diff --git a/device/mellanox/x86_64-mlnx_msn4700-r0/Mellanox-SN4700-O8C48/buffers_defaults_t0.j2 b/device/mellanox/x86_64-mlnx_msn4700-r0/Mellanox-SN4700-O8C48/buffers_defaults_t0.j2
index a4aa03be88a1..4e51dfbef5c4 100644
--- a/device/mellanox/x86_64-mlnx_msn4700-r0/Mellanox-SN4700-O8C48/buffers_defaults_t0.j2
+++ b/device/mellanox/x86_64-mlnx_msn4700-r0/Mellanox-SN4700-O8C48/buffers_defaults_t0.j2
@@ -12,10 +12,17 @@
     limitations under the License.
 #}
 {% set default_cable = '5m' %}
+{%- if ((SYSTEM_DEFAULTS is defined) and ('tunnel_qos_remap' in SYSTEM_DEFAULTS) and (SYSTEM_DEFAULTS['tunnel_qos_remap']['status'] == 'enabled')) -%}
+{% set ingress_lossless_pool_size =  '45088768' %}
+{% set ingress_lossless_pool_xoff  =  '8298496' %}
+{% set egress_lossless_pool_size =  '60817392' %}
+{% set egress_lossy_pool_size =  '45088768' %}
+{%- else -%}
 {% set ingress_lossless_pool_size =  '44433408' %}
 {% set ingress_lossless_pool_xoff  =  '9576448' %}
 {% set egress_lossless_pool_size =  '60817392' %}
 {% set egress_lossy_pool_size =  '44433408' %}
+{%- endif -%}
 
 {% import 'buffers_defaults_objects.j2' as defs with context %}
 
@@ -23,10 +30,18 @@
 {{ defs.generate_buffer_pool_and_profiles_with_inactive_ports(port_names_inactive) }}
 {%- endmacro %}
 
+{%- macro generate_queue_buffers_with_extra_lossless_queues_with_inactive_ports(port_names_active, port_names_extra_queues, port_names_inactive) %}
+{{ defs.generate_queue_buffers_with_extra_lossless_queues(port_names_active, port_names_extra_queues, port_names_inactive) }}
+{%- endmacro %}
+
 {%- macro generate_profile_lists_with_inactive_ports(port_names_active, port_names_inactive) %}
 {{ defs.generate_profile_lists(port_names_active, port_names_inactive) }}
 {%- endmacro %}
 
+{%- macro generate_pg_profiles_with_extra_lossless_pgs_with_inactive_ports(port_names_active, port_names_extra_pgs, port_names_inactive) %}
+{{ defs.generate_pg_profiles_with_extra_lossless_pgs(port_names_active, port_names_extra_pgs, port_names_inactive) }}
+{%- endmacro %}
+
 {%- macro generate_queue_buffers_with_inactive_ports(port_names_active, port_names_inactive) %}
 {{ defs.generate_queue_buffers(port_names_active, port_names_inactive) }}
 {%- endmacro %}
diff --git a/device/mellanox/x86_64-mlnx_msn4700-r0/Mellanox-SN4700-O8C48/buffers_defaults_t1.j2 b/device/mellanox/x86_64-mlnx_msn4700-r0/Mellanox-SN4700-O8C48/buffers_defaults_t1.j2
index 40048d03eaa8..744b65b20e2f 100644
--- a/device/mellanox/x86_64-mlnx_msn4700-r0/Mellanox-SN4700-O8C48/buffers_defaults_t1.j2
+++ b/device/mellanox/x86_64-mlnx_msn4700-r0/Mellanox-SN4700-O8C48/buffers_defaults_t1.j2
@@ -12,10 +12,17 @@
     limitations under the License.
 #}
 {% set default_cable = '300m' %}
+{%- if ((SYSTEM_DEFAULTS is defined) and ('tunnel_qos_remap' in SYSTEM_DEFAULTS) and (SYSTEM_DEFAULTS['tunnel_qos_remap']['status'] == 'enabled')) -%}
+{% set ingress_lossless_pool_size =  '39026688' %}
+{% set ingress_lossless_pool_xoff  =  '13115392' %}
+{% set egress_lossless_pool_size =  '60817392' %}
+{% set egress_lossy_pool_size =  '39026688' %}
+{%- else -%}
 {% set ingress_lossless_pool_size =  '44089344' %}
 {% set ingress_lossless_pool_xoff  =  '9920512' %}
 {% set egress_lossless_pool_size =  '60817392' %}
 {% set egress_lossy_pool_size =  '44089344' %}
+{%- endif -%}
 
 {% import 'buffers_defaults_objects.j2' as defs with context %}
 
@@ -27,10 +34,18 @@
 {{ defs.generate_profile_lists(port_names_active, port_names_inactive) }}
 {%- endmacro %}
 
+{%- macro generate_queue_buffers_with_extra_lossless_queues_with_inactive_ports(port_names_active, port_names_extra_queues, port_names_inactive) %}
+{{ defs.generate_queue_buffers_with_extra_lossless_queues(port_names_active, port_names_extra_queues, port_names_inactive) }}
+{%- endmacro %}
+
 {%- macro generate_queue_buffers_with_inactive_ports(port_names_active, port_names_inactive) %}
 {{ defs.generate_queue_buffers(port_names_active, port_names_inactive) }}
 {%- endmacro %}
 
+{%- macro generate_pg_profiles_with_extra_lossless_pgs_with_inactive_ports(port_names_active, port_names_extra_pgs, port_names_inactive) %}
+{{ defs.generate_pg_profiles_with_extra_lossless_pgs(port_names_active, port_names_extra_pgs, port_names_inactive) }}
+{%- endmacro %}
+
 {%- macro generate_pg_profiles_with_inactive_ports(port_names_active, port_names_inactive) %}
 {{ defs.generate_pg_profiles(port_names_active, port_names_inactive) }}
 {%- endmacro %}
diff --git a/device/mellanox/x86_64-mlnx_msn4700-r0/Mellanox-SN4700-O8C48/qos.json.j2 b/device/mellanox/x86_64-mlnx_msn4700-r0/Mellanox-SN4700-O8C48/qos.json.j2
index eccf286dc879..48221aa2b3de 120000
--- a/device/mellanox/x86_64-mlnx_msn4700-r0/Mellanox-SN4700-O8C48/qos.json.j2
+++ b/device/mellanox/x86_64-mlnx_msn4700-r0/Mellanox-SN4700-O8C48/qos.json.j2
@@ -1 +1 @@
-../../x86_64-mlnx_msn2700-r0/ACS-MSN2700/qos.json.j2
\ No newline at end of file
+../../x86_64-mlnx_msn4600c-r0/Mellanox-SN4600C-C64/qos.json.j2
\ No newline at end of file