User Tools

Site Tools


informatique:cisco:bgp

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
informatique:cisco:bgp [2012/07/12 15:09]
pteu [Load Sharing]
informatique:cisco:bgp [2013/10/14 22:44] (current)
Line 75: Line 75:
   network 10.10.10.0 mask 255.255.255.0   network 10.10.10.0 mask 255.255.255.0
  
 +=====Détermination du meilleur chemin=====
 +cf : BGP Best Path Selection Algorithm
  
 +  * highest WEIGHT : c'est un paramètre propriétaire Cisco, pas toujours/​souvent utilisé
 +  * highest LOCAL_PREF : par défaut = 100
 +  * locally originated via a //network// or //​aggregate//​ BGP subcommand or through redistribution from an IGP
 +  * shortest AS_PATH
 +  * lowest origin type (IGP < EGP < INCOMPLETE)
 +  * lowest multi-exit discriminator (MED) : uniquement si les next-hop appartiennent au même AS
 +  * prefer eBGP over iBGP paths
 +  * path with the lowest IGP metric to the BGP next hop
 +  * When both paths are external, prefer the path that was received first (the oldest one)
 +  * Prefer the route that comes from the BGP router with the lowest router ID
 +  * Prefer the path that comes from the lowest neighbor address.
 =====Configuration avancée===== =====Configuration avancée=====
  
informatique/cisco/bgp.txt · Last modified: 2013/10/14 22:44 (external edit)