The BGP Best Path Selection Algorithm #4: AS_PATH (Well-Known/Mandatory Attribute)

In this video tutorial we continue examining the BGP Best Path Selection Algorithm by looking at the 4th criteria: AS_PATH. This BGP Well-Known Mandatory BGP Path Attribute, which is communicated to eBGP peers in UPDATE messages, is used by default in BGP if none of the first three attributes are manipulated. Enjoy!