diff --git a/xCAT-server/lib/xcat/plugins/setup.pm b/xCAT-server/lib/xcat/plugins/setup.pm
index a217ab4fe..c39765ee5 100644
--- a/xCAT-server/lib/xcat/plugins/setup.pm
+++ b/xCAT-server/lib/xcat/plugins/setup.pm
@@ -1205,7 +1205,10 @@ sub findSNsinBB {
 	my $framebase = $$framename{'primary-start'};
 	foreach my $p (@snpositions) {
 		my $cecbase = 0;
-		my $frame = $framebase;
+        my $framehash = parsenoderange($STANZAS{'xcat-frames'});
+        my $frame1 = $$framehash{'primary-start'};
+        my $frame = $frame1;
+		#my $frame = $framebase;
 		while ($p > ($cecbase + ($NUMCECSINFRAME{$frame}||$cecsperframe))) {
 			# p is not in this frame, go on to the next
 			$cecbase += $NUMCECSINFRAME{$frame} || $cecsperframe;