BGP - Loop Prevention

Border Gateway Protocol (BGP) has several built-in loop prevention mechanisms that help to safeguard the routing protocol from routing loops. Some apply to eBGP while others to iBGP. The following is a list of features of BGP that help to prevent routing loops:

• BGP - eBGP loop prevention mechanism same AS number
• BGP - iBGP full-mesh peering
• BGP - iBGP split horizon rule
• BGP Cluster ID
• BGP Next Hop Address Tracking