CA2570572A1 - System and method for loadbalancing in a network environment using feedback information - Google Patents

System and method for loadbalancing in a network environment using feedback information Download PDF

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Publication number
CA2570572A1
CA2570572A1 CA002570572A CA2570572A CA2570572A1 CA 2570572 A1 CA2570572 A1 CA 2570572A1 CA 002570572 A CA002570572 A CA 002570572A CA 2570572 A CA2570572 A CA 2570572A CA 2570572 A1 CA2570572 A1 CA 2570572A1
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CA
Canada
Prior art keywords
network node
feedback information
selected network
communication session
end user
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Granted
Application number
CA002570572A
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French (fr)
Other versions
CA2570572C (en
Inventor
Ashish A. Chandwadkar
Jayaraman R. Iyer
Chris O'rourke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cisco Technology Inc
Original Assignee
Cisco Technology, Inc.
Ashish A. Chandwadkar
Jayaraman R. Iyer
Chris O'rourke
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Publication date
Application filed by Cisco Technology, Inc., Ashish A. Chandwadkar, Jayaraman R. Iyer, Chris O'rourke filed Critical Cisco Technology, Inc.
Publication of CA2570572A1 publication Critical patent/CA2570572A1/en
Application granted granted Critical
Publication of CA2570572C publication Critical patent/CA2570572C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/11—Identifying congestion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/12—Avoiding congestion; Recovering from congestion
    • H04L47/125—Avoiding congestion; Recovering from congestion by balancing the load, e.g. traffic engineering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/72—Admission control; Resource allocation using reservation actions during connection setup
    • H04L47/726—Reserving resources in multiple paths to be used simultaneously
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/78—Architectures of resource allocation
    • H04L47/781—Centralised allocation of resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/80—Actions related to the user profile or the type of traffic
    • H04L47/801—Real time traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/80—Actions related to the user profile or the type of traffic
    • H04L47/805—QOS or priority aware
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/82—Miscellaneous aspects
    • H04L47/822—Collecting or measuring resource availability data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/82—Miscellaneous aspects
    • H04L47/824—Applicable to portable or mobile terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/1004—Server selection for load balancing
    • H04L67/1008—Server selection for load balancing based on parameters of servers, e.g. available memory or workload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/1029—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers using data related to the state of servers by a load balancer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
    • H04L67/1031—Controlling of the operation of servers by a load balancer, e.g. adding or removing servers that serve requests
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H04L63/0892—Network architectures or network communication protocols for network security for authentication of entities by using authentication-authorization-accounting [AAA] servers or protocols

Abstract

A method for loadbalancing in a network environment is provided that includes receiving a request from an end user for a communication session at a central node. The method further includes identifying a selected one of a plurality of network nodes to facilitate the communication session for the end user based on feedback information provided by the selected network node. The feedback information is communicated from the selected network node and processed before making a decision to establish the communication session between the selected network node and the end user.

Claims (21)

1. An apparatus for loadbalancing in a network environment, comprising:
a loadbalancer operable to receive a request from an end user for a communication session and to identify a selected one of a plurality of network nodes to facilitate the communication session for the end user based on feedback information provided by the selected network node, wherein the feedback information is communicated from the selected network node to the loadbalancer such that the loadbalancer may process the feedback information before making a decision to establish the communication session between the selected network node and the end user.
2. The apparatus of Claim 1, wherein the loadbalancer includes a first feedback element that is coupled to a second feedback element which is included in the selected network node, the first feedback element being operable to receive the feedback information from the second network node.
3. The apparatus of Claim 2, wherein the loadbalancer includes a table operable to store the feedback information associated with the selected network node.
4. The apparatus of Claim 3, wherein the loadbalancer is operable to reference the table before making a subsequent loadbalancing decision.
5. The apparatus of Claim 1, wherein the feedback information includes a selected one or more elements from a group of elements consisting of:
a) a quality of service parameter associated with the selected network node;
b) a quantity associated with a number of sessions to be accommodated by the selected network node;
c) an ability of the selected network node to accommodate voice data; and d) an ability of the selected network node to accommodate video data.
6. The apparatus of Claim 1, wherein the selected network node is operable to communicate with an authentication, authorization, and accounting (AAA), server before returning the feedback information to the loadbalancer, and wherein the AAA server may provide resource information to the selected network node, which can use the resource information in order to determine if it can accommodate the communication session.
7. The apparatus of Claim 6, wherein the AAA
server is operable to communicate with a database that includes the resource information which is provided in one or more profiles associated with the end user.
8. A method for loadbalancing in a network environment, comprising:
receiving a request from an end user for a communication session at a central node; and identifying a selected one of a plurality of network nodes to facilitate the communication session for the end user based on feedback information provided by the selected network node, wherein the feedback information is communicated from the selected network node and processed before making a decision to establish the communication session between the selected network node and the end user.
9. The method of Claim 8, wherein the central node includes a first feedback element that is coupled to a second feedback element which is included in the selected network node, the first feedback element being operable to receive the feedback information from the second network node.
10. The method of Claim 9, wherein the central node includes a table operable to store the feedback information associated with the selected network node.
11. The method of Claim 10, further comprising:
referencing the table before making a subsequent loadbalancing decision.
12. The method of Claim 8, wherein the feedback information includes a selected one or more of a group of elements consisting of:

a) a quality of service parameter associated with the selected network node;

b) a quantity associated with a number of sessions to be accommodated by the selected network node;
c) an ability of the selected network node to accommodate voice data; and d) an ability of the selected network node to accommodate video data.
13. The method of Claim 8, wherein the central node is an element selected from a group of elements consisting of:
a) a router;
b) a loadbalancer;
c) a switch;
d) a gateway; and e) bridge.
14. A system for loadbalancing in a network environment, comprising:
means for receiving a request from an end user for a communication session; and means for identifying a selected one of a plurality of network nodes to facilitate the communication session for the end user based on feedback information provided by the selected network node, wherein the feedback information is communicated from the selected network node and processed before making a decision to establish the communication session between the selected network node and the end user.
15. The system of Claim 14, further comprising:
means for providing a table operable to store the feedback information associated with the selected network node.
16. The system of Claim 15, further comprising:
means for referencing the table before making a subsequent loadbalancing decision.
17. Software for loadbalancing in a network environment, the software being embodied in a computer readable medium and including code operable to:
receive a request from an end user for a communication session at a central node; and identify a selected one of a plurality of network nodes to facilitate the communication session for the end user based on feedback information provided by the selected network node, wherein the feedback information is communicated from the selected network node and processed before making a decision to establish the communication session between the selected network node and the end user.
18. The medium of Claim 17, wherein the code is further operable to store the feedback information associated with the selected network node in a table.
19. The medium of Claim 18, wherein the code is further operable to reference the table before making a subsequent loadbalancing decision.
20. The medium of Claim 17, wherein the code is further operable to communicate with an authentication, authorization, and accounting (AAA) server before returning the feedback information to the central node, and wherein the AAA server may provide resource information to the selected network node, which can use the resource information in order to determine if it can accommodate the communication session.
21. A method for loadbalancing in a network environment, comprising:
receiving a request from an end user for a communication session at a central node;
referencing a table; and identifying a selected one of a plurality of network nodes to facilitate the communication session for the end user based on previously communicated feedback information associated with the plurality of network nodes, wherein the feedback information is stored in the table and processed by the central node before making a decision to establish the communication session between the selected network node and the end user.
CA2570572A 2004-06-21 2005-02-14 System and method for loadbalancing in a network environment using feedback information Expired - Fee Related CA2570572C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/873,442 2004-06-21
US10/873,442 US7020090B2 (en) 2004-06-21 2004-06-21 System and method for loadbalancing in a network environment using feedback information
PCT/US2005/004769 WO2006009584A1 (en) 2004-06-21 2005-02-14 System and method for loadbalancing in a network environment using feedback information

Publications (2)

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CA2570572A1 true CA2570572A1 (en) 2006-01-26
CA2570572C CA2570572C (en) 2012-06-05

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US (2) US7020090B2 (en)
EP (1) EP1766827B1 (en)
CN (1) CN1965519B (en)
CA (1) CA2570572C (en)
WO (1) WO2006009584A1 (en)

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WO2006009584A1 (en) 2006-01-26
CA2570572C (en) 2012-06-05
EP1766827A4 (en) 2011-08-31
US7020090B2 (en) 2006-03-28
US20050281205A1 (en) 2005-12-22
EP1766827A1 (en) 2007-03-28
EP1766827B1 (en) 2015-12-30
US20060109785A1 (en) 2006-05-25
CN1965519A (en) 2007-05-16
US7719974B2 (en) 2010-05-18

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