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bgp_communities_in_practice [2014/01/12 09:19]
samer
bgp_communities_in_practice [2018/11/06 14:27] (current)
samer
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 BGP communities enable to label prefixes announced by BGP in order to apply specific policies. Two good examples of using BGP communities in real networks are provided for [[https://​www.sprint.net/​index.php?​p=policy_bgp | Sprint]] and [[https://​services.renater.fr/​connectivite/​routage_d_adresses | RENATER]]. BGP communities enable to label prefixes announced by BGP in order to apply specific policies. Two good examples of using BGP communities in real networks are provided for [[https://​www.sprint.net/​index.php?​p=policy_bgp | Sprint]] and [[https://​services.renater.fr/​connectivite/​routage_d_adresses | RENATER]].
  
-Let us analyze the illustration ​above provided by RENATER to explain how to use communities on its network. A dual-connected client network identifies a primary link and a secondary or backup link toward RENATER. In the BGP prefix announcements,​ this network can use the community ''​2200:​610''​ on the primary link, and the community ''​2200:​590''​ on the backup link. RENATER applies specific policies in order to implement the primary/​backup behavior. A simple way to do this is described in the following:+Let us analyze the illustration ​below provided by RENATER to explain how to use communities on its network. A dual-connected client network identifies a primary link and a secondary or backup link toward RENATER. In the BGP prefix announcements,​ this network can use the community ''​2200:​610''​ on the primary link, and the community ''​2200:​590''​ on the backup link. RENATER applies specific policies in order to implement the primary/​backup behavior. A simple way to do this is described in the following:
  
 [{{ :​commbgp-1.png?​direct&​500 | Figure 1. BGP community illustration}}] [{{ :​commbgp-1.png?​direct&​500 | Figure 1. BGP community illustration}}]
bgp_communities_in_practice.txt ยท Last modified: 2018/11/06 14:27 by samer