BGP Best Current Practices

5/8/06


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Table of Contents

BGP Best Current Practices

What is BGP for??

BGP versus OSPF/ISIS

BGP versus OSPF/ISIS

BGP/IGP model used in ISP networks

BGP versus OSPF/ISIS

Aggregation

Aggregation

Configuring Aggregation: Cisco IOS

Aggregation

Announcing Aggregate: Cisco IOS

Announcing an Aggregate

The Internet Today (May 2006)

Efforts to Improve Aggregation: The CIDR Report

Efforts to Improve Aggregation: The CIDR Report

Aggregation Potential

Aggregation: Summary

Receiving Prefixes

Receiving Prefixes from downstream peers

Receiving Prefixes: Cisco IOS

Receiving Prefixes from upstream peers

Receiving Prefixes from upstream peers

Receiving Prefixes from upstream peers

Receiving Prefixes from upstream peers

Receiving Prefixes

Generic ISP BGP prefix filter

Prefixes into iBGP

Injecting prefixes into iBGP

Router configuration: network statement

Injecting prefixes into iBGP

Router Configuration: redistribute static

Injecting prefixes into iBGP

Configuration Tips

Templates

BGP Template – iBGP peers

BGP Template – iBGP peers

BGP Template – eBGP peers

BGP Template – eBGP peers

More BGP “defaults”

Configuration Tips Summary

Summary – BGP BCP

Author: Philip Smith

Home Page: http://www.ws.afnog.org

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