Hi,
I already have netflow configured and I see the different BGP-AS but when I seeing the amount of traffic it does not match the bandwidth of the circuit in question:
I am Running XR- Cisco
Configuration Related
flow exporter-map FE
version v9
options interface-table timeout 120
options sampler-table timeout 120
template timeout 10
transport udp 2055
source Loopback0
destination 10.205.3.83
flow monitor-map FM
record ipv4
exporter FE
cache permanent
cache entries 65535
cache timeout active 2
cache timeout inactive 2
cache timeout update 60
cache timeout rate-limit 2500
sampler-map FS
random 1 out-of 2000
Example for facebook Peering:

interface Bundle-Ether200
flow ipv4 monitor FM sampler FS ingress