[j-nsp] BGP selection

Johan Borch johan.borch at gmail.com
Wed Sep 4 16:10:58 EDT 2013


Hi list!

Lets say that I have three routers.

Router1: receives a full table from ISP X
Router2: No eBGP
Router3: receives a full table from ISP Y

R1 and R2 is connected via MPLS/L3VPN
R1 and R3 is connected via fiber
R2 and R3 is connected via fiber

iBGP i used between R1-R3 and R2-R3.

R1 divides the prefixes fine between it's own transit and the transit from
R3

My problem is with R2 that received tables both from R1 and R2 but it
prefer to make altmost everything active from R3 due to "Inactive reason:
IGP metric". the L3VPN adds 1 to the metric2 value due to the L3VPN. Is
there some way around this IGP-metric?

Regards
Johan


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