diff --git a/Info/Aggregate.pm b/Info/Aggregate.pm
index afb6f3f8..d863687c 100644
--- a/Info/Aggregate.pm
+++ b/Info/Aggregate.pm
@@ -61,7 +61,7 @@ sub agg_ports_ifstack {
   foreach my $idx ( keys %$ifStack ) {
       my ( $higher, $lower ) = split /\./, $idx;
       next if ( $higher == 0 or $lower == 0 );
-      if ( $ifType->{ $higher } eq 'ieee8023adLag' ) {
+      if ( $ifType->{ $higher } eq 'ieee8023adLag'  or $ifType->{ $higher } eq 'propMultiplexor') {
           $ret->{ $lower } = $higher;
       }
   }
diff --git a/Info/Layer2/HP.pm b/Info/Layer2/HP.pm
index b0d824b4..2aec8923 100644
--- a/Info/Layer2/HP.pm
+++ b/Info/Layer2/HP.pm
@@ -37,7 +37,7 @@ use Exporter;
 use SNMP::Info::Layer3;
 use SNMP::Info::MAU;
 use SNMP::Info::CDP;
-use SNMP::Info::Aggregate;
+use SNMP::Info::Aggregate 'agg_ports_ifstack';
 
 @SNMP::Info::Layer2::HP::ISA = qw/
     SNMP::Info::Aggregate
diff --git a/Info/Layer3/Arista.pm b/Info/Layer3/Arista.pm
index 1254b9e6..a5e11488 100644
--- a/Info/Layer3/Arista.pm
+++ b/Info/Layer3/Arista.pm
@@ -36,7 +36,7 @@ use Exporter;
 use SNMP::Info::Layer3;
 use SNMP::Info::MAU;
 use SNMP::Info::LLDP;
-use SNMP::Info::Aggregate;
+use SNMP::Info::Aggregate 'agg_ports_ifstack';
 
 @SNMP::Info::Layer3::Arista::ISA = qw/
     SNMP::Info::Aggregate