+
+OPENFLOW_UNDERLAY_TOPOLOGY_3 = '''
+<topology
+ xmlns="urn:TBD:params:xml:ns:yang:network-topology"
+ xmlns:inventory="urn:opendaylight:inventory"
+ xmlns:inventory-topo="urn:opendaylight:model:topology:inventory"
+ xmlns:igp="urn:TBD:params:xml:ns:yang:nt:l3-unicast-igp-topology">
+ <topology-id>openflow-topo:3</topology-id>
+ <node>
+ <node-id>of-node:11</node-id>
+ <inventory-topo:inventory-node-ref>/inventory:nodes/inventory:node[inventory:id="openflow:11"]</inventory-topo:inventory-node-ref>
+ </node>
+ <node>
+ <node-id>of-node:12</node-id>
+ <inventory-topo:inventory-node-ref>/inventory:nodes/inventory:node[inventory:id="openflow:12"]</inventory-topo:inventory-node-ref>
+ </node>
+ <node>
+ <node-id>of-node:13</node-id>
+ <inventory-topo:inventory-node-ref>/inventory:nodes/inventory:node[inventory:id="openflow:13"]</inventory-topo:inventory-node-ref>
+ </node>
+ <node>
+ <node-id>of-node:14</node-id>
+ <inventory-topo:inventory-node-ref>/inventory:nodes/inventory:node[inventory:id="openflow:14"]</inventory-topo:inventory-node-ref>
+ </node>
+ <node>
+ <node-id>of-node:15</node-id>
+ <inventory-topo:inventory-node-ref>/inventory:nodes/inventory:node[inventory:id="openflow:15"]</inventory-topo:inventory-node-ref>
+ </node>
+ <link>
+ <link-id>link:11:12</link-id>
+ <source>
+ <source-node>of-node:11</source-node>
+ </source>
+ <destination>
+ <dest-node>of-node:12</dest-node>
+ </destination>
+ <igp:igp-link-attributes>
+ <igp:name>linkB</igp:name>
+ <igp:metric>16</igp:metric>
+ </igp:igp-link-attributes>
+ </link>
+ <link>
+ <link-id>link:14:12</link-id>
+ <source>
+ <source-node>of-node:14</source-node>
+ </source>
+ <destination>
+ <dest-node>of-node:12</dest-node>
+ </destination>
+ <igp:igp-link-attributes>
+ <igp:name>linkC</igp:name>
+ <igp:metric>14</igp:metric>
+ </igp:igp-link-attributes>
+ </link>
+ <link>
+ <link-id>link:15:13</link-id>
+ <source>
+ <source-node>of-node:15</source-node>
+ </source>
+ <destination>
+ <dest-node>of-node:13</dest-node>
+ </destination>
+ <igp:igp-link-attributes>
+ <igp:name>linkD</igp:name>
+ <igp:metric>15</igp:metric>
+ </igp:igp-link-attributes>
+ </link>
+ <link>
+ <link-id>link:11:13</link-id>
+ <source>
+ <source-node>of-node:11</source-node>
+ </source>
+ <destination>
+ <dest-node>of-node:13</dest-node>
+ </destination>
+ <igp:igp-link-attributes>
+ <igp:name>linkA</igp:name>
+ <igp:metric>13</igp:metric>
+ </igp:igp-link-attributes>
+ </link>
+</topology>
+'''
+OPENFLOW_UNDERLAY_TOPOLOGY_4 = '''
+<topology
+ xmlns="urn:TBD:params:xml:ns:yang:network-topology"
+ xmlns:inventory="urn:opendaylight:inventory"
+ xmlns:inventory-topo="urn:opendaylight:model:topology:inventory">
+ <topology-id>openflow-topo:4</topology-id>
+ <node>
+ <node-id>of-node:16</node-id>
+ <inventory-topo:inventory-node-ref>/inventory:nodes/inventory:node[inventory:id="openflow:16"]</inventory-topo:inventory-node-ref>
+ </node>
+ <node>
+ <node-id>of-node:17</node-id>
+ <inventory-topo:inventory-node-ref>/inventory:nodes/inventory:node[inventory:id="openflow:17"]</inventory-topo:inventory-node-ref>
+ </node>
+ <node>
+ <node-id>of-node:18</node-id>
+ <inventory-topo:inventory-node-ref>/inventory:nodes/inventory:node[inventory:id="openflow:18"]</inventory-topo:inventory-node-ref>
+ </node>
+ <node>
+ <node-id>of-node:19</node-id>
+ <inventory-topo:inventory-node-ref>/inventory:nodes/inventory:node[inventory:id="openflow:19"]</inventory-topo:inventory-node-ref>
+ </node>
+ <node>
+ <node-id>of-node:20</node-id>
+ <inventory-topo:inventory-node-ref>/inventory:nodes/inventory:node[inventory:id="openflow:20"]</inventory-topo:inventory-node-ref>
+ </node>
+</topology>
+'''
+
+OPENFLOW_UNDERLAY_TOPOLOGY_5 = '''
+<topology
+ xmlns="urn:TBD:params:xml:ns:yang:network-topology"
+ xmlns:inventory="urn:opendaylight:inventory"
+ xmlns:inventory-topo="urn:opendaylight:model:topology:inventory">
+ <topology-id>openflow-topo:5</topology-id>
+ <node>
+ <node-id>of-node:21</node-id>
+ <inventory-topo:inventory-node-ref>/inventory:nodes/inventory:node[inventory:id="openflow:21"]</inventory-topo:inventory-node-ref>
+ <termination-point>
+ <tp-id>tp:1</tp-id>
+ <inventory-topo:inventory-node-connector-ref>
+ /inventory:nodes/inventory:node[inventory:id="openflow:21"]/inventory:node-connector[inventory:id="openflow:21:1"]
+ </inventory-topo:inventory-node-connector-ref>
+ </termination-point>
+ </node>
+ <node>
+ <node-id>of-node:22</node-id>
+ <inventory-topo:inventory-node-ref>/inventory:nodes/inventory:node[inventory:id="openflow:22"]</inventory-topo:inventory-node-ref>
+ <termination-point>
+ <tp-id>tp:1</tp-id>
+ <inventory-topo:inventory-node-connector-ref>
+ /inventory:nodes/inventory:node[inventory:id="openflow:22"]/inventory:node-connector[inventory:id="openflow:22:1"]
+ </inventory-topo:inventory-node-connector-ref>
+ </termination-point>
+ <termination-point>
+ <tp-id>tp:2</tp-id>
+ <inventory-topo:inventory-node-connector-ref>
+ /inventory:nodes/inventory:node[inventory:id="openflow:22"]/inventory:node-connector[inventory:id="openflow:22:2"]
+ </inventory-topo:inventory-node-connector-ref>
+ </termination-point>
+ <termination-point>
+ <tp-id>tp:3</tp-id>
+ <inventory-topo:inventory-node-connector-ref>
+ /inventory:nodes/inventory:node[inventory:id="openflow:22"]/inventory:node-connector[inventory:id="openflow:22:3"]
+ </inventory-topo:inventory-node-connector-ref>
+ </termination-point>
+ </node>
+ <node>
+ <node-id>of-node:23</node-id>
+ <inventory-topo:inventory-node-ref>/inventory:nodes/inventory:node[inventory:id="openflow:23"]</inventory-topo:inventory-node-ref>
+ </node>
+ <node>
+ <node-id>of-node:24</node-id>
+ <inventory-topo:inventory-node-ref>/inventory:nodes/inventory:node[inventory:id="openflow:24"]</inventory-topo:inventory-node-ref>
+ </node>
+ <node>
+ <node-id>of-node:25</node-id>
+ <inventory-topo:inventory-node-ref>/inventory:nodes/inventory:node[inventory:id="openflow:25"]</inventory-topo:inventory-node-ref>
+ <termination-point>
+ <tp-id>tp:1</tp-id>
+ <inventory-topo:inventory-node-connector-ref>
+ /inventory:nodes/inventory:node[inventory:id="openflow:25"]/inventory:node-connector[inventory:id="openflow:25:1"]
+ </inventory-topo:inventory-node-connector-ref>
+ </termination-point>
+ </node>
+</topology>
+'''
+
+OPENFLOW_UNDERLAY_TOPOLOGY_6 = '''
+<topology
+ xmlns="urn:TBD:params:xml:ns:yang:network-topology"
+ xmlns:inventory="urn:opendaylight:inventory"
+ xmlns:inventory-topo="urn:opendaylight:model:topology:inventory">
+ <topology-id>openflow-topo:6</topology-id>
+ <node>
+ <node-id>of-node:26</node-id>
+ <inventory-topo:inventory-node-ref>/inventory:nodes/inventory:node[inventory:id="openflow:6"]</inventory-topo:inventory-node-ref>
+ </node>
+ <node>
+ <node-id>of-node:27</node-id>
+ <inventory-topo:inventory-node-ref>/inventory:nodes/inventory:node[inventory:id="openflow:7"]</inventory-topo:inventory-node-ref>
+ </node>
+ <node>
+ <node-id>of-node:28</node-id>
+ <inventory-topo:inventory-node-ref>/inventory:nodes/inventory:node[inventory:id="openflow:8"]</inventory-topo:inventory-node-ref>
+ </node>
+ <node>
+ <node-id>of-node:29</node-id>
+ <inventory-topo:inventory-node-ref>/inventory:nodes/inventory:node[inventory:id="openflow:9"]</inventory-topo:inventory-node-ref>
+ </node>
+ <node>
+ <node-id>of-node:30</node-id>
+ <inventory-topo:inventory-node-ref>/inventory:nodes/inventory:node[inventory:id="openflow:10"]</inventory-topo:inventory-node-ref>
+ </node>
+</topology>
+'''