BlackHole Configuration - IOS XR

[aridy]

Hi,

I have a Cisco ASR 9010 Router and I want to configure BGP BlackHole.

I want to know about the syntax that is needed to be applied in order to do this, because I am having some issues regarding BH application in IOS XR.

Lets say that I want to apply this to my Upstream with a blackhole community of 3257:666.

Lets suppose my blackhole community will be 65538:666.

route-policy BH

 if community matches-any (65538:666) then

   set community (3257:666) additive

 endif

end-policy

So, this matches my community with the community of my upstream.

What else is needed to complete the configuration?

So, if I need to advertise to my upstream my IP 10.10.10.10/32, what should i do?

Regards,

Aridy

[Harold Ritter]

Hi Arian,

Here's a good document on how to use Remotely Triggered Black Hole (RTBH) on IOS-XR.

https://www.cisco.com/c/en/us/support/docs/routers/asr-9000-series-aggregation-services-routers/116386-configure-asr9000-00.html

Regards,

[aridy]

Hi Harold,

Thank you for the reply.

I have seen this material before, but I couldn't apply successfully the configuration on my router.