Bgp_local_pref path depending

[mattia.milani at studenti.unitn.it]

Hello all, I’m writing this email because i was trying to create an input filter for my daemon.

Protocol: BGP
I would like to evaluate an input path and change the bgp preference if the path correspond to a certain path.

I configured a default bgp_local_pref with the command:
default bgp_local_pref 1;

And in the input filter I wrote a code like:
If bgp_path ~ [= * 1 2 3 =] then {
    bgp_local_pref = 100;
}

But this doesn’t seems to do the expected work, if the path finish with 1 2 3 no matter how much it is long I would like to prefer it over other paths.

If anyone can suggest me how to handle it thanks,
Mattia