Chapter 2 Advanced Routing for FortiOS 5.0 : Border Gateway Protocol (BGP) : BGP background and concepts : Parts and terminology of BGP
  
Parts and terminology of BGP
In a BGP network, there are some terms that need to be explained before going ahead. Some parts of BGP are not explained here as they are common to other dynamic routing protocols as well. When determining your network topology, note that the number of available or supported routes is not set by the configuration but depends on your FortiGate’s available memory. For more information on parts of BGP that are not listed here, see “Dynamic routing terminology”.