Yes. All route servers automatically exchange blackholes with each other.
No. All route servers automatically exchange blackholes with each other. However, the preferred way is to only announce blackholes to rsbh.
This is a safety measure as omitting to do so would otherwise result in immediate blackholing of all your (maybe accidentally) announced prefixes. Please note that announcing a prefix to both rs1/rs2 and rsbh will result in blackholing of this prefix if the BLACKHOLE Community and/or Blackholing next-hop is set on the session towards rsbh.
No. If you peer with the Blackholing route server in Frankfurt, you can keep your existing filters in place and allow up to /32 (IPv4) and to /128 (IPv6) on the Blackholing route server sessions.
The Blackholing route server will only announce blackholes (i.e., prefixes blackholed by other peers).
No. Please accept all blackholes from the Blackholing route server for the service to work correctly. This includes IPv4 prefixes up to /32 and IPv6 prefixes up to /128.
The Blackholing route server (rsbh) is available at DE-CIX Frankfurt and in Dubai.
The Blackholing route server (rsbh) is available at DE-CIX Frankfurt and in Dubai. Have a look at our FAQs for the Blackholing route server below.
Blackholing is available at all DE-CIX exchanges, except Berlin, Moscow, and the Internet Exchanges in Asia.
No, Blackholing is free of charge for customers who use the GlobePEER service.
You can check this in the DE-CIX Looking Glass. By entering the blackhole prefix into the global search field, you can get an overview of the networks announcing this blackhole prefix, as well as the route servers and therewith the exchanges where the prefix is visible at.
Yes, standard DE-CIX route server BGP control communities apply to blackholes as well. You can e.g. signal a blackhole to all route server peers except AS64501 by setting the following communities: (6695:6695) where 6695 is the AS of the DE-CIX route servers in Frankfurt. Replace this to the corresponding route server AS of each DE-CIX…