diff --git a/src/swsssdk/port_util.py b/src/swsssdk/port_util.py
index a21f5288..a50574a8 100644
--- a/src/swsssdk/port_util.py
+++ b/src/swsssdk/port_util.py
@@ -14,6 +14,7 @@
 SONIC_VLAN_RE_PATTERN = "^Vlan(\d+)$"
 SONIC_PORTCHANNEL_RE_PATTERN = "^PortChannel(\d+)$"
 SONIC_MGMT_PORT_RE_PATTERN = "^eth(\d+)$"
+SONIC_LOOPBACK_RE_PATTERN = "^Loopback(\d+)$"
 SONIC_ETHERNET_IB_RE_PATTERN = "^Ethernet-IB(\d+)$"
 SONIC_ETHERNET_REC_RE_PATTERN = "^Ethernet-Rec(\d+)$"
 
@@ -21,8 +22,9 @@ class BaseIdx:
     ethernet_base_idx = 1
     vlan_interface_base_idx = 2000
     ethernet_bp_base_idx = 9000
-    portchannel_base_idx = 1000
-    mgmt_port_base_idx = 10000
+    portchannel_base_idx = 10000
+    mgmt_port_base_idx = 1000
+    loopback_base_idx = 20000
     ethernet_ib_base_idx = 11000
     ethernet_rec_base_idx = 12000
 
@@ -32,8 +34,9 @@ def get_index(if_name):
     Ethernet N = N + 1
     Vlan N = N + 2000
     Ethernet_BP N = N + 9000
-    PortChannel N = N + 1000
-    eth N = N + 10000
+    PortChannel N = N + 10000
+    eth N = N + 1000
+    loopback N = N + 20000
     Ethernet_IB N = N + 11000
     Ethernet_Rec N = N + 12000
     """
@@ -48,6 +51,7 @@ def get_index_from_str(if_name):
     Ethernet_BP N = N + 9000
     PortChannel N = N + 1000
     eth N = N + 10000
+    loopback N = N + 20000
     Ethernet_IB N = N + 11000
     Ethernet_Rec N = N + 12000
     """
@@ -57,6 +61,7 @@ def get_index_from_str(if_name):
         SONIC_VLAN_RE_PATTERN: BaseIdx.vlan_interface_base_idx,
         SONIC_PORTCHANNEL_RE_PATTERN: BaseIdx.portchannel_base_idx,
         SONIC_MGMT_PORT_RE_PATTERN: BaseIdx.mgmt_port_base_idx,
+        SONIC_LOOPBACK_RE_PATTERN: BaseIdx.loopback_base_idx,
         SONIC_ETHERNET_IB_RE_PATTERN: BaseIdx.ethernet_ib_base_idx,
         SONIC_ETHERNET_REC_RE_PATTERN: BaseIdx.ethernet_rec_base_idx
     }