[dhcp_relay] Add "vlan missing ip helper" dhcp relay unittest (#10654) (#11794)

2022-08-24 19:53:11 -07:00 · 2022-08-24 19:53:11 -07:00 · 973fb9e494
commit 973fb9e494
parent 42e29246b9
11 changed files with 1175 additions and 25 deletions
--- a/dockers/docker-dhcp-relay/dhcp-relay.monitors.j2
+++ b/dockers/docker-dhcp-relay/dhcp-relay.monitors.j2
@ -6,7 +6,7 @@ programs=
 {% if VLAN and vlan_name in VLAN and 'dhcp_servers' in VLAN[vlan_name] and VLAN[vlan_name]['dhcp_servers']|length > 0 %}
 {% set _dummy = monitor_instance.update({'flag': True}) %}
 {%- endif %}
-{% if VLAN and vlan_name in VLAN and 'dhcpv6_servers' in VLAN[vlan_name] and VLAN[vlan_name]['dhcpv6_servers']|length > 0 %}
+{% if DHCP_RELAY and vlan_name in DHCP_RELAY and DHCP_RELAY[vlan_name]['dhcpv6_servers']|length > 0 %}
 {% set _dummy = monitor_instance.update({'flag': True}) %}
 {%- endif %}
 {% if monitor_instance.flag %}
@ -31,7 +31,7 @@ dhcpmon-{{ vlan_name }}
 {% endfor %}
 {% endif %}
 {# Check DHCPv6 agents #}
-{% if VLAN and vlan_name in VLAN and 'dhcpv6_servers' in VLAN[vlan_name] and VLAN[vlan_name]['dhcpv6_servers']|length > 0 %}
+{% if DHCP_RELAY and vlan_name in DHCP_RELAY and DHCP_RELAY[vlan_name]['dhcpv6_servers']|length > 0 %}
 {% for dhcpv6_server in VLAN[vlan_name]['dhcpv6_servers'] %}
 {% if dhcpv6_server | ipv6 %}
 {% set _dummy = relay_for_ipv6.update({'flag': True}) %}
@ -68,7 +68,6 @@ stderr_logfile=syslog
 dependent_startup=true
 dependent_startup_wait_for=
 {%- if relay_for_ipv4.flag %}isc-dhcpv4-relay-{{ vlan_name }}:running {% endif %}
-{% if relay_for_ipv6.flag %}dhcp6relay:running{% endif %}


 {% set _dummy = relay_for_ipv4.update({'flag': False}) %}
--- a/dockers/docker-dhcp-relay/dhcp-relay.programs.j2
+++ b/dockers/docker-dhcp-relay/dhcp-relay.programs.j2
@ -1,5 +1,6 @@
 [group:dhcp-relay]
 programs=
+{%- set relay_for_ipv6 = { 'flag': False } %}
 {%- set add_preceding_comma = { 'flag': False } %}
 {% for vlan_name in VLAN_INTERFACE %}
 {# Append DHCPv4 agents #}
@ -8,10 +9,13 @@ programs=
 {% set _dummy = add_preceding_comma.update({'flag': True}) %}
 isc-dhcpv4-relay-{{ vlan_name }}
 {%- endif %}
+{% if DHCP_RELAY and vlan_name in DHCP_RELAY and DHCP_RELAY[vlan_name]['dhcpv6_servers']|length > 0 %}
+{% set _dummy = relay_for_ipv6.update({'flag': True})  %}
+{%- endif %}
+{% endfor %}
 {# Append DHCPv6 agents #}
-{% if VLAN and vlan_name in VLAN and 'dhcpv6_servers' in VLAN[vlan_name] and VLAN[vlan_name]['dhcpv6_servers']|length > 0 %}
+{% if relay_for_ipv6.flag %}
 {% if add_preceding_comma.flag %},{% endif %}
 {% set _dummy = add_preceding_comma.update({'flag': True}) %}
 dhcp6relay
-{%- endif %}
-{% endfor %}
+{% endif %}
--- a/dockers/docker-dhcp-relay/dhcpv6-relay.agents.j2
+++ b/dockers/docker-dhcp-relay/dhcpv6-relay.agents.j2
@ -1,15 +1,17 @@
 {# Append DHCPv6 agents #}
-{% if VLAN and vlan_name in VLAN and 'dhcpv6_servers' in VLAN[vlan_name] and VLAN[vlan_name]['dhcpv6_servers']|length > 0 %}
-{% for dhcpv6_server in VLAN[vlan_name]['dhcpv6_servers'] %}
+{% for vlan_name in VLAN_INTERFACE %}
+{% if DHCP_RELAY and vlan_name in DHCP_RELAY and DHCP_RELAY[vlan_name]['dhcpv6_servers']|length > 0 %}
+{% for dhcpv6_server in DHCP_RELAY[vlan_name]['dhcpv6_servers'] %}
 {% if dhcpv6_server | ipv6 %}
 {% set _dummy = relay_for_ipv6.update({'flag': True}) %}
 {% endif %}
 {% endfor %}
+{% endif %}
+{% endfor %}
 {% if relay_for_ipv6.flag %}
 {% set _dummy = relay_for_ipv6.update({'flag': False}) %}
 [program:dhcp6relay]
 command=/usr/sbin/dhcp6relay
-
 priority=3
 autostart=false
 autorestart=false
@ -19,4 +21,3 @@ dependent_startup=true
 dependent_startup_wait_for=start:exited

 {% endif %}
-{% endif %}
--- a/dockers/docker-dhcp-relay/docker-dhcp-relay.supervisord.conf.j2
+++ b/dockers/docker-dhcp-relay/docker-dhcp-relay.supervisord.conf.j2
@ -48,7 +48,7 @@ dependent_startup_wait_for=rsyslogd:running
 {% if VLAN and vlan_name in VLAN and 'dhcp_servers' in VLAN[vlan_name] and VLAN[vlan_name]['dhcp_servers']|length > 0 %}
 {% set _dummy = ipv4_num_relays.update({'count': ipv4_num_relays.count + 1}) %}
 {% endif %}
-{% if VLAN and vlan_name in VLAN and 'dhcpv6_servers' in VLAN[vlan_name] and VLAN[vlan_name]['dhcpv6_servers']|length > 0 %}
+{% if DHCP_RELAY and vlan_name in DHCP_RELAY and DHCP_RELAY[vlan_name]['dhcpv6_servers']|length > 0 %}
 {% set _dummy = ipv6_num_relays.update({'count': ipv6_num_relays.count + 1}) %}
 {% endif %}
 {% endfor %}
@ -62,9 +62,9 @@ dependent_startup_wait_for=rsyslogd:running
 {% set relay_for_ipv6 = { 'flag': False } %}
 {% for vlan_name in VLAN_INTERFACE %}
 {% include 'dhcpv4-relay.agents.j2' %}
-{% include 'dhcpv6-relay.agents.j2' %}
 {% endfor %}

+{% include 'dhcpv6-relay.agents.j2' %}
 {% include 'dhcp-relay.monitors.j2' %}
 {% endif %}
 {% endif %}
--- a/src/sonic-config-engine/tests/sample_output/py2/docker-dhcp-relay-no-ip-helper.supervisord.conf
+++ b/src/sonic-config-engine/tests/sample_output/py2/docker-dhcp-relay-no-ip-helper.supervisord.conf
@ -0,0 +1,80 @@
+[supervisord]
+logfile_maxbytes=1MB
+logfile_backups=2
+nodaemon=true
+
+[eventlistener:dependent-startup]
+command=python3 -m supervisord_dependent_startup
+autostart=true
+autorestart=unexpected
+startretries=0
+exitcodes=0,3
+events=PROCESS_STATE
+buffer_size=1024
+
+[eventlistener:supervisor-proc-exit-listener]
+command=/usr/bin/supervisor-proc-exit-listener --container-name dhcp_relay
+events=PROCESS_STATE_EXITED,PROCESS_STATE_RUNNING
+autostart=true
+autorestart=unexpected
+buffer_size=1024
+
+[program:rsyslogd]
+command=/usr/sbin/rsyslogd -n -iNONE
+priority=1
+autostart=false
+autorestart=false
+stdout_logfile=syslog
+stderr_logfile=syslog
+dependent_startup=true
+
+[program:start]
+command=/usr/bin/start.sh
+priority=2
+autostart=false
+autorestart=false
+startsecs=0
+stdout_logfile=syslog
+stderr_logfile=syslog
+dependent_startup=true
+dependent_startup_wait_for=rsyslogd:running
+
+[group:dhcp-relay]
+programs=isc-dhcpv4-relay-Vlan1000,dhcp6relay
+
+
+[program:isc-dhcpv4-relay-Vlan1000]
+command=/usr/sbin/dhcrelay -d -m discard -a %%h:%%p %%P --name-alias-map-file /tmp/port-name-alias-map.txt -id Vlan1000 -iu Vlan2000 -iu PortChannel02 -iu PortChannel03 -iu PortChannel04 -iu PortChannel01 192.0.0.1 192.0.0.2
+priority=3
+autostart=false
+autorestart=false
+stdout_logfile=syslog
+stderr_logfile=syslog
+dependent_startup=true
+dependent_startup_wait_for=start:exited
+
+
+[program:dhcp6relay]
+command=/usr/sbin/dhcp6relay
+priority=3
+autostart=false
+autorestart=false
+stdout_logfile=syslog
+stderr_logfile=syslog
+dependent_startup=true
+dependent_startup_wait_for=start:exited
+
+[group:dhcpmon]
+programs=dhcpmon-Vlan1000
+
+[program:dhcpmon-Vlan1000]
+command=/usr/sbin/dhcpmon -id Vlan1000 -iu Vlan2000 -iu PortChannel02 -iu PortChannel03 -iu PortChannel04 -iu PortChannel01 -im eth0
+priority=4
+autostart=false
+autorestart=false
+stdout_logfile=syslog
+stderr_logfile=syslog
+dependent_startup=true
+dependent_startup_wait_for=isc-dhcpv4-relay-Vlan1000:running 
+
+
--- a/src/sonic-config-engine/tests/sample_output/py2/docker-dhcp-relay.supervisord.conf
+++ b/src/sonic-config-engine/tests/sample_output/py2/docker-dhcp-relay.supervisord.conf
@ -40,7 +40,8 @@ dependent_startup=true
 dependent_startup_wait_for=rsyslogd:running

 [group:dhcp-relay]
-programs=isc-dhcpv4-relay-Vlan1000,dhcp6relay
+programs=isc-dhcpv4-relay-Vlan1000,isc-dhcpv4-relay-Vlan2000,dhcp6relay
+

 [program:isc-dhcpv4-relay-Vlan1000]
 command=/usr/sbin/dhcrelay -d -m discard -a %%h:%%p %%P --name-alias-map-file /tmp/port-name-alias-map.txt -id Vlan1000 -iu Vlan2000 -iu PortChannel02 -iu PortChannel03 -iu PortChannel04 -iu PortChannel01 192.0.0.1 192.0.0.2
@ -52,9 +53,8 @@ stderr_logfile=syslog
 dependent_startup=true
 dependent_startup_wait_for=start:exited

-[program:dhcp6relay]
-command=/usr/sbin/dhcp6relay
-
+[program:isc-dhcpv4-relay-Vlan2000]
+command=/usr/sbin/dhcrelay -d -m discard -a %%h:%%p %%P --name-alias-map-file /tmp/port-name-alias-map.txt -id Vlan2000 -iu Vlan1000 -iu PortChannel02 -iu PortChannel03 -iu PortChannel04 -iu PortChannel01 192.0.0.3 192.0.0.4
 priority=3
 autostart=false
 autorestart=false
@ -64,8 +64,18 @@ dependent_startup=true
 dependent_startup_wait_for=start:exited


+[program:dhcp6relay]
+command=/usr/sbin/dhcp6relay
+priority=3
+autostart=false
+autorestart=false
+stdout_logfile=syslog
+stderr_logfile=syslog
+dependent_startup=true
+dependent_startup_wait_for=start:exited
+
 [group:dhcpmon]
-programs=dhcpmon-Vlan1000
+programs=dhcpmon-Vlan1000,dhcpmon-Vlan2000

 [program:dhcpmon-Vlan1000]
 command=/usr/sbin/dhcpmon -id Vlan1000 -iu Vlan2000 -iu PortChannel02 -iu PortChannel03 -iu PortChannel04 -iu PortChannel01 -im eth0
@ -75,6 +85,16 @@ autorestart=false
 stdout_logfile=syslog
 stderr_logfile=syslog
 dependent_startup=true
-dependent_startup_wait_for=isc-dhcpv4-relay-Vlan1000:running dhcp6relay:running
+dependent_startup_wait_for=isc-dhcpv4-relay-Vlan1000:running 
+
+[program:dhcpmon-Vlan2000]
+command=/usr/sbin/dhcpmon -id Vlan2000 -iu Vlan1000 -iu PortChannel02 -iu PortChannel03 -iu PortChannel04 -iu PortChannel01 -im eth0
+priority=4
+autostart=false
+autorestart=false
+stdout_logfile=syslog
+stderr_logfile=syslog
+dependent_startup=true
+dependent_startup_wait_for=isc-dhcpv4-relay-Vlan2000:running 


--- a/src/sonic-config-engine/tests/sample_output/py3/docker-dhcp-relay-no-ip-helper.supervisord.conf
+++ b/src/sonic-config-engine/tests/sample_output/py3/docker-dhcp-relay-no-ip-helper.supervisord.conf
@ -0,0 +1,80 @@
+[supervisord]
+logfile_maxbytes=1MB
+logfile_backups=2
+nodaemon=true
+
+[eventlistener:dependent-startup]
+command=python3 -m supervisord_dependent_startup
+autostart=true
+autorestart=unexpected
+startretries=0
+exitcodes=0,3
+events=PROCESS_STATE
+buffer_size=1024
+
+[eventlistener:supervisor-proc-exit-listener]
+command=/usr/bin/supervisor-proc-exit-listener --container-name dhcp_relay
+events=PROCESS_STATE_EXITED,PROCESS_STATE_RUNNING
+autostart=true
+autorestart=unexpected
+buffer_size=1024
+
+[program:rsyslogd]
+command=/usr/sbin/rsyslogd -n -iNONE
+priority=1
+autostart=false
+autorestart=false
+stdout_logfile=syslog
+stderr_logfile=syslog
+dependent_startup=true
+
+[program:start]
+command=/usr/bin/start.sh
+priority=2
+autostart=false
+autorestart=false
+startsecs=0
+stdout_logfile=syslog
+stderr_logfile=syslog
+dependent_startup=true
+dependent_startup_wait_for=rsyslogd:running
+
+[group:dhcp-relay]
+programs=isc-dhcpv4-relay-Vlan1000,dhcp6relay
+
+
+[program:isc-dhcpv4-relay-Vlan1000]
+command=/usr/sbin/dhcrelay -d -m discard -a %%h:%%p %%P --name-alias-map-file /tmp/port-name-alias-map.txt -id Vlan1000 -iu Vlan2000 -iu PortChannel01 -iu PortChannel02 -iu PortChannel03 -iu PortChannel04 192.0.0.1 192.0.0.2
+priority=3
+autostart=false
+autorestart=false
+stdout_logfile=syslog
+stderr_logfile=syslog
+dependent_startup=true
+dependent_startup_wait_for=start:exited
+
+
+[program:dhcp6relay]
+command=/usr/sbin/dhcp6relay
+priority=3
+autostart=false
+autorestart=false
+stdout_logfile=syslog
+stderr_logfile=syslog
+dependent_startup=true
+dependent_startup_wait_for=start:exited
+
+[group:dhcpmon]
+programs=dhcpmon-Vlan1000
+
+[program:dhcpmon-Vlan1000]
+command=/usr/sbin/dhcpmon -id Vlan1000 -iu Vlan2000 -iu PortChannel01 -iu PortChannel02 -iu PortChannel03 -iu PortChannel04 -im eth0
+priority=4
+autostart=false
+autorestart=false
+stdout_logfile=syslog
+stderr_logfile=syslog
+dependent_startup=true
+dependent_startup_wait_for=isc-dhcpv4-relay-Vlan1000:running 
+
+
--- a/src/sonic-config-engine/tests/sample_output/py3/docker-dhcp-relay.supervisord.conf
+++ b/src/sonic-config-engine/tests/sample_output/py3/docker-dhcp-relay.supervisord.conf
@ -40,7 +40,8 @@ dependent_startup=true
 dependent_startup_wait_for=rsyslogd:running

 [group:dhcp-relay]
-programs=isc-dhcpv4-relay-Vlan1000,dhcp6relay
+programs=isc-dhcpv4-relay-Vlan1000,isc-dhcpv4-relay-Vlan2000,dhcp6relay
+

 [program:isc-dhcpv4-relay-Vlan1000]
 command=/usr/sbin/dhcrelay -d -m discard -a %%h:%%p %%P --name-alias-map-file /tmp/port-name-alias-map.txt -id Vlan1000 -iu Vlan2000 -iu PortChannel01 -iu PortChannel02 -iu PortChannel03 -iu PortChannel04 192.0.0.1 192.0.0.2
@ -52,9 +53,8 @@ stderr_logfile=syslog
 dependent_startup=true
 dependent_startup_wait_for=start:exited

-[program:dhcp6relay]
-command=/usr/sbin/dhcp6relay
-
+[program:isc-dhcpv4-relay-Vlan2000]
+command=/usr/sbin/dhcrelay -d -m discard -a %%h:%%p %%P --name-alias-map-file /tmp/port-name-alias-map.txt -id Vlan2000 -iu Vlan1000 -iu PortChannel01 -iu PortChannel02 -iu PortChannel03 -iu PortChannel04 192.0.0.3 192.0.0.4
 priority=3
 autostart=false
 autorestart=false
@ -64,8 +64,18 @@ dependent_startup=true
 dependent_startup_wait_for=start:exited


+[program:dhcp6relay]
+command=/usr/sbin/dhcp6relay
+priority=3
+autostart=false
+autorestart=false
+stdout_logfile=syslog
+stderr_logfile=syslog
+dependent_startup=true
+dependent_startup_wait_for=start:exited
+
 [group:dhcpmon]
-programs=dhcpmon-Vlan1000
+programs=dhcpmon-Vlan1000,dhcpmon-Vlan2000

 [program:dhcpmon-Vlan1000]
 command=/usr/sbin/dhcpmon -id Vlan1000 -iu Vlan2000 -iu PortChannel01 -iu PortChannel02 -iu PortChannel03 -iu PortChannel04 -im eth0
@ -75,6 +85,16 @@ autorestart=false
 stdout_logfile=syslog
 stderr_logfile=syslog
 dependent_startup=true
-dependent_startup_wait_for=isc-dhcpv4-relay-Vlan1000:running dhcp6relay:running
+dependent_startup_wait_for=isc-dhcpv4-relay-Vlan1000:running 
+
+[program:dhcpmon-Vlan2000]
+command=/usr/sbin/dhcpmon -id Vlan2000 -iu Vlan1000 -iu PortChannel01 -iu PortChannel02 -iu PortChannel03 -iu PortChannel04 -im eth0
+priority=4
+autostart=false
+autorestart=false
+stdout_logfile=syslog
+stderr_logfile=syslog
+dependent_startup=true
+dependent_startup_wait_for=isc-dhcpv4-relay-Vlan2000:running 


--- a/src/sonic-config-engine/tests/t0-sample-graph.xml
+++ b/src/sonic-config-engine/tests/t0-sample-graph.xml
@ -270,7 +270,8 @@
          <StaticDHCPRelay>0.0.0.0/0</StaticDHCPRelay>
          <FhrpProtoType i:nil="true"/>
          <Type i:nil="true"/>
-          <DhcpRelays></DhcpRelays>
+          <DhcpRelays>192.0.0.3;192.0.0.4</DhcpRelays>
+          <Dhcpv6Relays>fc02:2000::3;fc02:2000::4</Dhcpv6Relays>
          <VlanID>2000</VlanID>
          <Tag>2000</Tag>
          <Subnets>192.168.200.0/27</Subnets>
--- a/src/sonic-config-engine/tests/t0-sample-no-ip-helper-graph.xml
+++ b/src/sonic-config-engine/tests/t0-sample-no-ip-helper-graph.xml
@ -0,0 +1,938 @@
+<DeviceMiniGraph xmlns="Microsoft.Search.Autopilot.Evolution" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
+  <CpgDec>
+    <IsisRouters xmlns:a="http://schemas.datacontract.org/2004/07/Microsoft.Search.Autopilot.Evolution"/>
+    <PeeringSessions>
+       <BGPSession>
+         <StartRouter>switch-t0</StartRouter>
+         <StartPeer>10.1.0.32</StartPeer>
+         <EndRouter>BGPMonitor</EndRouter>
+         <EndPeer>10.20.30.40</EndPeer>
+         <Multihop>30</Multihop>
+         <HoldTime>10</HoldTime>
+         <KeepAliveTime>3</KeepAliveTime>
+      </BGPSession>
+      <BGPSession>
+        <MacSec>false</MacSec>
+        <StartRouter>switch-t0</StartRouter>
+        <StartPeer>10.0.0.56</StartPeer>
+        <EndRouter>ARISTA01T1</EndRouter>
+        <EndPeer>10.0.0.57</EndPeer>
+        <Multihop>1</Multihop>
+        <HoldTime>180</HoldTime>
+        <KeepAliveTime>60</KeepAliveTime>
+      </BGPSession>
+      <BGPSession>
+        <StartRouter>switch-t0</StartRouter>
+        <StartPeer>FC00::71</StartPeer>
+        <EndRouter>ARISTA01T1</EndRouter>
+        <EndPeer>FC00::72</EndPeer>
+        <Multihop>1</Multihop>
+        <HoldTime>180</HoldTime>
+        <KeepAliveTime>60</KeepAliveTime>
+      </BGPSession>
+      <BGPSession>
+        <MacSec>false</MacSec>
+        <StartRouter>switch-t0</StartRouter>
+        <StartPeer>10.0.0.58</StartPeer>
+        <EndRouter>ARISTA02T1</EndRouter>
+        <EndPeer>10.0.0.59</EndPeer>
+        <Multihop>1</Multihop>
+        <HoldTime>180</HoldTime>
+        <KeepAliveTime>60</KeepAliveTime>
+      </BGPSession>
+      <BGPSession>
+        <StartRouter>switch-t0</StartRouter>
+        <StartPeer>FC00::75</StartPeer>
+        <EndRouter>ARISTA02T1</EndRouter>
+        <EndPeer>FC00::76</EndPeer>
+        <Multihop>1</Multihop>
+        <HoldTime>180</HoldTime>
+        <KeepAliveTime>60</KeepAliveTime>
+      </BGPSession>
+      <BGPSession>
+        <MacSec>false</MacSec>
+        <StartRouter>switch-t0</StartRouter>
+        <StartPeer>10.0.0.60</StartPeer>
+        <EndRouter>ARISTA03T1</EndRouter>
+        <EndPeer>10.0.0.61</EndPeer>
+        <Multihop>1</Multihop>
+        <HoldTime>180</HoldTime>
+        <KeepAliveTime>60</KeepAliveTime>
+      </BGPSession>
+      <BGPSession>
+        <StartRouter>switch-t0</StartRouter>
+        <StartPeer>FC00::79</StartPeer>
+        <EndRouter>ARISTA03T1</EndRouter>
+        <EndPeer>FC00::7A</EndPeer>
+        <Multihop>1</Multihop>
+        <HoldTime>180</HoldTime>
+        <KeepAliveTime>60</KeepAliveTime>
+      </BGPSession>
+      <BGPSession>
+        <MacSec>false</MacSec>
+        <StartRouter>switch-t0</StartRouter>
+        <StartPeer>10.0.0.62</StartPeer>
+        <EndRouter>ARISTA04T1</EndRouter>
+        <EndPeer>10.0.0.63</EndPeer>
+        <Multihop>1</Multihop>
+        <HoldTime>180</HoldTime>
+        <KeepAliveTime>60</KeepAliveTime>
+      </BGPSession>
+      <BGPSession>
+        <StartRouter>switch-t0</StartRouter>
+        <StartPeer>FC00::7D</StartPeer>
+        <EndRouter>ARISTA04T1</EndRouter>
+        <EndPeer>FC00::7E</EndPeer>
+        <Multihop>1</Multihop>
+        <HoldTime>180</HoldTime>
+        <KeepAliveTime>60</KeepAliveTime>
+      </BGPSession>
+    </PeeringSessions>
+    <Routers xmlns:a="http://schemas.datacontract.org/2004/07/Microsoft.Search.Autopilot.Evolution">
+      <a:BGPRouterDeclaration>
+          <a:ASN>1</a:ASN>
+          <a:BgpGroups/>
+          <a:Hostname>BGPMonitor</a:Hostname>
+          <a:Peers>
+              <BGPPeer>
+                  <ElementType>BGPPeer</ElementType>
+                  <Address>10.1.0.32</Address>
+                  <RouteMapIn i:nil="true"/>
+                  <RouteMapOut i:nil="true"/>
+                  <Vrf i:nil="true"/>
+              </BGPPeer>
+          </a:Peers>
+          <a:RouteMaps/>
+      </a:BGPRouterDeclaration>
+      <a:BGPRouterDeclaration>
+        <a:ASN>65100</a:ASN>
+        <a:Hostname>switch-t0</a:Hostname>
+        <a:Peers>
+          <BGPPeer>
+            <Address>10.0.0.57</Address>
+            <RouteMapIn i:nil="true"/>
+            <RouteMapOut i:nil="true"/>
+            <Vrf i:nil="true"/>
+          </BGPPeer>
+          <BGPPeer>
+            <Address>10.0.0.59</Address>
+            <RouteMapIn i:nil="true"/>
+            <RouteMapOut i:nil="true"/>
+            <Vrf i:nil="true"/>
+          </BGPPeer>
+          <BGPPeer>
+            <Address>10.0.0.61</Address>
+            <RouteMapIn i:nil="true"/>
+            <RouteMapOut i:nil="true"/>
+            <Vrf i:nil="true"/>
+          </BGPPeer>
+          <BGPPeer>
+            <Address>10.0.0.63</Address>
+            <RouteMapIn i:nil="true"/>
+            <RouteMapOut i:nil="true"/>
+            <Vrf i:nil="true"/>
+          </BGPPeer>
+        </a:Peers>
+        <a:RouteMaps/>
+      </a:BGPRouterDeclaration>
+      <a:BGPRouterDeclaration>
+        <a:ASN>64600</a:ASN>
+        <a:Hostname>ARISTA01T1</a:Hostname>
+        <a:RouteMaps/>
+      </a:BGPRouterDeclaration>
+      <a:BGPRouterDeclaration>
+        <a:ASN>64600</a:ASN>
+        <a:Hostname>ARISTA02T1</a:Hostname>
+        <a:RouteMaps/>
+      </a:BGPRouterDeclaration>
+      <a:BGPRouterDeclaration>
+        <a:ASN>64600</a:ASN>
+        <a:Hostname>ARISTA03T1</a:Hostname>
+        <a:RouteMaps/>
+      </a:BGPRouterDeclaration>
+      <a:BGPRouterDeclaration>
+        <a:ASN>64600</a:ASN>
+        <a:Hostname>ARISTA04T1</a:Hostname>
+        <a:RouteMaps/>
+      </a:BGPRouterDeclaration>
+    </Routers>
+  </CpgDec>
+  <DpgDec>
+    <DeviceDataPlaneInfo>
+      <IPSecTunnels/>
+      <LoopbackIPInterfaces xmlns:a="http://schemas.datacontract.org/2004/07/Microsoft.Search.Autopilot.Evolution">
+        <a:LoopbackIPInterface>
+          <Name>HostIP</Name>
+          <AttachTo>Loopback0</AttachTo>
+          <a:Prefix xmlns:b="Microsoft.Search.Autopilot.Evolution">
+            <b:IPPrefix>10.1.0.32/32</b:IPPrefix>
+          </a:Prefix>
+          <a:PrefixStr>10.1.0.32/32</a:PrefixStr>
+        </a:LoopbackIPInterface>
+        <a:LoopbackIPInterface>
+          <Name>HostIP1</Name>
+          <AttachTo>Loopback0</AttachTo>
+          <a:Prefix xmlns:b="Microsoft.Search.Autopilot.Evolution">
+            <b:IPPrefix>FC00:1::32/128</b:IPPrefix>
+          </a:Prefix>
+          <a:PrefixStr>FC00:1::32/128</a:PrefixStr>
+        </a:LoopbackIPInterface>
+        <a:LoopbackIPInterface>
+          <Name>LoopbackIP1</Name>
+          <AttachTo>Loopback1</AttachTo>
+          <a:Prefix xmlns:b="Microsoft.Search.Autopilot.Evolution">
+            <b:IPPrefix>10.10.0.99/32</b:IPPrefix>
+          </a:Prefix>
+          <a:PrefixStr>10.10.0.99/32</a:PrefixStr>
+        </a:LoopbackIPInterface>
+        <a:LoopbackIPInterface>
+          <Name>LoopbackIP2</Name>
+          <AttachTo>Loopback2</AttachTo>
+          <a:Prefix xmlns:b="Microsoft.Search.Autopilot.Evolution">
+            <b:IPPrefix>10.21.0.64/32</b:IPPrefix>
+          </a:Prefix>
+          <a:PrefixStr>10.21.0.64/32</a:PrefixStr>
+        </a:LoopbackIPInterface>
+        <a:LoopbackIPInterface>
+          <Name>LoopbackIP3</Name>
+          <AttachTo>Loopback3</AttachTo>
+          <a:Prefix xmlns:b="Microsoft.Search.Autopilot.Evolution">
+            <b:IPPrefix>10.21.64.2/32</b:IPPrefix>
+          </a:Prefix>
+          <a:PrefixStr>10.21.64.2/32</a:PrefixStr>
+        </a:LoopbackIPInterface>
+       </LoopbackIPInterfaces>
+      <ManagementIPInterfaces xmlns:a="http://schemas.datacontract.org/2004/07/Microsoft.Search.Autopilot.Evolution">
+        <a:ManagementIPInterface>
+          <Name>HostIP</Name>
+          <AttachTo>eth0</AttachTo>
+          <a:Prefix xmlns:b="Microsoft.Search.Autopilot.Evolution">
+            <b:IPPrefix>10.0.0.100/24</b:IPPrefix>
+          </a:Prefix>
+          <a:PrefixStr>10.0.0.100/24</a:PrefixStr>
+        </a:ManagementIPInterface>
+        <a:ManagementIPInterface>
+          <Name>HostIP</Name>
+          <AttachTo>eth0</AttachTo>
+          <a:Prefix xmlns:b="Microsoft.Search.Autopilot.Evolution">
+            <b:IPPrefix>2603:10e2:0:2902::8/64</b:IPPrefix>
+          </a:Prefix>
+          <a:PrefixStr>2603:10e2:0:2902::8/64</a:PrefixStr>
+        </a:ManagementIPInterface>
+      </ManagementIPInterfaces>
+      <ManagementVIPInterfaces xmlns:a="http://schemas.datacontract.org/2004/07/Microsoft.Search.Autopilot.Evolution"/>
+      <MplsInterfaces/>
+      <MplsTeInterfaces/>
+      <RsvpInterfaces/>
+      <Hostname>switch-t0</Hostname>
+      <PortChannelInterfaces>
+        <PortChannel>
+          <Name>PortChannel01</Name>
+          <AttachTo>fortyGigE0/112</AttachTo>
+          <SubInterface/>
+        </PortChannel>
+        <PortChannel>
+          <Name>PortChannel02</Name>
+          <AttachTo>fortyGigE0/116</AttachTo>
+          <SubInterface/>
+        </PortChannel>
+        <PortChannel>
+          <Name>PortChannel03</Name>
+          <AttachTo>fortyGigE0/120</AttachTo>
+          <SubInterface/>
+        </PortChannel>
+        <PortChannel>
+          <Name>PortChannel04</Name>
+          <AttachTo>fortyGigE0/124</AttachTo>
+          <SubInterface/>
+        </PortChannel>
+      </PortChannelInterfaces>
+      <VlanInterfaces>
+        <VlanInterface>
+          <Name>Vlan1000</Name>
+          <AttachTo>fortyGigE0/4;fortyGigE0/8;fortyGigE0/12;fortyGigE0/16;fortyGigE0/20;fortyGigE0/24;fortyGigE0/28;fortyGigE0/32;fortyGigE0/36;fortyGigE0/40;fortyGigE0/44;fortyGigE0/48;fortyGigE0/52;fortyGigE0/56;fortyGigE0/60;fortyGigE0/64;fortyGigE0/68;fortyGigE0/72;fortyGigE0/76;fortyGigE0/80;fortyGigE0/84;fortyGigE0/88;fortyGigE0/92;fortyGigE0/96</AttachTo>
+          <NoDhcpRelay>False</NoDhcpRelay>
+          <StaticDHCPRelay>0.0.0.0/0</StaticDHCPRelay>
+          <FhrpProtoType i:nil="true"/>
+          <Type i:nil="true"/>
+          <DhcpRelays>192.0.0.1;192.0.0.2</DhcpRelays>
+          <Dhcpv6Relays>fc02:2000::1;fc02:2000::2</Dhcpv6Relays>
+          <VlanID>1000</VlanID>
+          <Tag>1000</Tag>
+          <Subnets>192.168.0.0/27</Subnets>
+          <MacAddress i:nil="true"/>
+          <SecondarySubnets/>
+        </VlanInterface>
+        <VlanInterface>
+          <Name>Vlan2000</Name>
+          <AttachTo>fortyGigE0/112;fortyGigE0/116;fortyGigE0/120</AttachTo>
+          <NoDhcpRelay>False</NoDhcpRelay>
+          <StaticDHCPRelay>0.0.0.0/0</StaticDHCPRelay>
+          <FhrpProtoType i:nil="true"/>
+          <Type i:nil="true"/>
+          <DhcpRelays></DhcpRelays>
+          <Dhcpv6Relays></Dhcpv6Relays>
+          <VlanID>2000</VlanID>
+          <Tag>2000</Tag>
+          <Subnets>192.168.200.0/27</Subnets>
+          <MacAddress i:nil="true"/>
+          <SecondarySubnets/>
+        </VlanInterface>
+        <VlanInterface>
+          <Name>Vlan99</Name>
+          <AttachTo>fortyGigE0/100</AttachTo>
+          <NoDhcpRelay>False</NoDhcpRelay>
+          <StaticDHCPRelay>0.0.0.0/0</StaticDHCPRelay>
+          <FhrpProtoType i:nil="true"/>
+          <Type>UserDefinedL2Vlan</Type>
+          <DhcpRelays>192.0.0.1;192.0.0.2</DhcpRelays>
+          <VlanID>99</VlanID>
+          <Tag>99</Tag>
+          <Subnets/>
+          <MacAddress i:nil="true"/>
+          <SecondarySubnets/>
+        </VlanInterface>
+        <VlanInterface>
+          <Name>Vlan98</Name>
+          <AttachTo>fortyGigE0/100;PortChannel01;PortChannel03</AttachTo>
+          <NoDhcpRelay>False</NoDhcpRelay>
+          <StaticDHCPRelay>0.0.0.0/0</StaticDHCPRelay>
+          <FhrpProtoType i:nil="true"/>
+          <Type>UserDefinedL2Vlan</Type>
+          <DhcpRelays>192.0.0.1;192.0.0.2</DhcpRelays>
+          <VlanID>98</VlanID>
+          <Tag>98</Tag>
+          <Subnets/>
+          <MacAddress i:nil="true"/>
+          <SecondarySubnets/>
+        </VlanInterface>
+      </VlanInterfaces>
+      <IPInterfaces>
+        <IPInterface>
+          <Name i:nil="true"/>
+          <AttachTo>PortChannel01</AttachTo>
+          <Prefix>10.0.0.56/31</Prefix>
+        </IPInterface>
+        <IPInterface>
+          <Name i:Name="true"/>
+          <AttachTo>PortChannel01</AttachTo>
+          <Prefix>FC00::71/126</Prefix>
+        </IPInterface>
+        <IPInterface>
+          <Name i:nil="true"/>
+          <AttachTo>PortChannel02</AttachTo>
+          <Prefix>10.0.0.58/31</Prefix>
+        </IPInterface>
+        <IPInterface>
+          <Name i:Name="true"/>
+          <AttachTo>PortChannel02</AttachTo>
+          <Prefix>FC00::75/126</Prefix>
+        </IPInterface>
+        <IPInterface>
+          <Name i:nil="true"/>
+          <AttachTo>PortChannel03</AttachTo>
+          <Prefix>10.0.0.60/31</Prefix>
+        </IPInterface>
+        <IPInterface>
+          <Name i:Name="true"/>
+          <AttachTo>PortChannel03</AttachTo>
+          <Prefix>FC00::79/126</Prefix>
+        </IPInterface>
+        <IPInterface>
+          <Name i:nil="true"/>
+          <AttachTo>PortChannel04</AttachTo>
+          <Prefix>10.0.0.62/31</Prefix>
+        </IPInterface>
+        <IPInterface>
+          <Name i:Name="true"/>
+          <AttachTo>PortChannel04</AttachTo>
+          <Prefix>FC00::7D/126</Prefix>
+        </IPInterface>
+        <IPInterface>
+          <Name i:nil="true"/>
+          <AttachTo>Vlan1000</AttachTo>
+          <Prefix>192.168.0.1/27</Prefix>
+        </IPInterface>
+        <IPInterface>
+          <Name i:nil="true"/>
+          <AttachTo>Vlan2000</AttachTo>
+          <Prefix>192.168.200.1/27</Prefix>
+        </IPInterface>
+      </IPInterfaces>
+      <DataAcls/>
+      <AclInterfaces>
+        <AclInterface>
+          <AttachTo>ERSPAN</AttachTo>
+          <InAcl>everflow</InAcl>
+          <Type>Everflow</Type>
+        </AclInterface>
+        <AclInterface>
+          <AttachTo>ERSPANv6</AttachTo>
+          <InAcl>everflowV6</InAcl>
+          <Type>Everflow</Type>
+        </AclInterface>
+	<AclInterface>
+          <AttachTo>EGRESS_ERSPAN</AttachTo>
+	  <OutAcl>everflow_egress</OutAcl>
+	  <Type>Everflow</Type>
+        </AclInterface>
+        <AclInterface>
+          <AttachTo>PortChannel01;PortChannel02;PortChannel03;PortChannel04</AttachTo>
+          <InAcl>DataAclIngress</InAcl>
+          <Type>DataPlane</Type>
+        </AclInterface>
+        <AclInterface>
+          <AttachTo>PortChannel01;PortChannel02;Vlan98</AttachTo>
+          <OutAcl>DataAclEgress</OutAcl>
+          <Type>DataPlane</Type>
+        </AclInterface>
+        <AclInterface>
+          <AttachTo>SNMP</AttachTo>
+          <InAcl>SNMP_ACL</InAcl>
+          <Type>SNMP</Type>
+        </AclInterface>
+        <AclInterface>
+          <AttachTo>NTP</AttachTo>
+          <InAcl>NTP_ACL</InAcl>
+          <Type>NTP</Type>
+        </AclInterface>
+        <AclInterface>
+          <AttachTo>SSH</AttachTo>
+          <InAcl>SSH_ACL</InAcl>
+          <Type>SSH</Type>
+        </AclInterface>
+        <AclInterface>
+          <AttachTo>SSH</AttachTo>
+          <InAcl>ROUTER-PROTECT</InAcl>
+          <Type>SSH</Type>
+        </AclInterface>
+        <AclInterface>
+          <AttachTo>SNMP</AttachTo>
+          <InAcl>ROUTER-PROTECT</InAcl>
+          <Type>SNMP</Type>
+        </AclInterface>
+        <AclInterface>
+          <AttachTo>NTP</AttachTo>
+          <InAcl>NTP_ACL</InAcl>
+        </AclInterface>
+      </AclInterfaces>
+      <DownstreamSummaries/>
+      <DownstreamSummarySet xmlns:a="http://schemas.datacontract.org/2004/07/Microsoft.Search.Autopilot.Evolution"/>
+    </DeviceDataPlaneInfo>
+  </DpgDec>
+  <PngDec>
+    <DeviceInterfaceLinks>
+      <DeviceLinkBase>
+        <ElementType>DeviceInterfaceLink</ElementType>
+        <EndDevice>ARISTA01T1</EndDevice>
+        <EndPort>Ethernet1/1</EndPort>
+        <StartDevice>switch-t0</StartDevice>
+        <StartPort>fortyGigE0/112</StartPort>
+      </DeviceLinkBase>
+      <DeviceLinkBase>
+        <ElementType>DeviceInterfaceLink</ElementType>
+        <EndDevice>ARISTA02T1</EndDevice>
+        <EndPort>Ethernet1/1</EndPort>
+        <StartDevice>switch-t0</StartDevice>
+        <StartPort>fortyGigE0/116</StartPort>
+      </DeviceLinkBase>
+      <DeviceLinkBase>
+        <ElementType>DeviceInterfaceLink</ElementType>
+        <EndDevice>ARISTA03T1</EndDevice>
+        <EndPort>Ethernet1/1</EndPort>
+        <StartDevice>switch-t0</StartDevice>
+        <StartPort>fortyGigE0/120</StartPort>
+      </DeviceLinkBase>
+      <DeviceLinkBase>
+        <ElementType>DeviceInterfaceLink</ElementType>
+        <EndDevice>ARISTA04T1</EndDevice>
+        <EndPort>Ethernet1/1</EndPort>
+        <StartDevice>switch-t0</StartDevice>
+        <StartPort>fortyGigE0/124</StartPort>
+        <Bandwidth>100000</Bandwidth>
+      </DeviceLinkBase>
+      <DeviceLinkBase>
+        <ElementType>DeviceInterfaceLink</ElementType>
+        <Bandwidth>100000</Bandwidth>
+        <EndDevice>switch-t0</EndDevice>
+        <EndPort>fortyGigE0/4</EndPort>
+        <FlowControl>true</FlowControl>
+        <StartDevice>ARISTA05T1</StartDevice>
+        <StartPort>Ethernet1/33</StartPort>
+        <Validate>true</Validate>
+      </DeviceLinkBase>
+      <DeviceLinkBase>
+        <ElementType>DeviceInterfaceLink</ElementType>
+        <EndDevice>Servers0</EndDevice>
+        <EndPort>eth0</EndPort>
+        <StartDevice>switch-t0</StartDevice>
+        <StartPort>fortyGigE0/4</StartPort>
+      </DeviceLinkBase>
+      <DeviceLinkBase>
+        <ElementType>DeviceInterfaceLink</ElementType>
+        <EndDevice>Servers100</EndDevice>
+        <EndPort>eth0</EndPort>
+        <StartDevice>switch-t0</StartDevice>
+        <StartPort>fortyGigE0/100</StartPort>
+      </DeviceLinkBase>
+    </DeviceInterfaceLinks>
+    <Devices>
+      <Device i:type="ToRRouter">
+        <Hostname>switch-t0</Hostname>
+        <HwSku>Force10-S6000</HwSku>
+      </Device>
+      <Device i:type="LeafRouter">
+        <Hostname>ARISTA01T1</Hostname>
+        <HwSku>Arista</HwSku>
+      </Device>
+      <Device i:type="LeafRouter">
+        <Hostname>ARISTA02T1</Hostname>
+        <HwSku>Arista</HwSku>
+      </Device>
+      <Device i:type="LeafRouter">
+        <Hostname>ARISTA03T1</Hostname>
+        <HwSku>Arista</HwSku>
+      </Device>
+      <Device i:type="LeafRouter">
+        <Hostname>ARISTA04T1</Hostname>
+        <HwSku>Arista</HwSku>
+      </Device>
+    </Devices>
+  </PngDec>
+  <DeviceInfos>
+    <DeviceInfo>
+      <EthernetInterfaces xmlns:a="http://schemas.datacontract.org/2004/07/Microsoft.Search.Autopilot.Evolution">
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet0</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet8</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet12</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet16</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet20</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet24</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet28</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet32</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet36</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet40</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet44</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet48</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet52</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet56</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet60</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet64</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet68</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet72</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet76</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet80</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet84</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet88</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet92</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet96</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet100</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet104</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet108</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet112</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet116</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+        <a:EthernetInterface>
+          <ElementType>DeviceInterface</ElementType>
+          <AlternateSpeeds i:nil="true"/>
+          <EnableFlowControl>true</EnableFlowControl>
+          <Index>1</Index>
+          <InterfaceName>Ethernet120</InterfaceName>
+          <InterfaceType i:nil="true"/>
+          <MultiPortsInterface>false</MultiPortsInterface>
+          <PortName>0</PortName>
+          <Priority>0</Priority>
+          <Speed>40000</Speed>
+        </a:EthernetInterface>
+      </EthernetInterfaces>
+      <HwSku>Force10-S6000</HwSku>
+      <ManagementInterfaces/>
+    </DeviceInfo>
+  </DeviceInfos>
+  <MetadataDeclaration>
+    <Devices xmlns:a="http://schemas.datacontract.org/2004/07/Microsoft.Search.Autopilot.Evolution">
+      <a:DeviceMetadata>
+        <a:Name>switch-t0</a:Name>
+        <a:Properties>
+          <a:DeviceProperty>
+            <a:Name>ErspanDestinationIpv4</a:Name>
+            <a:Reference i:nil="true"/>
+            <a:Value>2.2.2.2</a:Value>
+          </a:DeviceProperty>
+        </a:Properties>
+      </a:DeviceMetadata>
+    </Devices>
+    <Properties xmlns:a="http://schemas.datacontract.org/2004/07/Microsoft.Search.Autopilot.Evolution"/>
+  </MetadataDeclaration>
+  <LinkMetadataDeclaration>
+    <Link xmlns:a="http://schemas.datacontract.org/2004/07/Microsoft.Search.Autopilot.Evolution">
+      <a:LinkMetadata>
+        <a:Name i:nil="true"/>
+        <a:Properties>
+          <a:DeviceProperty>
+            <a:Name>AutoNegotiation</a:Name>
+            <a:Reference i:nil="true"/>
+            <a:Value>True</a:Value>
+          </a:DeviceProperty>
+          <a:DeviceProperty>
+            <a:Name>FECDisabled</a:Name>
+            <a:Reference i:nil="true"/>
+            <a:Value>True</a:Value>
+          </a:DeviceProperty>
+        </a:Properties>
+        <a:Key>ARISTA05T1:Ethernet1/33;switch-t0:fortyGigE0/4</a:Key>
+      </a:LinkMetadata>
+      <a:LinkMetadata>
+        <a:Name i:nil="true"/>
+        <a:Properties>
+          <a:DeviceProperty>
+            <a:Name>AutoNegotiation</a:Name>
+            <a:Reference i:nil="true"/>
+            <a:Value>False</a:Value>
+          </a:DeviceProperty>
+          <a:DeviceProperty>
+            <a:Name>FECDisabled</a:Name>
+            <a:Reference i:nil="true"/>
+            <a:Value>True</a:Value>
+          </a:DeviceProperty>
+        </a:Properties>
+        <a:Key>ARISTA06T1:Ethernet1/34;switch-t0:fortyGigE0/8</a:Key>
+      </a:LinkMetadata>
+    </Link>
+  </LinkMetadataDeclaration>
+<MetadataDeclaration>
+ <Devices xmlns:a="http://schemas.datacontract.org/2004/07/Microsoft.Search.Autopilot.Evolution">
+  <a:DeviceMetadata>
+   <a:Name>switch-t0</a:Name>
+   <a:Properties>
+    <a:DeviceProperty>
+     <a:Name>DeploymentId</a:Name>
+     <a:Reference i:nil="true"/>
+     <a:Value>1</a:Value>
+    </a:DeviceProperty>
+  </a:Properties>
+  </a:DeviceMetadata>
+ </Devices>
+ <Properties xmlns:a="http://schemas.datacontract.org/2004/07/Microsoft.Search.Autopilot.Evolution"/>
+</MetadataDeclaration>
+  <Hostname>switch-t0</Hostname>
+  <HwSku>Force10-S6000</HwSku>
+</DeviceMiniGraph>
--- a/src/sonic-config-engine/tests/test_j2files.py
+++ b/src/sonic-config-engine/tests/test_j2files.py
@ -24,6 +24,7 @@ class TestJ2Files(TestCase):
        self.multi_asic_minigraph = os.path.join(self.test_dir, 'multi_npu_data', 'sample-minigraph.xml')
        self.multi_asic_port_config = os.path.join(self.test_dir, 'multi_npu_data', 'sample_port_config-0.ini')
        self.radv_test_minigraph = os.path.join(self.test_dir, 'radv-test-sample-graph.xml')
+        self.no_ip_helper_minigraph = os.path.join(self.test_dir, 't0-sample-no-ip-helper-graph.xml')
        self.output_file = os.path.join(self.test_dir, 'output')
        os.environ["CFGGEN_UNIT_TESTING"] = "2"

@ -107,6 +108,12 @@ class TestJ2Files(TestCase):
        self.run_script(argument)
        self.assertTrue(utils.cmp(os.path.join(self.test_dir, 'sample_output', utils.PYvX_DIR, 'docker-dhcp-relay.supervisord.conf'), self.output_file))

+        # Test generation of docker-dhcp-relay.supervisord.conf when a vlan is missing ip/ipv6 helpers
+        template_path = os.path.join(self.test_dir, '..', '..', '..', 'dockers', 'docker-dhcp-relay', 'docker-dhcp-relay.supervisord.conf.j2')
+        argument = '-m ' + self.no_ip_helper_minigraph + ' -p ' + self.t0_port_config + ' -t ' + template_path + ' > ' + self.output_file
+        self.run_script(argument)
+        self.assertTrue(utils.cmp(os.path.join(self.test_dir, 'sample_output', utils.PYvX_DIR, 'docker-dhcp-relay-no-ip-helper.supervisord.conf'), self.output_file))
+
    def test_radv(self):
        # Test generation of radvd.conf with multiple ipv6 prefixes
        template_path = os.path.join(self.test_dir, '..', '..', '..', 'dockers', 'docker-router-advertiser', 'radvd.conf.j2')