Link to this headingBorder Gateway Protocol (BGP)

• Uses unique IDs called ASN given by their Regional Internet Registry.
• The ASN is used in their Peering

Link to this headingPeering Session

• Routers can advertise a list of network routes
  • Shares a list of the IP subnets that they own to other routers.
  • Used to make a graph of the least hops to each subnet