diff --git a/xCAT-server-2.0/lib/xcat/plugins/pxe.pm b/xCAT-server-2.0/lib/xcat/plugins/pxe.pm
index 74bf5d37b..e1d3bce9c 100644
--- a/xCAT-server-2.0/lib/xcat/plugins/pxe.pm
+++ b/xCAT-server-2.0/lib/xcat/plugins/pxe.pm
@@ -143,26 +143,28 @@ sub pass_along {
 
 
 
-
-sub preprocess_request {
-   my $req = shift;
-   $callback = shift;
-   if ($req->{_xcatdest}) { return [$req]; } #Exit if the packet has been preprocessed in its history
-   my @requests = ({%$req}); #Start with a straight copy to reflect local instance
-   my $sitetab = xCAT::Table->new('site');
-   (my $ent) = $sitetab->getAttribs({key=>'xcatservers'},'value');
-   $sitetab->close;
-   if ($ent and $ent->{value}) {
-      foreach (split /,/,$ent->{value}) {
-         if (xCAT::Utils->thishostisnot($_)) {
-            my $reqcopy = {%$req};
-            $reqcopy->{'_xcatdest'} = $_;
-            push @requests,$reqcopy;
-         }
-      }
-   }
-   return \@requests;
-}
+# Removing hierarchy,  command will be processed on the MN.
+# If hierachy is put back the code my change to use Utils->get_Servicenode
+# and not use xcatservers from the site table. 
+#sub preprocess_request {
+#   my $req = shift;
+#   $callback = shift;
+#   if ($req->{_xcatdest}) { return [$req]; } #Exit if the packet has been preprocessed in its history
+#   my @requests = ({%$req}); #Start with a straight copy to reflect local instance
+#   my $sitetab = xCAT::Table->new('site');
+#   (my $ent) = $sitetab->getAttribs({key=>'xcatservers'},'value');
+#   $sitetab->close;
+#   if ($ent and $ent->{value}) {
+#      foreach (split /,/,$ent->{value}) {
+#         if (xCAT::Utils->thishostisnot($_)) {
+#            my $reqcopy = {%$req};
+#            $reqcopy->{'_xcatdest'} = $_;
+#            push @requests,$reqcopy;
+#         }
+#      }
+#   }
+#   return \@requests;
+#}
 #sub preprocess_request {
 #   my $req = shift;
 #   my $callback = shift;