diff --git a/protogeni/lib/GeniCMV2.pm.in b/protogeni/lib/GeniCMV2.pm.in
index 34adb51f286f405e93b7060dc50ae14a75c5701c..ebd22192a3f599176b6db31995236edb9fdd0fb4 100755
--- a/protogeni/lib/GeniCMV2.pm.in
+++ b/protogeni/lib/GeniCMV2.pm.in
@@ -980,7 +980,7 @@ sub SliverStatus($)
 	}
 
 	my $sliver_urn    = $sliver->sliver_urn();
-	my $component_urn = $sliver->component_urn();
+	my $resource_id = $sliver->resource_id();
 	my $state         = $sliver->state();
 	my $status        = $sliver->status();
 	my $error         = "";
@@ -993,7 +993,7 @@ sub SliverStatus($)
 	    $error = $sliver->ErrorLog();
 	}
 	$blob->{'details'}->{$sliver_urn} = {
-	    "component_urn" => $component_urn,
+	    "component_urn" => $resource_id,
 	    "state"  => $state,
 	    "status" => $status,
 	    "error"  => $error,
diff --git a/protogeni/lib/GeniSliver.pm.in b/protogeni/lib/GeniSliver.pm.in
index f5923a96bac152756448ea4899222a98e11485fd..6942ff606edc9a225ef41b40f65e80a7dbf4fa84 100755
--- a/protogeni/lib/GeniSliver.pm.in
+++ b/protogeni/lib/GeniSliver.pm.in
@@ -647,8 +647,9 @@ sub ErrorLog($)
     return $bootlog;
 }
 
-# Return the component URN. This is how a resource is resolved.
-sub component_urn($)
+# Return the resource URN. This is how a resource is resolved.
+# Resource urns may differ from component_urns (pcvm201-1 rather than pc201).
+sub resource_urn($)
 {
     my ($self)  = @_;
 
@@ -737,6 +738,9 @@ sub AnnotateManifest($)
     my $hostname      = GeniUtil::FindHostname($node->node_id());
     my $phostname     = $hostname;
     my $vhostname     = GeniUtil::FindVHostname($experiment, $node);
+    my $component_urn = GeniHRN::Generate("@OURDOMAIN@", "node",
+					  $node->phys_nodeid())
+;
     
     if ($node->isvirtnode()) {
 	$sshdport  = $node->sshdport();
@@ -752,10 +756,10 @@ sub AnnotateManifest($)
 	    if (defined($sshdport));
 	GeniXML::SetText("sliver_uuid", $rspec, $self->uuid());
 	GeniXML::SetText("sliver_urn", $rspec, $self->sliver_urn());
-	GeniXML::SetText("component_urn", $rspec, $self->component_urn());
+	GeniXML::SetText("component_urn", $rspec, $self->resource_urn());
     } else {
 	GeniXML::SetText("sliver_id", $rspec, $self->sliver_urn());
-	GeniXML::SetText("component_id", $rspec, $self->component_urn());
+	GeniXML::SetText("component_id", $rspec, $component_urn);
 	my $host = GeniXML::FindFirst("n:host", $rspec);
 	if (! defined($host)) {
 	    $host = GeniXML::AddElement("host", $rspec);