Description | This article explains how the BGP routes propagate, how different routes are manipulated, and what commands are used in these locations. |
Scope | FortiGate. |
Solution |
Below is a basic flow diagram of how BGP route propagation is done:
BGP router is receiving BGP routes from its neighbor 1.
config neighbor
Different commands are used in places in the flow chart. Commands in {A, B, C, D, E} locations on the diagram will be shown below.
[A] - get router info bgp neighbors <neighbor-IP> received-routes [B] - get router info bgp neighbors <neighbor-IP> routes [C] - get router info bgp network get router info bgp network <prefix> [D] - get router info bgp neighbors <neighbor-IP> advertised-routes [E] - get router info routing-table all get router info routing-table database get router info routing-table details <network>
Outputs of these commands can be seen from this related article: Technical Tip: Use case of a Local preference and AS path prepending for route manipulation in BGP |