AS Path
Indicate path back to the route source and prevents routing loops.
BGP
Border Gateway Protocol implementation and best practices
Local Preference
The Power of Local Preference. The first BGP attribute used to favor one route over another.
BGP Attributes
BGP uses different attributes to control the advertisement and influence path selection
Route Selection
How to influance the route selection with the approptiate attributes.
Finite State Machine
This article explains the different states during the BGP neighbor negotiation