+UNIFICATION_NT = '''<topology xmlns="urn:opendaylight:topology:correlation" xmlns:n="urn:TBD:params:xml:ns:yang:network-topology">
+ <n:topology-id>unif:1</n:topology-id>
+ <correlations>
+ <output-model>network-topology-model</output-model>
+ <correlation>
+ <correlation-id>1</correlation-id>
+ <type>aggregation-only</type>
+ <correlation-item>node</correlation-item>
+ <aggregation>
+ <aggregation-type>unification</aggregation-type>
+ <mapping>
+ <input-model>network-topology-model</input-model>
+ <underlay-topology>und-topo:1</underlay-topology>
+ <target-field>network-topology-pcep:path-computation-client/network-topology-pcep:ip-address</target-field>
+ <aggregate-inside>false</aggregate-inside>
+ </mapping>
+ <mapping>
+ <input-model>network-topology-model</input-model>
+ <underlay-topology>und-topo:2</underlay-topology>
+ <target-field>network-topology-pcep:path-computation-client/network-topology-pcep:ip-address</target-field>
+ <aggregate-inside>false</aggregate-inside>
+ </mapping>
+ </aggregation>
+ </correlation>
+ </correlations>
+ </topology>'''
+
+UNDERLAY_TOPOLOGY_1 = '''<topology
+ xmlns="urn:TBD:params:xml:ns:yang:network-topology"
+ xmlns:pcep="urn:opendaylight:params:xml:ns:yang:topology:pcep">
+ <topology-id>und-topo:1</topology-id>
+ <topology-types>
+ <pcep:topology-pcep></pcep:topology-pcep>
+ </topology-types>
+ <node>
+ <node-id>pcep:1</node-id>
+ <pcep:path-computation-client>
+ <pcep:ip-address>192.168.1.1</pcep:ip-address>
+ </pcep:path-computation-client>
+ </node>
+ <node>
+ <node-id>pcep:2</node-id>
+ <pcep:path-computation-client>
+ <pcep:ip-address>192.168.1.2</pcep:ip-address>
+ </pcep:path-computation-client>
+ </node>
+ <node>
+ <node-id>pcep:3</node-id>
+ <pcep:path-computation-client>
+ <pcep:ip-address>192.168.2.1</pcep:ip-address>
+ </pcep:path-computation-client>
+ </node>
+ <node>
+ <node-id>pcep:4</node-id>
+ <pcep:path-computation-client>
+ <pcep:ip-address>192.168.2.2</pcep:ip-address>
+ </pcep:path-computation-client>
+ </node>
+ <node>
+ <node-id>pcep:5</node-id>
+ <pcep:path-computation-client>
+ <pcep:ip-address>192.168.2.3</pcep:ip-address>
+ </pcep:path-computation-client>
+ </node>
+ </topology>'''
+
+UNDERLAY_TOPOLOGY_2 = '''<topology
+ xmlns="urn:TBD:params:xml:ns:yang:network-topology"
+ xmlns:pcep="urn:opendaylight:params:xml:ns:yang:topology:pcep">
+ <topology-id>und-topo:2</topology-id>
+ <topology-types>
+ <pcep:topology-pcep></pcep:topology-pcep>
+ </topology-types>
+ <node>
+ <node-id>pcep:6</node-id>
+ <pcep:path-computation-client>
+ <pcep:ip-address>192.168.1.3</pcep:ip-address>
+ </pcep:path-computation-client>
+ </node>
+ <node>
+ <node-id>pcep:7</node-id>
+ <pcep:path-computation-client>
+ <pcep:ip-address>192.168.1.4</pcep:ip-address>
+ </pcep:path-computation-client>
+ </node>
+ <node>
+ <node-id>pcep:8</node-id>
+ <pcep:path-computation-client>
+ <pcep:ip-address>192.168.2.4</pcep:ip-address>
+ </pcep:path-computation-client>
+ </node>
+ <node>
+ <node-id>pcep:9</node-id>
+ <pcep:path-computation-client>
+ <pcep:ip-address>192.168.2.5</pcep:ip-address>
+ </pcep:path-computation-client>
+ </node>
+ <node>
+ <node-id>pcep:10</node-id>
+ <pcep:path-computation-client>
+ <pcep:ip-address>192.168.2.3</pcep:ip-address>
+ </pcep:path-computation-client>
+ </node>
+ </topology>'''