FastNetMon BGP Flow spec configuration

For this step, you need to have working BGP unicast configuration. Please enable flow spec AFI on router’s side and then we could start!

Enable flow spec for your peering connection

Enable flow spec globally:

We could specify action type for FastNetMon’s announces (accept, discard or rate-limit):

For rate-limit you could specify actual rate (usually “bytes per second” but please check with your network vendor):

Apply changes:

Then we could prepare custom announce (please replace our example addresses here by your real addresses specified in networks list)

And check BGP daemon output:

Output should be like this: