[c-nsp] EIGRP vs BGP route selection

[Uddin, Tahir]

Hi All,

I am summarizing an issue I am seeing, wondering if anyone might have
some input on this.

In the following topology, I have a floating static route (distance 250)
redistributed into EIGRP on R1 which sends the redistributed route to R2
which sends it to R3. R4 sees the EIGRP route from R3 and an EBGP route
from R4. I would have thought that R3 would pick the EBGP route since
EBGP as a protocol has a admin distance of 20 as opposed to the EIGRP
admin distance of 170 but I see the EIGRP route in the routing table of
R3. Based on TACs recommendation, we ended up using a route map that
applies a higher weight to the EBGP route to make it more preferable.
Shouldn't R3 use the EBGP route by default because it has lower admin
distance compared to redistributed EIGRP.

 

                                    Static                EIGRP
EIGRP              EBGP

10.10.10.0/24
-------------------------R1------------------------R2-------------------
-R3------------------------R4-----------10.10.10.0/24

 

Thanks

 

 


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