System to dynamically detect and correct errors in a session

• US 8,086,737 B2
• Filed: 12/07/2005
• Issued: 12/27/2011
• Est. Priority Date: 12/07/2005
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Chandrupatla, Sunil Kumar, Deshpande, Nachiket J., Gopalakrishnan, Saikrishnan, Roy, Anirban
• Primary Examiner(s): Follansbee, John
• Assistant Examiner(s): Mejia, Anthony
• Application Number:
  US11/297,205
• Publication Number:
  US 20070127384A1
• Time in Patent Office: 2,211 Days
• Field of Search: 709/220, 709/221, 709/227, 714/4, 714/9, 370/351
• US Class Current: 709/227
• CPC Class Codes: H04L 41/0663 Performing the actions predefined by failover planning, e.g. switching to standby network elements
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04L 67/145 avoiding end of session, e.g. keep-alive, heartbeats, resumption message or wake-up for inactive or interrupted session
• CPC Class Codes: H04L 69/40 for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection management of faults, events, alarms or notifications in data switching networks H04L41/06

Abstract

A system for detecting and correcting an error in session between a client and a host over a network. When the system receives an indication of an error in a session, the system determines an error correction modification to the configuration of the session to correct the error. The system then implements the error correction modification to the configuration of the session and continues the session.

Claims

1. A method for correcting errors in a session between a client and a server over a connection in a network, comprising:

receiving an input of one or more error correction modifications for configuration of sessions between clients and servers;

generating one or more new objects for said one or more error correction modifications for configuration of sessions between clients and servers;

storing said one or more new objects for the one or more error correction modifications for configuration of sessions between clients and servers in a memory;

receiving an indication of an error in said session between said client and said server;

reading, from said memory that stores said one or more new objects for the one or more error correction modifications, an error correction modification of said one or more error correction modifications that corresponds to the received error indication for said session between said client and said server, responsive to receiving said indication of said error in said session;

implementing said error correction modification to change said configuration of said session between said client and said server to correct said error in said session; and

continuing said session between said client and said server, after implementation of said error correction modification to said configuration of said session.

2. The method of claim 1 wherein said step of reading said error correction modification comprises:

determining said error in said session indicated by said indication;

determining said error correction modification based upon said error in said session; and

reading said error correction modification determined from said error in said session from said memory.

3. The method of claim 1 wherein said step of reading said error correction modification comprises:

determining said error correction modification based upon an identification of said client.

4. The method of claim 3 wherein said indication of said error in said session includes said identification of said client.

5. The method of claim 1 wherein said step of reading said error correction modification further comprises:

determining said error correction modification based upon a Quality of Service provided to said client; and

reading said error correction modification from said memory responsive to said determination.

6. The method of claim 5 wherein said indication of said error in said session includes said Quality of Service for said client.

7. The method of claim 1 wherein said error correction modification stored in said memory for said error in the session is a default error correction modification.

8. The method of claim 7 further comprising:

wherein said step of reading includes selecting said error correction modification for said error in said session.

9. A memory storing one or more instructions for correcting errors in a session between a client and a server over a network, the one more instructions including instructions which executed by one or more processors, cause the one or more processors to:

receive an input of one or more error correction modifications for configuration of sessions between clients and servers;

generate one or more new objects for said one or more error correction modifications for configuration of sessions between clients and servers;

store said one or more new objects for the one or more error correction modifications for configuration of sessions between clients and servers in a memory;

receive an indication of an error in a session between said client and said server;

read, from said memory that stores said one or more new objects for the one or more error correction modifications, an error correction modification of the one or more error condition modifications that corresponds to the received error indication for said session between said client and said server, responsive to receiving said indication of said error in said session;

implement said error correction modification to change said configuration of said session between said client and said server to correct said error in said session; and

continue said session between said client and said server, after implementation of said error correction modification to said configuration of said session.

10. The memory of claim 9 wherein said instructions which executed by one or more processors cause the one or more processors to read said error correction modification comprise instructions to:

determine said error in said session indicated by said indication;

determine said error correction modification based upon said error in said session; and

read said error correction modification determined from said error in said session from said memory.

11. The memory of claim 9 wherein said instructions which executed by one or more processors cause the one or more processors to read said error correction modification based upon said error in said session comprise instructions to:

determine said error correction modification based upon an identification of said client.

12. The memory of claim 11 wherein said indication of said error in said session includes said identification of said client.

13. The memory of claim 9 wherein said instructions which executed by one or more processors cause the one or more processors to read said error correction modification further comprise instructions to:

determine said error correction modification based upon a Quality of Service provided to said client; and

read said error correction modification from said memory responsive to said determination.

14. The memory of claim 13 wherein said indication of said error in said session includes said Quality of Service for said client.

15. The memory of claim 9 wherein said error correction modification stored in said memory for said error in said session is a default error correction modification.

16. The memory of claim 15 wherein said read selects said user error correction modification for said error in said session.

17. A router that provides a session between a client and a server over a network, having a memory that stores instructions for correcting an error detected in said session, wherein said instructions configure said router to:

receive an input of one or more error correction modifications for configuration of sessions between clients and servers;

generate one or more new objects for said one or more error correction modifications for configuration of sessions between clients and servers;

store said one or more new objects for the one or more error correction modifications for configuration of sessions between clients and servers in a memory;

receive an indication of said error in said session between said client and said server;

read, from said memory that stores said one or more new objects for one or more error correction modifications, an error correction modification of the one or more error correction modifications that corresponds to the received error indication for said session between said client and said server, responsive to receiving said indication of said error in said session;

implement said error correction modification to change said configuration of said session between said client and said server to correct said error in said session; and

continue said session between said client and said server after implementation of said error correction modification to said configuration.

18. The router of claim 17 wherein said instructions that configure said router to read said error correction modification configure said router to:

determine said error in said session indicated by said indication;

determine said error correction modification based upon said error in said session; and

read said error correction modification determined from said error from said memory.

19. The router of claim 17 wherein said instructions that configure said router to read said error correction modification configure said router to:

determine said error correction modification based upon an identification of said client.

20. The router of claim 19 wherein said indication of said error in said session includes said identification of said client.

21. The router of claim 17 wherein said instructions that configure said router to determine said error correction modification configure said router to:

determine said error correction modification based upon a Quality of Service provided to said client; and

read said error correction modification from said memory responsive to said determination.

22. The router of claim 21 wherein said indication of said error in said session includes said Quality of Service for said client.

23. The router of claim 17 wherein said error correction modification stored in said memory for said error in said session is a default error correction modification.

24. The router of claim 23 wherein said instructions that configure said router to read select said user error correction modification for said error in said session.

25. A method comprising:

receiving an input of one or more error correction modifications for configuration of sessions between clients and servers in a network;

generating one or more new objects for said one or more error correction modifications;

storing said one or more new objects for the one or more error correction modifications in a memory along with a plurality of objects for various types of errors, each object indicating an error correction modification for uses with a corresponding type of error in sessions;

receiving an indication that an error has occurred in a session between a client and a server in the network, said indication identifying a type of said error in said session;

accessing an object stored in said memory that corresponds to said type of said error in said session between said client and said server, in response to receiving the indication that the error has occurred in said session between said client and said server;

implementing an error correction modification from said object to change a configuration of said session between said client and said server to correct said error in said session, absent termination of said session between said client and said server; and

continuing said session between said client and said server, after implementation of said error correction modification.

26. The method of claim 25 wherein said implementing is performed absent manual action by an administrator of said network.

27. The method of claim 25 wherein said indication further identifies one or more of a user of said session and a Quality of Service (QoS) provided to said user of said session.

28. The method of claim 25 wherein said error correction modification comprises changing a port on a router that is used to transmit data for said session.

29. The method of claim 25 wherein said error correction modification comprises changing a router used with said session.

30. The method of claim 25 wherein said error correction modification comprises allowing said session to proceed without authentication.

31. An apparatus comprising:

a memory;

a plurality of ports;

an event manager that receives an indication on one of the ports that an error has occurred in a session between a client and a server, said indication identifying a type of said error;

a profile manager to receive an input of one or more error correction modifications for session configuration, generate one or more new objects for the received one or more error correction modifications, store said one or more new objects for said one or more error correction modifications in memory along with a plurality of objects for various types of errors that indicate an error correction modification for use with a corresponding type of error in said session;

a policy manager that interacts with the profile manager to retrieve an object of the plurality of objects that corresponds to said type of said error in said session, and implements an error correction modification, from the one or more error correction modifications, from said object to change a configuration of said session between said client and said server to correct said error in said session, absent termination of said session between said client and said server.

32. The apparatus of claim 31 wherein said indication further identifies one or more of a user of said session and a Quality of Service (QoS) provided to said user of said session.

33. The apparatus of claim 31 wherein said error correction modification comprises changing a port of said plurality of ports on said apparatus that is used to transmit data for said session.

34. The apparatus of claim 31 wherein said error correction modification comprises changing a router used with said session.

35. The apparatus of claim 31 said error correction modification comprises allowing said session to proceed without authentication.