diff --git a/orchagent/intfsorch.cpp b/orchagent/intfsorch.cpp
index a49b52ec4eb..3d67767c6d8 100644
--- a/orchagent/intfsorch.cpp
+++ b/orchagent/intfsorch.cpp
@@ -18,8 +18,8 @@ extern sai_router_interface_api_t*  sai_router_intfs_api;
 extern sai_route_api_t*             sai_route_api;
 extern sai_neighbor_api_t*          sai_neighbor_api;
 
-extern PortsOrch *gPortsOrch;
 extern sai_object_id_t gSwitchId;
+extern PortsOrch *gPortsOrch;
 extern CrmOrch *gCrmOrch;
 extern BufferOrch *gBufferOrch;
 
@@ -57,6 +57,27 @@ void IntfsOrch::decreaseRouterIntfsRefCount(const string &alias)
                   alias.c_str(), m_syncdIntfses[alias].ref_count);
 }
 
+bool IntfsOrch::setRouterIntfsMtu(Port &port)
+{
+    SWSS_LOG_ENTER();
+
+    sai_attribute_t attr;
+    attr.id = SAI_ROUTER_INTERFACE_ATTR_MTU;
+    attr.value.u32 = port.m_mtu;
+
+    sai_status_t status = sai_router_intfs_api->
+            set_router_interface_attribute(port.m_rif_id, &attr);
+    if (status != SAI_STATUS_SUCCESS)
+    {
+        SWSS_LOG_ERROR("Failed to set router interface %s MTU to %u, rv:%d",
+                port.m_alias.c_str(), port.m_mtu, status);
+        return false;
+    }
+    SWSS_LOG_NOTICE("Set router interface %s MTU to %u",
+            port.m_alias.c_str(), port.m_mtu);
+    return true;
+}
+
 void IntfsOrch::doTask(Consumer &consumer)
 {
     SWSS_LOG_ENTER();
@@ -159,7 +180,8 @@ void IntfsOrch::doTask(Consumer &consumer)
 
             addSubnetRoute(port, ip_prefix);
             addIp2MeRoute(ip_prefix);
-            if(port.m_type == Port::VLAN && ip_prefix.isV4())
+
+            if (port.m_type == Port::VLAN && ip_prefix.isV4())
             {
                 addDirectedBroadcast(port, ip_prefix.getBroadcastIp());
             }
diff --git a/orchagent/intfsorch.h b/orchagent/intfsorch.h
index 0c08350d338..61df9dee591 100644
--- a/orchagent/intfsorch.h
+++ b/orchagent/intfsorch.h
@@ -31,6 +31,8 @@ class IntfsOrch : public Orch
 
     void increaseRouterIntfsRefCount(const string&);
     void decreaseRouterIntfsRefCount(const string&);
+
+    bool setRouterIntfsMtu(Port &port);
 private:
     IntfsTable m_syncdIntfses;
     void doTask(Consumer &consumer);
diff --git a/orchagent/orchdaemon.cpp b/orchagent/orchdaemon.cpp
index 26bd446da27..76b8611be32 100644
--- a/orchagent/orchdaemon.cpp
+++ b/orchagent/orchdaemon.cpp
@@ -22,6 +22,7 @@ extern sai_object_id_t             gSwitchId;
  */
 PortsOrch *gPortsOrch;
 FdbOrch *gFdbOrch;
+IntfsOrch *gIntfsOrch;
 NeighOrch *gNeighOrch;
 RouteOrch *gRouteOrch;
 AclOrch *gAclOrch;
@@ -64,8 +65,8 @@ bool OrchDaemon::init()
     gCrmOrch = new CrmOrch(m_configDb, CFG_CRM_TABLE_NAME);
     gPortsOrch = new PortsOrch(m_applDb, ports_tables);
     gFdbOrch = new FdbOrch(m_applDb, APP_FDB_TABLE_NAME, gPortsOrch);
-    IntfsOrch *intfs_orch = new IntfsOrch(m_applDb, APP_INTF_TABLE_NAME);
-    gNeighOrch = new NeighOrch(m_applDb, APP_NEIGH_TABLE_NAME, intfs_orch);
+    gIntfsOrch = new IntfsOrch(m_applDb, APP_INTF_TABLE_NAME);
+    gNeighOrch = new NeighOrch(m_applDb, APP_NEIGH_TABLE_NAME, gIntfsOrch);
     gRouteOrch = new RouteOrch(m_applDb, APP_ROUTE_TABLE_NAME, gNeighOrch);
     CoppOrch  *copp_orch  = new CoppOrch(m_applDb, APP_COPP_TABLE_NAME);
     TunnelDecapOrch *tunnel_decap_orch = new TunnelDecapOrch(m_applDb, APP_TUNNEL_DECAP_TABLE_NAME);
@@ -116,7 +117,7 @@ bool OrchDaemon::init()
         CFG_DTEL_EVENT_TABLE_NAME
     };
 
-    m_orchList = { switch_orch, gCrmOrch, gBufferOrch, gPortsOrch, intfs_orch, gNeighOrch, gRouteOrch, copp_orch, tunnel_decap_orch, qos_orch, mirror_orch };
+    m_orchList = { switch_orch, gCrmOrch, gBufferOrch, gPortsOrch, gIntfsOrch, gNeighOrch, gRouteOrch, copp_orch, tunnel_decap_orch, qos_orch, mirror_orch };
 
     bool initialize_dtel = false;
     if (platform == BFN_PLATFORM_SUBSTRING || platform == VS_PLATFORM_SUBSTRING)
diff --git a/orchagent/port.h b/orchagent/port.h
index cd17d858a2e..4f955dab51e 100644
--- a/orchagent/port.h
+++ b/orchagent/port.h
@@ -11,7 +11,7 @@ extern "C" {
 #include <map>
 
 #define DEFAULT_PORT_VLAN_ID    1
-#define DEFAULT_MTU        9100
+#define DEFAULT_MTU              9100
 
 namespace swss {
 
diff --git a/orchagent/portsorch.cpp b/orchagent/portsorch.cpp
index 8d6f58988c5..7c85eca5182 100644
--- a/orchagent/portsorch.cpp
+++ b/orchagent/portsorch.cpp
@@ -1,4 +1,6 @@
 #include "portsorch.h"
+#include "intfsorch.h"
+#include "bufferorch.h"
 #include "neighorch.h"
 
 #include <cassert>
@@ -18,7 +20,6 @@
 #include "sai_serialize.h"
 #include "crmorch.h"
 #include "countercheckorch.h"
-#include "bufferorch.h"
 #include "notifier.h"
 
 extern sai_switch_api_t *sai_switch_api;
@@ -30,6 +31,7 @@ extern sai_hostif_api_t* sai_hostif_api;
 extern sai_acl_api_t* sai_acl_api;
 extern sai_queue_api_t *sai_queue_api;
 extern sai_object_id_t gSwitchId;
+extern IntfsOrch *gIntfsOrch;
 extern NeighOrch *gNeighOrch;
 extern CrmOrch *gCrmOrch;
 extern BufferOrch *gBufferOrch;
@@ -1532,6 +1534,10 @@ void PortsOrch::doPortTask(Consumer &consumer)
                         p.m_mtu = mtu;
                         m_portList[alias] = p;
                         SWSS_LOG_NOTICE("Set port %s MTU to %u", alias.c_str(), mtu);
+                        if (p.m_rif_id)
+                        {
+                            gIntfsOrch->setRouterIntfsMtu(p);
+                        }
                     }
                     else
                     {