diff --git a/src/sonic-config-engine/tests/t0-sample-graph-everflow.xml b/src/sonic-config-engine/tests/t0-sample-graph-everflow.xml
deleted file mode 100644
index 6a078b48cf..0000000000
--- a/src/sonic-config-engine/tests/t0-sample-graph-everflow.xml
+++ /dev/null
@@ -1,321 +0,0 @@
-<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>
-        <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>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>
-      </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>
-      </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>
-          <Type i:nil="true"/>
-          <DhcpRelays>192.0.0.1;192.0.0.2</DhcpRelays>
-          <VlanID>1000</VlanID>
-          <Tag>1000</Tag>
-          <Subnets>192.168.0.0/27</Subnets>
-        </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>
-      </IPInterfaces>
-      <DataAcls/>
-      <AclInterfaces>
-        <AclInterface>
-          <AttachTo>ERSPAN</AttachTo>
-          <InAcl>everflow</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>
-      </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>
-  <Hostname>switch-t0</Hostname>
-  <HwSku>Force10-S6000</HwSku>
-</DeviceMiniGraph>