Best practice for null routing?

bob1

Can people share any tips on the best ways to null route an IP?

I am assuming you have to add the BGP black hole community for each upstream you are connected to (which all seem to be ASN:666). Or is there a better way?

techhelper1

You tag the specific IP with the blackhole communities, and also discard any received traffic for the IP.

Clouvider

It’s in the manual from your upstreams. Each Can have a different process for that, I.e. Cogent is special for example. You consult the upstreams, not the forums.