Is RIPv1 used by Autonomous Systems such as ISPs?

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I'm preparing for the Network+ and read some facts that I'd like to clear up:

If I understood correctly:
- RIP is a Distance Vector dynamic routing protocol intended for small networks with routers no more than 15 hops away.
- Even the most basic basic Distance-Vector protocols like RIPv1 (the first version of RIP) can be used as IGP (interior gateway protocol) in Autonomous Systems.
...that's my confusion, if Distance Vector is intended for small networks, how can they be used as Interior gateway protocol in Autonomous Systems (such as ISPs) which are very large networks?

Any clarification much appreciated

 

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RIP isn't used by anyone any more, everything support OSPF so that's kind of universal for IGP.
I think you may have gotten confused between IGP and BGP there?

 

I guess it's not used nowadays, but COMPTIA Network+ considers RIP an Interior Gateway Protocol:

Here's a paragraph from COMPTIA Network+ training:

...The easy way to keep these terms separate is to appreciate that although many protocols are used within Autonomous Systems, such as RIP, the Internet has settled on one protocol for communication between each AS: the Border Gateway Protocol (BGP).

 

Autonomous System as a concept is just "network I control", versus networks other people control. Interior protocols are the ones you use inside the networks you control. Exterior protocols operate between many networks controlled by many people.

If you tried to use RIP as an exterior protocol, the internet would need to be an awful lot smaller. If you use BGP as an interior protocol, your LAN needs to be pretty complicated to justify the effort.

 

Super Thanks for your answer, quite clarifying!

 

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