BGP metrics

BGP Numbers

Advertised Distance: eBGP = 20: This is better than any other dynamic routing protocol
Advertised Distance: iBGP = 200: This is worth than any other dynamic routing protocol

iBGP Time-To-Live = 255
eBGP Time-To-Live = 1: The next hop must be connected or use neighbor x.x.x.x ebgp-multi-hop.