Internal BGP difference

There are 3 Internal BGP protocols, RIP, RIP2 and OSPF. This is about difference but this is a just memo.

How to detect route informations not owned by themselves

• RIP and RIP2 always advertise the route informations which they own
• OSPF receives the route informations from other routers and build network route tree.

How to detect other routers down

• RIP and RIP2 advertisement double as remote router's hello message
• OSPF sends hello message periodically

Which is difference between RIP and RIP2

• RIP is based on IP address class, but class is replaced with CIDR already
• RIP2 is based on CIDER