An enterprise customer has recently purchased a WAN link from a service provider. BGP is running over this WAN link. An engineer notices that the CE router uses an large amount of system resources to process routing updates by filtering out unwanted routing updates received from the PE, which configuration can be applied to reduce the amount of processing required on the CE router that is not accepting full routes from PE?

An enterprise customer has recently purchased a WAN link from a service provider. BGP is running over this WAN link. An engineer notices that the CE router uses an large amount of system resources to process routing updates by filtering out unwanted routing updates received from the PE, which configuration can be applied to reduce the amount of processing required on the CE router that is not accepting full routes from PE?
A . Enable the BGP prefix-based ORF capability CE and PE to filter out unwanted routing updates at the source
B . On CE, apply an outbound route-map on BGP PE-neighbor to filter all the undesired BGP updates learned from the PE
C . Enable BGP flowspec between CE and PE to negotiate which BGP prefixes to advertise
D . On CE place an inbound ACL on the interface-facing PE to filter all unwanted BGP prefixes

View Answer

Answer: A