flowspec route specification

[Alexander Shikov]

On Mon, Feb 28, 2022 at 04:47:06 +0100, Ondrej Zajicek wrote:
> On Mon, Feb 28, 2022 at 02:02:58AM +0200, Alexander Shikov wrote:
> > Hello!
> > 
> > I'm trying to inject flowspec routes from bird to Juniper MX box:
> > 
> > route flow4 { dst 109.68.40.15/32; proto 17; dport 53;  } {
> >         bgp_ext_community.add( (generic, 0x80060000, 0x0 ) );
> > };
> > 
> > route flow4 { dst 109.68.40.16/32; proto 17; dport 123;  } {
> >         bgp_ext_community.add( (generic, 0x80060000, 0x000098968 ) );
> > };
> > 
> > 
> > The second flow specification should apply traffic-rate to traffic, but 
> > on Juniper these two flow routes have the same community:
> 
> Hello
> 
> Note that the traffic-rate community uses floating point and not fixed
> point representation, so 0x98968 is almost zero. See
> 
> https://bird.network.cz/pipermail/bird-users/2018-June/012485.html
> 
> (It also contains a link to a FP32 convertor.)

Thank you, Ondrej!

-- 
Alexander Shikov
Technical Staff, Digital Telecom IX
Tel.: +380 44 201 14 07
Mob.: +380 50 410 30 57
http://dtel-ix.net/