Multi-protocol bridge

• US 20060004935A1
• Filed: 06/30/2004
• Published: 01/05/2006
• Est. Priority Date: 06/30/2004
• Status: Abandoned Application

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Seto, Pak-Lung, Skirvin, Jeffrey D.
• Application Number:
  US10/881,657
• Publication Number:
  US 20060004935A1
• Time in Patent Office: Days
• US Class Current: 710/62
• CPC Class Codes: G06F 13/4027 using bus bridges G06F13/4022 takes precedence

Abstract

A method according to one embodiment may include receiving a first portion of data compliant with a first communication protocol via a first communication link, converting the first portion of data into a second portion of data compliant with a second communication protocol for communication on a second communication link, receiving a third portion of data the compliant with the first communication protocol via the first communication link, and converting the third portion of data into a fourth portion of data compliant with a third communication protocol for communication on a third communication link. Of course, many alternatives, variations, and modifications are possible without departing from this embodiment.

Claims

1. An apparatus comprising:

a plurality of ports capable of being coupled to a plurality of devices via an associated plurality of communication links; and

circuitry capable of receiving information from a first communication link compliant with a first communication protocol and converting said information for communication on a second communication link compliant with a second communication protocol, said circuitry also capable of receiving said information from said first communication link compliant with said first communication protocol and converting said information for communication on a third communication link compliant with a third communication protocol.

2. The apparatus of claim 1, wherein said first communication protocol comprises a Serial Attached Small Computer Systems Interface (SAS) protocol and said second communication protocol comprises a Fibre Channel (FC) protocol.

3. The apparatus of claim 2, wherein said third communication protocol comprises an Ethernet protocol.

4. The apparatus of claim 1, wherein said first communication protocol comprises a Serial Attached Small Computer Systems Interface (SAS) protocol and said second communication protocol comprises a Parallel Small Computer System Interface (Parallel SCSI) protocol.

5. The apparatus of claim 4, wherein said circuitry presents each external device coupled to a Parallel bus for communication compatible with said Parallel SCSI protocol as a Serial Small Computer System Interface Protocol (SSP) device to at least one device compatible with said SAS protocol.

6. A system comprising:

at least one initiator device;

a first target device;

a second target device; and

a bridge comprising a port coupled to said at least one initiator device via a first communication link, a port coupled to said first target device via a second communication link, a port coupled to said second target device via a third communication link, and circuitry capable of receiving information from said first communication link compliant with a first communication protocol and converting said information for communication on said second communication link compliant with a second communication protocol to facilitate communication between said at least one initiator device and said first target device, said circuitry also capable of receiving said information from said first communication link compliant with said first communication protocol and converting said information for communication on said third communication link compliant with a third communication protocol to facilitate communication between said at least one initiator device and said second target device.

7. The system of claim 6, wherein said at least one initiator device comprises a circuit card and a bus, said circuit card capable of being coupled to said bus, said circuit card capable of communicating said information via said first communication link compliant with said first communication protocol to said bridge.

8. The system of claim 6, wherein said first communication protocol comprises a Serial Attached Small Computer Systems Interface (SAS) protocol and said second communication protocol comprises a Fibre Channel (FC) protocol.

9. The system of claim 8, wherein said third communication protocol comprises an Ethernet protocol.

10. The system of claim 6, wherein said first communication protocol comprises a Serial Attached Small Computer Systems Interface (SAS) protocol and said second communication protocol comprises a Parallel Small Computer System Interface (Parallel SCSI) protocol.

11. The system of claim 10, wherein said circuitry presents said first target device as a Serial Small Computer System Interface Protocol (SSP) device to said at least one initiator.

12. A method comprising:

receiving a first portion of data compliant with a first communication protocol via a first communication link;

converting said first portion of data into a second portion of data compliant with a second communication protocol for communication on a second communication link;

receiving a third portion of data compliant with said first communication protocol via said first communication link; and

converting said third portion of data into a fourth portion of data compliant with a third communication protocol for communication on a third communication link.

13. The method of claim 12, wherein said first communication protocol comprises a Serial Attached Small Computer Systems Interface (SAS) protocol and said second communication protocol comprises a Fibre Channel (FC) protocol.

14. The method of claim 13, wherein said third communication protocol comprises an Ethernet protocol.

15. The method of claim 12, wherein said first communication protocol comprises a Serial Attached Small Computer Systems Interface (SAS) protocol and said second communication protocol comprises a Parallel Small Computer System Interface (Parallel SCSI) protocol.

16. The method of claim 15, further comprising presenting each external device coupled to a Parallel bus for communication compatible with said Parallel SCSI protocol as a Serial Small Computer System Interface Protocol (SSP) device.

17. An article comprising:

a machine readable medium having stored thereon instructions that when executed by a machine result in the machine performing operations comprising;

receiving a first portion of data compliant with a first communication protocol via a first communication link;

converting said first portion of data into a second portion of data compliant with a second communication protocol for communication on a second communication link;

receiving a third portion of data compliant with said first communication protocol via said first communication link; and

converting said third portion of data into a fourth portion of data compliant with a third communication protocol for communication on a third communication link.

18. The article of claim 17, wherein said first communication protocol comprises a Serial Attached-Small Computer Systems Interface (SAS) protocol and said second communication protocol comprises a Fibre Channel (FC) protocol.

19. The article of claim 18, wherein said third communication protocol comprises an Ethernet protocol.

20. The article of claim 17, wherein said first communication protocol comprises a Serial Attached Small Computer Systems Interface (SAS) protocol and said second communication protocol comprises a Parallel Small Computer System Interface (Parallel SCSI) protocol.

21. The article of claim 20, wherein said operations further comprise presenting each external device coupled to a Parallel bus for communication compatible with said Parallel SCSI protocol as a Serial Small Computer System Interface Protocol (SSP) device.