Projet

Général

Profil

BGP » Historique » Version 9

Raphaël Durand, 18/12/2011 22:51

1 1 Laurent GUERBY
h1. BGP
2 1 Laurent GUERBY
3 1 Laurent GUERBY
Nous utilisons BIRD sous Linux comme routeur BGP
4 1 Laurent GUERBY
5 1 Laurent GUERBY
http://bird.network.cz/
6 1 Laurent GUERBY
7 3 Laurent GUERBY
h1. Evolutions de la conf BGP
8 3 Laurent GUERBY
9 3 Laurent GUERBY
* http://lists.tetaneutral.net/pipermail/technique/2011-December/000118.html
10 3 Laurent GUERBY
11 5 Laurent GUERBY
TODO: 
12 6 Laurent GUERBY
* mise en place d'un gestionaire de version style git au moins pour documentation
13 5 Laurent GUERBY
* Comment gerer les password MD5 du fichier de conf (les garder secrets tout en publiant le reste)
14 5 Laurent GUERBY
* Atelier ?
15 7 Laurent GUERBY
** Laurent GUERBY
16 9 Raphaël Durand
** Solarus
17 4 Laurent GUERBY
18 2 Laurent GUERBY
h1. Liens
19 2 Laurent GUERBY
20 2 Laurent GUERBY
* http://www.cl.cam.ac.uk/~tgg22/talks/BGP_TUTORIAL_ICNP_2002.ppt
21 2 Laurent GUERBY
22 1 Laurent GUERBY
h1. Configuration Toulouse
23 1 Laurent GUERBY
24 1 Laurent GUERBY
<pre>
25 1 Laurent GUERBY
router id 91.224.148.2;
26 1 Laurent GUERBY
define myas = 197422;
27 1 Laurent GUERBY
28 1 Laurent GUERBY
29 1 Laurent GUERBY
protocol device {
30 1 Laurent GUERBY
	scan time 10;
31 1 Laurent GUERBY
        primary "eth0" 91.224.148.3;
32 1 Laurent GUERBY
}
33 1 Laurent GUERBY
34 1 Laurent GUERBY
protocol static static_bgp {
35 1 Laurent GUERBY
	import all;
36 1 Laurent GUERBY
	route 91.224.148.0/23 reject;
37 1 Laurent GUERBY
}
38 1 Laurent GUERBY
39 1 Laurent GUERBY
40 1 Laurent GUERBY
protocol kernel{
41 1 Laurent GUERBY
	import all;
42 1 Laurent GUERBY
	export all;
43 1 Laurent GUERBY
}
44 1 Laurent GUERBY
45 1 Laurent GUERBY
46 1 Laurent GUERBY
function avoid_martians()
47 1 Laurent GUERBY
prefix set martians;
48 1 Laurent GUERBY
{
49 1 Laurent GUERBY
  martians = [ 169.254.0.0/16+, 172.16.0.0/12+, 192.168.0.0/16+, 10.0.0.0/8+, 224.0.0.0/4+, 240.0.0.0/4+ ];
50 1 Laurent GUERBY
51 1 Laurent GUERBY
  # Avoid 0.0.0.0/X
52 1 Laurent GUERBY
  if net.ip = 0.0.0.0 then return false;
53 1 Laurent GUERBY
54 1 Laurent GUERBY
  # Avoid too short and too long prefixes
55 1 Laurent GUERBY
  if (net.len < 8) || (net.len > 24) then return false;
56 1 Laurent GUERBY
57 1 Laurent GUERBY
  # Avoid RFC1918 networks
58 1 Laurent GUERBY
  if net ~ martians then return false;
59 1 Laurent GUERBY
  return true;
60 1 Laurent GUERBY
}
61 1 Laurent GUERBY
62 1 Laurent GUERBY
filter bgp_OUT {
63 1 Laurent GUERBY
	if (net ~ [91.224.148.0/23]) then accept;
64 1 Laurent GUERBY
	else reject;
65 1 Laurent GUERBY
}
66 1 Laurent GUERBY
67 1 Laurent GUERBY
68 1 Laurent GUERBY
protocol bgp TOUIX {
69 1 Laurent GUERBY
        local as myas;
70 1 Laurent GUERBY
        neighbor 91.213.236.1 as 47184;
71 1 Laurent GUERBY
        preference 200;
72 1 Laurent GUERBY
        import where avoid_martians();
73 1 Laurent GUERBY
        export filter bgp_OUT;
74 1 Laurent GUERBY
}
75 1 Laurent GUERBY
76 1 Laurent GUERBY
protocol bgp JAGUAR {
77 1 Laurent GUERBY
	 local as myas;
78 1 Laurent GUERBY
	 neighbor 31.172.233.1 as 30781;
79 1 Laurent GUERBY
	 preference 50;
80 1 Laurent GUERBY
         import where avoid_martians();
81 1 Laurent GUERBY
         export filter bgp_OUT;
82 1 Laurent GUERBY
}
83 1 Laurent GUERBY
84 1 Laurent GUERBY
protocol bgp TETANEUTRAL {
85 1 Laurent GUERBY
	local as myas;
86 1 Laurent GUERBY
	neighbor 91.224.148.2 as myas;
87 1 Laurent GUERBY
	preference 100;
88 1 Laurent GUERBY
	import where avoid_martians();
89 1 Laurent GUERBY
	export all;
90 1 Laurent GUERBY
}
91 1 Laurent GUERBY
</pre>