flowspec route specification

[Ondrej Zajicek]

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.)


-- 
Elen sila lumenn' omentielvo

Ondrej 'Santiago' Zajicek (email: santiago at crfreenet.org)
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"To err is human -- to blame it on a computer is even more so."