grc/server/bird/bird.conf

##########################################################################
#
# BIRD2 Route Collector Configuration
#
##########################################################################

# route collector AS
define GRC_AS = 4242422602;

# router ID
router id 172.20.129.165;

# logging options
log syslog all;

# enable internal watchdog
watchdog warning 5 s;
watchdog timeout 30 s;

# set timeformat for  bird_exporter
timeformat protocol iso long;

##########################################################################
# ignore interface up/down events

protocol device { }

##########################################################################
# import filters

# IPv4 import filter
function rc_peer_import4(int peer_as; int peer_ref)
{
  # accept valid networks
  if net ~ [
    172.16.0.0/12+,
    10.0.0.0/8+
  ] then {

    # add a large community to tag where the route was sourced
    bgp_large_community.add(( GRC_AS, peer_as, peer_ref ));
    return true;
  }

  # reject anything else
  return false;
}

# IPv6 import filter
function rc_peer_import6(int peer_as; int peer_ref)
{
  # accept valid networks
  if net ~ [
    fd00::/8{44,64}
  ] then {
  
    bgp_large_community.add(( GRC_AS, peer_as, peer_ref ));
    return true;
  }
  
  # reject anything else
  return false;
}

##########################################################################
# peer templates

# IPv4 only peer
template bgp RC_PEER4 {

  local as GRC_AS;
  multihop;
  passive;

  ipv4 {
    import keep filtered;
    import limit 10000 action block;

    # accept multiple routes for same desgination
    add paths rx;

    # don't export anything
    export none;
  };

}

# IPv6 only peer
template bgp RC_PEER6 {

  local as GRC_AS;
  multihop;
  passive;

  ipv6 {
    import keep filtered;
    import limit 10000 action block;

    # accept multiple routes for same desgination
    add paths rx;

    # don't export anything
    export none;
  };

}


# Combined multiprotocol peer
template bgp RC_MULTIPEER {

  local as GRC_AS;
  multihop;
  passive;  

  ipv4 {
    import keep filtered;
    import limit 10000 action block;

    # accept multiple routes for same desgination
    add paths rx;

    # don't export anything
    export none;
  };

  ipv6 {
    import keep filtered;
    import limit 10000 action block;

    # accept multiple routes for same desgination
    add paths rx;

    # don't export anything
    export none;
  };

}

##########################################################################
# export templates

# IPv4 export filter
function rc_peer_export4()
{
  if net ~ [
    172.16.0.0/12+,
    10.0.0.0/8+   
  ] then {
    return true;
  }
  return false;
}

# IPv6 export filter
function rc_peer_export6()
{
 if net ~ [
    fd00::/8{44,64}
  ] then {
    return true;
  }
  return false;
}

# IPv4 only peer
template bgp RC_EXPORT4 {

  local as GRC_AS;
  multihop;

  ipv4 {
    import none;
    export where rc_peer_export4();
    add paths tx;
  };

}

template bgp RC_EXPORT6 {

  local as GRC_AS;
  multihop;

  ipv6 {
    import none;
    export where rc_peer_export6();
    add paths tx;
  };
}

template bgp RC_EXPORT_MULTI {

  local as GRC_AS;
  multihop;

  ipv4 {
    import none;
    export where rc_peer_export4();
    add paths tx;
  };
  
  ipv6 {
    import none;
    export where rc_peer_export6();
    add paths tx;
  };
}

##########################################################################
# include peer definitions

include "/etc/bird/peers/*.conf";

##########################################################################
# end of file