Arrangements and methods for access to stored data

• US 8,812,671 B2
• Filed: 12/26/2012
• Issued: 08/19/2014
• Est. Priority Date: 07/01/2009
• Status: Active Grant

• Current Assignee: Juniper Networks Incorporated
• Original Assignee: Juniper Networks Incorporated
• Inventors: Medard, Muriel, Aikens, Mark, Colon, Louis M. Jr., Hurley, James M., Kilian, Michael, McShane, Matthew, Warres, Michael, Scheifler, Robert W.
• Primary Examiner(s): JEAN GILLES, JUDE
• Application Number:
  US13/727,400
• Publication Number:
  US 20130117450A1
• Time in Patent Office: 601 Days
• Field of Search: 709/225, 709/232, 709/234, 709/204, 709/206, 709/207, 709/213, 709/203, 709/216, 709/245, 709/223, 709/217
• US Class Current: 709/225
• CPC Class Codes: H04L 67/1001 for accessing one among a plurality of replicated servers
• 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]
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066

Abstract

An access server generates a handshake with storage servers resulting in more rapid access to the stored data, for example, video data, by a user. The handshake also results in load balancing effects.

Claims

1. A device comprising:

a memory; and

a processor to;

send, to a network device, a message requesting access to content via the network device,

the content being available to the network device via a network,

receive, from the network device and based on sending the message, information identifying one or more conditions,

the one or more conditions indicating an ability of the network device to provide the access to the content,

determine that the one or more conditions satisfy one or more criteria associated with the device obtaining the content,

initiate, based on the one or more conditions satisfying the one or more criteria, access to the content via the network device,

obtain the content from the network device based on initiating the access to the content, and

store the accessed content in the memory.

2. The device of claim 1, where the network device is one of a plurality of network devices, and

where the processor is further to:

send the message to the plurality of network devices,

the content being available to the plurality of network devices via at least one network,

receive, from the plurality of network devices and based on sending the message, information identifying respective conditions associated with the plurality of network devices providing the access to the content,

the respective conditions including the one or more conditions, and

select the network device, from the plurality of network devices, based on a comparison of the respective conditions to the one or more criteria.

3. The device of claim 2, where the processor, when sending the message to the plurality of network devices, is further to:

multicast the message to the plurality of network devices.

4. The device of claim 1, where the network device is a first network device,

where the processor, when initiating the access to the content via the network device, is further to:

initiate, based on the information identifying the one or more conditions, access to a first portion of the content via the first network device, and access to a second portion of the content via a second network device that differs from the first network device,

the first portion of the content being different from the second portion of the content, and

where the processor, when obtaining the content, is to;

obtain the first portion of the content via the first network device, and

obtain the second portion of the content via the second network device.

5. The device of claim 1, where the network device is an access server that acquires the content, via the network, from one or more storage servers.

6. The device of claim 1, where the information includes data identifying, as the one or more conditions, at least one of:

an available bandwidth associated with the network device acquiring the content via the network, or

a delay associated with the network device acquiring the content via the network, and

where the one or more criteria include information identifying at least one of;

a bandwidth associated with obtaining the content by the device, or

a maximum delay associated with obtaining the content by the device.

7. The device of claim 1, where the information includes a score associated with the network device acquiring the content via the network,

the score being based on at least one of:

an available bandwidth associated with the network device acquiring the content via the network, or

a delay associated with the network device acquiring the content via the network, and

where the one or more criteria include information identifying at least one of;

a bandwidth associated with obtaining the content by the device, or

a maximum delay associated with obtaining the content by the device.

8. A method comprising:

receiving, by a device and from a user device, a request for content;

sending, by a device and based on receiving the request, a message, to a plurality of network devices, requesting access to the content,

the content being available to the plurality of network devices via at least one network;

receiving, by the device and from the plurality of network devices, information identifying respective conditions associated with an ability of each network device, of the plurality of network devices, to provide access to the content;

selecting, by the device, at least one network device, of the plurality of network devices, based on a comparison of the respective conditions to one or more requirements associated with providing the content to the user device;

initiating, by the device, access to the content via the at least one network device; and

causing, by the device and based on initiating the access to the content, the content to be provided to the user device.

9. The method of claim 8, where selecting the at least one device includes:

identifying, based on the information, one or more conditions associated with acquiring the content from each network device of the plurality of network devices; and

for each network device;

determining whether the one or more conditions satisfy the one or more requirements; and

selecting, when the one or more conditions satisfy the one or more requirements, the network device,

the network device not being selected when the one or more conditions do not satisfy the one or more requirements.

10. The method of claim 8, where sending the message to the plurality of network devices further includes:

multicasting the message to the plurality of network devices.

11. The method of claim 8, where the at least one network device includes a first network device and a second network device;

where initiating the access to the content further includes;

initiating, based on the information identifying the respective conditions, access to a first portion of the content via the first network device and access to a second portion of the content via a second network device that differs from the first network device,

the first portion of the content being different from the second portion of the content; and

where causing the content to be provided to the user device includes;

causing the first portion of the content to be provided to the user device via the first network device, and

causing the second portion of the content to be provided to the user device via the second network device.

12. The method of claim 8, where the plurality of network devices are access servers.

13. The method of claim 8, where the information includes information identifying one or more of:

respective available bandwidths associated with the plurality of network devices providing the content, or

respective delays associated with the plurality of network devices providing the content; and

where the one or more requirements include one or more of;

a required bandwidth associated with providing the content to the user device, or

a maximum delay associated with providing the content to the user device.

14. The method of claim 8, where the information includes respective scores associated with the plurality of network devices providing the content,

each of the scores being based on at least one of:

an available bandwidth associated with a respective one of the network devices providing the content, or

a delay associated with the respective one of the network devices providing the content; and

where the one or more requirements include one or more of;

a required bandwidth associated with providing the content to the user device, or

a maximum delay associated with providing the content to the user device.

15. A non-transitory memory device storing instructions, the instructions comprising:

one or more instructions that, when executed by a first device, cause the first device to receive, from a second device, a request for access to content,

the content being available to the first device via a network;

one or more instructions that, when executed by the first device, cause the first device to determine one or more conditions associated with an ability of the first device to provide the content to the second device;

one or more instructions that, when executed by the first device, cause the first device to forward, to the second device, an offer identifying the one or more conditions;

one or more instructions that, when executed by the first device, cause the first device to receive, based on forwarding the offer, an acceptance of the offer;

one or more instructions that, when executed by the first device, cause the first device to acquire, based on receiving the acceptance, at least a portion of the content via the network; and

one or more instructions that, when executed by the first device, cause the first device to provide the at least the portion of the content to the second device.

16. The non-transitory memory device of claim 15, where the at least the portion of the content is a first portion of the content, and

where the second device accesses a second portion of the content via a third device.

17. The non-transitory memory device of claim 15, where the first device and the second devices are access servers.

18. The method non-transitory memory device of claim 15, where the one or more instructions to acquire the at least the portion of the content further include:

one or more instructions to acquire the at least the portion of the content from one or more storage servers that are remote from the first device and the second device.

19. The non-transitory memory device of claim 15, where the one or more instructions to determine the one or more conditions include:

one or more instructions to determine at least one of;

an available bandwidth associated with the first device acquiring the content via the network, or

a delay associated with the first device acquiring the content via the network.

20. The non-transitory memory device of claim 15, where the instructions further comprise:

one or more instructions to determine at least one condition associated with forwarding the content from the first device to the second device; and

one or more instructions to include, in the offer, information identifying the at least one condition.