CA2637743A1 - Method and apparatus for the assessment and optimization of network traffic - Google Patents

Method and apparatus for the assessment and optimization of network traffic Download PDF

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Publication number
CA2637743A1
CA2637743A1 CA002637743A CA2637743A CA2637743A1 CA 2637743 A1 CA2637743 A1 CA 2637743A1 CA 002637743 A CA002637743 A CA 002637743A CA 2637743 A CA2637743 A CA 2637743A CA 2637743 A1 CA2637743 A1 CA 2637743A1
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network
groups
devices
populating
metrics
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CA002637743A
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French (fr)
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CA2637743C (en
Inventor
Michael A. Lloyd
Sean P. Finn
Mansour J. Karam
Omar C. Baldonado
Herbert S. Madan
James G. Mcguire
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Avaya Inc
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Priority claimed from US09/903,423 external-priority patent/US7363367B2/en
Priority claimed from US09/903,441 external-priority patent/US7080161B2/en
Priority claimed from US09/923,924 external-priority patent/US7406539B2/en
Application filed by Individual filed Critical Individual
Publication of CA2637743A1 publication Critical patent/CA2637743A1/en
Application granted granted Critical
Publication of CA2637743C publication Critical patent/CA2637743C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/22—Alternate routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/02—Topology update or discovery
    • H04L45/04—Interdomain routing, e.g. hierarchical routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/12—Shortest path evaluation
    • H04L45/123—Evaluation of link metrics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/12—Shortest path evaluation
    • H04L45/124—Shortest path evaluation using a combination of metrics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
    • 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
    • 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
    • H04L47/20—Traffic policing
    • 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
    • H04L47/28—Flow control; Congestion control in relation to timing considerations
    • H04L47/283—Flow control; Congestion control in relation to timing considerations in response to processing delays, e.g. caused by jitter or round trip time [RTT]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
    • H04L41/508—Network service management, e.g. ensuring proper service fulfilment according to agreements based on type of value added network service under agreement
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
    • H04L41/508—Network service management, e.g. ensuring proper service fulfilment according to agreements based on type of value added network service under agreement
    • H04L41/5096—Network service management, e.g. ensuring proper service fulfilment according to agreements based on type of value added network service under agreement wherein the managed service relates to distributed or central networked applications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/02—Capturing of monitoring data
    • H04L43/026—Capturing of monitoring data using flow identification
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
    • H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
    • H04L43/0817—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking functioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0823—Errors, e.g. transmission errors
    • H04L43/0829—Packet loss
    • H04L43/0835—One way packet loss
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0823—Errors, e.g. transmission errors
    • H04L43/0829—Packet loss
    • H04L43/0841—Round trip packet loss
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0852—Delays
    • H04L43/0858—One way delays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0852—Delays
    • H04L43/0864—Round trip delays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0852—Delays
    • H04L43/087—Jitter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0876—Network utilisation, e.g. volume of load or congestion level
    • H04L43/0882—Utilisation of link capacity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/16—Threshold monitoring

Abstract

A system for the assessment of network performance criteria, and applying this criteria to the classification of network addresses into appropriate ranges, using these ranges to consolidate performance measurements for the associated addresses, and applying these metrics toward the optimization of the network towards performance or policy objectives.

Claims (36)

1. A method of populating a plurality of one or more groups with a plurality of one or more network addresses, the method comprising:

selecting a plurality of one or more metrics, the plurality of one or more metrics including one or more of path performance, network cost, network usage, geographical proximity, topological proximity, and statistical similarity;

creating the plurality of one or more groups in one or more network devices, network devices including one or more of servers, forwarding devices, and routing devices;

populating each of the plurality of one or more groups with a subset of the plurality of one or more network addresses based on at least a classification function, the classification function at least partly determined by at least one of the plurality of one or more metrics; and including one or more network addresses from one or more groups of the plurality of one or more groups in a plurality of one or more routing tables distributed across the internetwork.
2. The method of claim 1, wherein at least path performance is selected.
3. The method of claim 1, wherein at least network cost is selected.
4. The method of claim 1, wherein at least network usage is selected.
5. The method of claim 1, wherein at least geographical proximity is selected.
6. The method of claim 1, wherein at least topological proximity is selected.
7. The method of claim 1, wherein at least statistical similarity is selected.
8. The method of claim 1, wherein the at least the classification function includes a plurality of one or more criteria, the plurality of one or more criteria including at least one of topological proximity and administrative policy, wherein the topological proximity includes one or more of adjacency and dependency, and the administrative policy includes one or more of address aggregation and user-defined policy.
9. The method of claim 8, wherein the plurality of one or more criteria includes at least topological proximity, wherein the topological proximity includes one or more of adjacency and dependency.
10. The method of claim 8, wherein the plurality of one or more criteria includes at least administrative policy, wherein the administrative policy includes one or more of address aggregation and user-defined policy.
11. The method of claim 1, wherein, after the populating, the plurality of one or more groups includes a group, the group including network addresses corresponding to the plurality of one or more metrics having a value in a predefined range.
12. The method of claim 1, wherein, after the populating, the plurality of one or more groups includes clusters created by a clustering algorithm applied to at least one of the plurality of one or more metrics.
13. The method of claim 1, wherein the selecting, the creating, and the classifying are performed at a central server in an autonomous system.
14. The method of claim 1, wherein the selecting, the creating, and the classifying are performed at a plurality of one or more distributed servers distributed through a plurality of one or more autonomous systems.
15. The method of claim 1, wherein the selecting, creating, and populating are repeated, at least partly responsive to one or more of: a change in the at least one of the plurality of one or more metrics, an expiration of a time period, and an external input.
16. The method of 15, wherein the selecting, creating, and populating are repeated, at least partly responsive to the change in the at least one of the one or more metrics.
17. The method of 15, wherein the selecting, creating, and populating are repeated, at least partly responsive to the expiration of a time period.
18. The method of 15, wherein the selecting, creating, and populating are repeated, at least partly responsive to the external input.
19. The method of 15, wherein, prior to the change, a first plurality of one or more groups is populated, and after the change, a second plurality of one or more groups is populated, and the first plurality of one or more groups is at least partly different from the second plurality of one or more groups.
20. The method of claim 1, further comprising:

prior to populating the plurality of groups, creating a default population for at least one of the plurality of one or more groups, wherein the default population is derived at least partly from an observed routing table.
21. The method of claim 20, wherein the observed routing table is from an autonomous system, such that each of the plurality of network addresses is reachable by the autonomous system.
22. The method of claim 20, wherein the default population is a subset of the observed routing are performed on an existing routing table.
23. The method of claim 22, wherein after selecting, creating, and populating are performed on the existing routing table, any changes to the existing routing table are limited to combining two or more entries into one group.
24. The method of claim 22, wherein after selecting, creating, and populating are performed on the existing routing table, changes to the existing routing table include dividing at least one entry into two or more groups.
25. The method of claim 1, further comprising:

prior to populating the plurality of groups, creating a default population for at least one of the plurality of one or more groups, wherein the default population is derived at least partly from observed network traffic.
26. The method of claim 1, wherein the selecting, creating, and populating are performed in a first autonomous system.
27. The method of claim 26, further comprising : prior to populating the plurality of groups, creating a default population for at least one of the plurality of one or more groups, wherein the default population is derived at least partly from an observed routing table.
28. The method of 26, wherein the observed routing table is from the first autonomous system.
29. The method of 26, wherein the observed routing table is from a second autonomous system.
30. The method of claim 1, wherein at least one subset of the plurality of one or more groups includes contiguous addresses.
31. The method of claim 1, wherein at least one subset of the plurality of one or more groups includes at least two discontiguous addresses.
32. The method of claim 1, where the plurality of one or more network addresses includes one or more IP addresses.
33. A network system, comprising:

a plurality of one or more network devices, the plurality of network devices including one or more of servers, forwarding devices, and routing devices, the plurality of network devices populating a plurality of one or more groups with a plurality of one or more network addresses by performing:

responsive to 1) selecting a plurality of one or more metrics, the plurality of one or more metrics including one or more of path performance, network cost, network usage, geographical proximity, topological proximity, and statistical similarity, and 2) creating the plurality of one or more groups in one or more network devices, network devices including one or more of servers, forwarding devices, and routing devices;

populating each of the plurality of one or more groups with a subset of the plurality of one or more network addresses based on at least a classification function, the classification function at least partly determined by at least one of the plurality of one or more metrics;

and including one or more network addresses from one or more groups of the plurality of one or more groups in a plurality of one or more routing tables distributed across the internetwork.
34. A network system, comprising:

a plurality of one or more network devices, the plurality of network devices including one or more of servers, forwarding devices, and routing devices, the plurality of network devices populating a plurality of one or more groups with a plurality of one or more network addresses by performing:

selecting a plurality of one or more metrics, the plurality of one or more metrics including one or more of path performance, network cost, network usage, geographical proximity, topological proximity, and statistical similarity;

creating the plurality of one or more groups in one or more network devices, network devices including one or more of servers, forwarding devices, and routing devices;

populating each of the plurality of one or more groups with a subset of the plurality of one or more network addresses based on at least a classification function, the classification function at least partly determined by at least one of the plurality of one or more metrics;

and including one or more network addresses from one or more groups of the plurality of one or more groups in a plurality of one or more routing tables distributed across the internetwork.
35. A network system, comprising:

a plurality of one or more network devices, the plurality of network devices including one or more of servers, forwarding devices, and routing devices, the plurality of network devices populating a plurality of one or more groups with a plurality of one or more network addresses by performing:

responsive to selecting a plurality of one or more metrics, the plurality of one or more metrics including one or more of path performance, network cost, network usage, geographical proximity, topological proximity, and statistical similarity;

creating the plurality of one or more groups in one or more network devices, network devices including one or more of servers, forwarding devices, and routing devices;

populating each of the plurality of one or more groups with a subset of the plurality of one or more network addresses based on at least a classification function, the classification function at least partly determined by at least one of the plurality of one or more metrics; and including one or more network addresses from one or more groups of the plurality of one or more groups in a plurality of one or more routing tables distributed across the internetwork.
36. A network system, comprising:

a plurality of one or more network devices, the plurality of network devices including one or more of servers, forwarding devices, and routing devices, the plurality of network devices populating a plurality of one or more groups with a plurality of one or more network addresses by performing:

selecting a plurality of one or more metrics, the plurality of one or more metrics including one or more of path performance, network cost, network usage, geographical proximity, topological proximity, and statistical similarity;

responsive to creating the plurality of one or more groups in one or more network devices, network devices including one or more of servers, forwarding devices, and routing devices;

populating each of the plurality of one or more groups with a subset of the plurality of one or more network addresses based on at least a classification function, the classification function at least partly determined by at least one of the plurality of one or more metrics; and
CA2637743A 2000-10-17 2001-10-17 Method and apparatus for the assessment and optimization of network traffic Expired - Fee Related CA2637743C (en)

Applications Claiming Priority (13)

Application Number Priority Date Filing Date Title
US24145000P 2000-10-17 2000-10-17
US60/241,450 2000-10-17
US27520601P 2001-03-12 2001-03-12
US60/275,206 2001-03-12
US09/903,423 US7363367B2 (en) 2000-10-17 2001-07-10 Systems and methods for robust, real-time measurement of network performance
US09/903,423 2001-07-10
US09/903,441 US7080161B2 (en) 2000-10-17 2001-07-10 Routing information exchange
US09/903,441 2001-07-10
US09/923,924 US7406539B2 (en) 2000-10-17 2001-08-06 Method and apparatus for performance and cost optimization in an internetwork
US09/923,924 2001-08-06
US09/960,623 2001-09-20
US09/960,623 US7349994B2 (en) 2000-10-17 2001-09-20 Method and apparatus for coordinating routing parameters via a back-channel communication medium
CA002424680A CA2424680C (en) 2000-10-17 2001-10-17 Method and apparatus for the assessment and optimization of network traffic

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002424680A Division CA2424680C (en) 2000-10-17 2001-10-17 Method and apparatus for the assessment and optimization of network traffic

Publications (2)

Publication Number Publication Date
CA2637743A1 true CA2637743A1 (en) 2002-04-25
CA2637743C CA2637743C (en) 2012-08-21

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CA2637743A Expired - Fee Related CA2637743C (en) 2000-10-17 2001-10-17 Method and apparatus for the assessment and optimization of network traffic
CA002424680A Expired - Fee Related CA2424680C (en) 2000-10-17 2001-10-17 Method and apparatus for the assessment and optimization of network traffic

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CA002424680A Expired - Fee Related CA2424680C (en) 2000-10-17 2001-10-17 Method and apparatus for the assessment and optimization of network traffic

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US (2) US7349994B2 (en)
EP (1) EP1350363B1 (en)
AT (1) ATE522041T1 (en)
AU (4) AU2001294993A1 (en)
CA (2) CA2637743C (en)
IL (3) IL155356A0 (en)
WO (3) WO2002033915A1 (en)

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