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BGP » Historique » Version 169

Laurent GUERBY, 22/07/2015 19:22

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{{>toc}}
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h1. BGP
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Nous utilisons BIRD sous Linux comme routeur BGP
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http://bird.network.cz/
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blog bgp http://www.renesys.com/blog/
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flowspec http://www.slideshare.net/sfouant/an-introduction-to-bgp-flow-spec
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DFZ = Default Free Zone archive http://archive.routeviews.org/
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http://www.ripe.net/data-tools/stats/ris/routing-information-service
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https://stat.ripe.net/widget/announced-prefixes
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http://pch.net/resources/data/routing-tables/archive/
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http://pch.net/resources/data/routing-tables/mrt-bgp-updates/
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http://www.nanog.org/meetings/archive/
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http://tools.ietf.org/html/draft-lapukhov-bgp-routing-large-dc-02
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http://inside.godaddy.com/inside-story-happened-godaddy-com-sept-10-2012/
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liste des communautés des opérateurs http://onesc.net/communities/ via http://www.bortzmeyer.org/7153.html
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http://tools.ietf.org/html/rfc4271#section-9.1 BGP route decision process
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http://www.ipbcop.org/
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IP Best Current Operational Practices Documented best practices for Engineers by Engineers
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BGP best practices ANSSI
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https://www.sstic.org/media/SSTIC2012/SSTIC-actes/influence_des_bonnes_pratiques_sur_les_incidents_b/SSTIC2012-Article-influence_des_bonnes_pratiques_sur_les_incidents_bgp-contat_valadon_nataf_2.pdf
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http://www.ssi.gouv.fr/fr/bonnes-pratiques/recommandations-et-guides/securite-des-reseaux/le-guide-des-bonnes-pratiques-de-configuration-de-bgp.html
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http://tools.ietf.org/html/draft-ietf-opsec-bgp-security-01
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https://www.ams-ix.net/technical/specifications-descriptions/ams-ix-route-servers
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these LAAS BGP http://www.laas.fr/1-31360-Detail-Soutenance-de-these.php?id=600
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http://www.laas.fr/1-31706-Publications.php?author=7738
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http://www.net.t-labs.tu-berlin.de/papers/OMUPMO-OOSICP-11.pdf
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http://hal.archives-ouvertes.fr/docs/00/60/53/83/PDF/dVirt-virtual_platform.pdf
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http://hal.archives-ouvertes.fr/docs/00/48/70/74/PDF/Poster_SIGCOMM2010_philippe.pdf
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Le monde sur BGP http://reseaux.blog.lemonde.fr/2012/11/04/routage-enjeu-cyberstrategie/
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coupure free wanadoo http://www.journaldunet.com/solutions/0301/030122_freeft.shtml
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tsunami Japon 2011 et BGP : http://archive.psg.com/111206.conext-quake.pdf
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Session is up on telnet:route-views.routeviews.org username rviews
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BGP book http://www.bortzmeyer.org/files/bgp.html
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Cyclops is able to detect several forms of route hijack attacks http://cyclops.cs.ucla.edu/
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BGPmon monitors the routing of your prefixes and alerts you in case of an 'interesting' path chang http://www.bgpmon.net/
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http://jointtransit.nl/prices.html
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http://blog.cloudflare.com/the-ddos-that-knocked-spamhaus-offline-and-ho
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* taille table de routage http://bgp.potaroo.net/
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* BGP	in	2011	 Geoff	Huston	 APNIC http://iepg.org/2011-11-ietf82/2011-11-13-bgp2011.pdf
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* http://pages.cs.wisc.edu/~plonka/netgear-sntp/
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* http://www.afnic.fr/fr/l-afnic-en-bref/actualites/actualites-generales/7114/show/l-observatoire-sur-la-resilience-de-l-internet-francais-publie-son-rapport-2012.html
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* http://www.ris.ripe.net/dashboard/2a01:6600:8000::/40
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* http://www.bortzmeyer.org/6996.html
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** RFC 6996 : Autonomous System (AS) Reservation for Private Use
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** http://www.iana.org/assignments/as-numbers
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* Look for TRACEROUTE by SRCGUARDIAN in the Play Store.   It needs network access only...  Doesn't do TCP but does ICMP and UDP traceroutes and displays ASN as well ...
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* http://www.team-cymru.org/Services/Bogons/bgp.html
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** http://www.team-cymru.org/Services/Bogons/bgp-examples.html#bird-full
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h1. TouIX et GIX
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http://touix.net
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http://wikilulu.net/doku.php?id=articles:gix-howto
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h1. Evolutions de la conf BGP
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* http://lists.tetaneutral.net/pipermail/technique/2011-December/000118.html
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TODO: 
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* mise en place d'un gestionaire de version style git au moins pour documentation
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* Comment gerer les password MD5 du fichier de conf (les garder secrets tout en publiant le reste)
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* Atelier ?
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** Solarus
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** Ajouter son nom...
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Alternative a MP BGP
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http://tools.ietf.org/html/draft-ietf-idr-bgp-multisession-06
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Add Path
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http://tools.ietf.org/html/draft-ietf-idr-add-paths-07
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support in bird ? http://marc.info/?l=bird-users&m=134409996129466&w=2
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h1. Liens
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* http://www.cl.cam.ac.uk/~tgg22/talks/BGP_TUTORIAL_ICNP_2002.ppt
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* http://www.menog.net/menog-meetings/menog5/presentations/smith-32bit-asn-update.pdf
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* AS4 http://www.rfc-editor.org/rfc/rfc4893.txt
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* bonnes pratiques incidents BGP
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** https://www.sstic.org/media/SSTIC2012/SSTIC-actes/influence_des_bonnes_pratiques_sur_les_incidents_b/SSTIC2012-Slides-influence_des_bonnes_pratiques_sur_les_incidents_bgp-contat_valadon_nataf.pdf
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* test ping plus UDP http://www.broadband-forum.org/technical/download/TR-143.pdf
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h1. Configuration Toulouse
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<pre>
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router id 91.224.148.2;
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define myas = 197422;
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protocol device {
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	scan time 10;
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        primary "eth0" 91.224.148.3;
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}
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protocol static static_bgp {
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	import all;
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	route 91.224.148.0/23 reject;
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}
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protocol kernel{
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	import all;
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	export all;
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}
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function avoid_martians()
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prefix set martians;
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{
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  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+ ];
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  # Avoid 0.0.0.0/X
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  if net.ip = 0.0.0.0 then return false;
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  # Avoid too short and too long prefixes
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  if (net.len < 8) || (net.len > 24) then return false;
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  # Avoid RFC1918 networks
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  if net ~ martians then return false;
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  return true;
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}
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filter bgp_OUT {
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	if (net ~ [91.224.148.0/23]) then accept;
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	else reject;
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}
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protocol bgp TOUIX {
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        local as myas;
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        neighbor 91.213.236.1 as 47184;
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        preference 200;
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        import where avoid_martians();
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        export filter bgp_OUT;
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}
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protocol bgp JAGUAR {
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	 local as myas;
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	 neighbor 31.172.233.1 as 30781;
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	 preference 50;
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         import where avoid_martians();
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         export filter bgp_OUT;
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}
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protocol bgp TETANEUTRAL {
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	local as myas;
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	neighbor 91.224.148.2 as myas;
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	preference 100;
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	import where avoid_martians();
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	export all;
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}
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</pre>
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h1. IRR
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* From nanog:
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http://www.clarksys.com/blog/2009/09/02/using-irr-with-level3/
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whois -h filtergen.level3.net "RIPE::YOUR-AS-SET  -searchpath=RIPE;ARIN;RADB -recurseok -warnonly"
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h1. Blackholing
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h2. DECIX
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http://de-cix.net/products-services/de-cix-frankfurt/blackholing/
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h2. Attaques
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* 20120629 http://lists.tetaneutral.net/pipermail/technique/2012-July/000406.html
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* http://blog.cloudflare.com/65gbps-ddos-no-problem
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h2. URPF
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blacklister une/plusieures sources est relativement complexe à mettre en place sur une petite infrastructure car nécessite la mise en place de l'URPF (Unicast Reverse Path Forwarding).
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http://www.cisco.com/web/about/security/intelligence/ipv6_rtbh.html
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h2. RFC3882 
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* http://www.ietf.org/rfc/rfc3882.txt
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community AS:666 sur annonce /32 pour balckhole par AS upstream
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* doc CISCO
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http://www.cisco.com/web/about/security/intelligence/blackhole.pdf
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h2. RFC1997
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* http://www.ietf.org/rfc/rfc1997.txt
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BGP Communities Attribute
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* doc CISCO
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http://www.cisco.com/web/about/ac123/ac147/archived_issues/ipj_6-2/bgp_communities.html
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h2. BIRD
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* http://www.mail-archive.com/bird-users@atrey.karlin.mff.cuni.cz/msg01998.html
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h2. Absolight
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* communauté 29608:65001 sur /24..32 IPv4 et /41..128 IPv6 => blackhole
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* test 20120703 IPv4 et IPv6, ça marche et convergence très rapide
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h2. GIXE
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* communauté 31576:666 sur /32 => blackhole
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* test 20120703 => marche pas encore, signalé et dev a faire coté GIXE pour autoriser les /32
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h2. Jaguar 
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* https://extranet.jaguar-network.com/app/public/index.php?cmd=bgp-policy
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* demande 20120702 : pas de communauté blackhole actuellement, en reflexion
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* déploiement de matériel arbor networks, reglage a affiner (pas de detection d'attaque)
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h2. Gitoyen
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* demande 20120704 sur la liste, réponse 20120717
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* Tata http://noc.easycolocate.nl/Teleglobe_bgp_comm.pdf
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*** => black-hole route (host route or shorter prefix within customer’s RIR registred assignment) 64999:0
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* Ielo  whois AS29075 => 29075:0 Null-route/Blackhole
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* https://pad.ilico.org/p/cleanup-bgp-gitoyen
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h2. France-IX
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* community plan : https://apps.db.ripe.net/whois/lookup/ripe/aut-num/AS51706.html
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* TODO tester
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h2. Equinix-IX
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* community plan : https://ix.equinix.com/ixp/mlpeCommunityInfo
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* TODO tester
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h2. TouIX
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* demande acces switch et route server 20120702
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* TODO
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h2. Hurricane Electric
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* http://www.he.net/adm/
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* http://www.he.net/adm/blackhole.html
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* TODO tester
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h2. Sfinx
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* http://www.renater.fr/route-servers-bgp?lang=fr
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* whois  AS1304 =>
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remarks:        1304:65281 = Apply NO-EXPORT community
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remarks:        1304:65282 = Apply NO-ADVERTISE community
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h2. Cogent
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h3. Docs
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* http://www.cogentco.com/files/docs/customer_service/guide/global_cogent_customer_user_guide.pdf
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** communautés page 21-22
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* http://www.onesc.net/communities/as174/
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* https://www.nanog.org/meetings/nanog45/presentations/Sunday/RAS_traceroute_N45.pdf
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France / Benelux:
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+33 1 49 03 1818 (Hotline)
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+33 1 49 03 1803 (fax)
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fr-support@cogentco.com (maintenance and repair)
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bnl-support@cogentco.com (maintenance and repair))
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billingeu@cogentco.com (billing, customer care)
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All Customers in Europe can also contact the European Cogent Customer Support team
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using the generic email address for Europe: eu-support@cogentco.com 
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Livré comme demandé sur rocade optique Fullsave :
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Livré sur TLS01.CB.KD-05/A.To02.03&04 (tiroir optique N°2, fibre 03&04).
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Cogent physical port te0/0/2/3-rcr11.tls01
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Order ID/Service ID: 1-166108500
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Service Type: EU_L3_ON_10GE_BURST
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Commitment: 1000.0 MBps
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Service Address: 125 bis ch du Sang de Serp
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livraison dans baie Fullsave / salle LAP Te0/0/2/3 rcr01.tls01 -- > TLS01.CB.KD-05/A.To02.03&04
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Toulouse, FR France 31000
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Your service acceptance date is 27-May-2014 and your billing start date is 27-May-2014
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Order ID/Service ID: 1-166108524
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Service Type: EU_L3_ON_IPV6DSTACK_FLAT
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Commitment: 0.0 MBps
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Service Address: 125 bis ch du Sang de Serp
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IPv6s fort port order 1-166108500
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Toulouse, FR France 31000
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Your service acceptance date is 27-May-2014 and your billing start date is 27-May-2014
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Order ID/Service ID: 1-166108512
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Service Type: EU_L0_ON_XCFIBER_FLAT
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Commitment: 0.0 MBps
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Service Address: 125 bis ch du Sang de Serp
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Te0/0/2/3 rcr01.tls01 -- > TLS01.CB.KD-05/A.To02.03&04 port order 1-166108500
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Toulouse, FR France 31000
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Your service acceptance date is 27-May-2014 and your billing start date is 27-May-2014
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h3. Config initiale BGP Cogent
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<pre>
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root@h7:~# cat /etc/bird/bird.conf
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router id 149.11.58.74;
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define myas = 197422;
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timeformat base     iso long;
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timeformat log      iso long;
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timeformat protocol iso long;
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timeformat route    iso long;
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log "/var/log/bird/bird-20140527.log" all;
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debug commands 2;
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debug protocols { states, events };
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protocol device {
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        scan time 10;
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}
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protocol kernel {
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        import all;
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        export all;
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        learn;
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}
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filter bgp_OUT {
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        if (net ~ [91.224.148.0/23, 80.67.182.0/24, 89.234.156.0/23]) then {
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          accept;
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        }
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        reject;
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}
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filter bgp_IN_PEERING {
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       accept;
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}
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protocol bgp COGENT_TLS00 {
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        local as myas;
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        neighbor 149.11.58.73 as 174;
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        import filter bgp_IN_PEERING;
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        export filter bgp_OUT;
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}
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root@h7:~# cat /etc/bird/bird6.conf
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router id 149.11.58.74;
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define myas = 197422;
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timeformat base     iso long;
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timeformat log      iso long;
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timeformat protocol iso long;
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timeformat route    iso long;
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log "/var/log/bird/bird6-20140527.log" all;
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debug commands 2;
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debug protocols { states, events };
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listen bgp v6only;
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protocol device {
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        scan time 10;
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}
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protocol kernel {
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        import all;
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        export all;
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        learn;
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}
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filter bgp_OUT_6 {
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        if (net ~ [2a01:6600:8000::/40]) then {
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          accept;
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        }
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        reject;
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}
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filter bgp_IN_PEERING_6 {
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       accept;
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}
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protocol bgp COGENT_TLS00_6 {
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        local as myas;
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        neighbor 2001:978:2:68::8:1 as 174;
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        import filter bgp_IN_PEERING_6;
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        export filter bgp_OUT_6;
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}
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</pre>