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Questions tagged [igp]

For questions about IGPs (Interior Gateway Protocols), which are routing protocols used within an AS (Autonomous System).

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24 votes
7 answers
58k views

Why use iBGP inside an Autonomous System, if IGP protocols fulfill the need for internal communication

Can anyone explain why we need iBGP for the routes when we have the IGP protocols (OSPF, RIP) for internal communication within the AS? I have read a lot of articles and books, but I could not find ...
user2720323's user avatar
  • 1,611
10 votes
3 answers
27k views

OSPF or iBGP for interior routing protocol?

So the plan is, two core routers each with a eBGP session to one of two ISPs with full routes. Both routers publish their full tables to each other so they can control traffic flow more intelligently ...
OJS's user avatar
  • 343