Blackhole

RouterOS Forwarding Protocols
1

Hello everyone,

I come to you because I wonder how to proceed to set up the blackhole on my network.

My forwarder (the only one), informed me that his BGP communities for the blackhole was 65535: 666, and that if I wanted to blackhole an IP to all their forwarders, I had to announce the blackholed IP (/ 32) with these communities.

How to proceed ?

I read on some topics that I should use the filters on mikrotik, but that means that I have to modify the “filter-out” of the peer as well?

Thanks in advance, if anyone can tell me :slight_smile:

Axel

2

add prefix in BGP networks
and set community in out filter.

3

Ok thanks,

Can you tell me what filter must be added ? I’m afraid to do something stupid and set the community on all the prefix or block all the pref

4

/routing filter add chain=your_chain prefix=x.x.x.x/32 set-bgp-communities=65535: 666

5

Hi mrz,

I opened a topic here, can you help me?
http://forum.mikrotik.com/t/can-anyone-help-me-with-blackhole-rule/152819/1