophisticated network topologies including 2D, 3D, or 4D Torus network topologies.

16. The method as recited in claim 10, further comprising switching facilities wherein legacy servers may be upgraded to super servers with no architectural upgrades to the switching facilities.

17. The method as recited in claim 10, wherein the software defined network (SDN) control plane includes one or more SDN controllers, and one or more SDN orchestrators.

18. The method as recited in claim 17, wherein the one or more SDN controllers are configured to control underlying active components, and the one or more SDN orchestrators are configured to orchestrate the one or more SDN controllers and determine network topology and resource information.