[ixpmanager] BIRD Config Gen: Prefixes Not Being Exported; Strange Errors

[Kyle Spencer]

Right. Silly me. Here's the offending section:

##
## Standard IXP community filter
##

function ixp_community_filter(int peerasn)
{
        if !(source = RTS_BGP) then
                return false;

        # it's unwise to conduct a 32-bit check on a 16-bit value
        if peerasn > 65535 then
                return true;

        # Implement widely used community filtering schema.
        if (0, peerasn) ~ bgp_community then
                return false;
        if (routeserverasn, peerasn) ~ bgp_community then
                return true;
        if (0, routeserverasn) ~ bgp_community then
                return false;

        return true;
}

The errors specifically reference this line for both v4 and v6 instances:

     if (routeserverasn, peerasn) ~ bgp_community then

I've attached the full config file (for v4) just for reference.

IRRDB filtering is not enabled right now.


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On 21 Jan 2018 15:43, "Barry O'Donovan" <barry.odonovan at inex.ie> wrote:

>
>
>
> Kyle Spencer wrote:
> > Meanwhile, BIRD's log file is flooded with this error:
> >
> > 2018-01-21 14:38:13 <ERR> ...
> > 2018-01-21 14:38:14 <ERR> filters, line 74: Can't operate with value
> > out of bounds in pair constructor
> > 2018-01-21 14:38:14 <ERR> filters, line 74: Can't operate with value
> > out of bounds in pair constructor
> > 2018-01-21 14:38:14 <ERR> ...
> > 2018-01-21 14:38:47 <ERR> filters, line 74: Can't operate with value
> > out of bounds in pair constructor
>
> We'll need to see the bird config file Kyle.
>
> Or at least the snippet around those lines.
>
> I presume you're try to build a safe route server with prefix filtering?
> Have you populated the database as per:
>
> http://docs.ixpmanager.org/features/irrdb/
>
>  - Barry
>
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