--- /dev/null
+RPC_SEND_BARRIER_DATA = '''<input xmlns="urn:opendaylight:flow:transaction">
+ <node xmlns:inv="urn:opendaylight:inventory">/inv:nodes/inv:node[inv:id="openflow:1"]</node>
+</input>'''
+
+RPC_SEND_ECHO_DATA = '''<input xmlns="urn:opendaylight:echo:service">
+ <node xmlns:inv="urn:opendaylight:inventory">/inv:nodes/inv:node[inv:id="openflow:1"]</node>
+ <data>aGVsbG8gYmFzZSA2NC4gaW5wdXQ=</data>
+</input>'''
+
+RPC_SEND_UPDATE_TABLE_DATA = '''<input xmlns="urn:opendaylight:table:service">
+ <node xmlns:inv="urn:opendaylight:inventory">/inv:nodes/inv:node[inv:id="openflow:1"]</node>
+ <updated-table>
+ <table-features> <!-- model opendaylight-table-types, grouping table-features -->
+ <table-id>0</table-id>
+ <name>table 0 - dummy name</name>
+ <metadata-match>21</metadata-match>
+ <metadata-write>22</metadata-write>
+ <max-entries>55</max-entries>
+ <config>DEPRECATED-MASK</config>
+ </table-features>
+ </updated-table>
+</input>'''