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MP-BGP Route Reflector

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In a scenario using MP-BGP route-reflectors for VPNv4 routes it is important to add the command 'undo policy vpn-target' to the route reflector:


bgp 345
 peer 10.0.1.3 as-number 345
 peer 10.0.1.3 connect-interface LoopBack0
 peer 10.0.1.4 as-number 345
 peer 10.0.1.4 connect-interface LoopBack0
 #
 ipv4-family unicast
 ..
 #
 ipv4-family vpnv4
  undo policy vpn-target
  peer 10.0.1.3 enable
  peer 10.0.1.3 reflect-client            
  peer 10.0.1.4 enable
  peer 10.0.1.4 reflect-client

With the default behaviour the route reflector will drop (and not reflect) routes for any RT import-extcommunity is does not know.



 
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