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Network topology discovery using BGP link state extensions

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bgp-ls

This project aims to expose network topology through Border Gateway Protocol (BGP) Link State extensions defined in draft-ietf-idr-ls-distribution.

This is built on top of a BGP daemon that connects to a BGP peer in the network. Topology is learnt via BGP extenions defined in the above draft. The daemon processed real-time topology updates and writes them in JSON format to a text file.

The core BGP daemon is taken from the open-source project rbieniek/BGP4J. The base project was modified to run as a standalone Java application and BGP Link state extensions were then added on top of it.

Currently the code is based off draft-ietf-idr-ls-distribution-01. It is not compatible with version -00 or -02 (and beyond).

This source is licensed under Apache 2.0.

Build environment:

This project requires a minimum of JavaSE-1.6.

It depends on the following libraries.

  • junit-3.8.1
  • quartz-2.1.6 (org.quartz-scheduler)
  • jackson-core-asl-1.9.12 (org.codehaus.jackson)
  • jackson-mapper-asl-1.9.12 (org.codehaus.jackson)
  • commons-lang3-3.1
  • logging-1.0.4
  • log4j-1.2.15
  • slf4j-api-1.7.2 (org.slf4j.api)
  • slf4j.log4j12-1.7.2 (org.slf4j.log4j12)
  • commons-configuration-1.9 (commons-configuration)
  • netty-3.6.3.Final
  • cli-1.0.0 (org.mod4j.org.apache.commons)
  • commons-lang-2.6
  • commons-logging-1.1.1

Dependencies can be directly obtained using maven pom file.

Runtime arguments

Required: -c

Optional: -l -e

See the config-samples directory, for a sample of config-file and log-config-file

If the argument is not provided, then topology data will not be exported to a file.

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