diff --git a/controller/ofctrl.c b/controller/ofctrl.c
index a1676a7883..c19cc7d4a6 100644
--- a/controller/ofctrl.c
+++ b/controller/ofctrl.c
@@ -928,6 +928,14 @@ ofctrl_recv(const struct ofp_header *oh, enum ofptype type)
     }
 }
 
+//TODO
+void
+ofctrl_reconnect(void)
+{
+    VLOG_INFO("Trigger OpenFlow re-connection.");
+    rconn_reconnect(swconn);
+}
+
 static bool
 flow_action_has_drop(const struct ovn_flow *f)
 {
diff --git a/controller/ofctrl.h b/controller/ofctrl.h
index 105f9370be..4ac2c8fd68 100644
--- a/controller/ofctrl.h
+++ b/controller/ofctrl.h
@@ -145,4 +145,7 @@ bool ofctrl_is_connected(void);
 void ofctrl_set_probe_interval(int probe_interval);
 void ofctrl_get_memory_usage(struct simap *usage);
 
+//TODO
+void ofctrl_reconnect(void);
+
 #endif /* controller/ofctrl.h */
diff --git a/controller/ovn-controller.c b/controller/ovn-controller.c
index 1349bdb011..50ea1ca9e7 100644
--- a/controller/ovn-controller.c
+++ b/controller/ovn-controller.c
@@ -5664,6 +5664,7 @@ main(int argc, char *argv[])
                                            br_int ? br_int->name : NULL)) {
                 VLOG_INFO("OVS feature set changed, force recompute.");
                 engine_set_force_recompute(true);
+                ofctrl_reconnect();
             }
 
             if (br_int) {
diff --git a/include/ovn/features.h b/include/ovn/features.h
index 7c3004b271..06de5e081b 100644
--- a/include/ovn/features.h
+++ b/include/ovn/features.h
@@ -49,5 +49,7 @@ void ovs_feature_support_destroy(void);
 bool ovs_feature_is_supported(enum ovs_feature_value feature);
 bool ovs_feature_support_run(const struct smap *ovs_capabilities,
                              const char *br_name);
+uint32_t ovs_feature_max_meters_get(void);
+uint32_t ovs_feature_max_select_groups_get(void);
 
 #endif
diff --git a/lib/features.c b/lib/features.c
index d24e8f6c5c..a6de84d1e8 100644
--- a/lib/features.c
+++ b/lib/features.c
@@ -27,6 +27,7 @@
 #include "openvswitch/rconn.h"
 #include "openvswitch/ofp-msgs.h"
 #include "openvswitch/ofp-meter.h"
+#include "openvswitch/ofp-group.h"
 #include "openvswitch/ofp-util.h"
 #include "ovn/features.h"
 
@@ -81,6 +82,9 @@ static struct ovs_feature all_ovs_features[] = {
 /* A bitmap of OVS features that have been detected as 'supported'. */
 static uint32_t supported_ovs_features;
 
+static struct ofputil_meter_features supported_ovs_meter_features;
+static struct ofputil_group_features supported_ovs_group_features;
+
 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 5);
 
 /* ovs-vswitchd connection. */
@@ -149,6 +153,9 @@ ovs_feature_get_openflow_cap(const char *br_name)
         msg = ofpraw_alloc(OFPRAW_OFPST13_METER_FEATURES_REQUEST,
                            rconn_get_version(swconn), 0);
         rconn_send(swconn, msg, NULL);
+        /* dump datapath group capabilities. */
+        msg = ofputil_encode_group_features_request(rconn_get_version(swconn));
+        rconn_send(swconn, msg, NULL);
     }
 
     bool ret = false;
@@ -164,23 +171,29 @@ ovs_feature_get_openflow_cap(const char *br_name)
 
         if (type == OFPTYPE_METER_FEATURES_STATS_REPLY) {
             struct ofputil_meter_features mf;
-            ofputil_decode_meter_features(oh, &mf);
-
-            bool old_state = supported_ovs_features & OVS_DP_METER_SUPPORT;
-            bool new_state = mf.max_meters > 0;
 
-            if (old_state != new_state) {
-                ret = true;
-                if (new_state) {
+            ofputil_decode_meter_features(oh, &mf);
+            if (memcmp(&supported_ovs_meter_features, &mf, sizeof mf)) {
+                supported_ovs_meter_features = mf;
+                if (supported_ovs_meter_features.max_meters) {
                     supported_ovs_features |= OVS_DP_METER_SUPPORT;
                 } else {
                     supported_ovs_features &= ~OVS_DP_METER_SUPPORT;
                 }
+                ret = true;
+            }
+        } else if (type == OFPTYPE_GROUP_FEATURES_STATS_REPLY) {
+            struct ofputil_group_features gf;
+
+            ofputil_decode_group_features_reply(oh, &gf);
+            if (memcmp(&supported_ovs_group_features, &gf, sizeof gf)) {
+                supported_ovs_group_features = gf;
+                ret = true;
             }
-            conn_seq_no = rconn_get_connection_seqno(swconn);
         } else if (type == OFPTYPE_ECHO_REQUEST) {
             rconn_send(swconn, ofputil_encode_echo_reply(oh), NULL);
         }
+        conn_seq_no = rconn_get_connection_seqno(swconn);
         ofpbuf_delete(msg);
     }
     rconn_run_wait(swconn);
@@ -229,3 +242,17 @@ ovs_feature_support_run(const struct smap *ovs_capabilities,
     }
     return updated;
 }
+
+/* Returns the number of meters the OVS datapath supports. */
+uint32_t
+ovs_feature_max_meters_get(void)
+{
+    return supported_ovs_meter_features.max_meters;
+}
+
+/* Returns the number of select groups the OVS datapath supports. */
+uint32_t
+ovs_feature_max_select_groups_get(void)
+{
+    return supported_ovs_group_features.max_groups[OFPGT11_SELECT];
+}
\ No newline at end of file