Route Servers and Secondary Routes (bird 1.3.10 and debian kernel 3.2-amd64)

[Daniel Gomez]

Hi Everyone,

I have used both examples from Ondrej "Simple Route Server" and "Router
server with community based filtering and single RIB",  from the
gitlabs.labs.nic.cz, to configure 2 Route Servers that need to tranfer to
each other via iBGP all the routes they have learned.

I thought that the most important parameters, when coupling both Router
Servers, where the "table master sorted" and the "secondary" parameter for
the iBGP configuration, but my routing table is just showing the Best Route
and not all of them.

I am pushing to one of the servers via iBGP and "bgpdump/bgpsimple" around
775775 prefixes (www.ripe.net/cata-tools/stats/ris/ris-raw-data).

I do not know why but the route server is receiving the 775775 prefixes,
filtering them and just showing the preferred ones. I have tried with "show
route all filtered", but the command does not show anything.

R65500x1 BGP      master   up     14:11       Established
  Description:    192.168.0.1
  Preference:     100
  Input filter:   ACCEPT
  Output filter:  ACCEPT
  Routes:         47423 imported, 0 exported, 47423 preferred  <<<----
  Route change stats:     received   rejected   filtered    ignored
accepted
    Import updates:         775775          0          0      17521
758254  <<<----
    Import withdraws:            6          0        ---          2
4
    Export updates:         758255     758254          2        ---
0
    Export withdraws:            4        ---        ---        ---
0
  BGP state:          Established
    Neighbor address: 192.168.0.1
    Neighbor AS:      65500
    Neighbor ID:      192.168.0.1
    Neighbor caps:
    Session:          internal
    Source address:   192.168.0.2
    Hold timer:       1905/2400
    Keepalive timer:  339/800


// CONFIGURATION

log "/var/log/bird.log" all;
log syslog all;

router id 192.168.0.2;
define myas = 65500;

####
# Protocol template

template bgp PEERS {
  local as myas;
  source address 192.168.0.2;
  secondary;
  import all;
  export all;
  route limit 10000;
}

table master sorted;

####
# Configuration of BGP peer follows

### AS65500 - Member1

protocol bgp R65500x1 from PEERS {
  description "192.168.0.1";
  gateway direct;
  neighbor 192.168.0.1 as 65500;
}

// LOGS

Nov 25 17:06:12 bird: R65500x1 > added [best] 1.0.4.0/24 via 192.168.0.1 on
eth2
Nov 25 17:06:12 bird: kernel1 < added 1.0.4.0/24 via 192.168.0.1 on eth2
Nov 25 17:06:12 bird: R65500x1 < rejected by protocol 1.0.4.0/24 via
192.168.0.1 on eth2
Nov 25 17:06:12 bird: R65500x1 > added [best] 1.0.4.0/24 via 192.168.0.1 on
eth2
Nov 25 17:06:12 bird: kernel1 < replaced 1.0.4.0/24 via 192.168.0.1 on eth2
Nov 25 17:06:12 bird: R65500x1 < rejected by protocol 1.0.4.0/24 via
192.168.0.1 on eth2
Nov 25 17:06:12 bird: R65500x1 > added [best] 1.0.4.0/24 via 192.168.0.1 on
eth2
Nov 25 17:06:12 bird: kernel1 < replaced 1.0.4.0/24 via 192.168.0.1 on eth2
Nov 25 17:06:12 bird: R65500x1 < rejected by protocol 1.0.4.0/24 via
192.168.0.1 on eth2
Nov 25 17:06:12 bird: R65500x1 > added [best] 1.0.4.0/24 via 192.168.0.1 on
eth2


Any idea?

Thanks in advance,

Daniel Gomez