diff --git a/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/0/lanemap.ini b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/0/lanemap.ini
new file mode 100644
index 0000000000..36278a0177
--- /dev/null
+++ b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/0/lanemap.ini
@@ -0,0 +1,32 @@
+eth1:25,26,27,28    
+eth2:29,30,31,32    
+eth3:33,34,35,36    
+eth4:37,38,39,40    
+eth5:45,46,47,48    
+eth6:41,42,43,44    
+eth7:1,2,3,4        
+eth8:5,6,7,8        
+eth9:13,14,15,16    
+eth10:9,10,11,12     
+eth11:17,18,19,20    
+eth12:21,22,23,24    
+eth13:53,54,55,56    
+eth14:49,50,51,52    
+eth15:57,58,59,60    
+eth16:61,62,63,64    
+eth17:69,70,71,72    
+eth18:65,66,67,68    
+eth19:73,74,75,76    
+eth20:77,78,79,80    
+eth21:109,110,111,112
+eth22:105,106,107,108
+eth23:113,114,115,116
+eth24:117,118,119,120
+eth25:125,126,127,128
+eth26:121,122,123,124
+eth27:81,82,83,84    
+eth28:85,86,87,88    
+eth29:93,94,95,96    
+eth30:89,90,91,92    
+eth31:101,102,103,104
+eth32:97,98,99,100  
diff --git a/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/0/sai.profile b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/0/sai.profile
index 52e2e289af..bfc466f27e 100644
--- a/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/0/sai.profile
+++ b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/0/sai.profile
@@ -1,2 +1,5 @@
-SAI_INIT_CONFIG_FILE=/usr/share/sonic/hwsku/td2-s6000-32x40G.config.bcm
-SAI_NUM_ECMP_MEMBERS=32
+SAI_WARM_BOOT_READ_FILE=/var/cache/sai_warmboot.bin
+SAI_WARM_BOOT_WRITE_FILE=/var/cache/sai_warmboot.bin
+SAI_VS_SWITCH_TYPE=SAI_VS_SWITCH_TYPE_BCM56850
+SAI_VS_HOSTIF_USE_TAP_DEVICE=true
+SAI_VS_INTERFACE_LANE_MAP_FILE=/usr/share/sonic/hwsku/lanemap.ini
diff --git a/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/1/lanemap.ini b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/1/lanemap.ini
new file mode 100644
index 0000000000..36278a0177
--- /dev/null
+++ b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/1/lanemap.ini
@@ -0,0 +1,32 @@
+eth1:25,26,27,28    
+eth2:29,30,31,32    
+eth3:33,34,35,36    
+eth4:37,38,39,40    
+eth5:45,46,47,48    
+eth6:41,42,43,44    
+eth7:1,2,3,4        
+eth8:5,6,7,8        
+eth9:13,14,15,16    
+eth10:9,10,11,12     
+eth11:17,18,19,20    
+eth12:21,22,23,24    
+eth13:53,54,55,56    
+eth14:49,50,51,52    
+eth15:57,58,59,60    
+eth16:61,62,63,64    
+eth17:69,70,71,72    
+eth18:65,66,67,68    
+eth19:73,74,75,76    
+eth20:77,78,79,80    
+eth21:109,110,111,112
+eth22:105,106,107,108
+eth23:113,114,115,116
+eth24:117,118,119,120
+eth25:125,126,127,128
+eth26:121,122,123,124
+eth27:81,82,83,84    
+eth28:85,86,87,88    
+eth29:93,94,95,96    
+eth30:89,90,91,92    
+eth31:101,102,103,104
+eth32:97,98,99,100  
diff --git a/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/1/sai.profile b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/1/sai.profile
index 52e2e289af..bfc466f27e 100644
--- a/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/1/sai.profile
+++ b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/1/sai.profile
@@ -1,2 +1,5 @@
-SAI_INIT_CONFIG_FILE=/usr/share/sonic/hwsku/td2-s6000-32x40G.config.bcm
-SAI_NUM_ECMP_MEMBERS=32
+SAI_WARM_BOOT_READ_FILE=/var/cache/sai_warmboot.bin
+SAI_WARM_BOOT_WRITE_FILE=/var/cache/sai_warmboot.bin
+SAI_VS_SWITCH_TYPE=SAI_VS_SWITCH_TYPE_BCM56850
+SAI_VS_HOSTIF_USE_TAP_DEVICE=true
+SAI_VS_INTERFACE_LANE_MAP_FILE=/usr/share/sonic/hwsku/lanemap.ini
diff --git a/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/2/lanemap.ini b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/2/lanemap.ini
new file mode 100644
index 0000000000..36278a0177
--- /dev/null
+++ b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/2/lanemap.ini
@@ -0,0 +1,32 @@
+eth1:25,26,27,28    
+eth2:29,30,31,32    
+eth3:33,34,35,36    
+eth4:37,38,39,40    
+eth5:45,46,47,48    
+eth6:41,42,43,44    
+eth7:1,2,3,4        
+eth8:5,6,7,8        
+eth9:13,14,15,16    
+eth10:9,10,11,12     
+eth11:17,18,19,20    
+eth12:21,22,23,24    
+eth13:53,54,55,56    
+eth14:49,50,51,52    
+eth15:57,58,59,60    
+eth16:61,62,63,64    
+eth17:69,70,71,72    
+eth18:65,66,67,68    
+eth19:73,74,75,76    
+eth20:77,78,79,80    
+eth21:109,110,111,112
+eth22:105,106,107,108
+eth23:113,114,115,116
+eth24:117,118,119,120
+eth25:125,126,127,128
+eth26:121,122,123,124
+eth27:81,82,83,84    
+eth28:85,86,87,88    
+eth29:93,94,95,96    
+eth30:89,90,91,92    
+eth31:101,102,103,104
+eth32:97,98,99,100  
diff --git a/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/2/sai.profile b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/2/sai.profile
index 52e2e289af..bfc466f27e 100644
--- a/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/2/sai.profile
+++ b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/2/sai.profile
@@ -1,2 +1,5 @@
-SAI_INIT_CONFIG_FILE=/usr/share/sonic/hwsku/td2-s6000-32x40G.config.bcm
-SAI_NUM_ECMP_MEMBERS=32
+SAI_WARM_BOOT_READ_FILE=/var/cache/sai_warmboot.bin
+SAI_WARM_BOOT_WRITE_FILE=/var/cache/sai_warmboot.bin
+SAI_VS_SWITCH_TYPE=SAI_VS_SWITCH_TYPE_BCM56850
+SAI_VS_HOSTIF_USE_TAP_DEVICE=true
+SAI_VS_INTERFACE_LANE_MAP_FILE=/usr/share/sonic/hwsku/lanemap.ini
diff --git a/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/3/lanemap.ini b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/3/lanemap.ini
new file mode 100644
index 0000000000..36278a0177
--- /dev/null
+++ b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/3/lanemap.ini
@@ -0,0 +1,32 @@
+eth1:25,26,27,28    
+eth2:29,30,31,32    
+eth3:33,34,35,36    
+eth4:37,38,39,40    
+eth5:45,46,47,48    
+eth6:41,42,43,44    
+eth7:1,2,3,4        
+eth8:5,6,7,8        
+eth9:13,14,15,16    
+eth10:9,10,11,12     
+eth11:17,18,19,20    
+eth12:21,22,23,24    
+eth13:53,54,55,56    
+eth14:49,50,51,52    
+eth15:57,58,59,60    
+eth16:61,62,63,64    
+eth17:69,70,71,72    
+eth18:65,66,67,68    
+eth19:73,74,75,76    
+eth20:77,78,79,80    
+eth21:109,110,111,112
+eth22:105,106,107,108
+eth23:113,114,115,116
+eth24:117,118,119,120
+eth25:125,126,127,128
+eth26:121,122,123,124
+eth27:81,82,83,84    
+eth28:85,86,87,88    
+eth29:93,94,95,96    
+eth30:89,90,91,92    
+eth31:101,102,103,104
+eth32:97,98,99,100  
diff --git a/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/3/sai.profile b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/3/sai.profile
index 52e2e289af..bfc466f27e 100644
--- a/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/3/sai.profile
+++ b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/3/sai.profile
@@ -1,2 +1,5 @@
-SAI_INIT_CONFIG_FILE=/usr/share/sonic/hwsku/td2-s6000-32x40G.config.bcm
-SAI_NUM_ECMP_MEMBERS=32
+SAI_WARM_BOOT_READ_FILE=/var/cache/sai_warmboot.bin
+SAI_WARM_BOOT_WRITE_FILE=/var/cache/sai_warmboot.bin
+SAI_VS_SWITCH_TYPE=SAI_VS_SWITCH_TYPE_BCM56850
+SAI_VS_HOSTIF_USE_TAP_DEVICE=true
+SAI_VS_INTERFACE_LANE_MAP_FILE=/usr/share/sonic/hwsku/lanemap.ini
diff --git a/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/4/lanemap.ini b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/4/lanemap.ini
new file mode 100644
index 0000000000..36278a0177
--- /dev/null
+++ b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/4/lanemap.ini
@@ -0,0 +1,32 @@
+eth1:25,26,27,28    
+eth2:29,30,31,32    
+eth3:33,34,35,36    
+eth4:37,38,39,40    
+eth5:45,46,47,48    
+eth6:41,42,43,44    
+eth7:1,2,3,4        
+eth8:5,6,7,8        
+eth9:13,14,15,16    
+eth10:9,10,11,12     
+eth11:17,18,19,20    
+eth12:21,22,23,24    
+eth13:53,54,55,56    
+eth14:49,50,51,52    
+eth15:57,58,59,60    
+eth16:61,62,63,64    
+eth17:69,70,71,72    
+eth18:65,66,67,68    
+eth19:73,74,75,76    
+eth20:77,78,79,80    
+eth21:109,110,111,112
+eth22:105,106,107,108
+eth23:113,114,115,116
+eth24:117,118,119,120
+eth25:125,126,127,128
+eth26:121,122,123,124
+eth27:81,82,83,84    
+eth28:85,86,87,88    
+eth29:93,94,95,96    
+eth30:89,90,91,92    
+eth31:101,102,103,104
+eth32:97,98,99,100  
diff --git a/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/4/sai.profile b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/4/sai.profile
index 52e2e289af..bfc466f27e 100644
--- a/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/4/sai.profile
+++ b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/4/sai.profile
@@ -1,2 +1,5 @@
-SAI_INIT_CONFIG_FILE=/usr/share/sonic/hwsku/td2-s6000-32x40G.config.bcm
-SAI_NUM_ECMP_MEMBERS=32
+SAI_WARM_BOOT_READ_FILE=/var/cache/sai_warmboot.bin
+SAI_WARM_BOOT_WRITE_FILE=/var/cache/sai_warmboot.bin
+SAI_VS_SWITCH_TYPE=SAI_VS_SWITCH_TYPE_BCM56850
+SAI_VS_HOSTIF_USE_TAP_DEVICE=true
+SAI_VS_INTERFACE_LANE_MAP_FILE=/usr/share/sonic/hwsku/lanemap.ini
diff --git a/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/5/lanemap.ini b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/5/lanemap.ini
new file mode 100644
index 0000000000..36278a0177
--- /dev/null
+++ b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/5/lanemap.ini
@@ -0,0 +1,32 @@
+eth1:25,26,27,28    
+eth2:29,30,31,32    
+eth3:33,34,35,36    
+eth4:37,38,39,40    
+eth5:45,46,47,48    
+eth6:41,42,43,44    
+eth7:1,2,3,4        
+eth8:5,6,7,8        
+eth9:13,14,15,16    
+eth10:9,10,11,12     
+eth11:17,18,19,20    
+eth12:21,22,23,24    
+eth13:53,54,55,56    
+eth14:49,50,51,52    
+eth15:57,58,59,60    
+eth16:61,62,63,64    
+eth17:69,70,71,72    
+eth18:65,66,67,68    
+eth19:73,74,75,76    
+eth20:77,78,79,80    
+eth21:109,110,111,112
+eth22:105,106,107,108
+eth23:113,114,115,116
+eth24:117,118,119,120
+eth25:125,126,127,128
+eth26:121,122,123,124
+eth27:81,82,83,84    
+eth28:85,86,87,88    
+eth29:93,94,95,96    
+eth30:89,90,91,92    
+eth31:101,102,103,104
+eth32:97,98,99,100  
diff --git a/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/5/sai.profile b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/5/sai.profile
index 52e2e289af..bfc466f27e 100644
--- a/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/5/sai.profile
+++ b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/5/sai.profile
@@ -1,2 +1,5 @@
-SAI_INIT_CONFIG_FILE=/usr/share/sonic/hwsku/td2-s6000-32x40G.config.bcm
-SAI_NUM_ECMP_MEMBERS=32
+SAI_WARM_BOOT_READ_FILE=/var/cache/sai_warmboot.bin
+SAI_WARM_BOOT_WRITE_FILE=/var/cache/sai_warmboot.bin
+SAI_VS_SWITCH_TYPE=SAI_VS_SWITCH_TYPE_BCM56850
+SAI_VS_HOSTIF_USE_TAP_DEVICE=true
+SAI_VS_INTERFACE_LANE_MAP_FILE=/usr/share/sonic/hwsku/lanemap.ini
diff --git a/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/topology.sh b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/topology.sh
index 378f794190..cf70f30631 100755
--- a/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/topology.sh
+++ b/device/virtual/x86_64-kvm_x86_64-r0/msft_multi_asic_vs/topology.sh
@@ -14,9 +14,10 @@ start () {
     # eth48 - eth63: asic5
     for ASIC in `seq $FIRST_FRONTEND_ASIC $LAST_FRONTEND_ASIC`; do
         for NUM in `seq 1 16`; do
-            ORIG="eth$((16 * $ASIC + $NUM - 1))"
+            ORIG="eth$((16 * $ASIC + $NUM))"
             TEMP="ethTemp999"
-            NEW="eth$(($NUM + 16))"
+            NEW="eth$(($NUM))"
+            echo "$ASIC : $NEW old $ORIG"
             ip link set dev $ORIG down
             ip link set dev $ORIG name $TEMP # rename to prevent conflicts before renaming in new namespace
             ip link set dev $TEMP netns asic$ASIC
@@ -29,8 +30,9 @@ start () {
     for BACKEND in `seq $FIRST_BACKEND_ASIC $LAST_BACKEND_ASIC`; do
         for FRONTEND in `seq $FIRST_FRONTEND_ASIC $LAST_FRONTEND_ASIC`; do
             for LINK in `seq 1 8`; do
-                BACK_NAME="eth$((8 * $FRONTEND + $LINK))"
-		FRONT_NAME="eth$((8 * $(($LAST_BACKEND_ASIC - $BACKEND)) + $LINK))" 
+		FRONT_NAME="eth$((8 * $(($BACKEND - $FIRST_BACKEND_ASIC)) + $LINK + 16))"
+		BACK_NAME="eth$((8 * $FRONTEND + $LINK))"
+		echo "$FRONTEND:$FRONT_NAME - $BACKEND:$BACK_NAME"
                 TEMP_BACK="ethBack999"
                 TEMP_FRONT="ethFront999"
                 
@@ -52,7 +54,7 @@ stop() {
     for ASIC in `seq $FIRST_FRONTEND_ASIC $LAST_FRONTEND_ASIC`; do
         for NUM in `seq 1 16`; do
             TEMP="eth999"
-            OLD="eth$(($NUM + 16))"
+            OLD="eth$((16 * $ASIC + $NUM))"
             NAME="eth$((16 * $ASIC + $NUM - 1))"
             sudo ip netns exec asic$ASIC ip link set dev $OLD down
             sudo ip netns exec asic$ASIC ip link set dev $OLD name $TEMP
@@ -78,4 +80,3 @@ case "$1" in
         echo "Usage: $0 {start|stop}"
         ;;
 esac
-
diff --git a/dockers/docker-fpm-frr/bgpd.conf.default.j2 b/dockers/docker-fpm-frr/bgpd.conf.default.j2
index e12782b035..2bf80b80a7 100644
--- a/dockers/docker-fpm-frr/bgpd.conf.default.j2
+++ b/dockers/docker-fpm-frr/bgpd.conf.default.j2
@@ -23,6 +23,20 @@ route-map TO_BGP_PEER_V4 permit 100
 !
 route-map TO_BGP_PEER_V6 permit 100
 !
+{% if DEVICE_METADATA['localhost']['type'] == 'InternalFrontend' %}
+route-map HIDE_INTERNAL permit 10
+  set community local-AS
+!
+{% endif %}
+{% if DEVICE_METADATA['localhost']['type'] == 'InternalBackend' %}
+route-map OVERRIDE_ORIGINATOR_ID permit 10
+{% for (name, prefix) in LOOPBACK_INTERFACE|pfx_filter %}
+{% if prefix | ipv4 and name == 'Loopback0' %}
+  set originator-id {{ prefix | ip }}
+{% endif %}
+{% endfor %}
+!
+{% endif %}
 {% if BGP_MONITORS is defined and BGP_MONITORS|length > 0 %}
 route-map FROM_BGPMON deny 10
 !
@@ -37,6 +51,9 @@ route-map set-next-hop-global-v6 permit 10
   set ipv6 next-hop prefer-global
 !
 router bgp {{ DEVICE_METADATA['localhost']['bgp_asn'] }}
+{% if DEVICE_METADATA['localhost']['type'] == 'InternalFrontend' %}
+  redistribute connected route-map HIDE_INTERNAL
+{% endif %}
   bgp log-neighbor-changes
   bgp bestpath as-path multipath-relax
   no bgp default ipv4-unicast
@@ -151,6 +168,9 @@ router bgp {{ DEVICE_METADATA['localhost']['bgp_asn'] }}
   neighbor {{ neighbor_addr }} peer-group BGPMON
   neighbor {{ neighbor_addr }} description {{ bgp_session['name'] }}
   neighbor {{ neighbor_addr }} activate
+{% if DEVICE_METADATA['localhost']['type'] == 'InternalBackend' %}
+  neighbor {{ neighbor_addr }} route-map OVERRIDE_ORIGINATOR_ID in
+{% endif %}
   address-family ipv6
     neighbor {{ neighbor_addr }} activate
   exit-address-family
diff --git a/files/build_templates/database.service.j2 b/files/build_templates/database.service.j2
new file mode 120000
index 0000000000..63340abef8
--- /dev/null
+++ b/files/build_templates/database.service.j2
@@ -0,0 +1 @@
+per_namespace/database.service.j2
\ No newline at end of file
diff --git a/files/build_templates/docker_image_ctl.j2 b/files/build_templates/docker_image_ctl.j2
index 5de892555a..297c9dd1c2 100644
--- a/files/build_templates/docker_image_ctl.j2
+++ b/files/build_templates/docker_image_ctl.j2
@@ -14,15 +14,16 @@ link_namespace() {
     mkdir -p /var/run/netns
     PID="$(docker inspect -f {{"'{{.State.Pid}}'"}} "{{docker_container_name}}$DEV")"
 
-    if `ip netns | grep --quiet -w "{{docker_container_name}}$DEV"`; then # namespace exists
-        if [ $(readlink -f /var/run/netns/$NET_NS$DEV) = $(readlink -f /proc/$PID/ns/net) ]; then # namespace is correctly linked
+    PIDS=`ip netns pids "$NET_NS" 2>/dev/null`
+    if [ "$?" -eq "0" ]; then # namespace exists
+        if `echo $PIDS | grep --quiet -w $PID`; then # namespace is correctly linked
             return 0
         else # if it's incorrectly linked remove it
-            ip netns delete "{{docker_container_name}}$DEV"
+            ip netns delete $NET_NS
         fi
     fi
 
-    ln -s /proc/$PID/ns/net /var/run/netns/$NET_NS$DEV
+    ln -s /proc/$PID/ns/net /var/run/netns/$NET_NS
 }
 {%- endif %}
 
@@ -56,14 +57,14 @@ function preStartAction()
     WARM_DIR=/host/warmboot
     if [[ ("$BOOT_TYPE" == "warm" || "$BOOT_TYPE" == "fastfast")  && -f $WARM_DIR/dump.rdb ]]; then
         # Load redis content from /host/warmboot/dump.rdb
-        docker cp $WARM_DIR/dump.rdb database:/var/lib/redis/dump.rdb
+        docker cp $WARM_DIR/dump.rdb database$DEV:/var/lib/redis/dump.rdb
     else
         # Create an emtpy file and overwrite any RDB if already there
         echo -n > /tmp/dump.rdb
-        docker cp /tmp/dump.rdb database:/var/lib/redis/
+        docker cp /tmp/dump.rdb database$DEV:/var/lib/redis/
     fi
 {%- elif docker_container_name == "snmp" %}
-    sonic-db-cli STATE_DB HSET 'DEVICE_METADATA|localhost' chassis_serial_number $(decode-syseeprom -s)
+    sonic-netns-exec "$NET_NS" sonic-db-cli STATE_DB HSET 'DEVICE_METADATA|localhost' chassis_serial_number $(decode-syseeprom -s)
 {%- else %}
     : # nothing
 {%- endif %}
@@ -76,25 +77,25 @@ function postStartAction()
         link_namespace $DEV
     fi
     # Wait until redis starts
-    /usr/bin/docker exec database ping_pong_db_insts
+    /usr/bin/docker exec database$DEV ping_pong_db_insts
     if [[ ("$BOOT_TYPE" == "warm" || "$BOOT_TYPE" == "fastfast") && -f $WARM_DIR/dump.rdb ]]; then
         rm -f $WARM_DIR/dump.rdb
     else
         # If there is a config_db.json dump file, load it.
-        if [ -r /etc/sonic/config_db.json ]; then
+        if [ -r /etc/sonic/config_db$DEV.json ]; then
             if [ -r /etc/sonic/init_cfg.json ]; then
-                sonic-cfggen -j /etc/sonic/init_cfg.json -j /etc/sonic/config_db.json --write-to-db
+                sonic-netns-exec "$NET_NS" sonic-cfggen -j /etc/sonic/init_cfg.json -j /etc/sonic/config_db$DEV.json --write-to-db
             else
-                sonic-cfggen -j /etc/sonic/config_db.json --write-to-db
+                sonic-netns-exec "$NET_NS" sonic-cfggen -j /etc/sonic/config_db$DEV.json --write-to-db
             fi
         fi
 
         if [[ "$BOOT_TYPE" == "fast" ]]; then
             # set the key to expire in 3 minutes
-            sonic-db-cli STATE_DB SET "FAST_REBOOT|system" "1" "EX" "180"
+            /usr/bin/sonic-netns-exec "$NET_NS" sonic-db-cli STATE_DB SET "FAST_REBOOT|system" "1" "EX" "180"
         fi
 
-        sonic-db-cli CONFIG_DB SET "CONFIG_DB_INITIALIZED" "1"
+        /usr/bin/sonic-netns-exec "$NET_NS" sonic-db-cli CONFIG_DB SET "CONFIG_DB_INITIALIZED" "1"
     fi
 
     if [[ -x /usr/bin/db_migrator.py ]]; then
@@ -102,14 +103,14 @@ function postStartAction()
         /usr/bin/db_migrator.py -o migrate
     fi
 {%- elif docker_container_name == "swss" %}
-    docker exec swss rm -f /ready   # remove cruft
+    docker exec swss$DEV rm -f /ready   # remove cruft
     if [[ "$BOOT_TYPE" == "fast" ]] && [[ -d /host/fast-reboot ]]; then
-        test -e /host/fast-reboot/fdb.json && docker cp /host/fast-reboot/fdb.json swss:/
-        test -e /host/fast-reboot/arp.json && docker cp /host/fast-reboot/arp.json swss:/
-        test -e /host/fast-reboot/default_routes.json && docker cp /host/fast-reboot/default_routes.json swss:/
+        test -e /host/fast-reboot/fdb.json && docker cp /host/fast-reboot/fdb.json swss$DEV:/
+        test -e /host/fast-reboot/arp.json && docker cp /host/fast-reboot/arp.json swss$DEV:/
+        test -e /host/fast-reboot/default_routes.json && docker cp /host/fast-reboot/default_routes.json swss$DEV:/
         rm -fr /host/fast-reboot
     fi
-    docker exec swss touch /ready   # signal swssconfig.sh to go
+    docker exec swss$DEV touch /ready # signal swssconfig.sh to go
 {%- elif docker_container_name == "pmon" %}
 
     DEVPATH="/usr/share/sonic/device"
@@ -131,14 +132,14 @@ start() {
     BOOT_TYPE=`getBootType`
 
     # Obtain our platform as we will mount directories with these names in each docker
-    PLATFORM=`sonic-cfggen -H -v DEVICE_METADATA.localhost.platform`
+    PLATFORM=`sonic-netns-exec "$NET_NS" sonic-cfggen -H -v DEVICE_METADATA.localhost.platform`
 
     {%- if docker_container_name == "database" %}
     # Don't mount HWSKU in {{docker_container_name}} container.
     HWSKU=""
     {%- else %}
     # Obtain our HWSKU as we will mount directories with these names in each docker
-    HWSKU=`sonic-cfggen -d -v 'DEVICE_METADATA["localhost"]["hwsku"]'`
+    HWSKU=`sonic-netns-exec "$NET_NS" sonic-cfggen -d -v 'DEVICE_METADATA["localhost"]["hwsku"]'`
     {%- endif %}
 
     DOCKERCHECK=`docker inspect --type container {{docker_container_name}}$DEV 2>/dev/null`
@@ -185,7 +186,14 @@ start() {
         NET="container:database$DEV"
         {%- endif %}
     fi
-
+{%- if docker_container_name == "bgp" %}
+    if [ "$DEV" ]; then
+        if [ ! -d "/etc/sonic/frr/$DEV" ]; then
+            mkdir /etc/sonic/frr/$DEV
+            cp -r /etc/sonic/frr/*.conf /etc/sonic/frr/$DEV
+        fi
+    fi
+{%- endif %}
 {%- if sonic_asic_platform == "mellanox" %}
     # TODO: Mellanox will remove the --tmpfs exception after SDK socket path changed in new SDK version
 {%- endif %}
@@ -215,10 +223,13 @@ start() {
         --tmpfs /tmp \
 {%- endif %}
 {%- endif %}
-        -v /var/run/redis:/var/run/redis:rw \
+{%- if docker_container_name == "bgp" %}
+        -v /etc/sonic/frr/$DEV:/etc/frr:rw \
+{%- endif %}
+        -v /var/run/redis$DEV:/var/run/redis:rw \
         -v /usr/share/sonic/device/$PLATFORM:/usr/share/sonic/platform:ro \
 {%- if docker_container_name != "database" %}
-        -v /usr/share/sonic/device/$PLATFORM/$HWSKU:/usr/share/sonic/hwsku:ro \
+        -v /usr/share/sonic/device/$PLATFORM/$HWSKU/$DEV:/usr/share/sonic/hwsku:ro \
 {%- endif %}
 {%- if sonic_asic_platform != "mellanox" %}
         --tmpfs /tmp \
@@ -230,7 +241,7 @@ start() {
     }
 
     preStartAction
-    docker start {{docker_container_name}}
+    docker start {{docker_container_name}}$DEV
     postStartAction
 }
 
@@ -241,13 +252,19 @@ wait() {
 stop() {
     docker stop {{docker_container_name}}$DEV
 {%- if docker_container_name == "database" %}
-    ip netns delete "$NET_NS$DEV"
+    if [ "$DEV" ]; then 
+        ip netns delete "$NET_NS"
+    fi
 {%- endif %}
 }
 
 OP=$1
 DEV=$2 # namespace/device number to operate on
-NET_NS="asic" #name of the network namespace
+if [ "$DEV" ]; then
+    NET_NS="asic$DEV" #name of the network namespace
+else
+    NET_NS=""    
+fi
 
 case "$1" in
     start|wait|stop)
diff --git a/files/build_templates/lldp.service.j2 b/files/build_templates/lldp.service.j2
deleted file mode 100644
index 2599fc5c5b..0000000000
--- a/files/build_templates/lldp.service.j2
+++ /dev/null
@@ -1,18 +0,0 @@
-[Unit]
-Description=LLDP container
-Requires=updategraph.service
-After=updategraph.service swss.service syncd.service
-Before=ntp-config.service
-StartLimitIntervalSec=1200
-StartLimitBurst=3
-
-[Service]
-User={{ sonicadmin_user }}
-ExecStartPre=/usr/bin/{{docker_container_name}}.sh start
-ExecStart=/usr/bin/{{docker_container_name}}.sh wait
-ExecStop=/usr/bin/{{docker_container_name}}.sh stop
-Restart=always
-RestartSec=30
-
-[Install]
-WantedBy=multi-user.target
diff --git a/files/build_templates/per_namespace/bgp.service.j2 b/files/build_templates/per_namespace/bgp.service.j2
new file mode 100644
index 0000000000..79e9afc4eb
--- /dev/null
+++ b/files/build_templates/per_namespace/bgp.service.j2
@@ -0,0 +1,21 @@
+[Unit]
+Description=BGP container
+Requires=database{% if multi_instance == 'true' %}@%i{% endif %}.service
+After=database{% if multi_instance == 'true' %}@%i{% endif %}.service
+Requires=updategraph.service
+After=updategraph.service
+Before=ntp-config.service
+StartLimitIntervalSec=1200
+StartLimitBurst=3
+
+[Service]
+User={{ sonicadmin_user }}
+ExecStartPre=/usr/bin/{{docker_container_name}}.sh start{% if multi_instance == 'true' %} %i{% endif %}
+ExecStart=/usr/bin/{{docker_container_name}}.sh wait{% if multi_instance == 'true' %} %i{% endif %}
+ExecStop=/usr/bin/{{docker_container_name}}.sh stop{% if multi_instance == 'true' %} %i{% endif %}
+
+Restart=always
+RestartSec=30
+
+[Install]
+WantedBy=multi-user.target
diff --git a/files/build_templates/per_namespace/database.service.j2 b/files/build_templates/per_namespace/database.service.j2
new file mode 100644
index 0000000000..396fdc6678
--- /dev/null
+++ b/files/build_templates/per_namespace/database.service.j2
@@ -0,0 +1,22 @@
+[Unit]
+Description=Database container
+{% if multi_instance == 'true' %}
+Requires=database.service
+After=database.service
+{% endif %}
+Requires=docker.service
+After=docker.service
+After=rc-local.service
+StartLimitIntervalSec=1200
+StartLimitBurst=3
+
+[Service]
+User=root
+ExecStartPre=/usr/bin/{{docker_container_name}}.sh start{% if multi_instance == 'true' %} %i{% endif %}
+ExecStart=/usr/bin/{{docker_container_name}}.sh wait{% if multi_instance == 'true' %} %i{% endif %}
+ExecStop=/usr/bin/{{docker_container_name}}.sh stop{% if multi_instance == 'true' %} %i{% endif %}
+Restart=always
+RestartSec=30
+
+[Install]
+WantedBy=multi-user.target
diff --git a/files/build_templates/per_namespace/lldp.service.j2 b/files/build_templates/per_namespace/lldp.service.j2
new file mode 100644
index 0000000000..b48675b032
--- /dev/null
+++ b/files/build_templates/per_namespace/lldp.service.j2
@@ -0,0 +1,22 @@
+[Unit]
+Description=LLDP container
+Requires=database{% if multi_instance == 'true' %}@%i{% endif %}.service
+After=database{% if multi_instance == 'true' %}@%i{% endif %}.service
+After=swss{% if multi_instance == 'true' %}@%i{% endif %}.service
+After=syncd{% if multi_instance == 'true' %}@%i{% endif %}.service
+Requires=updategraph.service
+After=updategraph.service
+Before=ntp-config.service
+StartLimitIntervalSec=1200
+StartLimitBurst=3
+
+[Service]
+User={{ sonicadmin_user }}
+ExecStartPre=/usr/bin/{{docker_container_name}}.sh start{% if multi_instance == 'true' %} %i{% endif %}
+ExecStart=/usr/bin/{{docker_container_name}}.sh wait{% if multi_instance == 'true' %} %i{% endif %}
+ExecStop=/usr/bin/{{docker_container_name}}.sh stop{% if multi_instance == 'true' %} %i{% endif %}
+Restart=always
+RestartSec=30
+
+[Install]
+WantedBy=multi-user.target
diff --git a/files/build_templates/per_namespace/swss.service.j2 b/files/build_templates/per_namespace/swss.service.j2
new file mode 100644
index 0000000000..53d6b4497d
--- /dev/null
+++ b/files/build_templates/per_namespace/swss.service.j2
@@ -0,0 +1,31 @@
+[Unit]
+Description=switch state service
+Requires=database{% if multi_instance == 'true' %}@%i{% endif %}.service
+After=database{% if multi_instance == 'true' %}@%i{% endif %}.service
+{% if multi_instance == 'true' and sonic_asic_platform == 'vs' %}
+Requires=topology.service
+After=topology.service
+{% endif %}
+{% if sonic_asic_platform == 'broadcom' %}
+Requires=opennsl-modules.service
+{% elif sonic_asic_platform == 'nephos' %}
+Requires=nps-modules-4.9.0-11-2-amd64.service
+{% endif %}
+Requires=updategraph.service
+After=updategraph.service
+After=interfaces-config.service
+Before=ntp-config.service
+StartLimitIntervalSec=1200
+StartLimitBurst=3
+
+[Service]
+User=root
+Environment=sonic_asic_platform={{ sonic_asic_platform }}
+ExecStartPre=/usr/local/bin/swss.sh start{% if multi_instance == 'true' %} %i{% endif %}
+ExecStart=/usr/local/bin/swss.sh wait{% if multi_instance == 'true' %} %i{% endif %}
+ExecStop=/usr/local/bin/swss.sh stop{% if multi_instance == 'true' %} %i{% endif %}
+Restart=always
+RestartSec=30
+
+[Install]
+WantedBy=multi-user.target
diff --git a/files/build_templates/per_namespace/syncd.service.j2 b/files/build_templates/per_namespace/syncd.service.j2
new file mode 100644
index 0000000000..b2922e0d12
--- /dev/null
+++ b/files/build_templates/per_namespace/syncd.service.j2
@@ -0,0 +1,33 @@
+[Unit]
+Description=syncd service
+Requires=database{% if multi_instance == 'true' %}@%i{% endif %}.service
+After=database{% if multi_instance == 'true' %}@%i{% endif %}.service
+After=swss{% if multi_instance == 'true' %}@%i{% endif %}.service
+{% if multi_instance == 'true' and sonic_asic_platform == 'vs' %}
+Requires=topology.service
+After=topology.service
+{% endif %}
+{% if sonic_asic_platform == 'broadcom' %}
+Requires=opennsl-modules.service
+After=opennsl-modules.service
+{% elif sonic_asic_platform == 'nephos' %}
+Requires=nps-modules-4.9.0-11-2-amd64.service
+After=nps-modules-4.9.0-11-2-amd64.service
+{% endif %}
+Requires=updategraph.service
+After=updategraph.service
+After=interfaces-config.service
+Before=ntp-config.service
+
+[Service]
+User=root
+Environment=sonic_asic_platform={{ sonic_asic_platform }}
+ExecStartPre=/usr/local/bin/syncd.sh start{% if multi_instance == 'true' %} %i{% endif %}
+ExecStart=/usr/local/bin/syncd.sh wait{% if multi_instance == 'true' %} %i{% endif %}
+ExecStop=/usr/local/bin/syncd.sh stop{% if multi_instance == 'true' %} %i{% endif %}
+{% if sonic_asic_platform == 'mellanox' %}
+TimeoutStartSec=150
+{% endif %}
+
+[Install]
+WantedBy=multi-user.target
diff --git a/files/build_templates/per_namespace/teamd.service.j2 b/files/build_templates/per_namespace/teamd.service.j2
new file mode 100644
index 0000000000..092f9d2ebd
--- /dev/null
+++ b/files/build_templates/per_namespace/teamd.service.j2
@@ -0,0 +1,19 @@
+[Unit]
+Description=TEAMD container
+After=swss{% if multi_instance == 'true' %}@%i{% endif %}.service
+Requires=updategraph.service
+After=updategraph.service
+Before=ntp-config.service
+StartLimitIntervalSec=1200
+StartLimitBurst=3
+
+[Service]
+User={{ sonicadmin_user }}
+ExecStartPre=/usr/bin/{{docker_container_name}}.sh start{% if multi_instance == 'true' %} %i{% endif %}
+ExecStart=/usr/bin/{{docker_container_name}}.sh wait{% if multi_instance == 'true' %} %i{% endif %}
+ExecStop=/usr/bin/{{docker_container_name}}.sh stop{% if multi_instance == 'true' %} %i{% endif %}
+Restart=always
+RestartSec=30
+
+[Install]
+WantedBy=multi-user.target
diff --git a/files/build_templates/single_instance/bgp.service.j2 b/files/build_templates/single_instance/bgp.service.j2
deleted file mode 100644
index fdf9d9c78c..0000000000
--- a/files/build_templates/single_instance/bgp.service.j2
+++ /dev/null
@@ -1,18 +0,0 @@
-[Unit]
-Description=BGP container
-Requires=updategraph.service
-After=updategraph.service
-Before=ntp-config.service
-StartLimitIntervalSec=1200
-StartLimitBurst=3
-
-[Service]
-User={{ sonicadmin_user }}
-ExecStartPre=/usr/bin/{{docker_container_name}}.sh start
-ExecStart=/usr/bin/{{docker_container_name}}.sh wait
-ExecStop=/usr/bin/{{docker_container_name}}.sh stop
-Restart=always
-RestartSec=30
-
-[Install]
-WantedBy=multi-user.target
diff --git a/files/build_templates/single_instance/database.service.j2 b/files/build_templates/single_instance/database.service.j2
deleted file mode 100644
index fd0063195e..0000000000
--- a/files/build_templates/single_instance/database.service.j2
+++ /dev/null
@@ -1,18 +0,0 @@
-[Unit]
-Description=Database container
-Requires=docker.service
-After=docker.service
-After=rc-local.service
-StartLimitIntervalSec=1200
-StartLimitBurst=3
-
-[Service]
-User=root
-ExecStartPre=/usr/bin/{{docker_container_name}}.sh start
-ExecStart=/usr/bin/{{docker_container_name}}.sh wait
-ExecStop=/usr/bin/{{docker_container_name}}.sh stop
-Restart=always
-RestartSec=30
-
-[Install]
-WantedBy=multi-user.target
diff --git a/files/build_templates/single_instance/swss.service.j2 b/files/build_templates/single_instance/swss.service.j2
deleted file mode 100644
index 44206b08eb..0000000000
--- a/files/build_templates/single_instance/swss.service.j2
+++ /dev/null
@@ -1,25 +0,0 @@
-[Unit]
-Description=switch state service
-Requires=database.service updategraph.service
-{% if sonic_asic_platform == 'broadcom' %}
-Requires=opennsl-modules.service
-{% elif sonic_asic_platform == 'nephos' %}
-Requires=nps-modules-4.9.0-11-2-amd64.service
-{% endif %}
-After=database.service updategraph.service
-After=interfaces-config.service
-Before=ntp-config.service
-StartLimitIntervalSec=1200
-StartLimitBurst=3
-
-[Service]
-User=root
-Environment=sonic_asic_platform={{ sonic_asic_platform }}
-ExecStartPre=/usr/local/bin/swss.sh start
-ExecStart=/usr/local/bin/swss.sh wait
-ExecStop=/usr/local/bin/swss.sh stop
-Restart=always
-RestartSec=30
-
-[Install]
-WantedBy=multi-user.target
diff --git a/files/build_templates/single_instance/syncd.service.j2 b/files/build_templates/single_instance/syncd.service.j2
deleted file mode 100644
index 7a7d27114b..0000000000
--- a/files/build_templates/single_instance/syncd.service.j2
+++ /dev/null
@@ -1,30 +0,0 @@
-[Unit]
-Description=syncd service
-Requires=database.service updategraph.service
-{% if sonic_asic_platform == 'broadcom' %}
-Requires=opennsl-modules.service
-{% elif sonic_asic_platform == 'nephos' %}
-Requires=nps-modules-4.9.0-11-2-amd64.service
-{% endif %}
-After=database.service updategraph.service
-After=interfaces-config.service
-{% if sonic_asic_platform == 'broadcom' %}
-After=opennsl-modules.service
-{% elif sonic_asic_platform == 'nephos' %}
-After=nps-modules-4.9.0-11-2-amd64.service
-{% endif %}
-After=swss.service
-Before=ntp-config.service
-
-[Service]
-User=root
-Environment=sonic_asic_platform={{ sonic_asic_platform }}
-ExecStartPre=/usr/local/bin/syncd.sh start
-ExecStart=/usr/local/bin/syncd.sh wait
-ExecStop=/usr/local/bin/syncd.sh stop
-{% if sonic_asic_platform == 'mellanox' %}
-TimeoutStartSec=150
-{% endif %}
-
-[Install]
-WantedBy=multi-user.target
diff --git a/files/build_templates/single_instance/teamd.service.j2 b/files/build_templates/single_instance/teamd.service.j2
deleted file mode 100644
index be0521a4fb..0000000000
--- a/files/build_templates/single_instance/teamd.service.j2
+++ /dev/null
@@ -1,18 +0,0 @@
-[Unit]
-Description=TEAMD container
-Requires=updategraph.service
-After=updategraph.service swss.service
-Before=ntp-config.service
-StartLimitIntervalSec=1200
-StartLimitBurst=3
-
-[Service]
-User={{ sonicadmin_user }}
-ExecStartPre=/usr/bin/{{docker_container_name}}.sh start
-ExecStart=/usr/bin/{{docker_container_name}}.sh wait
-ExecStop=/usr/bin/{{docker_container_name}}.sh stop
-Restart=always
-RestartSec=30
-
-[Install]
-WantedBy=multi-user.target
diff --git a/files/build_templates/sonic_debian_extension.j2 b/files/build_templates/sonic_debian_extension.j2
index 66391c7bac..abc5361910 100644
--- a/files/build_templates/sonic_debian_extension.j2
+++ b/files/build_templates/sonic_debian_extension.j2
@@ -284,6 +284,7 @@ j2 files/build_templates/init_cfg.json.j2 | sudo tee $FILESYSTEM_ROOT/etc/sonic/
 # Copy config-setup script and service file
 j2 files/build_templates/config-setup.service.j2 | sudo tee $FILESYSTEM_ROOT/etc/systemd/system/config-setup.service
 sudo cp $IMAGE_CONFIGS/config-setup/config-setup $FILESYSTEM_ROOT/usr/bin/config-setup
+echo "config-setup.service" | sudo tee -a $GENERATED_SERVICE_FILE
 sudo LANG=C chroot $FILESYSTEM_ROOT systemctl enable config-setup.service
 
 # Copy SNMP configuration files
@@ -430,6 +431,9 @@ sudo LANG=C chroot $FILESYSTEM_ROOT umount -lf /sys
 sudo LANG=C cp $SCRIPTS_DIR/swss.sh $FILESYSTEM_ROOT/usr/local/bin/swss.sh
 sudo LANG=C cp $SCRIPTS_DIR/syncd.sh $FILESYSTEM_ROOT/usr/local/bin/syncd.sh
 
+# Copy sonic-netns-exec script
+sudo LANG=C cp $SCRIPTS_DIR/sonic-netns-exec $FILESYSTEM_ROOT/usr/bin/sonic-netns-exec
+
 # Copy systemd timer configuration
 # It implements delayed start of services
 sudo cp $BUILD_TEMPLATES/snmp.timer $FILESYSTEM_ROOT/etc/systemd/system/
diff --git a/files/image_config/topology/topology.sh b/files/image_config/topology/topology.sh
index 7013920ec0..dde7da2474 100755
--- a/files/image_config/topology/topology.sh
+++ b/files/image_config/topology/topology.sh
@@ -6,18 +6,16 @@
 #
 
 start() {
-	DB_FIRST_INSTANCE="/var/run/redis0/redis.sock"
-	TOPOLOGY_SCRIPT="topology.sh"
-	PLATFORM=`sonic-cfggen -H -v DEVICE_METADATA.localhost.platform -s $DB_FIRST_INSTANCE`
-	HWSKU=`sonic-cfggen -d -v 'DEVICE_METADATA["localhost"]["hwsku"]' -s $DB_FIRST_INSTANCE`
-        /usr/share/sonic/device/$PLATFORM/$HWSKU/$TOPOLOGY_SCRIPT start
+    TOPOLOGY_SCRIPT="topology.sh"
+    PLATFORM=`sonic-cfggen -H -v DEVICE_METADATA.localhost.platform`
+    HWSKU=`sonic-cfggen -d -v 'DEVICE_METADATA["localhost"]["hwsku"]'`
+    /usr/share/sonic/device/$PLATFORM/$HWSKU/$TOPOLOGY_SCRIPT start
 }
 stop() {
-        DB_FIRST_INSTANCE="/var/run/redis0/redis.sock"
-        TOPOLOGY_SCRIPT="topology.sh"
-        PLATFORM=`sonic-cfggen -H -v DEVICE_METADATA.localhost.platform -s $DB_FIRST_INSTANCE`
-        HWSKU=`sonic-cfggen -d -v 'DEVICE_METADATA["localhost"]["hwsku"]' -s $DB_FIRST_INSTANCE`
-        /usr/share/sonic/device/$PLATFORM/$HWSKU/$TOPOLOGY_SCRIPT stop 
+    TOPOLOGY_SCRIPT="topology.sh"
+    PLATFORM=`sonic-cfggen -H -v DEVICE_METADATA.localhost.platform`
+    HWSKU=`sonic-cfggen -d -v 'DEVICE_METADATA["localhost"]["hwsku"]'`
+    usr/share/sonic/device/$PLATFORM/$HWSKU/$TOPOLOGY_SCRIPT stop 
 }
 
 case "$1" in
diff --git a/files/scripts/sonic-netns-exec b/files/scripts/sonic-netns-exec
new file mode 100755
index 0000000000..166a2c7e4a
--- /dev/null
+++ b/files/scripts/sonic-netns-exec
@@ -0,0 +1,12 @@
+#!/bin/bash
+# Wrapper to execute any command in a specific
+# network namespace.
+# Usage:
+# sonic-netns-exec <namespace name> <command to be executed>
+NS="$1"
+shift
+if [ "$NS" != "" ]; then
+    ip netns exec $NS $@
+else
+    $@
+fi
diff --git a/files/scripts/swss.sh b/files/scripts/swss.sh
index a14d03e40f..360e331f36 100755
--- a/files/scripts/swss.sh
+++ b/files/scripts/swss.sh
@@ -1,10 +1,7 @@
 #!/bin/bash
 
-SERVICE="swss"
-PEER="syncd"
-DEPENDENT="teamd radv dhcp_relay"
-DEBUGLOG="/tmp/swss-syncd-debug.log"
-LOCKFILE="/tmp/swss-syncd-lock"
+DEPENDENT="radv dhcp_relay"
+MULTI_INST_DEPENDENT="teamd"
 
 function debug()
 {
@@ -14,25 +11,25 @@ function debug()
 
 function lock_service_state_change()
 {
-    debug "Locking ${LOCKFILE} from ${SERVICE} service"
+    debug "Locking ${LOCKFILE} from ${SERVICE}$DEV service"
 
     exec {LOCKFD}>${LOCKFILE}
     /usr/bin/flock -x ${LOCKFD}
     trap "/usr/bin/flock -u ${LOCKFD}" 0 2 3 15
 
-    debug "Locked ${LOCKFILE} (${LOCKFD}) from ${SERVICE} service"
+    debug "Locked ${LOCKFILE} (${LOCKFD}) from ${SERVICE}$DEV service"
 }
 
 function unlock_service_state_change()
 {
-    debug "Unlocking ${LOCKFILE} (${LOCKFD}) from ${SERVICE} service"
+    debug "Unlocking ${LOCKFILE} (${LOCKFD}) from ${SERVICE}$DEV service"
     /usr/bin/flock -u ${LOCKFD}
 }
 
 function check_warm_boot()
 {
-    SYSTEM_WARM_START=`sonic-db-cli STATE_DB hget "WARM_RESTART_ENABLE_TABLE|system" enable`
-    SERVICE_WARM_START=`sonic-db-cli STATE_DB hget "WARM_RESTART_ENABLE_TABLE|${SERVICE}" enable`
+    SYSTEM_WARM_START=`sonic-netns-exec "$NET_NS" sonic-db-cli STATE_DB hget "WARM_RESTART_ENABLE_TABLE|system" enable`
+    SERVICE_WARM_START=`sonic-netns-exec "$NET_NS" sonic-db-cli STATE_DB hget "WARM_RESTART_ENABLE_TABLE|${SERVICE}" enable`
     if [[ x"$SYSTEM_WARM_START" == x"true" ]] || [[ x"$SERVICE_WARM_START" == x"true" ]]; then
         WARM_BOOT="true"
     else
@@ -43,7 +40,7 @@ function check_warm_boot()
 function validate_restore_count()
 {
     if [[ x"$WARM_BOOT" == x"true" ]]; then
-        RESTORE_COUNT=`sonic-db-cli STATE_DB hget "WARM_RESTART_TABLE|orchagent" restore_count`
+        RESTORE_COUNT=`sonic-netns-exec "$NET_NS" sonic-db-cli STATE_DB hget "WARM_RESTART_TABLE|orchagent" restore_count`
         # We have to make sure db data has not been flushed.
         if [[ -z "$RESTORE_COUNT" ]]; then
             WARM_BOOT="false"
@@ -54,10 +51,10 @@ function validate_restore_count()
 function wait_for_database_service()
 {
     # Wait for redis server start before database clean
-    /usr/bin/docker exec database ping_pong_db_insts
+    /usr/bin/docker exec database$DEV ping_pong_db_insts
 
     # Wait for configDB initialization
-    until [[ $(sonic-db-cli CONFIG_DB GET "CONFIG_DB_INITIALIZED") ]];
+    until [[ $(sonic-netns-exec "$NET_NS" sonic-db-cli CONFIG_DB GET "CONFIG_DB_INITIALIZED") ]];
         do sleep 1;
     done
 }
@@ -67,7 +64,7 @@ function wait_for_database_service()
 # $2 the string of a list of table prefixes
 function clean_up_tables()
 {
-    sonic-db-cli $1 EVAL "
+    sonic-netns-exec "$NET_NS" sonic-db-cli $1 EVAL "
     local tables = {$2}
     for i = 1, table.getn(tables) do
         local matches = redis.call('KEYS', tables[i])
@@ -81,25 +78,48 @@ start_peer_and_dependent_services() {
     check_warm_boot
 
     if [[ x"$WARM_BOOT" != x"true" ]]; then
-        /bin/systemctl start ${PEER}
+        if [[ ! -z $DEV ]]; then
+            /bin/systemctl start ${PEER}@$DEV
+        else
+           /bin/systemctl start ${PEER}
+        fi
         for dep in ${DEPENDENT}; do
             /bin/systemctl start ${dep}
         done
+        for dep in ${MULTI_INST_DEPENDENT}; do
+            if [[ ! -z $DEV ]]; then
+                /bin/systemctl start ${dep}@$DEV
+            else
+                /bin/systemctl start ${dep}
+            fi
+        done
     fi
 }
 
 stop_peer_and_dependent_services() {
     # if warm start enabled or peer lock exists, don't stop peer service docker
     if [[ x"$WARM_BOOT" != x"true" ]]; then
-        /bin/systemctl stop ${PEER}
+        if [[ ! -z $DEV ]]; then
+            /bin/systemctl stop ${PEER}@$DEV
+        else
+            /bin/systemctl stop ${PEER}
+        fi
         for dep in ${DEPENDENT}; do
             /bin/systemctl stop ${dep}
         done
+        for dep in ${MULTI_INST_DEPENDENT}; do
+            if [[ ! -z $DEV ]]; then
+                /bin/systemctl stop ${dep}@$DEV
+            else
+                /bin/systemctl stop ${dep}
+            fi
+        done
+
     fi
 }
 
 start() {
-    debug "Starting ${SERVICE} service..."
+    debug "Starting ${SERVICE}$DEV service..."
 
     lock_service_state_change
 
@@ -107,21 +127,21 @@ start() {
     check_warm_boot
     validate_restore_count
 
-    debug "Warm boot flag: ${SERVICE} ${WARM_BOOT}."
+    debug "Warm boot flag: ${SERVICE}$DEV ${WARM_BOOT}."
 
     # Don't flush DB during warm boot
     if [[ x"$WARM_BOOT" != x"true" ]]; then
         debug "Flushing APP, ASIC, COUNTER, CONFIG, and partial STATE databases ..."
-        sonic-db-cli APPL_DB FLUSHDB
-        sonic-db-cli ASIC_DB FLUSHDB
-        sonic-db-cli COUNTERS_DB FLUSHDB
-        sonic-db-cli FLEX_COUNTER_DB FLUSHDB
+        sonic-netns-exec "$NET_NS" sonic-db-cli APPL_DB FLUSHDB
+        sonic-netns-exec "$NET_NS" sonic-db-cli ASIC_DB FLUSHDB
+        sonic-netns-exec "$NET_NS" sonic-db-cli COUNTERS_DB FLUSHDB
+        sonic-netns-exec "$NET_NS" sonic-db-cli FLEX_COUNTER_DB FLUSHDB
         clean_up_tables STATE_DB "'PORT_TABLE*', 'MGMT_PORT_TABLE*', 'VLAN_TABLE*', 'VLAN_MEMBER_TABLE*', 'LAG_TABLE*', 'LAG_MEMBER_TABLE*', 'INTERFACE_TABLE*', 'MIRROR_SESSION*', 'VRF_TABLE*', 'FDB_TABLE*'"
     fi
 
     # start service docker
-    /usr/bin/${SERVICE}.sh start
-    debug "Started ${SERVICE} service..."
+    /usr/bin/${SERVICE}.sh start $DEV
+    debug "Started ${SERVICE}$DEV service..."
 
     # Unlock has to happen before reaching out to peer service
     unlock_service_state_change
@@ -134,7 +154,11 @@ wait() {
     # NOTE: This assumes Docker containers share the same names as their
     # corresponding services
     for SECS in {1..60}; do
-        RUNNING=$(docker inspect -f '{{.State.Running}}' ${PEER})
+        if [[ ! -z $DEV ]]; then
+            RUNNING=$(docker inspect -f '{{.State.Running}}' ${PEER}$DEV)
+        else
+            RUNNING=$(docker inspect -f '{{.State.Running}}' ${PEER})
+        fi
         if [[ x"$RUNNING" == x"true" ]]; then
             break
         else
@@ -144,20 +168,24 @@ wait() {
 
     # NOTE: This assumes Docker containers share the same names as their
     # corresponding services
-    /usr/bin/docker-wait-any ${SERVICE} ${PEER}
+    if [[ ! -z $DEV ]]; then
+        /usr/bin/docker-wait-any ${SERVICE}$DEV ${PEER}$DEV
+    else
+        /usr/bin/docker-wait-any ${SERVICE} ${PEER}
+    fi
 }
 
 stop() {
-    debug "Stopping ${SERVICE} service..."
+    debug "Stopping ${SERVICE}$DEV service..."
 
     [[ -f ${LOCKFILE} ]] || /usr/bin/touch ${LOCKFILE}
 
     lock_service_state_change
     check_warm_boot
-    debug "Warm boot flag: ${SERVICE} ${WARM_BOOT}."
+    debug "Warm boot flag: ${SERVICE}$DEV ${WARM_BOOT}."
 
-    /usr/bin/${SERVICE}.sh stop
-    debug "Stopped ${SERVICE} service..."
+    /usr/bin/${SERVICE}.sh stop $DEV
+    debug "Stopped ${SERVICE}$DEV service..."
 
     # Flush FAST_REBOOT table when swss needs to stop. The only
     # time when this would take effect is when fast-reboot
@@ -172,6 +200,18 @@ stop() {
     stop_peer_and_dependent_services
 }
 
+DEV=$2
+
+SERVICE="swss"
+PEER="syncd"
+DEBUGLOG="/tmp/swss-syncd-debug$DEV.log"
+LOCKFILE="/tmp/swss-syncd-lock$DEV"
+if [ "$DEV" ]; then
+    NET_NS="asic$DEV" #name of the network namespace
+else
+    NET_NS=""   
+fi
+
 case "$1" in
     start|wait|stop)
         $1
diff --git a/files/scripts/syncd.sh b/files/scripts/syncd.sh
index 4b47e7ad4c..9847cfec94 100755
--- a/files/scripts/syncd.sh
+++ b/files/scripts/syncd.sh
@@ -1,9 +1,5 @@
 #!/bin/bash
 
-SERVICE="syncd"
-PEER="swss"
-DEBUGLOG="/tmp/swss-syncd-debug.log"
-LOCKFILE="/tmp/swss-syncd-lock"
 
 function debug()
 {
@@ -13,25 +9,25 @@ function debug()
 
 function lock_service_state_change()
 {
-    debug "Locking ${LOCKFILE} from ${SERVICE} service"
+    debug "Locking ${LOCKFILE} from ${SERVICE}$DEV service"
 
     exec {LOCKFD}>${LOCKFILE}
     /usr/bin/flock -x ${LOCKFD}
     trap "/usr/bin/flock -u ${LOCKFD}" 0 2 3 15
 
-    debug "Locked ${LOCKFILE} (${LOCKFD}) from ${SERVICE} service"
+    debug "Locked ${LOCKFILE} (${LOCKFD}) from ${SERVICE}$DEV service"
 }
 
 function unlock_service_state_change()
 {
-    debug "Unlocking ${LOCKFILE} (${LOCKFD}) from ${SERVICE} service"
+    debug "Unlocking ${LOCKFILE} (${LOCKFD}) from ${SERVICE}$DEV service"
     /usr/bin/flock -u ${LOCKFD}
 }
 
 function check_warm_boot()
 {
-    SYSTEM_WARM_START=`sonic-db-cli STATE_DB hget "WARM_RESTART_ENABLE_TABLE|system" enable`
-    SERVICE_WARM_START=`sonic-db-cli STATE_DB hget "WARM_RESTART_ENABLE_TABLE|${SERVICE}" enable`
+    SYSTEM_WARM_START=`sonic-netns-exec "$NET_NS" sonic-db-cli STATE_DB hget "WARM_RESTART_ENABLE_TABLE|system" enable`
+    SERVICE_WARM_START=`sonic-netns-exec "$NET_NS" sonic-db-cli STATE_DB hget "WARM_RESTART_ENABLE_TABLE|${SERVICE}" enable`
     # SYSTEM_WARM_START could be empty, always make WARM_BOOT meaningful.
     if [[ x"$SYSTEM_WARM_START" == x"true" ]] || [[ x"$SERVICE_WARM_START" == x"true" ]]; then
         WARM_BOOT="true"
@@ -43,10 +39,10 @@ function check_warm_boot()
 function wait_for_database_service()
 {
     # Wait for redis server start before database clean
-    /usr/bin/docker exec database ping_pong_db_insts
+    /usr/bin/docker exec database$DEV ping_pong_db_insts
 
     # Wait for configDB initialization
-    until [[ $(sonic-db-cli CONFIG_DB GET "CONFIG_DB_INITIALIZED") ]];
+    until [[ $(sonic-netns-exec "$NET_NS" sonic-db-cli CONFIG_DB GET "CONFIG_DB_INITIALIZED") ]];
         do sleep 1;
     done
 }
@@ -63,7 +59,7 @@ function getBootType()
         ;;
     *SONIC_BOOT_TYPE=fast*|*fast-reboot*)
         # check that the key exists
-        if [[ $(sonic-db-cli STATE_DB GET "FAST_REBOOT|system") == "1" ]]; then
+        if [[ $(sonic-netns-exec "$NET_NS" sonic-db-cli STATE_DB GET "FAST_REBOOT|system") == "1" ]]; then
             TYPE='fast'
         else
             TYPE='cold'
@@ -76,7 +72,7 @@ function getBootType()
 }
 
 start() {
-    debug "Starting ${SERVICE} service..."
+    debug "Starting ${SERVICE}$DEV service..."
 
     lock_service_state_change
 
@@ -85,7 +81,7 @@ start() {
     wait_for_database_service
     check_warm_boot
 
-    debug "Warm boot flag: ${SERVICE} ${WARM_BOOT}."
+    debug "Warm boot flag: ${SERVICE}$DEV ${WARM_BOOT}."
 
     if [[ x"$WARM_BOOT" == x"true" ]]; then
         # Leave a mark for syncd scripts running inside docker.
@@ -127,7 +123,7 @@ start() {
     fi
 
     # start service docker
-    /usr/bin/${SERVICE}.sh start
+    /usr/bin/${SERVICE}.sh start $DEV
     debug "Started ${SERVICE} service..."
 
     unlock_service_state_change
@@ -139,15 +135,15 @@ wait() {
         /bin/systemctl start pmon
         debug "Started pmon service"
     fi
-    /usr/bin/${SERVICE}.sh wait
+    /usr/bin/${SERVICE}.sh wait $DEV
 }
 
 stop() {
-    debug "Stopping ${SERVICE} service..."
+    debug "Stopping ${SERVICE}$DEV service..."
 
     lock_service_state_change
     check_warm_boot
-    debug "Warm boot flag: ${SERVICE} ${WARM_BOOT}."
+    debug "Warm boot flag: ${SERVICE}$DEV ${WARM_BOOT}."
 
     if [[ x"$WARM_BOOT" == x"true" ]]; then
         TYPE=warm
@@ -163,19 +159,19 @@ stop() {
 
     if [[ x$sonic_asic_platform != x"mellanox" ]] || [[ x$TYPE != x"cold" ]]; then
         debug "${TYPE} shutdown syncd process ..."
-        /usr/bin/docker exec -i syncd /usr/bin/syncd_request_shutdown --${TYPE}
+        /usr/bin/docker exec -i syncd$DEV /usr/bin/syncd_request_shutdown --${TYPE}
 
         # wait until syncd quits gracefully
-        while docker top syncd | grep -q /usr/bin/syncd; do
+        while docker top syncd$DEV | grep -q /usr/bin/syncd; do
             sleep 0.1
         done
 
-        /usr/bin/docker exec -i syncd /bin/sync
+        /usr/bin/docker exec -i syncd$DEV /bin/sync
         debug "Finished ${TYPE} shutdown syncd process ..."
     fi
 
-    /usr/bin/${SERVICE}.sh stop
-    debug "Stopped ${SERVICE} service..."
+    /usr/bin/${SERVICE}.sh stop $DEV
+    debug "Stopped ${SERVICE}$DEV service..."
 
     # platform specific tasks
 
@@ -192,6 +188,19 @@ stop() {
     unlock_service_state_change
 }
 
+OP=$1
+DEV=$2
+
+SERVICE="syncd"
+PEER="swss"
+DEBUGLOG="/tmp/swss-syncd-debug$DEV.log"
+LOCKFILE="/tmp/swss-syncd-lock$DEV"
+if [ "$DEV" ]; then
+    NET_NS="asic$DEV" #name of the network namespace
+else
+    NET_NS=""
+fi
+
 case "$1" in
     start|wait|stop)
         $1
diff --git a/platform/vs/sonic_multiasic.xml b/platform/vs/sonic_multiasic.xml
index b406bfd404..b571b5122a 100644
--- a/platform/vs/sonic_multiasic.xml
+++ b/platform/vs/sonic_multiasic.xml
@@ -1,7 +1,7 @@
 <domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
   <name>sonic</name>
   <memory unit='GB'>8</memory>
-  <vcpu placement='static'>2</vcpu>
+  <vcpu placement='static'>8</vcpu>
   <resource>
     <partition>/machine</partition>
   </resource>
diff --git a/rules/docker-fpm-frr.mk b/rules/docker-fpm-frr.mk
index 517aff3ea9..45a755a928 100644
--- a/rules/docker-fpm-frr.mk
+++ b/rules/docker-fpm-frr.mk
@@ -24,7 +24,6 @@ SONIC_STRETCH_DBG_DOCKERS += $(DOCKER_FPM_FRR_DBG)
 $(DOCKER_FPM_FRR)_CONTAINER_NAME = bgp
 $(DOCKER_FPM_FRR)_RUN_OPT += --privileged -t
 $(DOCKER_FPM_FRR)_RUN_OPT += -v /etc/sonic:/etc/sonic:ro
-$(DOCKER_FPM_FRR)_RUN_OPT += -v /etc/sonic/frr:/etc/frr:rw
 
 $(DOCKER_FPM_FRR)_FILES += $(SUPERVISOR_PROC_EXIT_LISTENER_SCRIPT)
 
diff --git a/slave.mk b/slave.mk
index 16c4d4ef6a..9a154699cc 100644
--- a/slave.mk
+++ b/slave.mk
@@ -667,6 +667,7 @@ $(addprefix $(TARGET_PATH)/, $(SONIC_INSTALLERS)) : $(TARGET_PATH)/% : \
 	export platform_common_py2_wheel_path="$(addprefix $(PYTHON_WHEELS_PATH)/,$(SONIC_PLATFORM_COMMON_PY2))"
 	export redis_dump_load_py2_wheel_path="$(addprefix $(PYTHON_WHEELS_PATH)/,$(REDIS_DUMP_LOAD_PY2))"
 	export install_debug_image="$(INSTALL_DEBUG_TOOLS)"
+	export multi_instance="false"
 
 	$(foreach docker, $($*_DOCKERS),\
 		export docker_image="$(docker)"
@@ -677,18 +678,21 @@ $(addprefix $(TARGET_PATH)/, $(SONIC_INSTALLERS)) : $(TARGET_PATH)/% : \
 
 		if [ -f files/build_templates/$($(docker:-dbg.gz=.gz)_CONTAINER_NAME).service.j2 ]; then
 			j2 files/build_templates/$($(docker:-dbg.gz=.gz)_CONTAINER_NAME).service.j2 > $($(docker:-dbg.gz=.gz)_CONTAINER_NAME).service
+
+			# Set the flag GLOBAL for all the global system-wide dockers.
+			$(if $(shell ls files/build_templates/$($(docker:-dbg.gz=.gz)_CONTAINER_NAME).service.j2 2>/dev/null),\
+				$(eval $(docker:-dbg.gz=.gz)_GLOBAL = yes)
+			)
 		fi
-
-		if [ -f files/build_templates/multi_instance/$($(docker:-dbg.gz=.gz)_CONTAINER_NAME)@.service.j2 ]; then
-			j2 files/build_templates/multi_instance/$($(docker:-dbg.gz=.gz)_CONTAINER_NAME)@.service.j2 > $($(docker:-dbg.gz=.gz)_CONTAINER_NAME)@.service
-
-			# performs the same check as the elif above, except with make commands so eval behaves properly
-			$(if $(shell ls files/build_templates/multi_instance/$($(docker:-dbg.gz=.gz)_CONTAINER_NAME)@.service.j2 2>/dev/null),\
+		# Any service template, inside instance directory, will be used to generate .service and @.service file.
+		if [ -f files/build_templates/per_namespace/$($(docker:-dbg.gz=.gz)_CONTAINER_NAME).service.j2 ]; then
+			export multi_instance="true"
+			j2 files/build_templates/per_namespace/$($(docker:-dbg.gz=.gz)_CONTAINER_NAME).service.j2 > $($(docker:-dbg.gz=.gz)_CONTAINER_NAME)@.service
+			$(if $(shell ls files/build_templates/per_namespace/$($(docker:-dbg.gz=.gz)_CONTAINER_NAME).service.j2 2>/dev/null),\
 				$(eval $(docker:-dbg.gz=.gz)_TEMPLATE = yes)
-			 )
-		fi
-		if [ -f files/build_templates/single_instance/$($(docker:-dbg.gz=.gz)_CONTAINER_NAME).service.j2 ]; then
-			j2 files/build_templates/single_instance/$($(docker:-dbg.gz=.gz)_CONTAINER_NAME).service.j2 > $($(docker:-dbg.gz=.gz)_CONTAINER_NAME).service
+			)
+			export multi_instance="false"
+			j2 files/build_templates/per_namespace/$($(docker:-dbg.gz=.gz)_CONTAINER_NAME).service.j2 > $($(docker:-dbg.gz=.gz)_CONTAINER_NAME).service
 		fi
 		j2 files/build_templates/docker_image_ctl.j2 > $($(docker:-dbg.gz=.gz)_CONTAINER_NAME).sh
 		chmod +x $($(docker:-dbg.gz=.gz)_CONTAINER_NAME).sh
@@ -699,8 +703,12 @@ $(addprefix $(TARGET_PATH)/, $(SONIC_INSTALLERS)) : $(TARGET_PATH)/% : \
 
 	# Marks template services with an "@" according to systemd convention
 	# If the $($docker)_TEMPLATE) variable is set, the service will be treated as a template
+	# If the $($docker)_GLOBAL) and $($docker)_TEMPLATE) variables are set the service will be added both as a global and template service.
 	$(foreach docker, $($*_DOCKERS),\
 		$(if $($(docker:-dbg.gz=.gz)_TEMPLATE),\
+			$(if $($(docker:-dbg.gz=.gz)_GLOBAL),\
+				$(eval SERVICES += "$(addsuffix .service, $($(docker:-dbg.gz=.gz)_CONTAINER_NAME))")\
+			)\
 			$(eval SERVICES += "$(addsuffix @.service, $($(docker:-dbg.gz=.gz)_CONTAINER_NAME))"),\
 			$(eval SERVICES += "$(addsuffix .service, $($(docker:-dbg.gz=.gz)_CONTAINER_NAME))")
 		)