Technique for implementing virtual fabric membership assignments for devices in a storage area network

• US 7,484,021 B2
• Filed: 01/12/2006
• Issued: 01/27/2009
• Est. Priority Date: 10/27/2005
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Chatterjee, Joy J, Janakiraman, Ramsundar, Ghosh, Kalyan, Ramaswamy, Badri, Rastogi, Gaurav
• Primary Examiner(s): Sorrell; Eron J
• Application Number:
  US11/332,747
• Publication Number:
  US 20070130295A1
• Time in Patent Office: 1,111 Days
• Field of Search: None
• US Class Current: 710/74
• CPC Class Codes: H04L 41/0803 Configuration setting
• CPC Class Codes: H04L 41/0816 the condition being an adaptation, e.g. in response to network events
• CPC Class Codes: H04L 41/0893 Assignment of logical groups to network elements
• CPC Class Codes: H04L 41/0894 Policy-based network configuration management
• CPC Class Codes: H04L 41/0895 Configuration of virtualised networks or elements, e.g. virtualised network function or OpenFlow elements
• CPC Class Codes: H04L 41/12 Discovery or management of network topologies
• CPC Class Codes: H04L 49/354 for supporting virtual local area networks [VLAN]
• CPC Class Codes: H04L 49/357 Fibre channel switches
• CPC Class Codes: H04L 67/1097 for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]

Abstract

A technique is provided for facilitating fabric membership login for an N_Port of a storage area network. A communication from a network node is received. The communication may include a portion of criteria associated with the N_Port. Using at least a portion of the portion of criteria, a virtual fabric identifier corresponding to a virtual fabric which is associated with the N_Port may be automatically identified. Fabric configuration information, which includes the virtual fabric identifier, may be automatically provided to the network node. A fabric login request from the N_Port to login to the virtual fabric may then be received. According to a specific embodiment, the communication may be transmitted from a network node to an F_Port on a Fiber Channel switch. When the N_Port received the fabric configuration information from the F_Port, the generating, using at least a portion of the received fabric configuration information, a fabric login request message may be generated by the N_Port which includes a fabric login request for the N_Port to login to the virtual fabric corresponding to the virtual fabric identifier. In at least one implementation, the N_Port and/or F_Port may be configured or designed to support trunking functionality.

Claims

1. A method of implementing dynamic virtual SAN (VSAN) configuration of at least one N_Port in a storage area network, the method comprising:

receiving a first fabric login request from a first N Port;

identifying a first portion of criteria from login information included in the first fabric login request; and

automatically and dynamically configuring a first VSAN association for the first N_Port based upon said first portion of criteria;

wherein the first portion of criteria includes information selected from a group consisting of;

PWWN information, node world wide name (NWWN) information, Fibre Channel address (FCID) information, Quality of Service (QoS) criteria, node ID information, Organization Unique Identifier (OUI) information, and vendor specific information.

2. The method of claim 1 wherein the method is implemented at a first Fibre Channel switch.

3. The method of claim 1 wherein the first portion of criteria includes a physical world wide name (PWWN) identifier associated with the first N_Port.

4. The method of claim 1 wherein the first N_Port corresponds to a virtual N_Port, and wherein the first portion of criteria includes a virtual PWWN identifier associated with the first N_Port.

5. The method of claim 1 wherein the first N_Port corresponds to a physical N_Port, and wherein the first portion of criteria includes a physical PWWN identifier associated with the first N_Port.

6. The method of claim 1 wherein the first N_Port is connected to the first F_Port via a first physical link, and wherein the automatic and dynamic configuration of the first VSAN association is independent from criteria relating to the first physical link.

7. A method of facilitating fabric membership login for a first N_Port of a storage area network, the method comprising:

receiving a first fabric login request from a first network node which includes a first portion of criteria associated with the first N_Port;

automatically identifying, using at least a portion of the first portion of criteria, a first virtual fabric identifier corresponding to a first virtual fabric associated with the first N_Port; and

automatically providing, in response to the first fabric login request, fabric configuration information to the first network node which includes the first virtual fabric identifier.

8. The method of claim 7 further wherein the method is implemented at a first Fibre Channel switch.

9. The method of claim 7 wherein the first portion of criteria includes a PWWN identifier associated with the first N_Port.

10. The method of claim 7 wherein the first portion of criteria includes information selected from at least one of:

PWWN information, NWWN information, FCID information, QoS criteria, node ID information, OUI information, and vendor specific information.

11. The method of claim 7 further comprising:

transmitting the first fabric login request from a first network node to a first F_Port on a Fibre Channel switch;

receiving, from the first F_Port, fabric configuration information which includes the first virtual fabric identifier; and

generating, using at least a portion of the received fabric configuration information, a second fabric login request message which includes a fabric login request for the first N_Port to login to the first virtual fabric.

12. The method of claim 7 further comprising:

transmitting the first fabric login request from a first network node to a first F_Port on a Fibre Channel switch;

determining whether virtual SAN functionality exists on the F_Port; and

defining one or more virtual SAN interfaces on the N_Port, with each virtual SAN interface providing the functionality of an N_Port for a single virtual SAN.

13. A Fibre Channel switch in a storage area network, the Fibre Channel switch comprising:

at least one processor;

at least one first F_Port configured or designed to provide an interface to at least one other network device in the storage area network; and

memory;

the switch being configured or designed to;

identify a first N_Port;

identify a first portion of criteria associated with the first N_Port; and

automatically and dynamically configure a first VSAN association for the first N_Port based upon said first portion of criteria;

wherein the first portion of criteria includes information selected from a group consisting of;

PWWN information, node world wide name (NWWN) information, Fibre Channel address (FCID) information, Quality of Service (QoS) criteria, node ID information, Organization Unique Identifier (OUI) information, and vendor specific information.

14. The Fibre Channel switch of claim 13 wherein the first portion of criteria includes a PWWN identifier associated with the first N_Port.

15. The Fibre Channel switch of claim 13 wherein the first N_Port corresponds to a virtual N_Port, and wherein the first portion of criteria includes a virtual PWWN identifier associated with the first N_Port.

16. The Fibre Channel switch of claim 13 wherein the first N_Port corresponds to a physical N_Port, and wherein the first portion of criteria includes a physical PWWN identifier associated with the first N_Port.

17. The Fibre Channel switch of claim 13 being further configured or designed to:

receive a first fabric login request from the first N_Port; and

identify the first portion of criteria from login information included in the first fabric login request.

18. The Fibre Channel switch of claim 13 wherein the first N_Port is connected to the first F_Port via a first physical link, and wherein the automatic and dynamic configuration of the first VSAN association is not based upon criteria relating to the first physical link.

19. A system for facilitating fabric membership login for a first N_Port of a storage area network, the system comprising:

at least one processor;

at least one interface configured or designed to provide a communication link to at least one other network device in the storage area network; and

memory;

the system being configured or designed to;

receive a first fabric login request from a first network node which includes a first portion of criteria associated with the first N_Port;

automatically identify, using at least a portion of the first portion of criteria, a first virtual fabric identifier corresponding to a first virtual fabric associated with the first N_Port; and

automatically provide, in response to the first fabric login request, fabric configuration information to the first network node which includes the first virtual fabric identifier.

20. The system of claim 19 wherein the first portion of criteria includes a PWWN identifier associated with the first N_Port.

21. The system of claim 19 wherein the first portion of criteria includes information selected from at least one of:

PWWN information, NWWN information, FCID information, QoS criteria, node ID information, OUI information, and vendor specific information.

22. The system of claim 19 being further configured or designed to:

transmit the first fabric login request from a first network node to a first F_Port on a Fibre Channel switch;

receive, from the first F_Port, fabric configuration information which includes the first virtual fabric identifier; and

generate, using at least a portion of the received fabric configuration information, a second fabric login request message which includes a fabric login request for the first N_Port to login to the first virtual fabric.

23. The system of claim 19 being further configured or designed to:

transmit the first communication from a first network node to a first F_Port on a Fibre Channel switch;

determine whether virtual SAN functionality exists on the F_Port; and

defining one or more virtual SAN interfaces on the N_Port, with each virtual SAN interface providing the functionality of an N_Port for a single virtual SAN.

24. The system of claim 19:

wherein the storage area network includes a Fibre Channel fabric; and

wherein the system is implemented as a switch of the Fibre Channel fabric.

25. A system of facilitating fabric membership login for a first N_Port of a storage area network, the system comprising:

at least one processor;

memory;

means for receiving a first fabric login request from a first network node which includes a first portion of criteria associated with the first N_Port;

means for automatically identifying, using at least a portion of the first portion of criteria, a first virtual fabric identifier corresponding to a first virtual fabric which is associated with the first N_Port; and

means for automatically providing fabric configuration information to the first network node which includes the first virtual fabric identifier.

26. A switch for use in a Fibre Channel fabric of a storage area network, the switch comprising:

at least one processor;

at least one interface configured or designed to provide a communication link to at least one other network device in the storage area network; and

memory;

the switch being operable to;

receive a first fabric login request from a first network node which includes a first portion of criteria associated with the first N_Port;

automatically identify, using at least a portion of the first portion of criteria, a first virtual fabric identifier corresponding to a first virtual fabric associated with the first N_Port; and

automatically provide, in response to the first fabric login request, fabric configuration information to the first network node which includes the first virtual fabric identifier.