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Load balancing network traffic on a label switched path using resource reservation protocol RSVP with traffic engineering TE

A load balancing and network traffic technology, applied in the field of computer networks, can solve problems such as loss and congestion, achieve the effect of effective available bandwidth and improve network resilience

Active Publication Date: 2010-08-25
JUMIPER NETWORKS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As networks grow in size and complexity, the traffic on any given link can approach the link's maximum bandwidth capacity, causing congestion and loss

Method used

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  • Load balancing network traffic on a label switched path using resource reservation protocol RSVP with traffic engineering TE
  • Load balancing network traffic on a label switched path using resource reservation protocol RSVP with traffic engineering TE
  • Load balancing network traffic on a label switched path using resource reservation protocol RSVP with traffic engineering TE

Examples

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Embodiment Construction

[0027] 1 is a block diagram illustrating a system 10 that includes an exemplary computer network 14 with a load-balancing traffic engineering tunnel 16 established over the network 14 between an ingress router 12A and an egress router 12 . For example, tunnel 16 may include a Resource Reservation Protocol based on Traffic Engineering Extensions (RSVP-TE) Label Switched Path (LSP). In the example of FIG. 1, routers 12A-12F ("routers 12") use the modified RSVP-TE protocol that has been extended to establish load-balancing TE tunnel 16 extending from ingress router 12A to egress router 12B. When router 12 receives network traffic, tunnel 16 is configured on router 12 to allow router 12 to load balance traffic over subpaths 18A- 18H of tunnel 16 ("subpaths 18"). In this manner, tunnel 16 may be viewed as a point-to-point tunnel between a single ingress and a single egress, structured to include multiple intermediate sub-paths for effectively load balancing MPLS traffic associated ...

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Abstract

Techniques are described for establishing an overall label switched path (LSP) for load balancing network traffic being sent across a network using the a resource reservation protocol such as Resource Reservation Protocol with Traffic Engineering (RSVP-TE). The techniques include extensions to the RSVP-TE protocol that enable a router to send Path messages for establishing a tunnel that includes a plurality of sub-paths for the overall LSP. The tunnel may comprise a single RSVP-TE Label Switched Path (LSP) that is configured to load balance network traffic across different sub-paths of the RSVP-TE LSP over the network.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 61 / 155,356, filed February 25, 2009, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to computer networks, and more particularly, to traffic management within computer networks. Background technique [0004] The term "link" is often used to refer to the connection between two devices in a computer network. A link can be a physical medium such as copper wire, coaxial cable, any number of different optical fibers, or a wireless connection. Additionally, network devices can define "virtual" or "logical" links and map virtual links to physical links. As networks grow in size and complexity, the traffic on any given link can approach the link's maximum bandwidth capacity, causing congestion and loss. [0005] Multiprotocol Label Switching (MPLS) is a mechanism for managing traffi...

Claims

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Application Information

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IPC IPC(8): H04L12/56
CPCH04L47/726H04L12/5695H04L45/50H04L47/724H04L47/125H04L45/125H04L45/745H04L47/70
Inventor 基里蒂·康佩拉
Owner JUMIPER NETWORKS INC
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