diff --git a/LANforge/Utils.pm b/LANforge/Utils.pm
index 3c9b73e1..51134715 100644
--- a/LANforge/Utils.pm
+++ b/LANforge/Utils.pm
@@ -421,6 +421,91 @@ sub sleep_sec {
   }
 }
 
+##
+##  Returns ref to map of all stations maching a parent device
+##  EG: $rh_eid_map = $u->get_eid_map($::resource)
+##
+
+sub get_eid_map {
+  my ($self, $resource) = @_;
+  my %eid_map = ();
+  my @ports_lines = split("\n", $self->doAsyncCmd("nc_show_ports 1 $resource ALL"));
+  chomp(@ports_lines);
+
+  my ($eid, $card, $port, $type, $mac, $dev, $parent, $ip);
+  foreach my $line (@ports_lines) {
+    # collect all stations on that radio add them to @interfaces
+    if ($line =~ /^Shelf: /) {
+      $card = undef; $port = undef;
+      $type = undef; $parent = undef;
+      $eid = undef; $mac = undef;
+      $dev = undef;
+      $ip = undef;
+    }
+
+    # careful about that comma after card!
+    # NO EID for Shelf: 1, Card: 1, Port: 2  Type: WIFI-Radio  Alias:
+    ($card, $port, $type) = $line =~ m/^Shelf: 1, Card: (\d+),\s+Port: (\d+)\s+Type: (\w+)/;
+    if ((defined $card) && ($card ne "") && (defined $port) && ($port ne "")) {
+      $eid = "1.${card}.${port}";
+      my $rh_eid = {
+        eid => $eid,
+        type => $type,
+        parent => undef,
+        dev => undef,
+      };
+      $eid_map{$eid} = $rh_eid;
+      #print "\nfound eid $eid\n";
+    }
+    #elsif ($line =~ /^Shelf/) {
+    #  #print "NO EID for $line\n";
+    #}
+
+    if (!(defined $eid) || ($eid eq "")) {
+      #print "NO EID for $line\n";
+      next;
+    }
+    ($mac, $dev) = $line =~ / MAC: ([0-9:a-fA-F]+)\s+DEV: (\S+)/;
+    if ((defined $mac) && ($mac ne "")) {
+     #print "$eid MAC: $line\n";
+      $eid_map{$eid}->{mac} = $mac;
+      $eid_map{$eid}->{dev} = $dev;
+    }
+
+    ($parent) = $line =~ / Parent.Peer: (\S+) /;
+    if ((defined $parent) && ($parent ne "")) {
+      #print "$eid PARENT: $line\n";
+      $eid_map{$eid}->{parent} = $parent;
+    }
+
+    ($ip) = $line =~ m/ IP: *([^ ]+) */;
+    if ((defined $ip) && ($ip ne "")) {
+      #print "$eid IP: $line\n";
+      $eid_map{$eid}->{ip} = $ip;
+    }
+  } # foreach
+
+  #foreach $eid (keys %eid_map) {
+  #  print "eid $eid ";
+  #}
+  return \%eid_map;
+}
+
+##
+## retrieve ports on radio from EID map
+## EG: $ra_interfaces = $u->ports_on_radio($rh_eid_map, $radio_name);
+##
+sub ports_on_radio {
+  my ($self, $rh_eid_map, $radio) = @_;
+  my @interfaces = ();
+  while (my ($eid, $rh_eid) = each %$rh_eid_map) {
+    if ((defined $rh_eid->{parent}) && ($rh_eid->{parent} eq $radio)) {
+      push(@interfaces, $rh_eid->{dev});
+    }
+  }
+
+  return \@interfaces;
+}
 
 1; # So the require or use succeeds (perl stuff)
 __END__