in the BGP decision process the fifth tiebreaker is the Origin PA, which is prefere IGP routes over EGP routes which are in turn prefered over incomplete routes. my question is how the BGP preferes the IGP like ( OSPF, EIGRP, RIP) over EGP like (EBGP) although EBGP is AD of 20 and the other IGP routing protocols have a higher AD numbers.
or i misunderstood the explanation of that attribute.
thank you very much for your clarification, i've read some documents for that topic and i found that EGP shouldn't occer today and is not even supported in current IOS versions. so the locally route injected that has ORIGIN code of i better than ORIGIN code of ?.
and also The origin is for electing a best route in the BGP table which has no thing to do with distance as you said.
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