Data center path switch with improved path interconnection architecture

• US 9,756,404 B2
• Filed: 07/02/2015
• Issued: 09/05/2017
• Est. Priority Date: 07/03/2014
• Status: Active Grant

• Current Assignee: Fiber Mountain, Inc. (Green Lambda Corp.)
• Original Assignee: Fiber Mountain, Inc. (Green Lambda Corp.)
• Inventors: Raza, Mohammad H., Stone, David G., Lorenzo, Aristito, Plante, Ronald M, Lagana, John R
• Primary Examiner(s): Bocure, Tesfaldet
• Application Number:
  US14/790,594
• Publication Number:
  US 20160007102A1
• Time in Patent Office: 796 Days
• Field of Search: None
• CPC Class Codes: H04L 49/1515 Non-blocking multistage, e.g. Clos
• CPC Class Codes: H04L 49/253 using establishment or release of connections between ports
• CPC Class Codes: H04L 49/356 for storage area networks
• CPC Class Codes: H04L 49/358 Infiniband Switches
• CPC Class Codes: H04Q 11/0005 Switch and router aspects
• CPC Class Codes: H04Q 2011/0039 Electrical control
• CPC Class Codes: H04Q 2011/005 Arbitration and scheduling
• CPC Class Codes: H04Q 2011/0056 Clos
• CPC Class Codes: H04Q 2011/0058 Crossbar; Matrix

Abstract

A data center path switch architecture permits path switching of the signal path of incoming signals to one or more output paths in real time without the need for manual intervention, and without delays associated with current data center network switches. In this architecture, a switching core capable of switching signals directly from the ingress of the switching core to alternate destination ports in real time, either under software or hardware control.

Claims

1. A data center path switch, comprising:

a set of ports, wherein each port within the set of ports is configured to receive data streams from an external medium, and to transmit data streams to an external medium;

a path interconnection unit having an ingress side with a set of paths equal to the number of ports in the set of ports connected between the set of ports and the ingress side of the path interconnection unit in a one-to-one arrangement, an egress side with a set of paths equal to the number of paths on the ingress side connected between the set of ports and the egress side of the path interconnection unit in a one-to-one arrangement, and an electrical based switching fabric that is configured to switch data streams on any one ingress side path to any one egress side path such that data streams received on any one of the set of ports and be transmitted on any one of the set of ports, wherein the set of ports for the ingress side is that same set of ports for the egress side; and

a control unit connected to the path interconnection unit configured to control the switching fabric to switch data streams from a path on the ingress side to a path on the egress side; and

wherein the latency of data streams switched from a receiving port to a transmitting port is less than 500 nsec.

2. The data center path switch according to claim 1, wherein the latency of data streams switched from a receiving port to a transmitting port is less than 10 nsec.

3. The data center path switch according to claim 1, wherein the set of ports and path interconnection unit are configured as a non-blocking path switch.

4. The data center path switch according to claim 1, wherein the path interconnection unit comprises a matrix of switches of sufficient size such that a data stream on the ingress side can be switched to any one of the paths on the egress side.

5. The data center path switch according to claim 1, wherein the switching fabric is configured to switch data streams on any one ingress side path to more than one egress side path.

6. The data center path switch according to claim 1, wherein a data stream from a receiving port comprised of one medium type is converted within the path switch such that such data stream is transmitted by a transmitting port of a different medium type.

7. The data center path switch according to claim 1, wherein a data stream from a receiving port comprised of an electrical medium type is converted within the path switch such that such data stream is transmitted by a transmitting port of an optical medium type.

8. The data center path switch according to claim 1, wherein a received data stream is at a first data rate is converted into a second data rate at the path interconnection unit.

9. The data center path switch according to claim 1, wherein each port in the set of ports includes a connector capable of connecting to the external medium.

10. The data center path switch according to claim 9, wherein at least one of the port connectors comprises a copper connector.

11. The data center path switch according to claim 9, wherein at least one of the port connectors comprises one of a simplex or duplex fiber connector.

12. The data center path switch according to claim 9, wherein at least one of the port connectors comprises a high density fiber connector.

13. The data center path switch according to claim 9, wherein at least one of the port connectors has one or more associated LEDs used for status and control information.

14. The data center path switch according to claim 1, wherein each port in the set of ports includes a transceiver.

15. The data center path switch according to claim 14, wherein the transceiver comprises a pluggable transceiver in an SFF modular cage.

16. The data center path switch according to claim 14, wherein the transceiver comprises a WDM transceiver.

17. The data center path switch according to claim 1, wherein one or more of the ports in the set of ports comprise managed connectivity ports capable of reading a physical location identification from a managed connectivity port from an external medium connected to the one or more ports in the set of ports.

18. A data center path switch, comprising:

a set of ports in a one RU configuration having a capacity that is scalable from 16 ingress ports and 16 egress ports to at least 128 ingress ports and 128 egress ports, wherein each port within the set of ports is configured to receive data streams from an external medium, and to transmit data streams to an external medium;

a path interconnection unit having an ingress side with a set of paths equal to the number of ports in the set of ports connected between the set of ports and the ingress side of the path interconnection unit in a one-to-one arrangement, an egress side with a set of paths equal to the number of paths on the ingress side connected between the set of ports and the egress side of the path interconnection unit in a one-to-one arrangement, and an electrical based switching fabric that is configured to switch data streams on any one ingress side path to any one or more egress side paths such that data streams received on any one of the set of ports and be transmitted on any one of the set of ports, wherein the set of ports for the ingress side is that same set of ports for the egress side; and

a control unit connected to the path interconnection unit configured to control the switching fabric to switch data streams from a path on the ingress side to a path on the egress side.