Class-based traffic engineering in IP network

An IP network and category technology, applied in the field of computer networks, can solve problems such as traffic engineering hardware requirements or hardware limitations

Active Publication Date: 2020-12-22
JUMIPER NETWORKS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this traffic engineering mechanism has hardware requirements or

Method used

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  • Class-based traffic engineering in IP network
  • Class-based traffic engineering in IP network
  • Class-based traffic engineering in IP network

Examples

Experimental program
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Embodiment Construction

[0019] figure 1 is a block diagram illustrating an example network system 2 in which network devices provide class-based traffic engineering in an Internet Protocol (IP) network in accordance with one or more aspects of the techniques described in this disclosure. exist figure 1 In an example, network 14 may include network devices, such as routers 12A-12F (collectively "routers 12"), to connect between one or more links (e.g., links 18A-18H (collectively "links 18") )) to establish one or more restricted paths.

[0020] In some examples, network 14 may be a service provider network. For example, network 14 may represent one or more networks owned and operated by a service provider (typically a private entity) that provide one or more services to customer networks 6A-6B (collectively "customer networks 6"). ) of customer or user consumption. In this case, network 14 is typically a Layer 3 (L3) packet-switched network that provides L3 connectivity between a public network (...

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Abstract

The invention relates to class-based traffic engineering in IP network. Techniques are described for class-based traffic engineering in an IP network. For example, routers of an IP network may establish one or more constrained traffic engineered paths using a link-state protocol (e.g., IGP) without using signaling protocols, such as RSVP or SPRING, or encapsulating packets over MPLS. For example,an egress router of the IP network may receive a capability message specifying the capability of routers to compute a constrained path to the egress router, wherein the capability message comprises path computation information including an identifier of a path computation algorithm to be used by the one or more of the plurality of network devices to reach the egress network device. The egress router may advertise a reachability message including a destination IP prefix and the identifier of the path computation algorithm to cause routers in the IP network to compute the constrained path to reach the egress router.

Description

[0001] This application claims the benefit of U.S. Provisional Patent Application No. 62 / 864,851, filed June 21, 2019, the entire contents of which are hereby incorporated by reference. technical field [0002] The present disclosure relates to computer networks, and more particularly, to engineering traffic within computer networks. Background technique [0003] A computer network is a collection of interconnected computing devices that exchange data and share resources. In a packet-based network (eg, the Internet), computing devices communicate data by dividing the data into small chunks called packets, which are individually routed through the network from a source device to a destination device. The destination device extracts the data from the packets and assembles the data into its original form. [0004] Certain devices in the network, called routers, use routing protocols to exchange and accumulate topological information describing the network. This allows the rou...

Claims

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Application Information

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IPC IPC(8): H04L12/721H04L12/723H04L45/50H04L47/724H04L47/80
CPCH04L45/38H04L45/50H04L45/302H04L47/724H04L47/80H04L45/124
Inventor 塔雷克·萨阿德拉文德拉·托维维什努·帕万·比拉姆
Owner JUMIPER NETWORKS INC
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