BGP route selection
Ondrej Zajicek
santiago at crfreenet.org
Tue Apr 17 14:20:20 CEST 2018
On Tue, Apr 17, 2018 at 10:50:24AM +0000, Arvin Gan wrote:
> Hi,
> I notice that there is a description of route selection algorithm:
>
> The global best route selection algorithm is (roughly) as follows:
>
> * Preferences of the routes are compared.
> * Source protocol instance preferences are compared.
> * If source protocols are the same (e.g. BGP vs. BGP), the protocol's route selection algorithm is invoked.
> * If source protocols are different (e.g. BGP vs. OSPF), result of the algorithm is undefined.
> And I also notice that normally the configuration "Administrative
> Distance" that is mapped to preference under channel in bird is
> different between eBGP (default value 20) and iBGP (default value 200).
Hi
No, default value is 200 for both EBGP and IBGP. Where did you noticed 20?
--
Elen sila lumenn' omentielvo
Ondrej 'Santiago' Zajicek (email: santiago at crfreenet.org)
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"To err is human -- to blame it on a computer is even more so."
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