diff --git a/northd/aging.c b/northd/aging.c
index f626c72c8c..cf988b39c4 100644
--- a/northd/aging.c
+++ b/northd/aging.c
@@ -15,6 +15,7 @@
 
 #include <config.h>
 
+#include "en-global-config.h"
 #include "lib/inc-proc-eng.h"
 #include "lib/ovn-nb-idl.h"
 #include "lib/ovn-sb-idl.h"
@@ -100,15 +101,10 @@ aging_context_handle_timestamp(struct aging_context *ctx, int64_t timestamp)
 static uint32_t
 get_removal_limit(struct engine_node *node, const char *name)
 {
-    const struct nbrec_nb_global_table *nb_global_table =
-            EN_OVSDB_GET(engine_get_input("NB_nb_global", node));
-    const struct nbrec_nb_global *nb =
-            nbrec_nb_global_table_first(nb_global_table);
-    if (!nb) {
-        return 0;
-    }
+    struct ed_type_global_config *global_config =
+        engine_get_input_data("global_config", node);
 
-    return smap_get_uint(&nb->options, name, 0);
+    return smap_get_uint(&global_config->nb_options, name, 0);
 }
 
 /* MAC binding aging */
@@ -142,11 +138,14 @@ en_mac_binding_aging_run(struct engine_node *node, void *data OVS_UNUSED)
 {
     const struct engine_context *eng_ctx = engine_get_context();
     struct northd_data *northd_data = engine_get_input_data("northd", node);
+    struct ed_type_global_config *global_config =
+        engine_get_input_data("global_config", node);
+
     struct aging_waker *waker =
         engine_get_input_data("mac_binding_aging_waker", node);
 
     if (!eng_ctx->ovnsb_idl_txn ||
-        !northd_data->features.mac_binding_timestamp ||
+        !global_config->features.mac_binding_timestamp ||
         time_msec() < waker->next_wake_msec) {
         return;
     }
@@ -271,9 +270,11 @@ en_fdb_aging_run(struct engine_node *node, void *data OVS_UNUSED)
     const struct engine_context *eng_ctx = engine_get_context();
     struct northd_data *northd_data = engine_get_input_data("northd", node);
     struct aging_waker *waker = engine_get_input_data("fdb_aging_waker", node);
+    struct ed_type_global_config *global_config =
+        engine_get_input_data("global_config", node);
 
     if (!eng_ctx->ovnsb_idl_txn ||
-        !northd_data->features.fdb_timestamp ||
+        !global_config->features.fdb_timestamp ||
         time_msec() < waker->next_wake_msec) {
         return;
     }
diff --git a/northd/automake.mk b/northd/automake.mk
index 9707be7d8e..482270f5dd 100644
--- a/northd/automake.mk
+++ b/northd/automake.mk
@@ -8,6 +8,8 @@ northd_ovn_northd_SOURCES = \
 	northd/northd.c \
 	northd/northd.h \
 	northd/ovn-northd.c \
+	northd/en-global-config.c \
+	northd/en-global-config.h \
 	northd/en-northd.c \
 	northd/en-northd.h \
 	northd/en-lflow.c \
diff --git a/northd/en-global-config.c b/northd/en-global-config.c
new file mode 100644
index 0000000000..0d218f2ab5
--- /dev/null
+++ b/northd/en-global-config.c
@@ -0,0 +1,588 @@
+/*
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <config.h>
+
+#include <getopt.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+/* OVS includes */
+#include "openvswitch/vlog.h"
+
+/* OVN includes */
+#include "debug.h"
+#include "en-global-config.h"
+#include "include/ovn/features.h"
+#include "ipam.h"
+#include "lib/ovn-nb-idl.h"
+#include "lib/ovn-sb-idl.h"
+#include "northd.h"
+
+
+VLOG_DEFINE_THIS_MODULE(en_global_config);
+
+/* static function declarations. */
+static void northd_enable_all_features(struct ed_type_global_config *);
+static void build_chassis_features(const struct sbrec_chassis_table *,
+                                   struct chassis_features *);
+static bool chassis_features_changed(const struct chassis_features *,
+                                     const struct chassis_features *);
+static bool config_out_of_sync(const struct smap *config,
+                               const struct smap *saved_config,
+                               const char *key, bool must_be_present);
+static bool check_nb_options_out_of_sync(const struct nbrec_nb_global *,
+                                         struct ed_type_global_config *);
+static void update_sb_config_options_to_sbrec(struct ed_type_global_config *,
+                                              const struct sbrec_sb_global *);
+
+void *
+en_global_config_init(struct engine_node *node OVS_UNUSED,
+                      struct engine_arg *args OVS_UNUSED)
+{
+    struct ed_type_global_config *data = xzalloc(sizeof *data);
+    smap_init(&data->nb_options);
+    smap_init(&data->sb_options);
+    northd_enable_all_features(data);
+    return data;
+}
+
+void
+en_global_config_run(struct engine_node *node , void *data)
+{
+    const struct engine_context *eng_ctx = engine_get_context();
+    if (!eng_ctx->ovnnb_idl_txn || !eng_ctx->ovnsb_idl_txn) {
+        return;
+    }
+
+    const struct nbrec_nb_global_table *nb_global_table =
+        EN_OVSDB_GET(engine_get_input("NB_nb_global", node));
+    const struct sbrec_sb_global_table *sb_global_table =
+        EN_OVSDB_GET(engine_get_input("SB_sb_global", node));
+    const struct sbrec_chassis_table *sbrec_chassis_table =
+        EN_OVSDB_GET(engine_get_input("SB_chassis", node));
+
+    en_global_config_clear_tracked_data(data);
+
+    struct ed_type_global_config *config_data = data;
+
+    /* Sync ipsec configuration.
+     * Copy nb_cfg from northbound to southbound database.
+     * Also set up to update sb_cfg once our southbound transaction commits. */
+    const struct nbrec_nb_global *nb =
+        nbrec_nb_global_table_first(nb_global_table);
+    if (!nb) {
+        nb = nbrec_nb_global_insert(eng_ctx->ovnnb_idl_txn);
+    }
+
+    const char *mac_addr_prefix = set_mac_prefix(smap_get(&nb->options,
+                                                          "mac_prefix"));
+
+    const char *monitor_mac = smap_get(&nb->options, "svc_monitor_mac");
+    if (monitor_mac) {
+        if (eth_addr_from_string(monitor_mac,
+                                 &config_data->svc_monitor_mac_ea)) {
+            snprintf(config_data->svc_monitor_mac,
+                     sizeof config_data->svc_monitor_mac,
+                     ETH_ADDR_FMT,
+                     ETH_ADDR_ARGS(config_data->svc_monitor_mac_ea));
+        } else {
+            monitor_mac = NULL;
+        }
+    }
+
+    struct smap *options = &config_data->nb_options;
+    smap_destroy(options);
+    smap_clone(options, &nb->options);
+
+    smap_replace(options, "mac_prefix", mac_addr_prefix);
+
+    if (!monitor_mac) {
+        eth_addr_random(&config_data->svc_monitor_mac_ea);
+        snprintf(config_data->svc_monitor_mac,
+                 sizeof config_data->svc_monitor_mac, ETH_ADDR_FMT,
+                 ETH_ADDR_ARGS(config_data->svc_monitor_mac_ea));
+        smap_replace(options, "svc_monitor_mac",
+                     config_data->svc_monitor_mac);
+    }
+
+    char *max_tunid = xasprintf("%d",
+        get_ovn_max_dp_key_local(sbrec_chassis_table));
+    smap_replace(options, "max_tunid", max_tunid);
+    free(max_tunid);
+
+    char *ovn_internal_version = ovn_get_internal_version();
+    if (strcmp(ovn_internal_version,
+                smap_get_def(options, "northd_internal_version", ""))) {
+        smap_replace(options, "northd_internal_version",
+                     ovn_internal_version);
+        config_data->ovn_internal_version_changed = true;
+    } else {
+        config_data->ovn_internal_version_changed = false;
+    }
+
+    free(ovn_internal_version);
+
+    if (!smap_equal(&nb->options, options)) {
+        nbrec_nb_global_verify_options(nb);
+        nbrec_nb_global_set_options(nb, options);
+    }
+
+    if (smap_get_bool(&nb->options, "ignore_chassis_features", false)) {
+        northd_enable_all_features(config_data);
+    } else {
+        build_chassis_features(sbrec_chassis_table, &config_data->features);
+    }
+
+    init_debug_config(nb);
+
+    const struct sbrec_sb_global *sb =
+        sbrec_sb_global_table_first(sb_global_table);
+    if (!sb) {
+        sb = sbrec_sb_global_insert(eng_ctx->ovnsb_idl_txn);
+    }
+    if (nb->ipsec != sb->ipsec) {
+        sbrec_sb_global_set_ipsec(sb, nb->ipsec);
+    }
+
+    /* Set up SB_Global (depends on chassis features). */
+    update_sb_config_options_to_sbrec(config_data, sb);
+
+    engine_set_node_state(node, EN_UPDATED);
+}
+
+void en_global_config_cleanup(void *data OVS_UNUSED)
+{
+    struct ed_type_global_config *config_data = data;
+    smap_destroy(&config_data->nb_options);
+    smap_destroy(&config_data->sb_options);
+    destroy_debug_config();
+}
+
+void
+en_global_config_clear_tracked_data(void *data)
+{
+    struct ed_type_global_config *config_data = data;
+    config_data->tracked = false;
+    config_data->tracked_data.nb_options_changed = false;
+    config_data->tracked_data.chassis_features_changed = false;
+}
+
+bool
+global_config_nb_global_handler(struct engine_node *node, void *data)
+{
+    const struct nbrec_nb_global_table *nb_global_table =
+        EN_OVSDB_GET(engine_get_input("NB_nb_global", node));
+    const struct sbrec_sb_global_table *sb_global_table =
+        EN_OVSDB_GET(engine_get_input("SB_sb_global", node));
+
+    const struct nbrec_nb_global *nb =
+        nbrec_nb_global_table_first(nb_global_table);
+    if (!nb) {
+        return false;
+    }
+
+    const struct sbrec_sb_global *sb =
+        sbrec_sb_global_table_first(sb_global_table);
+    if (!sb) {
+        return false;
+    }
+
+    /* We are only interested in ipsec and options column. */
+    bool changes_relevant = false;
+    if (nbrec_nb_global_is_updated(nb, NBREC_NB_GLOBAL_COL_IPSEC)
+        || nbrec_nb_global_is_updated(nb, NBREC_NB_GLOBAL_COL_OPTIONS)) {
+        changes_relevant = true;
+    }
+
+    if (!changes_relevant) {
+        return true;
+    }
+
+    const struct engine_context *eng_ctx = engine_get_context();
+    if (!eng_ctx->ovnsb_idl_txn) {
+        return false;
+    }
+
+    if (nb->ipsec != sb->ipsec) {
+        sbrec_sb_global_set_ipsec(sb, nb->ipsec);
+    }
+
+    struct ed_type_global_config *config_data = data;
+    config_data->tracked = true;
+
+    if (smap_equal(&nb->options, &config_data->nb_options)) {
+        return true;
+    }
+
+    /* Return false if an option is out of sync and requires updating the
+     * NB config. (Like svc_monitor_mac, max_tunid and mac_prefix). */
+    /* Check if svc_monitor_mac has changed or not. */
+    if (config_out_of_sync(&nb->options, &config_data->nb_options,
+                           "svc_monitor_mac", true)) {
+        return false;
+    }
+
+    /* Check if max_tunid has changed or not. */
+    if (config_out_of_sync(&nb->options, &config_data->nb_options,
+                           "max_tunid", true)) {
+        return false;
+    }
+
+    /* Check if mac_prefix has changed or not. */
+    if (config_out_of_sync(&nb->options, &config_data->nb_options,
+                           "mac_prefix", true)) {
+        return false;
+    }
+
+    /* Check if ignore_chassis_features has changed or not. */
+    if (config_out_of_sync(&nb->options, &config_data->nb_options,
+                           "ignore_chassis_features", false)) {
+        return false;
+    }
+
+    /* Check if northd_internal_version has changed or not. */
+    if (config_out_of_sync(&nb->options, &config_data->nb_options,
+                           "northd_internal_version", false)) {
+        return false;
+    }
+
+    if (check_nb_options_out_of_sync(nb, config_data)) {
+        config_data->tracked_data.nb_options_changed = true;
+    }
+
+    smap_destroy(&config_data->nb_options);
+    smap_clone(&config_data->nb_options, &nb->options);
+
+    update_sb_config_options_to_sbrec(config_data, sb);
+
+    engine_set_node_state(node, EN_UPDATED);
+    return true;
+}
+
+bool
+global_config_sb_global_handler(struct engine_node *node, void *data)
+{
+    const struct sbrec_sb_global_table *sb_global_table =
+        EN_OVSDB_GET(engine_get_input("SB_sb_global", node));
+
+    const struct sbrec_sb_global *sb =
+        sbrec_sb_global_table_first(sb_global_table);
+    if (!sb) {
+        return false;
+    }
+
+    struct ed_type_global_config *config_data = data;
+
+    if (!smap_equal(&sb->options, &config_data->sb_options)) {
+        return false;
+    }
+
+    /* No need to update the engine node. */
+    return true;
+}
+
+bool
+global_config_sb_chassis_handler(struct engine_node *node, void *data)
+{
+    struct ed_type_global_config *config_data = data;
+
+    const struct sbrec_chassis_table *sbrec_chassis_table =
+        EN_OVSDB_GET(engine_get_input("SB_chassis", node));
+    const struct sbrec_chassis *chassis;
+
+    SBREC_CHASSIS_TABLE_FOR_EACH_TRACKED (chassis, sbrec_chassis_table) {
+        if (sbrec_chassis_is_new(chassis)
+            || sbrec_chassis_is_deleted(chassis)
+            || sbrec_chassis_is_updated(chassis,
+                                        SBREC_CHASSIS_COL_ENCAPS)) {
+            return false;
+        }
+
+        for (size_t i = 0; i < chassis->n_encaps; i++) {
+            if (sbrec_encap_row_get_seqno(chassis->encaps[i],
+                                          OVSDB_IDL_CHANGE_MODIFY) > 0) {
+                return false;
+            }
+        }
+    }
+
+    if (smap_get_bool(&config_data->nb_options, "ignore_chassis_features",
+                      false)) {
+        return true;
+    }
+
+    bool reevaluate_chassis_features = false;
+
+    /* Check and evaluate chassis features. */
+    SBREC_CHASSIS_TABLE_FOR_EACH_TRACKED (chassis, sbrec_chassis_table) {
+        if (sbrec_chassis_is_updated(chassis,
+                                        SBREC_CHASSIS_COL_OTHER_CONFIG)) {
+            reevaluate_chassis_features = true;
+            break;
+        }
+    }
+
+    if (!reevaluate_chassis_features) {
+        return true;
+    }
+
+    struct chassis_features present_features = config_data->features;
+
+    /* Enable all features before calling build_chassis_features() as
+    * build_chassis_features() only sets the feature flags to false. */
+    northd_enable_all_features(config_data);
+    build_chassis_features(sbrec_chassis_table, &config_data->features);
+
+    if (chassis_features_changed(&present_features, &config_data->features)) {
+        config_data->tracked_data.chassis_features_changed = true;
+        config_data->tracked = true;
+        engine_set_node_state(node, EN_UPDATED);
+    }
+
+    return true;
+}
+
+/* generic global config handler for any engine node which has global_config
+ * has an input node . */
+bool
+node_global_config_handler(struct engine_node *node, void *data OVS_UNUSED)
+{
+    struct ed_type_global_config *global_config =
+        engine_get_input_data("global_config", node);
+
+    if (!global_config->tracked
+        || global_config->tracked_data.chassis_features_changed
+        || global_config->tracked_data.nb_options_changed) {
+        return false;
+    }
+
+    return true;
+}
+
+/* static functions. */
+static void
+northd_enable_all_features(struct ed_type_global_config *data)
+{
+    data->features = (struct chassis_features) {
+        .ct_no_masked_label = true,
+        .mac_binding_timestamp = true,
+        .ct_lb_related = true,
+        .fdb_timestamp = true,
+        .ls_dpg_column = true,
+    };
+}
+
+static void
+build_chassis_features(const struct sbrec_chassis_table *sbrec_chassis_table,
+                       struct chassis_features *chassis_features)
+{
+    const struct sbrec_chassis *chassis;
+
+    SBREC_CHASSIS_TABLE_FOR_EACH (chassis, sbrec_chassis_table) {
+        /* Only consider local AZ chassis.  Remote ones don't install
+         * flows generated by the local northd.
+         */
+        if (smap_get_bool(&chassis->other_config, "is-remote", false)) {
+            continue;
+        }
+
+        bool ct_no_masked_label =
+            smap_get_bool(&chassis->other_config,
+                          OVN_FEATURE_CT_NO_MASKED_LABEL,
+                          false);
+        if (!ct_no_masked_label && chassis_features->ct_no_masked_label) {
+            chassis_features->ct_no_masked_label = false;
+        }
+
+        bool mac_binding_timestamp =
+            smap_get_bool(&chassis->other_config,
+                          OVN_FEATURE_MAC_BINDING_TIMESTAMP,
+                          false);
+        if (!mac_binding_timestamp &&
+            chassis_features->mac_binding_timestamp) {
+            chassis_features->mac_binding_timestamp = false;
+        }
+
+        bool ct_lb_related =
+            smap_get_bool(&chassis->other_config,
+                          OVN_FEATURE_CT_LB_RELATED,
+                          false);
+        if (!ct_lb_related &&
+            chassis_features->ct_lb_related) {
+            chassis_features->ct_lb_related = false;
+        }
+
+        bool fdb_timestamp =
+            smap_get_bool(&chassis->other_config,
+                          OVN_FEATURE_FDB_TIMESTAMP,
+                          false);
+        if (!fdb_timestamp &&
+            chassis_features->fdb_timestamp) {
+            chassis_features->fdb_timestamp = false;
+        }
+
+        bool ls_dpg_column =
+            smap_get_bool(&chassis->other_config,
+                          OVN_FEATURE_LS_DPG_COLUMN,
+                          false);
+        if (!ls_dpg_column &&
+            chassis_features->ls_dpg_column) {
+            chassis_features->ls_dpg_column = false;
+        }
+    }
+}
+
+static bool
+config_out_of_sync(const struct smap *config, const struct smap *saved_config,
+                   const char *key, bool must_be_present)
+{
+    const char *value = smap_get(config, key);
+    if (!value && must_be_present) {
+        return true;
+    }
+
+    const char *saved_value = smap_get(saved_config, key);
+    if (!saved_value && must_be_present) {
+        return true;
+    }
+
+    if (!value && !saved_value) {
+        return false;
+    }
+
+    if ((!value && saved_value) || (value && !saved_value)) {
+        return true;
+    }
+
+    return strcmp(value, saved_value);
+}
+
+static bool
+check_nb_options_out_of_sync(const struct nbrec_nb_global *nb,
+                             struct ed_type_global_config *config_data)
+{
+    if (config_out_of_sync(&nb->options, &config_data->nb_options,
+                           "mac_binding_removal_limit", false)) {
+        return true;
+    }
+
+    if (config_out_of_sync(&nb->options, &config_data->nb_options,
+                           "fdb_removal_limit", false)) {
+        return true;
+    }
+
+    if (config_out_of_sync(&nb->options, &config_data->nb_options,
+                           "controller_event", false)) {
+        return true;
+    }
+
+    if (config_out_of_sync(&nb->options, &config_data->nb_options,
+                           "ignore_lsp_down", false)) {
+        return true;
+    }
+
+    if (config_out_of_sync(&nb->options, &config_data->nb_options,
+                           "use_ct_inv_match", false)) {
+        return true;
+    }
+
+    if (config_out_of_sync(&nb->options, &config_data->nb_options,
+                           "default_acl_drop", false)) {
+        return true;
+    }
+
+    if (config_out_of_sync(&nb->options, &config_data->nb_options,
+                           "debug_drop_domain_id", false)) {
+        init_debug_config(nb);
+        return true;
+    }
+
+    if (config_out_of_sync(&nb->options, &config_data->nb_options,
+                           "debug_drop_collector_set", false)) {
+        init_debug_config(nb);
+        return true;
+    }
+
+    if (config_out_of_sync(&nb->options, &config_data->nb_options,
+                           "use_common_zone", false)) {
+        return true;
+    }
+
+    if (config_out_of_sync(&nb->options, &config_data->nb_options,
+                           "install_ls_lb_from_router", false)) {
+        return true;
+    }
+
+    return false;
+}
+
+static void
+update_sb_config_options_to_sbrec(struct ed_type_global_config *config_data,
+                                  const struct sbrec_sb_global *sb)
+{
+    struct smap *options = &config_data->sb_options;
+
+    smap_destroy(options);
+    smap_clone(options, &config_data->nb_options);
+
+    /* Inform ovn-controllers whether LB flows will use ct_mark (i.e., only
+     * if all chassis support it).  If not explicitly present in the database
+     * the default value to be used for this option is 'true'.
+     */
+    if (!config_data->features.ct_no_masked_label) {
+        smap_replace(options, "lb_hairpin_use_ct_mark", "false");
+    } else {
+        smap_remove(options, "lb_hairpin_use_ct_mark");
+    }
+
+    /* Hackaround SB_global.options overwrite by NB_Global.options for
+     * 'sbctl_probe_interval' option.
+     */
+    const char *sip = smap_get(&sb->options, "sbctl_probe_interval");
+    if (sip) {
+        smap_replace(options, "sbctl_probe_interval", sip);
+    }
+
+    if (!smap_equal(&sb->options, options)) {
+        sbrec_sb_global_set_options(sb, options);
+    }
+}
+
+static bool
+chassis_features_changed(const struct chassis_features *present,
+                         const struct chassis_features *updated)
+{
+    if (present->ct_no_masked_label != updated->ct_no_masked_label) {
+        return true;
+    }
+
+    if (present->mac_binding_timestamp != updated->mac_binding_timestamp) {
+        return true;
+    }
+
+    if (present->ct_lb_related != updated->ct_lb_related) {
+        return true;
+    }
+
+    if (present->fdb_timestamp != updated->fdb_timestamp) {
+        return true;
+    }
+
+    if (present->ls_dpg_column != updated->ls_dpg_column) {
+        return true;
+    }
+
+    return false;
+}
diff --git a/northd/en-global-config.h b/northd/en-global-config.h
new file mode 100644
index 0000000000..436bc7fa35
--- /dev/null
+++ b/northd/en-global-config.h
@@ -0,0 +1,65 @@
+#ifndef EN_GLOBAL_CONFIG_H
+#define EN_GLOBAL_CONFIG_H 1
+
+#include <config.h>
+
+/* OVS includes. */
+#include "lib/packets.h"
+#include "lib/smap.h"
+
+/* OVN includes. */
+#include "lib/inc-proc-eng.h"
+
+struct nbrec_nb_global;
+struct sbrec_sb_global;
+
+struct chassis_features {
+    bool ct_no_masked_label;
+    bool mac_binding_timestamp;
+    bool ct_lb_related;
+    bool fdb_timestamp;
+    bool ls_dpg_column;
+};
+
+struct global_config_tracked_data {
+    bool nb_options_changed;
+    bool chassis_features_changed;
+};
+
+/* struct which maintains the data of the engine node global_config. */
+struct ed_type_global_config {
+    struct smap nb_options;
+    struct smap sb_options;
+    const struct nbrec_nb_global *nb_global;
+    const struct sbrec_sb_global *sb_global;
+
+    /* MAC allocated for service monitor usage. Just one mac is allocated
+     * for this purpose and ovn-controller's on each chassis will make use
+     * of this mac when sending out the packets to monitor the services
+     * defined in Service_Monitor Southbound table. Since these packets
+     * are locally handled, having just one mac is good enough. */
+    char svc_monitor_mac[ETH_ADDR_STRLEN + 1];
+    struct eth_addr svc_monitor_mac_ea;
+
+    struct chassis_features features;
+
+    bool ovn_internal_version_changed;
+
+    bool tracked;
+    struct global_config_tracked_data tracked_data;
+};
+
+void *en_global_config_init(struct engine_node *, struct engine_arg *);
+void en_global_config_run(struct engine_node *, void *data);
+void en_global_config_cleanup(void *data);
+void en_global_config_clear_tracked_data(void *data);
+
+bool global_config_nb_global_handler(struct engine_node *, void *data);
+bool global_config_sb_global_handler(struct engine_node *, void *data);
+bool global_config_sb_chassis_handler(struct engine_node *, void *data);
+
+/* generic global config handler for any engine node which has global_config
+ * has an input node . */
+bool node_global_config_handler(struct engine_node *, void *data);
+
+#endif /* EN_GLOBAL_CONFIG_H */
diff --git a/northd/en-lflow.c b/northd/en-lflow.c
index 831b90da75..d06e694d1d 100644
--- a/northd/en-lflow.c
+++ b/northd/en-lflow.c
@@ -22,6 +22,7 @@
 #include "en-lr-nat.h"
 #include "en-lr-lb-nat-data.h"
 #include "en-ls-lb-acls.h"
+#include "en-global-config.h"
 #include "en-northd.h"
 #include "en-meters.h"
 #include "lflow-mgr.h"
@@ -77,10 +78,14 @@ lflow_get_input_data(struct engine_node *node,
     lflow_input->meter_groups = &sync_meters_data->meter_groups;
     lflow_input->lb_datapaths_map = &northd_data->lb_datapaths_map;
     lflow_input->svc_monitor_map = &northd_data->svc_monitor_map;
-    lflow_input->features = &northd_data->features;
-    lflow_input->ovn_internal_version_changed =
-                      northd_data->ovn_internal_version_changed;
     lflow_input->bfd_connections = NULL;
+
+    struct ed_type_global_config *global_config =
+        engine_get_input_data("global_config", node);
+    lflow_input->features = &global_config->features;
+    lflow_input->ovn_internal_version_changed =
+                      global_config->ovn_internal_version_changed;
+    lflow_input->svc_monitor_mac = global_config->svc_monitor_mac;
 }
 
 void en_lflow_run(struct engine_node *node, void *data)
diff --git a/northd/en-northd.c b/northd/en-northd.c
index 13e731cad9..d4338c6a45 100644
--- a/northd/en-northd.c
+++ b/northd/en-northd.c
@@ -19,6 +19,7 @@
 #include <stdio.h>
 
 #include "coverage.h"
+#include "en-global-config.h"
 #include "en-northd.h"
 #include "en-lb-data.h"
 #include "lib/inc-proc-eng.h"
@@ -65,8 +66,6 @@ northd_get_input_data(struct engine_node *node,
             engine_get_input("SB_fdb", node),
             "sbrec_fdb_by_dp_and_port");
 
-    input_data->nbrec_nb_global_table =
-        EN_OVSDB_GET(engine_get_input("NB_nb_global", node));
     input_data->nbrec_logical_switch_table =
         EN_OVSDB_GET(engine_get_input("NB_logical_switch", node));
     input_data->nbrec_logical_router_table =
@@ -78,8 +77,6 @@ northd_get_input_data(struct engine_node *node,
     input_data->nbrec_mirror_table =
         EN_OVSDB_GET(engine_get_input("NB_mirror", node));
 
-    input_data->sbrec_sb_global_table =
-        EN_OVSDB_GET(engine_get_input("SB_sb_global", node));
     input_data->sbrec_datapath_binding_table =
         EN_OVSDB_GET(engine_get_input("SB_datapath_binding", node));
     input_data->sbrec_port_binding_table =
@@ -109,6 +106,14 @@ northd_get_input_data(struct engine_node *node,
         engine_get_input_data("lb_data", node);
     input_data->lbs = &lb_data->lbs;
     input_data->lbgrps = &lb_data->lbgrps;
+
+    struct ed_type_global_config *global_config =
+        engine_get_input_data("global_config", node);
+    input_data->nb_options = &global_config->nb_options;
+    input_data->sb_options = &global_config->sb_options;
+    input_data->svc_monitor_mac = global_config->svc_monitor_mac;
+    input_data->svc_monitor_mac_ea = global_config->svc_monitor_mac_ea;
+    input_data->features = &global_config->features;
 }
 
 void
@@ -129,31 +134,6 @@ en_northd_run(struct engine_node *node, void *data)
                  eng_ctx->ovnsb_idl_txn);
     stopwatch_stop(OVNNB_DB_RUN_STOPWATCH_NAME, time_msec());
     engine_set_node_state(node, EN_UPDATED);
-
-}
-
-bool
-northd_nb_nb_global_handler(struct engine_node *node,
-                            void *data OVS_UNUSED)
-{
-    const struct nbrec_nb_global_table *nb_global_table
-        = EN_OVSDB_GET(engine_get_input("NB_nb_global", node));
-
-    const struct nbrec_nb_global *nb =
-        nbrec_nb_global_table_first(nb_global_table);
-
-    if (!nb) {
-        static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 1);
-        VLOG_WARN_RL(&rl, "NB_Global is updated but has no record.");
-        return false;
-    }
-
-    /* We care about the 'options' and 'ipsec' columns only. */
-    if (nbrec_nb_global_is_updated(nb, NBREC_NB_GLOBAL_COL_OPTIONS) ||
-        nbrec_nb_global_is_updated(nb, NBREC_NB_GLOBAL_COL_IPSEC)) {
-        return false;
-    }
-    return true;
 }
 
 bool
@@ -243,6 +223,20 @@ northd_lb_data_handler(struct engine_node *node, void *data)
     return true;
 }
 
+bool
+northd_global_config_handler(struct engine_node *node, void *data OVS_UNUSED)
+{
+    struct ed_type_global_config *global_config =
+        engine_get_input_data("global_config", node);
+
+    if (!global_config->tracked
+        || global_config->tracked_data.nb_options_changed) {
+        return false;
+    }
+
+    return true;
+}
+
 void
 *en_northd_init(struct engine_node *node OVS_UNUSED,
                 struct engine_arg *arg OVS_UNUSED)
diff --git a/northd/en-northd.h b/northd/en-northd.h
index 5a88871760..9b7bda32aa 100644
--- a/northd/en-northd.h
+++ b/northd/en-northd.h
@@ -14,7 +14,7 @@ void *en_northd_init(struct engine_node *node OVS_UNUSED,
                      struct engine_arg *arg);
 void en_northd_cleanup(void *data);
 void en_northd_clear_tracked_data(void *data);
-bool northd_nb_nb_global_handler(struct engine_node *, void *data OVS_UNUSED);
+bool northd_global_config_handler(struct engine_node *, void *data OVS_UNUSED);
 bool northd_nb_logical_switch_handler(struct engine_node *, void *data);
 bool northd_nb_logical_router_handler(struct engine_node *, void *data);
 bool northd_sb_port_binding_handler(struct engine_node *, void *data);
diff --git a/northd/en-sync-sb.c b/northd/en-sync-sb.c
index 7c22949f74..7a5d2f0ccd 100644
--- a/northd/en-sync-sb.c
+++ b/northd/en-sync-sb.c
@@ -23,6 +23,7 @@
 
 #include "en-lr-nat.h"
 #include "en-lr-lb-nat-data.h"
+#include "en-global-config.h"
 #include "en-sync-sb.h"
 #include "lib/inc-proc-eng.h"
 #include "lib/lb.h"
@@ -42,7 +43,8 @@ static void sync_addr_sets(struct ovsdb_idl_txn *ovnsb_txn,
                            const struct nbrec_address_set_table *,
                            const struct nbrec_port_group_table *,
                            const struct sbrec_address_set_table *,
-                           const struct lr_lb_nat_data_table *);
+                           const struct lr_lb_nat_data_table *,
+                           const char *svc_monitor_macp);
 static const struct sbrec_address_set *sb_address_set_lookup_by_name(
     struct ovsdb_idl_index *, const char *name);
 static void update_sb_addr_set(struct sorted_array *,
@@ -90,9 +92,12 @@ en_sync_to_sb_addr_set_run(struct engine_node *node, void *data OVS_UNUSED)
     const struct engine_context *eng_ctx = engine_get_context();
     const struct ed_type_lr_lb_nat_data *lr_lb_nat_data =
         engine_get_input_data("lr_lb_nat_data", node);
+    struct ed_type_global_config *global_config =
+        engine_get_input_data("global_config", node);
     sync_addr_sets(eng_ctx->ovnsb_idl_txn, nb_address_set_table,
                    nb_port_group_table, sb_address_set_table,
-                   &lr_lb_nat_data->lr_lbnats);
+                   &lr_lb_nat_data->lr_lbnats,
+                   global_config->svc_monitor_mac);
 
     engine_set_node_state(node, EN_UPDATED);
 }
@@ -218,12 +223,14 @@ en_sync_to_sb_lb_run(struct engine_node *node, void *data OVS_UNUSED)
 {
     const struct sbrec_load_balancer_table *sb_load_balancer_table =
         EN_OVSDB_GET(engine_get_input("SB_load_balancer", node));
+    struct ed_type_global_config *global_config =
+        engine_get_input_data("global_config", node);
     const struct engine_context *eng_ctx = engine_get_context();
     struct northd_data *northd_data = engine_get_input_data("northd", node);
 
     sync_lbs(eng_ctx->ovnsb_idl_txn, sb_load_balancer_table,
              &northd_data->ls_datapaths, &northd_data->lr_datapaths,
-             &northd_data->lb_datapaths_map, &northd_data->features);
+             &northd_data->lb_datapaths_map, &global_config->features);
     engine_set_node_state(node, EN_UPDATED);
 }
 
@@ -370,7 +377,8 @@ sync_addr_sets(struct ovsdb_idl_txn *ovnsb_txn,
                const struct nbrec_address_set_table *nb_address_set_table,
                const struct nbrec_port_group_table *nb_port_group_table,
                const struct sbrec_address_set_table *sb_address_set_table,
-               const struct lr_lb_nat_data_table *lr_lbnats)
+               const struct lr_lb_nat_data_table *lr_lbnats,
+               const char *svc_monitor_macp)
 {
     struct shash sb_address_sets = SHASH_INITIALIZER(&sb_address_sets);
 
@@ -381,8 +389,10 @@ sync_addr_sets(struct ovsdb_idl_txn *ovnsb_txn,
     }
 
     /* Service monitor MAC. */
-    const char *svc_monitor_macp = northd_get_svc_monitor_mac();
-    struct sorted_array svc = sorted_array_create(&svc_monitor_macp, 1, false);
+    struct sorted_array svc = {
+            .arr = &svc_monitor_macp,
+            .n = 1,
+    };
     sync_addr_set(ovnsb_txn, "svc_monitor_mac", &svc, &sb_address_sets);
     sorted_array_destroy(&svc);
 
diff --git a/northd/inc-proc-northd.c b/northd/inc-proc-northd.c
index 5c3d9faafa..99ac1079ec 100644
--- a/northd/inc-proc-northd.c
+++ b/northd/inc-proc-northd.c
@@ -30,6 +30,7 @@
 #include "openvswitch/poll-loop.h"
 #include "openvswitch/vlog.h"
 #include "inc-proc-northd.h"
+#include "en-global-config.h"
 #include "en-lb-data.h"
 #include "en-lr-lb-nat-data.h"
 #include "en-lr-nat.h"
@@ -149,6 +150,7 @@ static ENGINE_NODE(fdb_aging, "fdb_aging");
 static ENGINE_NODE(fdb_aging_waker, "fdb_aging_waker");
 static ENGINE_NODE(sync_to_sb_lb, "sync_to_sb_lb");
 static ENGINE_NODE(sync_to_sb_pb, "sync_to_sb_pb");
+static ENGINE_NODE_WITH_CLEAR_TRACK_DATA(global_config, "global_config");
 static ENGINE_NODE_WITH_CLEAR_TRACK_DATA(lb_data, "lb_data");
 static ENGINE_NODE_WITH_CLEAR_TRACK_DATA(lr_nat, "lr_nat");
 static ENGINE_NODE_WITH_CLEAR_TRACK_DATA(lr_lb_nat_data, "lr_lb_nat_data");
@@ -168,11 +170,17 @@ void inc_proc_northd_init(struct ovsdb_idl_loop *nb,
     engine_add_input(&en_lb_data, &en_nb_logical_router,
                      lb_data_logical_router_handler);
 
+    engine_add_input(&en_global_config, &en_nb_nb_global,
+                     global_config_nb_global_handler);
+    engine_add_input(&en_global_config, &en_sb_sb_global,
+                     global_config_sb_global_handler);
+    engine_add_input(&en_global_config, &en_sb_chassis,
+                     global_config_sb_chassis_handler);
+
     engine_add_input(&en_northd, &en_nb_mirror, NULL);
     engine_add_input(&en_northd, &en_nb_static_mac_binding, NULL);
     engine_add_input(&en_northd, &en_nb_chassis_template_var, NULL);
 
-    engine_add_input(&en_northd, &en_sb_sb_global, NULL);
     engine_add_input(&en_northd, &en_sb_chassis, NULL);
     engine_add_input(&en_northd, &en_sb_mirror, NULL);
     engine_add_input(&en_northd, &en_sb_meter, NULL);
@@ -185,11 +193,11 @@ void inc_proc_northd_init(struct ovsdb_idl_loop *nb,
     engine_add_input(&en_northd, &en_sb_fdb, NULL);
     engine_add_input(&en_northd, &en_sb_static_mac_binding, NULL);
     engine_add_input(&en_northd, &en_sb_chassis_template_var, NULL);
+    engine_add_input(&en_northd, &en_global_config,
+                     northd_global_config_handler);
 
     engine_add_input(&en_northd, &en_sb_port_binding,
                      northd_sb_port_binding_handler);
-    engine_add_input(&en_northd, &en_nb_nb_global,
-                     northd_nb_nb_global_handler);
     engine_add_input(&en_northd, &en_nb_logical_switch,
                      northd_nb_logical_switch_handler);
     engine_add_input(&en_northd, &en_nb_logical_router,
@@ -214,15 +222,17 @@ void inc_proc_northd_init(struct ovsdb_idl_loop *nb,
     engine_add_input(&en_ls_lbacls, &en_nb_logical_switch,
                      ls_lbacls_logical_switch_handler);
 
-    engine_add_input(&en_mac_binding_aging, &en_nb_nb_global, NULL);
     engine_add_input(&en_mac_binding_aging, &en_sb_mac_binding, NULL);
     engine_add_input(&en_mac_binding_aging, &en_northd, NULL);
     engine_add_input(&en_mac_binding_aging, &en_mac_binding_aging_waker, NULL);
+    engine_add_input(&en_mac_binding_aging, &en_global_config,
+                     node_global_config_handler);
 
-    engine_add_input(&en_fdb_aging, &en_nb_nb_global, NULL);
     engine_add_input(&en_fdb_aging, &en_sb_fdb, NULL);
     engine_add_input(&en_fdb_aging, &en_northd, NULL);
     engine_add_input(&en_fdb_aging, &en_fdb_aging_waker, NULL);
+    engine_add_input(&en_fdb_aging, &en_global_config,
+                     node_global_config_handler);
 
     engine_add_input(&en_sync_meters, &en_nb_acl, NULL);
     engine_add_input(&en_sync_meters, &en_nb_meter, NULL);
@@ -236,19 +246,23 @@ void inc_proc_northd_init(struct ovsdb_idl_loop *nb,
     engine_add_input(&en_lflow, &en_sb_multicast_group, NULL);
     engine_add_input(&en_lflow, &en_sb_igmp_group, NULL);
     engine_add_input(&en_lflow, &en_sb_logical_dp_group, NULL);
+    engine_add_input(&en_lflow, &en_global_config,
+                     node_global_config_handler);
     engine_add_input(&en_lflow, &en_northd, lflow_northd_handler);
     engine_add_input(&en_lflow, &en_port_group, lflow_port_group_handler);
     engine_add_input(&en_lflow, &en_lr_lb_nat_data,
                      lflow_lr_lb_nat_data_handler);
     engine_add_input(&en_lflow, &en_ls_lbacls, lflow_ls_lbacls_handler);
 
+    engine_add_input(&en_sync_to_sb_addr_set, &en_northd, NULL);
+    engine_add_input(&en_sync_to_sb_addr_set, &en_lr_lb_nat_data, NULL);
+    engine_add_input(&en_sync_to_sb_addr_set, &en_sb_address_set, NULL);
     engine_add_input(&en_sync_to_sb_addr_set, &en_nb_address_set,
                      sync_to_sb_addr_set_nb_address_set_handler);
     engine_add_input(&en_sync_to_sb_addr_set, &en_nb_port_group,
                      sync_to_sb_addr_set_nb_port_group_handler);
-    engine_add_input(&en_sync_to_sb_addr_set, &en_northd, NULL);
-    engine_add_input(&en_sync_to_sb_addr_set, &en_lr_lb_nat_data, NULL);
-    engine_add_input(&en_sync_to_sb_addr_set, &en_sb_address_set, NULL);
+    engine_add_input(&en_sync_to_sb_addr_set, &en_global_config,
+                     node_global_config_handler);
 
     engine_add_input(&en_port_group, &en_nb_port_group,
                      port_group_nb_port_group_handler);
@@ -258,6 +272,8 @@ void inc_proc_northd_init(struct ovsdb_idl_loop *nb,
      * table too (because of the explicit dependency in the schema). */
     engine_add_input(&en_port_group, &en_northd, engine_noop_handler);
 
+    engine_add_input(&en_sync_to_sb_lb, &en_global_config,
+                     node_global_config_handler);
     engine_add_input(&en_sync_to_sb_lb, &en_northd,
                      sync_to_sb_lb_northd_handler);
     engine_add_input(&en_sync_to_sb_lb, &en_sb_load_balancer,
@@ -362,11 +378,11 @@ void inc_proc_northd_init(struct ovsdb_idl_loop *nb,
                                 "sbrec_fdb_by_dp_and_port",
                                 sbrec_fdb_by_dp_and_port);
 
-    struct northd_data *northd_data =
-        engine_get_internal_data(&en_northd);
+    struct ed_type_global_config *global_config =
+        engine_get_internal_data(&en_global_config);
     unixctl_command_register("debug/chassis-features-list", "", 0, 0,
                              chassis_features_list,
-                             &northd_data->features);
+                             &global_config->features);
 }
 
 /* Returns true if the incremental processing ended up updating nodes. */
diff --git a/northd/northd.c b/northd/northd.c
index eb19e5be81..0bf987ad94 100644
--- a/northd/northd.c
+++ b/northd/northd.c
@@ -43,6 +43,7 @@
 #include "lflow-mgr.h"
 #include "memory.h"
 #include "northd.h"
+#include "en-global-config.h"
 #include "en-lb-data.h"
 #include "en-lr-nat.h"
 #include "en-lr-lb-nat-data.h"
@@ -77,14 +78,6 @@ static bool install_ls_lb_from_router;
 /* Use common zone for SNAT and DNAT if this option is set to "true". */
 static bool use_common_zone = false;
 
-/* MAC allocated for service monitor usage. Just one mac is allocatedg5534
- * for this purpose and ovn-controller's on each chassis will make use
- * of this mac when sending out the packets to monitor the services
- * defined in Service_Monitor Southbound table. Since these packets
- * all locally handled, having just one mac is good enough. */
-static char svc_monitor_mac[ETH_ADDR_STRLEN + 1];
-static struct eth_addr svc_monitor_mac_ea;
-
 /* If this option is 'true' northd will make use of ct.inv match fields.
  * Otherwise, it will avoid using it.  The default is true. */
 static bool use_ct_inv_match = true;
@@ -295,66 +288,6 @@ ovn_stage_to_datapath_type(enum ovn_stage stage)
     }
 }
 
-static void
-build_chassis_features(const struct sbrec_chassis_table *sbrec_chassis_table,
-                       struct chassis_features *chassis_features)
-{
-    const struct sbrec_chassis *chassis;
-
-    SBREC_CHASSIS_TABLE_FOR_EACH (chassis, sbrec_chassis_table) {
-        /* Only consider local AZ chassis.  Remote ones don't install
-         * flows generated by the local northd.
-         */
-        if (smap_get_bool(&chassis->other_config, "is-remote", false)) {
-            continue;
-        }
-
-        bool ct_no_masked_label =
-            smap_get_bool(&chassis->other_config,
-                          OVN_FEATURE_CT_NO_MASKED_LABEL,
-                          false);
-        if (!ct_no_masked_label && chassis_features->ct_no_masked_label) {
-            chassis_features->ct_no_masked_label = false;
-        }
-
-        bool mac_binding_timestamp =
-            smap_get_bool(&chassis->other_config,
-                          OVN_FEATURE_MAC_BINDING_TIMESTAMP,
-                          false);
-        if (!mac_binding_timestamp &&
-            chassis_features->mac_binding_timestamp) {
-            chassis_features->mac_binding_timestamp = false;
-        }
-
-        bool ct_lb_related =
-            smap_get_bool(&chassis->other_config,
-                          OVN_FEATURE_CT_LB_RELATED,
-                          false);
-        if (!ct_lb_related &&
-            chassis_features->ct_lb_related) {
-            chassis_features->ct_lb_related = false;
-        }
-
-        bool fdb_timestamp =
-            smap_get_bool(&chassis->other_config,
-                          OVN_FEATURE_FDB_TIMESTAMP,
-                          false);
-        if (!fdb_timestamp &&
-            chassis_features->fdb_timestamp) {
-            chassis_features->fdb_timestamp = false;
-        }
-
-        bool ls_dpg_column =
-            smap_get_bool(&chassis->other_config,
-                          OVN_FEATURE_LS_DPG_COLUMN,
-                          false);
-        if (!ls_dpg_column &&
-            chassis_features->ls_dpg_column) {
-            chassis_features->ls_dpg_column = false;
-        }
-    }
-}
-
 static uint32_t
 allocate_queueid(unsigned long *queue_id_bitmap)
 {
@@ -946,7 +879,7 @@ is_vxlan_mode(const struct sbrec_chassis_table *sbrec_chassis_table)
     return false;
 }
 
-static uint32_t
+uint32_t
 get_ovn_max_dp_key_local(const struct sbrec_chassis_table *sbrec_chassis_table)
 {
     if (is_vxlan_mode(sbrec_chassis_table)) {
@@ -3354,6 +3287,8 @@ create_or_get_service_mon(struct ovsdb_idl_txn *ovnsb_txn,
 static void
 ovn_lb_svc_create(struct ovsdb_idl_txn *ovnsb_txn,
                   const struct ovn_northd_lb *lb,
+                  const char *svc_monitor_mac,
+                  const struct eth_addr *svc_monitor_mac_ea,
                   struct hmap *monitor_map, struct hmap *ls_ports,
                   struct sset *svc_monitor_lsps)
 {
@@ -3399,7 +3334,7 @@ ovn_lb_svc_create(struct ovsdb_idl_txn *ovnsb_txn,
             struct eth_addr ea;
             if (!mon_info->sbrec_mon->src_mac ||
                 !eth_addr_from_string(mon_info->sbrec_mon->src_mac, &ea) ||
-                !eth_addr_equals(ea, svc_monitor_mac_ea)) {
+                !eth_addr_equals(ea, *svc_monitor_mac_ea)) {
                 sbrec_service_monitor_set_src_mac(mon_info->sbrec_mon,
                                                   svc_monitor_mac);
             }
@@ -3724,6 +3659,8 @@ static void
 build_lb_svcs(
     struct ovsdb_idl_txn *ovnsb_txn,
     const struct sbrec_service_monitor_table *sbrec_service_monitor_table,
+    const char *svc_monitor_mac,
+    const struct eth_addr *svc_monitor_mac_ea,
     struct hmap *ls_ports, struct hmap *lb_dps_map,
     struct sset *svc_monitor_lsps,
     struct hmap *svc_monitor_map)
@@ -3742,7 +3679,8 @@ build_lb_svcs(
 
     struct ovn_lb_datapaths *lb_dps;
     HMAP_FOR_EACH (lb_dps, hmap_node, lb_dps_map) {
-        ovn_lb_svc_create(ovnsb_txn, lb_dps->lb, svc_monitor_map, ls_ports,
+        ovn_lb_svc_create(ovnsb_txn, lb_dps->lb, svc_monitor_mac,
+                          svc_monitor_mac_ea, svc_monitor_map, ls_ports,
                           svc_monitor_lsps);
     }
 
@@ -3834,13 +3772,16 @@ static void
 build_lb_port_related_data(
     struct ovsdb_idl_txn *ovnsb_txn,
     const struct sbrec_service_monitor_table *sbrec_service_monitor_table,
+    const char *svc_monitor_mac,
+    const struct eth_addr *svc_monitor_mac_ea,
     struct ovn_datapaths *lr_datapaths, struct hmap *ls_ports,
     struct hmap *lb_dps_map, struct hmap *lb_group_dps_map,
     struct sset *svc_monitor_lsps,
     struct hmap *svc_monitor_map)
 {
     build_lrouter_lbs_check(lr_datapaths);
-    build_lb_svcs(ovnsb_txn, sbrec_service_monitor_table, ls_ports, lb_dps_map,
+    build_lb_svcs(ovnsb_txn, sbrec_service_monitor_table, svc_monitor_mac,
+                  svc_monitor_mac_ea, ls_ports, lb_dps_map,
                   svc_monitor_lsps, svc_monitor_map);
     build_lswitch_lbs_from_lrouter(lr_datapaths, lb_dps_map, lb_group_dps_map);
 }
@@ -9365,6 +9306,7 @@ build_lswitch_arp_nd_responder_default(struct ovn_datapath *od,
 static void
 build_lswitch_arp_nd_service_monitor(const struct ovn_northd_lb *lb,
                                      const struct hmap *ls_ports,
+                                     const char *svc_monitor_mac,
                                      struct lflow_table *lflows,
                                      struct ds *actions,
                                      struct ds *match,
@@ -15770,6 +15712,7 @@ struct lswitch_flow_build_info {
     struct ds match;
     struct ds actions;
     size_t thread_lflow_counter;
+    const char *svc_monitor_mac;
 };
 
 /* Helper function to combine all lflow generation which is iterated by
@@ -15997,6 +15940,7 @@ build_lflows_thread(void *arg)
                     }
                     build_lswitch_arp_nd_service_monitor(lb_dps->lb,
                                                          lsi->ls_ports,
+                                                         lsi->svc_monitor_mac,
                                                          lsi->lflows,
                                                          &lsi->match,
                                                          &lsi->actions,
@@ -16119,7 +16063,8 @@ build_lswitch_and_lrouter_flows(const struct ovn_datapaths *ls_datapaths,
                                 const struct hmap *lb_dps_map,
                                 const struct hmap *svc_monitor_map,
                                 const struct hmap *bfd_connections,
-                                const struct chassis_features *features)
+                                const struct chassis_features *features,
+                                const char *svc_monitor_mac)
 {
 
     char *svc_check_match = xasprintf("eth.dst == %s", svc_monitor_mac);
@@ -16152,6 +16097,7 @@ build_lswitch_and_lrouter_flows(const struct ovn_datapaths *ls_datapaths,
             lsiv[index].features = features;
             lsiv[index].svc_check_match = svc_check_match;
             lsiv[index].thread_lflow_counter = 0;
+            lsiv[index].svc_monitor_mac = svc_monitor_mac;
             ds_init(&lsiv[index].match);
             ds_init(&lsiv[index].actions);
 
@@ -16191,6 +16137,7 @@ build_lswitch_and_lrouter_flows(const struct ovn_datapaths *ls_datapaths,
             .bfd_connections = bfd_connections,
             .features = features,
             .svc_check_match = svc_check_match,
+            .svc_monitor_mac = svc_monitor_mac,
             .match = DS_EMPTY_INITIALIZER,
             .actions = DS_EMPTY_INITIALIZER,
         };
@@ -16232,6 +16179,7 @@ build_lswitch_and_lrouter_flows(const struct ovn_datapaths *ls_datapaths,
         stopwatch_start(LFLOWS_LBS_STOPWATCH_NAME, time_msec());
         HMAP_FOR_EACH (lb_dps, hmap_node, lb_dps_map) {
             build_lswitch_arp_nd_service_monitor(lb_dps->lb, lsi.ls_ports,
+                                                 lsi.svc_monitor_mac,
                                                  lsi.lflows, &lsi.actions,
                                                  &lsi.match,
                                                  lb_dps->lflow_ref);
@@ -16350,7 +16298,8 @@ void build_lflows(struct ovsdb_idl_txn *ovnsb_txn,
                                     input_data->lb_datapaths_map,
                                     input_data->svc_monitor_map,
                                     input_data->bfd_connections,
-                                    input_data->features);
+                                    input_data->features,
+                                    input_data->svc_monitor_mac);
 
     if (parallelization_state == STATE_INIT_HASH_SIZES) {
         parallelization_state = STATE_USE_PARALLELIZATION;
@@ -16622,6 +16571,7 @@ lflow_handle_northd_lb_changes(struct ovsdb_idl_txn *ovnsb_txn,
         struct ds actions = DS_EMPTY_INITIALIZER;
 
         build_lswitch_arp_nd_service_monitor(lb_dps->lb, lflow_input->ls_ports,
+                                             lflow_input->svc_monitor_mac,
                                              lflows, &actions,
                                              &match, lb_dps->lflow_ref);
         build_lrouter_defrag_flows_for_lb(lb_dps, lflows,
@@ -17384,18 +17334,6 @@ destroy_datapaths_and_ports(struct ovn_datapaths *ls_datapaths,
     ovn_datapaths_destroy(lr_datapaths);
 }
 
-static void
-northd_enable_all_features(struct northd_data *data)
-{
-    data->features = (struct chassis_features) {
-        .ct_no_masked_label = true,
-        .mac_binding_timestamp = true,
-        .ct_lb_related = true,
-        .fdb_timestamp = true,
-        .ls_dpg_column = true,
-    };
-}
-
 void
 northd_init(struct northd_data *data)
 {
@@ -17406,8 +17344,6 @@ northd_init(struct northd_data *data)
     hmap_init(&data->lb_datapaths_map);
     hmap_init(&data->lb_group_datapaths_map);
     ovs_list_init(&data->lr_list);
-    northd_enable_all_features(data);
-    data->ovn_internal_version_changed = false;
     sset_init(&data->svc_monitor_lsps);
     hmap_init(&data->svc_monitor_map);
     data->change_tracked = false;
@@ -17448,7 +17384,6 @@ northd_destroy(struct northd_data *data)
     destroy_datapaths_and_ports(&data->ls_datapaths, &data->lr_datapaths,
                                 &data->ls_ports, &data->lr_ports,
                                 &data->lr_list);
-    destroy_debug_config();
 
     sset_destroy(&data->svc_monitor_lsps);
     destroy_northd_tracked_data(data);
@@ -17465,83 +17400,22 @@ ovnnb_db_run(struct northd_input *input_data,
     }
     stopwatch_start(BUILD_LFLOWS_CTX_STOPWATCH_NAME, time_msec());
 
-    /* Sync ipsec configuration.
-     * Copy nb_cfg from northbound to southbound database.
-     * Also set up to update sb_cfg once our southbound transaction commits. */
-    const struct nbrec_nb_global *nb = nbrec_nb_global_table_first(
-                                       input_data->nbrec_nb_global_table);
-    if (!nb) {
-        nb = nbrec_nb_global_insert(ovnnb_txn);
-    }
-
-    const char *mac_addr_prefix = set_mac_prefix(smap_get(&nb->options,
-                                                          "mac_prefix"));
-
-    const char *monitor_mac = smap_get(&nb->options, "svc_monitor_mac");
-    if (monitor_mac) {
-        if (eth_addr_from_string(monitor_mac, &svc_monitor_mac_ea)) {
-            snprintf(svc_monitor_mac, sizeof svc_monitor_mac,
-                     ETH_ADDR_FMT, ETH_ADDR_ARGS(svc_monitor_mac_ea));
-        } else {
-            monitor_mac = NULL;
-        }
-    }
-
-    struct smap options;
-    smap_clone(&options, &nb->options);
-
-    smap_replace(&options, "mac_prefix", mac_addr_prefix);
-
-    if (!monitor_mac) {
-        eth_addr_random(&svc_monitor_mac_ea);
-        snprintf(svc_monitor_mac, sizeof svc_monitor_mac,
-                 ETH_ADDR_FMT, ETH_ADDR_ARGS(svc_monitor_mac_ea));
-        smap_replace(&options, "svc_monitor_mac", svc_monitor_mac);
-    }
-
-    char *max_tunid = xasprintf("%d",
-        get_ovn_max_dp_key_local(input_data->sbrec_chassis_table));
-    smap_replace(&options, "max_tunid", max_tunid);
-    free(max_tunid);
-
-    char *ovn_internal_version = ovn_get_internal_version();
-    if (!strcmp(ovn_internal_version,
-                smap_get_def(&options, "northd_internal_version", ""))) {
-        data->ovn_internal_version_changed = false;
-    } else {
-        smap_replace(&options, "northd_internal_version",
-                     ovn_internal_version);
-    }
-    free(ovn_internal_version);
-
-    if (!smap_equal(&nb->options, &options)) {
-        nbrec_nb_global_verify_options(nb);
-        nbrec_nb_global_set_options(nb, &options);
-    }
-
-    use_ct_inv_match = smap_get_bool(&nb->options,
+    use_ct_inv_match = smap_get_bool(input_data->nb_options,
                                      "use_ct_inv_match", true);
 
     /* deprecated, use --event instead */
-    controller_event_en = smap_get_bool(&nb->options,
+    controller_event_en = smap_get_bool(input_data->nb_options,
                                         "controller_event", false);
-    check_lsp_is_up = !smap_get_bool(&nb->options,
+    check_lsp_is_up = !smap_get_bool(input_data->nb_options,
                                      "ignore_lsp_down", true);
-    default_acl_drop = smap_get_bool(&nb->options, "default_acl_drop", false);
+    default_acl_drop = smap_get_bool(input_data->nb_options,
+                                     "default_acl_drop", false);
 
-    install_ls_lb_from_router = smap_get_bool(&nb->options,
+    install_ls_lb_from_router = smap_get_bool(input_data->nb_options,
                                               "install_ls_lb_from_router",
                                               false);
-    use_common_zone = smap_get_bool(&nb->options, "use_common_zone", false);
-
-    if (smap_get_bool(&nb->options, "ignore_chassis_features", false)) {
-        northd_enable_all_features(data);
-    } else {
-        build_chassis_features(input_data->sbrec_chassis_table,
-                               &data->features);
-    }
-
-    init_debug_config(nb);
+    use_common_zone = smap_get_bool(input_data->nb_options, "use_common_zone",
+                                    false);
 
     build_datapaths(ovnsb_txn,
                     input_data->nbrec_logical_switch_table,
@@ -17566,6 +17440,8 @@ ovnnb_db_run(struct northd_input *input_data,
                 &data->ls_ports, &data->lr_ports);
     build_lb_port_related_data(ovnsb_txn,
                                input_data->sbrec_service_monitor_table,
+                               input_data->svc_monitor_mac,
+                               &input_data->svc_monitor_mac_ea,
                                &data->lr_datapaths, &data->ls_ports,
                                &data->lb_datapaths_map,
                                &data->lb_group_datapaths_map,
@@ -17598,38 +17474,6 @@ ovnnb_db_run(struct northd_input *input_data,
                               &data->ls_datapaths.datapaths);
     stopwatch_stop(CLEAR_LFLOWS_CTX_STOPWATCH_NAME, time_msec());
 
-    /* Set up SB_Global (depends on chassis features). */
-    const struct sbrec_sb_global *sb = sbrec_sb_global_table_first(
-                                       input_data->sbrec_sb_global_table);
-    if (!sb) {
-        sb = sbrec_sb_global_insert(ovnsb_txn);
-    }
-    if (nb->ipsec != sb->ipsec) {
-        sbrec_sb_global_set_ipsec(sb, nb->ipsec);
-    }
-
-    /* Inform ovn-controllers whether LB flows will use ct_mark (i.e., only
-     * if all chassis support it).  If not explicitly present in the database
-     * the default value to be used for this option is 'true'.
-     */
-    if (!data->features.ct_no_masked_label) {
-        smap_replace(&options, "lb_hairpin_use_ct_mark", "false");
-    } else {
-        smap_remove(&options, "lb_hairpin_use_ct_mark");
-    }
-
-    /* Hackaround SB_global.options overwrite by NB_Global.options for
-     * 'sbctl_probe_interval' option.
-     */
-    const char *sip = smap_get(&sb->options, "sbctl_probe_interval");
-    if (sip) {
-        smap_replace(&options, "sbctl_probe_interval", sip);
-    }
-
-    if (!smap_equal(&sb->options, &options)) {
-        sbrec_sb_global_set_options(sb, &options);
-    }
-    smap_destroy(&options);
 }
 
 /* Stores the set of chassis which references an ha_chassis_group.
@@ -17920,12 +17764,6 @@ ovnsb_db_run(struct ovsdb_idl_txn *ovnnb_txn,
     ovn_update_ipv6_prefix(lr_ports);
 }
 
-const char *
-northd_get_svc_monitor_mac(void)
-{
-    return svc_monitor_mac;
-}
-
 const struct ovn_datapath *
 northd_get_datapath_for_port(const struct hmap *ls_ports,
                              const char *port_name)
diff --git a/northd/northd.h b/northd/northd.h
index 338502f022..c55041c6ed 100644
--- a/northd/northd.h
+++ b/northd/northd.h
@@ -27,7 +27,6 @@
 
 struct northd_input {
     /* Northbound table references */
-    const struct nbrec_nb_global_table *nbrec_nb_global_table;
     const struct nbrec_logical_switch_table *nbrec_logical_switch_table;
     const struct nbrec_logical_router_table *nbrec_logical_router_table;
     const struct nbrec_static_mac_binding_table
@@ -37,7 +36,6 @@ struct northd_input {
     const struct nbrec_mirror_table *nbrec_mirror_table;
 
     /* Southbound table references */
-    const struct sbrec_sb_global_table *sbrec_sb_global_table;
     const struct sbrec_datapath_binding_table *sbrec_datapath_binding_table;
     const struct sbrec_port_binding_table *sbrec_port_binding_table;
     const struct sbrec_mac_binding_table *sbrec_mac_binding_table;
@@ -57,6 +55,13 @@ struct northd_input {
     const struct hmap *lbs;
     const struct hmap *lbgrps;
 
+    /* Global config data node inputs. */
+    const struct smap *nb_options;
+    const struct smap *sb_options;
+    const char *svc_monitor_mac;
+    struct eth_addr svc_monitor_mac_ea;
+    const struct chassis_features *features;
+
     /* Indexes */
     struct ovsdb_idl_index *sbrec_chassis_by_name;
     struct ovsdb_idl_index *sbrec_chassis_by_hostname;
@@ -66,14 +71,6 @@ struct northd_input {
     struct ovsdb_idl_index *sbrec_fdb_by_dp_and_port;
 };
 
-struct chassis_features {
-    bool ct_no_masked_label;
-    bool mac_binding_timestamp;
-    bool ct_lb_related;
-    bool fdb_timestamp;
-    bool ls_dpg_column;
-};
-
 /* A collection of datapaths. E.g. all logical switch datapaths, or all
  * logical router datapaths. */
 struct ovn_datapaths {
@@ -197,8 +194,6 @@ struct northd_data {
     struct hmap lb_datapaths_map;
     struct hmap lb_group_datapaths_map;
     struct ovs_list lr_list;
-    bool ovn_internal_version_changed;
-    struct chassis_features features;
     struct sset svc_monitor_lsps;
     struct hmap svc_monitor_map;
     /* Indicates if northd engine node has changes tracked or not. */
@@ -235,6 +230,7 @@ struct lflow_input {
     const struct chassis_features *features;
     const struct hmap *svc_monitor_map;
     bool ovn_internal_version_changed;
+    const char *svc_monitor_mac;
 };
 
 extern int parallelization_state;
@@ -753,8 +749,6 @@ void bfd_cleanup_connections(const struct nbrec_bfd_table *,
                              struct hmap *bfd_map);
 void run_update_worker_pool(int n_threads);
 
-const char *northd_get_svc_monitor_mac(void);
-
 const struct ovn_datapath *northd_get_datapath_for_port(
     const struct hmap *ls_ports, const char *port_name);
 void sync_lbs(struct ovsdb_idl_txn *, const struct sbrec_load_balancer_table *,
@@ -787,4 +781,6 @@ bool lrouter_port_ipv4_reachable(const struct ovn_port *, ovs_be32 addr);
 bool lrouter_port_ipv6_reachable(const struct ovn_port *,
                                  const struct in6_addr *);
 
+uint32_t get_ovn_max_dp_key_local(const struct sbrec_chassis_table *);
+
 #endif /* NORTHD_H */
diff --git a/tests/ovn-northd.at b/tests/ovn-northd.at
index e083c8925f..ba30f4b84c 100644
--- a/tests/ovn-northd.at
+++ b/tests/ovn-northd.at
@@ -8698,7 +8698,7 @@ AT_CHECK([grep "ls_in_lb " S1flows | sed 's/table=../table=??/' | sort], [0], [d
   table=??(ls_in_lb           ), priority=0    , match=(1), action=(next;)
 ])
 
-ovn-nbctl --wait=sb set NB_Global . options:install_ls_lb_from_router=true
+check ovn-nbctl --wait=sb set NB_Global . options:install_ls_lb_from_router=true
 
 ovn-sbctl dump-flows S0 > S0flows
 ovn-sbctl dump-flows S1 > S1flows
@@ -8717,6 +8717,7 @@ AT_CHECK([grep "ls_in_lb " S1flows | sed 's/table=../table=??/' | sort], [0], [d
   table=??(ls_in_lb           ), priority=120  , match=(ct.new && ip4.dst == 172.16.0.11 && tcp.dst == 8080), action=(reg0[[1]] = 0; ct_lb_mark(backends=10.0.0.2:8080);)
 ])
 
+
 ovn-sbctl get datapath S0 _uuid > dp_uuids
 ovn-sbctl get datapath S1 _uuid >> dp_uuids
 lb_dp_group=$(ovn-sbctl --bare --columns ls_datapath_group find Load_Balancer name=lb0)
@@ -8725,7 +8726,7 @@ AT_CHECK_UNQUOTED([ovn-sbctl --bare --columns _uuid,datapaths find Logical_DP_Gr
 $(cat dp_uuids | sort)
 ])
 
-ovn-nbctl --wait=sb set NB_Global . options:install_ls_lb_from_router=false
+check ovn-nbctl --wait=sb set NB_Global . options:install_ls_lb_from_router=false
 
 ovn-sbctl dump-flows S0 > S0flows
 ovn-sbctl dump-flows S1 > S1flows
@@ -9083,12 +9084,11 @@ $4
 AS_BOX([Create new PG1 and PG2])
 check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
 check ovn-nbctl --wait=sb -- pg-add pg1 -- pg-add pg2
-dnl The northd node should not recompute, it should handle nb_global update
-dnl though, therefore "compute: 1".
+dnl The northd node should not recompute.
 AT_CHECK([as northd ovn-appctl -t NORTHD_TYPE inc-engine/show-stats northd], [0], [dnl
 Node: northd
 - recompute:            0
-- compute:              1
+- compute:              0
 - abort:                0
 ])
 dnl The port_group node recomputes every time a NB port group is added/deleted.
@@ -9121,12 +9121,11 @@ check ovn-nbctl --wait=sb         \
 check_column "sw1.1" sb:Port_Group ports name="${sw1_key}_pg1"
 check_column "sw2.1" sb:Port_Group ports name="${sw2_key}_pg1"
 
-dnl The northd node should not recompute, it should handle nb_global update
-dnl though, therefore "compute: 1".
+dnl The northd node should not recompute.
 AT_CHECK([as northd ovn-appctl -t NORTHD_TYPE inc-engine/show-stats northd], [0], [dnl
 Node: northd
 - recompute:            0
-- compute:              1
+- compute:              0
 - abort:                0
 ])
 dnl The port_group node recomputes also every time a port from a new switch
@@ -9158,12 +9157,11 @@ check_column "sw2.1" sb:Port_Group ports name="${sw2_key}_pg1"
 check_column "sw1.2" sb:Port_Group ports name="${sw1_key}_pg2"
 check_column "sw2.2" sb:Port_Group ports name="${sw2_key}_pg2"
 
-dnl The northd node should not recompute, it should handle nb_global update
-dnl though, therefore "compute: 1".
+dnl The northd node should not recompute.
 AT_CHECK([as northd ovn-appctl -t NORTHD_TYPE inc-engine/show-stats northd], [0], [dnl
 Node: northd
 - recompute:            0
-- compute:              1
+- compute:              0
 - abort:                0
 ])
 dnl The port_group node recomputes also every time a port from a new switch
@@ -9196,12 +9194,11 @@ check_column "sw2.1 sw2.3" sb:Port_Group ports name="${sw2_key}_pg1"
 check_column "sw1.2 sw1.3" sb:Port_Group ports name="${sw1_key}_pg2"
 check_column "sw2.2 sw2.3" sb:Port_Group ports name="${sw2_key}_pg2"
 
-dnl The northd node should not recompute, it should handle nb_global update
-dnl though, therefore "compute: 1".
+dnl The northd node should not recompute.
 AT_CHECK([as northd ovn-appctl -t NORTHD_TYPE inc-engine/show-stats northd], [0], [dnl
 Node: northd
 - recompute:            0
-- compute:              1
+- compute:              0
 - abort:                0
 ])
 dnl We did not change the set of switches a pg is applied to, there should be
@@ -9239,7 +9236,7 @@ dnl though, therefore "compute: 1".
 AT_CHECK([as northd ovn-appctl -t NORTHD_TYPE inc-engine/show-stats northd], [0], [dnl
 Node: northd
 - recompute:            0
-- compute:              1
+- compute:              0
 - abort:                0
 ])
 dnl We did not change the set of switches a pg is applied to, there should be
@@ -9271,12 +9268,11 @@ check_column "sw1.2" sb:Port_Group ports name="${sw1_key}_pg2"
 AT_CHECK([fetch_column sb:Port_Group ports name="${sw2_key}_pg2"], [0], [
 ])
 
-dnl The northd node should not recompute, it should handle nb_global update
-dnl though, therefore "compute: 1".
+dnl The northd node should not recompute.
 AT_CHECK([as northd ovn-appctl -t NORTHD_TYPE inc-engine/show-stats northd], [0], [dnl
 Node: northd
 - recompute:            0
-- compute:              1
+- compute:              0
 - abort:                0
 ])
 dnl We changed the set of switches a pg is applied to, there should be
@@ -9309,12 +9305,11 @@ check_column "sw1.2" sb:Port_Group ports name="${sw1_key}_pg2"
 AT_CHECK([fetch_column sb:Port_Group ports name="${sw2_key}_pg2"], [0], [
 ])
 
-dnl The northd node should not recompute, it should handle nb_global update
-dnl though, therefore "compute: 1".
+dnl The northd node should not recompute.
 AT_CHECK([as northd ovn-appctl -t NORTHD_TYPE inc-engine/show-stats northd], [0], [dnl
 Node: northd
 - recompute:            0
-- compute:              1
+- compute:              0
 - abort:                0
 ])
 dnl We changed the set of switches a pg is applied to, there should be
@@ -9347,12 +9342,11 @@ check_column "sw2.1" sb:Port_Group ports name="${sw2_key}_pg1"
 check_column "sw1.2" sb:Port_Group ports name="${sw1_key}_pg2"
 check_column "sw2.2" sb:Port_Group ports name="${sw2_key}_pg2"
 
-dnl The northd node should not recompute, it should handle nb_global update
-dnl though, therefore "compute: 1".
+dnl The northd node should not recompute.
 AT_CHECK([as northd ovn-appctl -t NORTHD_TYPE inc-engine/show-stats northd], [0], [dnl
 Node: northd
 - recompute:            0
-- compute:              1
+- compute:              0
 - abort:                0
 ])
 dnl We changed the set of switches a pg is applied to, there should be a
@@ -9387,12 +9381,11 @@ check_column "sw1.2" sb:Port_Group ports name="${sw1_key}_pg2"
 AT_CHECK([fetch_column sb:Port_Group ports name="${sw2_key}_pg2"], [0], [
 ])
 
-dnl The northd node should not recompute, it should handle nb_global update
-dnl though, therefore "compute: 1".
+dnl The northd node should not recompute,.
 AT_CHECK([as northd ovn-appctl -t NORTHD_TYPE inc-engine/show-stats northd], [0], [dnl
 Node: northd
 - recompute:            0
-- compute:              1
+- compute:              0
 - abort:                0
 ])
 dnl We changed the set of switches a pg is applied to, there should be a
@@ -11307,3 +11300,212 @@ CHECK_NO_CHANGE_AFTER_RECOMPUTE
 OVN_CLEANUP([hv1])
 AT_CLEANUP
 ])
+
+OVN_FOR_EACH_NORTHD_NO_HV([
+AT_SETUP([NB_Global and SB_Global incremental processing])
+
+ovn_start
+
+check_engine_stats() {
+  node=$1
+  recompute=$2
+  compute=$3
+
+  echo "__file__:__line__: Checking engine stats for node $node : recompute - \
+$recompute : compute - $compute"
+
+  node_stat=$(as northd ovn-appctl -t NORTHD_TYPE inc-engine/show-stats $node)
+  # node_stat will be of this format :
+  #     - Node: lflow - recompute: 3 - compute: 0 - abort: 0
+  node_recompute_ct=$(echo $node_stat | cut -d '-' -f2 | cut -d ':' -f2)
+  node_compute_ct=$(echo $node_stat | cut -d '-' -f3 | cut -d ':' -f2)
+
+  if [[ "$recompute" == "norecompute" ]]; then
+    # node should not be recomputed
+    echo "Expecting $node recompute count - $node_recompute_ct to be 0"
+    check test "$node_recompute_ct" -eq "0"
+  else
+    echo "Expecting $node recompute count - $node_recompute_ct not to be 0"
+    check test "$node_recompute_ct" -ne "0"
+  fi
+
+  if [[ "$compute" == "nocompute" ]]; then
+    # node should not be computed
+    echo "Expecting $node compute count - $node_compute_ct to be 0"
+    check test "$node_compute_ct" -eq "0"
+  else
+    echo "Expecting $node compute count - $node_compute_ct not to be 0"
+    check test "$node_compute_ct" -ne "0"
+  fi
+}
+
+check ovn-nbctl ls-add sw0
+check ovn-nbctl lr-add lr0
+check ovn-nbctl lsp-add sw0 sw0-p1 -- lsp-set-addresses sw0-p1 "00:00:20:20:00:03 10.0.0.3"
+check ovn-nbctl lrp-add lr0 lr0-sw0 00:00:20:20:12:14 10.0.0.1/24
+check ovn-nbctl lsp-add sw0 sw0-lr0
+check ovn-nbctl lsp-set-type sw0-lr0 router
+check ovn-nbctl lsp-set-addresses sw0-lr0 router
+check ovn-nbctl --wait=sb lsp-set-options sw0-lr0 router-port=lr0-sw0
+check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
+
+# This should not result in recomputes.
+check ovn-nbctl --wait=sb set NB_Global . options:foo=bar
+check_engine_stats global_config norecompute compute
+check_engine_stats northd norecompute compute
+check_engine_stats lflow norecompute compute
+CHECK_NO_CHANGE_AFTER_RECOMPUTE
+
+check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
+# This should result in recomputes.
+check ovn-sbctl set SB_Global . options:bar=foo
+check_engine_stats global_config recompute compute
+check_engine_stats northd recompute nocompute
+check_engine_stats lflow recompute nocompute
+CHECK_NO_CHANGE_AFTER_RECOMPUTE
+
+# Clears an nb option and checks that recomputes were triggered
+# and the option was added back by ovn-northd or not depending
+# on the 'added_back' argument.
+clear_nb_option() {
+  option=$1
+  add_back=$2
+  echo "clearing the nb option - $option"
+  check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
+  check ovn-nbctl --wait=sb remove NB_Global . options $option
+  check_engine_stats global_config recompute compute
+  check_engine_stats northd recompute nocompute
+  check_engine_stats lflow recompute nocompute
+
+  local retval=1
+  if [ "$add_back" == "true" ]; then
+    retval=0
+  fi
+  AT_CHECK([ovn-nbctl get NB_Global . options:$option], [$retval], [ignore], [ignore])
+}
+
+# Clear svc_monitor_mac and few other options which result in recompute.
+# and ovn-northd should update the nb options back.
+clear_nb_option svc_monitor_mac true
+clear_nb_option max_tunid true
+clear_nb_option mac_prefix true
+clear_nb_option northd_internal_version true
+
+check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
+check ovn-nbctl --wait=sb set NB_Global . options:ignore_chassis_features=true
+check_engine_stats global_config recompute compute
+check_engine_stats northd recompute nocompute
+check_engine_stats lflow recompute nocompute
+
+clear_nb_option ignore_chassis_features false
+
+set_nb_option_lflow_recompute() {
+  local option=$1
+  local value=$2
+  check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
+  check ovn-nbctl --wait=sb set NB_Global . options:$option=$value
+  check_engine_stats global_config norecompute compute
+  check_engine_stats northd recompute nocompute
+  check_engine_stats lflow recompute nocompute
+  check_engine_stats mac_binding_aging recompute nocompute
+  CHECK_NO_CHANGE_AFTER_RECOMPUTE
+}
+
+clear_nb_option_lflow_recompute() {
+  local option=$1
+  check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
+  check ovn-nbctl --wait=sb remove NB_Global . options $option
+  check_engine_stats global_config norecompute compute
+  check_engine_stats northd recompute nocompute
+  check_engine_stats lflow recompute nocompute
+  check_engine_stats mac_binding_aging recompute nocompute
+  CHECK_NO_CHANGE_AFTER_RECOMPUTE
+}
+
+set_nb_option_lflow_recompute debug_drop_domain_id 1
+clear_nb_option_lflow_recompute debug_drop_domain_id
+
+set_nb_option_lflow_recompute debug_drop_collector_set 1
+clear_nb_option_lflow_recompute debug_drop_collector_set
+
+set_nb_option_lflow_recompute mac_binding_removal_limit 100
+clear_nb_option_lflow_recompute mac_binding_removal_limit
+
+set_nb_option_lflow_recompute fdb_removal_limit 100
+clear_nb_option_lflow_recompute fdb_removal_limit
+
+set_nb_option_lflow_recompute controller_event true
+clear_nb_option_lflow_recompute controller_event
+
+set_nb_option_lflow_recompute ignore_lsp_down true
+clear_nb_option_lflow_recompute ignore_lsp_down
+
+set_nb_option_lflow_recompute use_ct_inv_match true
+clear_nb_option_lflow_recompute use_ct_inv_match
+
+set_nb_option_lflow_recompute default_acl_drop true
+clear_nb_option_lflow_recompute default_acl_drop
+
+set_nb_option_lflow_recompute use_common_zone true
+clear_nb_option_lflow_recompute use_common_zone
+
+set_nb_option_lflow_recompute install_ls_lb_from_router true
+clear_nb_option_lflow_recompute install_ls_lb_from_router
+
+# Now test changes to chassis for feature changes.
+check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
+check ovn-sbctl chassis-add ch1 geneve 127.0.0.1
+check ovn-nbctl --wait=sb sync
+check_engine_stats global_config recompute compute
+check_engine_stats northd recompute nocompute
+check_engine_stats lflow recompute nocompute
+
+check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
+check ovn-sbctl chassis-add ch2 geneve 127.0.0.2
+check ovn-nbctl --wait=sb sync
+check_engine_stats global_config recompute compute
+check_engine_stats northd recompute nocompute
+check_engine_stats lflow recompute nocompute
+
+AT_CHECK([ovn-nbctl get NB_Global . options:max_tunid | \
+sed s/":"//g | sed s/\"//g], [0], [16711680
+], [])
+
+check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
+check ovn-sbctl chassis-del ch2
+check ovn-nbctl --wait=sb sync
+check_engine_stats global_config recompute compute
+check_engine_stats northd recompute nocompute
+check_engine_stats lflow recompute nocompute
+
+check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
+check ovn-sbctl set encap . type=vxlan
+check ovn-nbctl --wait=sb sync
+check_engine_stats global_config recompute compute
+check_engine_stats northd recompute nocompute
+check_engine_stats lflow recompute nocompute
+
+AT_CHECK([ovn-nbctl get NB_Global . options:max_tunid | \
+sed s/":"//g | sed s/\"//g], [0], [4095
+], [])
+
+check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
+check ovn-sbctl set chassis . other_config:foo=bar
+check ovn-nbctl --wait=sb sync
+check_engine_stats global_config norecompute compute
+check_engine_stats mac_binding_aging recompute nocompute
+check_engine_stats fdb_aging recompute nocompute
+check_engine_stats northd recompute nocompute
+check_engine_stats lflow recompute nocompute
+
+check as northd ovn-appctl -t NORTHD_TYPE inc-engine/clear-stats
+check ovn-sbctl set chassis . other_config:ct-no-masked-label=true
+check ovn-nbctl --wait=sb sync
+check_engine_stats global_config norecompute compute
+check_engine_stats mac_binding_aging recompute nocompute
+check_engine_stats fdb_aging recompute nocompute
+check_engine_stats northd recompute nocompute
+check_engine_stats lflow recompute nocompute
+
+AT_CLEANUP
+])
