export filter matches, but not announced

[Alexander Zubkov]

Hi,

Please show the output of:
show route export nullroute
And why do you think it is not exported?

On Thu, Jul 23, 2020 at 8:08 PM micah anderson <micah at riseup.net> wrote:
>
>
> Hi,
>
> I have a peer configured with an export filter called 'bgp_nullroute',
> and if I do 'birdc show route filter bgp_nullroute' i see a netblock
> there.
>
> I thought that would mean that this netblock would be exported/announced
> to the peer, but its not being exported, but there is something that I
> do not understand, I would appreciate a nudge in the right direction!
>
> protocol bgp nullroute {
>   description "nullroute server";
>   local as ASN;
>   source address 199.254.238.1;
>   neighbor 192.168.1.1 as 64512;
>   multihop 255;
>   import filter bgp_in_nullroute;
>   export filter bgp_nullroute;
> }
>
> protocol static static_nullroute {
>          import filter static_nullroutes;
>          include "static_nullroutes.conf";
> }
>
> file static_nullroutes.conf has:
> route 204.13.164.220/32 blackhole;
>
> define ASN = 16652;
>
>
> filter bgp_nullroute {
>    if (ASN,666) ~ bgp_community && net.len = 32 && our_network() then {
>    accept;
>    }
>    else reject;
> }
>
>
> bird> show route all filter bgp_nullroute
> 204.13.164.220/32  blackhole [static_nullroute 09:11:08] (200)
>         Type: static unicast univ
>         BGP.community: (16652,666)
>
> bird> show protocols all nullroute
> name     proto    table    state  since       info
> nullroute BGP      master   up     2020-07-23 10:01:28  Established
>   Description:    nullroute server
>   Preference:     100
>   Input filter:   bgp_in_nullroute
>   Output filter:  bgp_nullroute
>   Routes:         0 imported, 0 exported, 0 preferred
>   Route change stats:     received   rejected   filtered    ignored   accepted
>     Import updates:              0          0          0          0          0
>     Import withdraws:            0          0        ---          0          0
>     Export updates:         802145        134     802011        ---          0
>     Export withdraws:           71        ---        ---        ---          0
>   BGP state:          Established
>     Neighbor address: 192.168.1.1
>     Neighbor AS:      64512
>     Neighbor ID:      192.168.1.220
>     Neighbor caps:    refresh AS4
>     Session:          external multihop AS4
>     Source address:   199.254.238.1
>     Hold timer:       159/180
>     Keepalive timer:  3/60
>
> --
>         micah