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Scaled inter-domain metrics for link state protocols

A router and network technology, applied in the field of computer networks, can solve problems such as uneven deployment

Active Publication Date: 2017-12-29
JUMIPER NETWORKS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the uneven deployment of IGP in various IGP domains, using AIGP may inject various problems into the path selection process

Method used

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  • Scaled inter-domain metrics for link state protocols
  • Scaled inter-domain metrics for link state protocols
  • Scaled inter-domain metrics for link state protocols

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0108] Example 1. A method comprising: receiving, by a network device located on a boundary of a second interior gateway protocol (IGP) domain, link metrics assigned to links within a first IGP domain; scaling, by the network device, the metrics assigned to the the link metric of the link in the first IGP domain, so that the link metric assigned to the link in the first IGP domain is consistent with the metric scale of the second IGP domain; and through the The network device updates a representation of a topology of a network including the first IGP domain and the second IGP domain to include the scaled link metric.

example 2

[0109] Example 2. The method of example 1, further comprising: selecting, by the network device, a path through the network based on the updated representation of the topology of the network; and following the selected path, by the network device Forward network traffic.

example 3

[0110] Example 3. The method of example 1, wherein receiving the link metric comprises receiving an accumulated IGP (AIGP) attribute of the first IGP domain, the accumulated IGP attribute comprising The link metric for the link.

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Abstract

In general, techniques are described by which to provide a scaled end-to-end view of link metrics to integrate multiple non-uniform Interior Gateway Protocol (IGP) domains. For example, an Accumulated Interior Gateway Protocol (AIGP) attribute, a non-transitive BGP attribute, which includes a link metric assigned to a link within a first IGP domain, is scaled to conform to a metric scale of the second IGP domain. The AIGP attribute may also add link metric assigned to a link within the second IGP domain and may add static metrics of non-IGP links connecting the IGP domains. An IGP domain may set its IGP to the scaled AIGP attribute such that the link metric may include a uniformly scaled end-to-end view of link metrics across the IGP domains. Additionally, a sham-link is assigned a metric value in accordance with the scaling techniques.

Description

[0001] This application claims priority from Indian Patent Application 201641020463 filed on June 15, 2016, the entire contents of which are hereby incorporated by reference. technical field [0002] The technology of this disclosure relates to computer networks, and more particularly, to providing routing information in computer networks. Background technique [0003] A computer network is a collection of interconnected computing devices that exchange data and share resources. In packet-based networks, such as the Internet, computing devices communicate data by dividing the data into small chunks called packets, which are individually routed across the network from a source device to a destination device. The target device extracts the data from the packets and assembles the data into its original form. Certain devices in a network, known as routers, use routing protocols to exchange and accumulate topology information that describes the network. This allows the router to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/715H04L12/751H04L12/721H04L45/02
CPCH04L45/04H04L45/12H04L45/033H04L12/4633H04L45/02
Inventor 阿卜杜勒·马希德·安萨里史蒂文·M·肯斯尔博罗斯·拉达克里希纳·巴特施雷德哈·赫格德
Owner JUMIPER NETWORKS INC
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