Route reflectors help to reduce the number of IBGP sessions inside an AS. A route reflector forwards the routers learned from one peer to the other peers. If you configure route reflectors, you dont' need to create a full mesh IBGP network. All clients in a cluster only talck to route reflector to get sync routing updates. Route reflectors pass the routing updates to other route reflectors and border routers within the AS.

Explanation
BGP neighbor states and how they change:* Idle: Initial state* Connect: Waiting for a successful three-way TCP connection* Active: Unable to establish the TCP session* OpenSent: Waiting for an OPEN message from the peer* OpenConfirm: Waiting for the keepalive message from the peer* Established: Peers have successfully exchanged OPEN and keepalive messages

Explanation
Configuring IPS intelligenceStarting with FortiOS 5.2,intelligent-mode is a new adaptive detection method. This command is enabled the default and it means that the IPS engine will perform adaptive scanning so that, for some traffic, the FortiGate can quickly finish scanning and offload the traffic to NPU orkernel. It is a balanced method which could cover all known exploits. When disabled, the IPS engine scans every single byte.
config ips globalset intelligent-mode {enable|disable}