Chapter 2 Advanced Routing for FortiOS 5.0 : Routing Information Protocol (RIP) : RIP background and concepts : Parts and terminology of RIP
  
Parts and terminology of RIP
Before you can understand how RIP functions, you need to understand some of the main concepts and parts of RIP.
This section includes:
RIP and IPv6
Default information originate option
Garbage, timeout, and update timers
Authentication and key-chain
Access Lists