On Thu, Jan 03, 2013 at 07:29:18PM +0100, Job Snijders wrote:

Dear all,

I want to inject information into syslog when certain magic prefixes are announced or withdrawn.

So far I have this snippet of configuration, but I'd also like to print the BGP AGGREGATOR ip address, and the AGGREGATOR AS number. How can I do this?

BIRD currently does not support reading BGP AGGREGATOR bgp attribute from filters.

filter collector_in { if (net ~ [ 84.205.64.0/24, 84.205.65.0/24 ]) then { print "MAGIC PREFIX SIGNALLED: " , net, "' from AS", bgp_path.last, " via AS", bgp_path.first, " [", proto, "]"; accept; } else accept; }

How can I get BIRD to print something when a prefix is withdrawn?

Filters are not executed for withdraws. You could probably do what you need by using logging features ('debug' protocol option with 'routes' keyword), perhaps using a pipe and a dedicated table for such magic prefixes - filters on a pipe for selecting prefixes, logging option on a pipe to log accepted ones. That would also log withdraws. -- Elen sila lumenn' omentielvo Ondrej 'SanTiago' Zajicek (email: santiago@crfreenet.org) OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net) "To err is human -- to blame it on a computer is even more so."