How configure Ganglia in Unicast correctly?

I'm working with Ganglia, great tool by the way! I'm trying to make this topology, with some nodes running centOS 6.4, centOS 5.9.

So for this I'm trying this configuration for GMetad (the rest is default):

##########################################################################
Head Monitor Cluster (GMetad + Gmond > mute no > deaf no + GWeb ) | centOS 6.4 (desktop)
##########################################################################
data_source "head monitor clusters" 10 192.168.1.100 # 192.168.1.100 == localhost
data_source "monitor cluster" 10 192.168.1.51:8649
gridname "Company"
authority "http://192.168.1.100/ganglia/"



##########################################################################
Monitor Cluster (GMond > mute no > deaf no ) | centOS 6.4 (minimal)
##########################################################################

globals {
  daemonize = yes
  setuid = yes
  user = ganglia
  debug_level = 0
  max_udp_msg_len = 1472
  mute = no
  deaf = no
  allow_extra_data = yes
  host_dmax = 86400 /*secs */
  cleanup_threshold = 300 /*secs */
  gexec = no
  send_metadata_interval = 5 /*secs */
}

cluster {
  name = "Monitor"
  owner = "unspecified"
  latlong = "unspecified"
  url = "unspecified"
}

/* The host section describes attributes of the host, like the location */
host {
  location = "unspecified"
}

udp_send_channel {
  host = 192.168.1.51 # send the data collect to itself
  port = 8649
  ttl = 1
}

udp_send_channel {
  host = 192.168.1.100 #send the data to 
  port = 8649
  ttl = 1
}


/* You can specify as many udp_recv_channels as you like as well. */
udp_recv_channel {
  port = 8649
}

/* You can specify as many tcp_accept_channels as you like to share
   an xml description of the state of the cluster */
tcp_accept_channel {
  port = 8649
}


##########################################################################
Node (Gmond > mute no > deaf yes ) | centOS 5.9 (minimal)
##########################################################################

/* This configuration is as close to 2.5.x default behavior as possible
   The values closely match ./gmond/metric.h definitions in 2.5.x */
globals {
  daemonize = yes
  setuid = yes
  user = ganglia
  debug_level = 0
  max_udp_msg_len = 1472
  mute = no
  deaf = yes
  host_dmax = 86400 /*secs */
  cleanup_threshold = 300 /*secs */
  gexec = no
}

cluster {
  name = "Monitor"
  owner = "unspecified"
  latlong = "unspecified"
  url = "unspecified"
}

/* The host section describes attributes of the host, like the location */
host {
  location = "unspecified"
}

/* Feel free to specify as many udp_send_channels as you like.  Gmond
   used to only support having a single channel */
udp_send_channel {
  host=192.168.1.51 #send to monitor cluster
  port = 8649
  ttl = 1
}

/* You can specify as many udp_recv_channels as you like as well. */
udp_recv_channel {
#  mcast_join = 239.2.11.71
  port = 8649
#  bind = 239.2.11.71
}

/* You can specify as many tcp_accept_channels as you like to share
   an xml description of the state of the cluster */
tcp_accept_channel {
  port = 8649
}

And that's it. But this configuration it's not working, I already setup 9 virtual machines to make this work out, but nothing so far. I disabled iptables, ip6tables and selinux. I'm working on this for 3 day and night and nothing seems to work.. I would like some help in this, please, please, I beg for help. I really don't understand why this configuration ain't working, after read so many tutorials and O'Reilly book about Ganglia. Any idea ? Or help ?

And yes, if I do : from 192.168.1.100 8649 telnet 192.168.100 8649, the whole data collected is displayed.

The same thing to 192.168.1.51, from 192.168.1.100, but this one do not display in the Ganglia Web. The charts, of it, are always -nan.

Any idea ? Thank you!