System and method for exchanging information in a mobile wireless network environment

• US 9,003,057 B2
• Filed: 01/04/2011
• Issued: 04/07/2015
• Est. Priority Date: 01/04/2011
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Mahaffey, Gary B., Iyer, Jayaraman R., Khouderchah, Michel, Leung, Kent K., Mackie, Robert A., Stammers, Timothy P., Pham, Hy Quoc
• Primary Examiner(s): Nalven, Andrew
• Assistant Examiner(s): Doan, Huan V
• Application Number:
  US12/984,034
• Publication Number:
  US 20120173661A1
• Time in Patent Office: 1,554 Days
• Field of Search: 370/216, 370/238, 370/352, 370/396, 370/428, 709/203, 709/226, 709/242, 726/11
• US Class Current: 709/238
• CPC Class Codes: H04L 41/0813 characterised by the conditions triggering a change of settings
• CPC Class Codes: H04L 41/0866 Checking the configuration
• CPC Class Codes: H04L 41/12 Discovery or management of network topologies
• CPC Class Codes: H04L 41/34 Signalling channels for network management communication
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 76/10 Connection setup

Abstract

A method is provided in one example embodiment and includes communicating a message to a remote data plane element in order to request a data plane resource for hosting a session. The method also includes receiving a response at a network element acknowledging the message. Data plane traffic is managed at the remote data plane element based on enforcement rules. The enforcement rules are provisioned in a table element at the remote data plane element, and the table element reflects a portion of a master table element included in the network element.

Claims

1. A method, comprising:

communicating a message from a network element to a remote data plane element in order to request a data plane resource for hosting a session for a particular subscriber, wherein the remote data plane element is designated to host a data plane function for a particular mobile network subscriber and wherein the data plane resource comprises at least one of memory space and processor allocation;

receiving a response at the network element acknowledging the message, wherein data plane traffic is managed at the remote data plane element based on enforcement rules, and wherein the enforcement rules are provisioned in a table element at the remote data plane element, and wherein the table element reflects a portion of a master table element included in the network element; and

communicating subsequent messages to the remote data plane element in order to terminate the session in response to a termination event;

wherein the network element comprises a control plane element for performing control plane functions for the session, including parsing a session create message, interacting with an external policy server, abstracting elements pertinent to the data plane, and controlling which portion of the master table is to be provisioned in the remote data plane element table element;

wherein the remote data plane element comprises a general purpose router for performing data plane functions for the session;

wherein the table element at the remote data plane element includes only enough information for the particular subscriber for mapping flows that are current for the remote data plane element;

wherein the control plane element is divided into a first segment and a second segment in order to utilize resources within a chassis in which the remote data plane element resides; and

wherein the method further comprises;

discovering nodes capable of supporting the control plane functions;

discovering nodes capable of supporting the data plane functions for the session; and

performing a system-specific internal configuration to support separation of the data plane functions and the control plane functions.

2. The method of claim 1, further comprising:

communicating subsequent messages to the remote data plane element in order to;

update the session in response to a mid-session event.

3. The method of claim 1, wherein a control plane element is configured to be used for session management and call setup support activities associated with the session.

4. The method of claim 1, wherein the remote data plane element maintains a specific subset of enforcement rules to be applied to the session, and wherein at least one of enforcement rules relates to a wireless mobility feature for the session.

5. The method of claim 1, wherein a flow is mapped out of a tunnel against user-specific enforcement rules associated with the session.

6. The method of claim 5, wherein one or more data segments from the tunnel are used in order to map the flow to the user-specific enforcement rules.

7. One or more non-transitory tangible media that includes code for execution and when executed by a processor operable to perform operations comprising:

communicating a message from a network element to a remote data plane element in order to request a data plane resource for hosting a session for a particular subscriber, wherein the remote data plane element is designated to host a data plane function for a particular mobile network subscriber and wherein the data plane resource comprises at least one of memory space and processor allocation;

receiving a response at the network element acknowledging the message, wherein data plane traffic is managed at the remote data plane element based on enforcement rules, and wherein the enforcement rules are provisioned in a table element at the remote data plane element, and wherein the table element reflects a portion of a master table element included in the network element; and

communicating subsequent messages to the remote data plane element in order to terminate the session in response to a termination event;

wherein the network element comprises a control plane element for performing control plane functions for the session, including parsing a session create message, interacting with an external policy server, abstracting elements pertinent to the data plane, and controlling which portion of the master table is to be provisioned in the remote data plane element table element;

wherein the remote data plane element comprises a general purpose router for performing data plane functions for the session;

wherein the table element at the remote data plane element includes only enough information for the particular subscriber for mapping flows that are current for the remote data plane element;

wherein the control plane element is divided into a first segment and a second segment in order to utilize resources within a chassis in which the remote data plane element resides; and

wherein the operations further comprise;

discovering nodes capable of supporting the control plane functions;

discovering nodes capable of supporting the data plane functions for the session; and

performing a system-specific internal configuration to support separation of the data plane functions and the control plane functions.

8. The media of claim 7, the operations further comprising:

communicating subsequent messages to the remote data plane element in order to;

update the session in response to a mid-session event.

9. The media of claim 7, wherein a control plane element is configured to be used for session management and call setup support activities associated with the session.

10. The media of claim 7, wherein the remote data plane element maintains a specific subset of enforcement rules to be applied to the session, and wherein at least one of enforcement rules relates to a wireless mobility feature for the session.

11. The media of claim 7, wherein a flow is mapped out of a tunnel against user-specific enforcement rules associated with the session.

12. The media of claim 11, wherein one or more data segments from the tunnel are used in order to map the flow to the user-specific enforcement rules.

13. An apparatus, comprising:

a memory element configured to store data;

a mobility module; and

a processor operable to execute instructions associated with the data, a network sensor configured to interface with the memory element and the processor,

wherein the apparatus is configured to;

communicate a message from a network element to a remote data plane element in order to request a data plane resource for hosting a session for a particular subscriber, wherein the remote data plane element is designated to host a data plane function for a particular mobile network subscriber and wherein the data plane resource comprises at least one of memory space and processor allocation;

receive a response at the network element acknowledging the message, wherein data plane traffic is managed at the remote data plane element based on enforcement rules, and wherein the enforcement rules are provisioned in a table element at the remote data plane element, and wherein the table element reflects a portion of a master table element included in the network element; and

communicate subsequent messages to the remote data plane element in order to terminate the session in response to a termination event;

wherein the network element comprises a control plane element for performing control plane functions for the session, including parsing a session create message, interacting with an external policy server, abstracting elements pertinent to the data plane, and controlling which portion of the master table is to be provisioned in the remote data plane element table element;

wherein the remote data plane element comprises a general purpose router for performing data plane functions for the session; and

wherein the table element at the remote data plane element includes only enough information for the particular subscriber for mapping flows that are current for the remote data plane element;

wherein the control plane element is divided into a first segment and a second segment in order to utilize resources within a chassis in which the remote data plane element resides; and

wherein the apparatus is further configured to;

discover nodes capable of supporting the control plane functions;

discover nodes capable of supporting the data plane functions for the session;

and perform a system-specific internal configuration to support separation of the data plane functions and the control plane functions.

14. The apparatus of claim 13, wherein a control plane element is configured to be used for session management and call setup support activities associated with the session.

15. The apparatus of claim 13, wherein the remote data plane element maintains a specific subset of enforcement rules to be applied to the session, and wherein at least one of enforcement rules relates to a wireless mobility feature for the session.

16. The apparatus of claim 13, wherein a flow is mapped out of a tunnel against user-specific enforcement rules associated with the session.

17. The apparatus of claim 16, wherein one or more data segments from the tunnel are used in order to map the flow to the user-specific enforcement rules.

18. The apparatus of claim 13, wherein the remote data plane element is provisioned in a line card resident in the chassis and coupled to a server blade.

19. The apparatus of claim 18, wherein additional resources are included in the chassis to support layer 7 (L7) classification operations in the chassis.

20. The apparatus of claim 19, wherein the L7 classification operations are coordinated with a packet transfer activity occurring at a network location proximate to a data center.

21. The apparatus of claim 13, wherein certain flows are communicated from the remote data plane to a deep packet inspection (DPI) capable network element, and wherein the certain flows are communicated back from the DPI capable network element.