Port pooling

• US 9,769,253 B2
• Filed: 04/13/2016
• Issued: 09/19/2017
• Est. Priority Date: 06/26/2006
• Status: Expired due to Fees

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Bose, Patrick Glen, Vong, Ky Tong, Vaidya, Shrikant Jay
• Primary Examiner(s): Scheibel, Robert C
• Application Number:
  US15/097,522
• Publication Number:
  US 20160226962A1
• Time in Patent Office: 524 Days
• Field of Search: None
• CPC Class Codes: H04L 49/557 Error correction, e.g. fault recovery or fault tolerance
• CPC Class Codes: H04L 67/1001 for accessing one among a plurality of replicated servers
• CPC Class Codes: H04L 67/1008 based on parameters of servers, e.g. available memory or workload monitoring of computer activity G06F11/30
• CPC Class Codes: H04L 67/1029 using data related to the state of servers by a load balancer
• CPC Class Codes: H04L 67/1031 Controlling of the operation of servers by a load balancer, e.g. adding or removing servers that serve requests
• CPC Class Codes: H04L 67/1034 Reaction to server failures by a load balancer
• 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

In one embodiment, methods and systems for port pooling are described. An interface may communicate with at least one physical server. The at least one physical server may host a plurality of virtual servers and be connectable via a plurality of gateway ports to a storage area network (SAN). A virtual server manager configured to arrange the plurality of gateway ports in a plurality of port pools, define a virtual server group including a plurality of virtual servers, associate each virtual server with one or more port pools, the one or more port pools defining available gateway ports for access by the particular virtual server; and provide configuration instructions to allow the particular virtual server to communicate with the SAN through the available gateway ports.

Claims

1. An apparatus comprising:

a processor; and

a memory having instructions stored thereon, wherein execution of the instructions cause a virtual server manager to;

group a plurality of gateway ports, located on two or more gateway devices, into a plurality of port pools, wherein each port pool of the plurality of port pools includes ports located on at least two of the two or more gateway devices;

generate a pool listing that specifies a set of the gateway ports associated with in two or more of the plurality of port pools, available for access by a virtual server, of a plurality of virtual servers, that connects to a plurality of network devices through one or more of plurality of port pools;

associate, based on the pool listing, a given virtual server of the plurality of virtual servers with one or more of the plurality of port pools, wherein the plurality of port pools defines available gateway ports for access by the given virtual server; and

cause transmission of a configuration instruction that causes the given virtual server to communicate with one or more of the plurality of network devices through the gateway ports of one or more port pool associated with the given virtual server.

2. The apparatus of claim 1, wherein the instructions, when executed by the processor, further cause the virtual server manager to, in response to detecting a configuration error, balance a load across the plurality of gateway ports of the plurality of port pools.

3. The apparatus of claim 1, wherein the instructions, when executed by the processor, further cause the virtual server manager to, in response to detecting a configuration error, dynamically balance, via a balancing operation, a load across the plurality of gateway ports of the plurality of port pools by migrating one or more virtual servers associated with a first port pool of the plurality of port pools to a second port pool of the plurality of port pools.

4. The apparatus of claim 1, comprising:

one or more of the plurality of gateway ports.

5. The apparatus of claim 1, wherein the instructions, when executed by the processor, further cause the virtual server manager to:

enforce an allocation policy that defines an allocation of the plurality of available gateway ports to the plurality of port pools; and

provide the plurality of virtual servers with access to the plurality of allocated available gateway ports based on the allocation policy.

6. The apparatus of claim 1, wherein the instructions, when executed by the processor, further cause the virtual server manager to:

transmit a configuration instruction that cause the given virtual server to communicate with the network devices through a subset of the plurality of available gateway ports.

7. The apparatus of claim 1, wherein the instructions, when executed by the processor, further cause the virtual server manager to:

reassign one or more of the virtual server of the plurality of virtual servers to another physical server, the one or more reassigned virtual server being associated with another subset of the plurality of available gateway ports.

8. The apparatus of claim 1, wherein the instructions, when executed by the processor, further cause the virtual server manager to:

migrate a virtual server from a first gateway port to a second gateway port in a same port pool from the plurality of port pools.

9. The apparatus of claim 1, wherein each port pool is associated with a World-Wide Node Port Names.

10. The apparatus of claim 1, wherein the plurality of network devices comprises a SAN (storage area network).

11. The apparatus of claim 1, wherein the instructions, when executed by the processor, further cause the virtual server manager to:

generate a World-Wide Port Name (WWPN);

bind the WWPN to a port pool from the plurality of port pools; and

assign the WWPN for the given virtual server associated with the port pool.

12. A method comprising:

grouping, by a processor a computing device, a plurality of gateway ports, located on at least two of two or more gateway devices, into a plurality of port pools, wherein each port pool of the plurality of port pools includes ports located on at least two of the two or more gateway devices;

generating, by the processor, a pool listing that specifies a set of the gateway ports associated with two or more of the plurality of port pools, available for access by a virtual server, of a plurality of virtual servers, that connects to a plurality of network devices through one or more of plurality of port pools;

associating, by the processor, based on the pool listing, a given virtual server from the plurality of virtual servers with one or more of the plurality of port pools, wherein the plurality of port pools defines available gateway ports for access by the given virtual server; and

causing, by the processor, transmission of a configuration instruction that causes the given virtual server to communicate with one or more of the plurality of network devices through gateway ports of one or more port pool associated with the given virtual server.

13. The method of claim 12, comprising:

in response to detecting a configuration error, balancing a load across the plurality of gateway ports of the plurality of port pools.

14. The method of claim 12, comprising:

in response to detecting a configuration error, dynamically balancing, by the processor, based on bandwidth, a load across the plurality of gateway ports of the plurality of port pools by migrating one or more virtual servers associated with a first port pool of the plurality of port pools to a second port pool of the plurality of port pools.

15. The method of claim 12, comprising:

enforcing, by the processor, an allocation policy that defines an allocation of the plurality of available gateway ports to the plurality of port pools; and

providing, by the processor, the plurality of virtual servers with access to the plurality of allocated available gateway ports based on the allocation policy.

16. The method of claim 12, comprising:

causing, by the processor, transmission a configuration instruction that causes the given virtual server to communicate with the network devices through a subset of the plurality of available gateway ports.

17. The method of claim 12, comprising:

reassign, by the processor, one or more of the virtual server of the plurality of virtual servers to another physical server, the one or more reassigned virtual server being associated with another subset of the plurality of available gateway ports.

18. The method of claim 12, comprising:

migrating, by the processor, a virtual server from a first gateway port to a second gateway port in a same port pool from the plurality of port pools.

19. The method of claim 12, comprising:

generating, by the processor, a World-Wide Port Name (WWPN);

binding, by the processor, the WWPN to a port pool from the plurality of port pools; and

assigning, by the processor, the WWPN for the given virtual server associated with the port pool.

20. A non-transitory computer-readable medium having instructions stored thereon, wherein execution of the instructions, cause a processor of a computing device to:

group a plurality of gateway ports, located on at least two of two or more gateway devices, into a plurality of port pools, wherein each port pool of the plurality of port pools includes ports located on at least two of the two or more gateway devices;

generate a pool listing that specifies a set of the gateway ports associated with two or more of the plurality of port pools, available for access by a virtual server, of a plurality of virtual servers, that connects to a plurality of network devices through one or more of plurality of port pools;

associate based on the pool listing, a given virtual server from the plurality of virtual servers with one or more of the plurality of port pools, wherein the plurality of port pools defines available gateway ports for access by the given virtual server; and

cause transmission of a configuration instruction that causes the given virtual server to communicate with one or more of the plurality of network devices through gateway ports of one or more port pool associated with the given virtual server.