| Table of ContentsBGP 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 |