when should distance vector switch to LSA?

I'm currently taken a routing class now and I'm having problems trying to research on at what point should distance vector protocol be switch over using LSA.
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Steve JenningsSr Manager Cloud Networking OpsCommented:
I can't quite make sense of your question. "LSA" is a link state advertisement in OSPF . . . are you asking when you should use a link state protocol vs a distance vector protocol? Or are you asking when any one of the 11 types of LSA are used or initiated?

Good luck,
fearlessincAuthor Commented:
Sorry for the confusion, when you should use a link state protocol vs a distance vector protocol is what I meant to ask.
Steve JenningsSr Manager Cloud Networking OpsCommented:
Take a look at this simple site . . .


Basically, if all the links on your network are the same speed and you have a relatively simple topology then a distance vector protocol works fine. . . RIP or RIPv2 are distance vector protocols. RIP doesn't provide variable length subnet adressing so virtually nobody uses it any more. RIP2 uses variable length subnets but it's not used much either because EIGRP (Cisco world, a sort of distance vector  - link state hybrid) and OSPF / BGP provide much greater granularity and control over network routing.

Good luck,

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