diff --git a/libraries/utils.robot b/libraries/utils.robot
index 2bfe322..dad5fc9 100755
--- a/libraries/utils.robot
+++ b/libraries/utils.robot
@@ -217,9 +217,9 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         Continue For Loop If    "${olt_serial_number}"!="${src['olt']}"
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         # Check ONU port is Enabled in ONOS
         Wait Until Keyword Succeeds   120s   2s
         ...    Verify UNI Port Is Enabled   ${ONOS_SSH_IP}    ${ONOS_SSH_PORT}    ${src['onu']}    ${src['uni_id']}
@@ -324,9 +324,9 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         Continue For Loop If    "${olt_serial_number}"!="${src['olt']}"
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         # Check ONU port is Enabled in ONOS
         Wait Until Keyword Succeeds   120s   2s
         ...    Verify UNI Port Is Enabled   ${ONOS_SSH_IP}    ${ONOS_SSH_PORT}    ${src['onu']}    ${src['uni_id']}
@@ -381,9 +381,9 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         Continue For Loop If    "${olt_serial_number}"!="${src['olt']}"
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         # Check ONU port is Enabled in ONOS
         Wait Until Keyword Succeeds   120s   2s
         ...    Verify UNI Port Is Enabled   ${ONOS_SSH_IP}    ${ONOS_SSH_PORT}    ${src['onu']}    ${src['uni_id']}
@@ -543,9 +543,9 @@
     ${of_id}=    Wait Until Keyword Succeeds    ${timeout}    15s    Validate OLT Device in ONOS    ${src['olt']}
     Set Global Variable    ${of_id}
     ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
-    ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
     ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
     ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}    ${src['uni_id']}
+    ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
     # Check ONU port is Enabled in ONOS
     Wait Until Keyword Succeeds    ${timeout}    2s
     ...    Verify UNI Port Is Enabled   ${ONOS_SSH_IP}    ${ONOS_SSH_PORT}    ${src['onu']}    ${src['uni_id']}
@@ -646,9 +646,9 @@
     ${of_id}=    Wait Until Keyword Succeeds    ${timeout}    15s    Validate OLT Device in ONOS    ${src['olt']}
     Set Global Variable    ${of_id}
     ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
-    ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
     ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
     ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}    ${src['uni_id']}
+    ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
     # Check ONU port is Enabled in ONOS
     Wait Until Keyword Succeeds    ${timeout}    2s
     ...    Verify UNI Port Is Enabled   ${ONOS_SSH_IP}    ${ONOS_SSH_PORT}    ${src['onu']}    ${src['uni_id']}
@@ -783,9 +783,9 @@
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         Continue For Loop If    "${olt_serial_number}"!="${src['olt']}"
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${valid_onu_states}=    Create List    stopping-openomci    omci-flows-deleted
         Run Keyword And Continue On Failure    Wait Until Keyword Succeeds    ${timeout}    5s
         ...    Validate Device    ENABLED    DISCOVERED
@@ -926,10 +926,10 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         Continue For Loop If    "${olt_sn}"!="${src['olt']}"
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${of_id}=    Wait Until Keyword Succeeds    ${timeout}    15s    Validate OLT Device in ONOS    ${src['olt']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${matched}=    Match ONU in PON OLT Peer List    ${olt_peer_list}    ${onu_device_id}
         Run Keyword If    ${matched}
         ...    Run Keywords
@@ -964,11 +964,11 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         Continue For Loop If    "${olt_sn}"!="${src['olt']}"
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${of_id}=    Wait Until Keyword Succeeds    ${timeout}    15s    Validate OLT Device in ONOS    ${src['olt']}
         ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${matched}=    Match ONU in PON OLT Peer List    ${olt_peer_list}    ${onu_device_id}
         ${wpa_log}=    Run Keyword If    ${has_dataplane} and ${matched}    Catenate    SEPARATOR=.
         ...    /tmp/wpa    ${src['dp_iface_name']}    log
@@ -1062,10 +1062,10 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         Continue For Loop If    "${olt_sn}"!="${src['olt']}"
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${of_id}=    Wait Until Keyword Succeeds    ${timeout}    15s    Validate OLT Device in ONOS    ${src['olt']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${matched}=    Match ONU in PON OLT Peer List    ${olt_peer_list}    ${onu_device_id}
         ${valid_onu_states}=    Create List    stopping-openomci    omci-flows-deleted
         Run Keyword If    ${matched}
@@ -1103,11 +1103,11 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         Continue For Loop If    "${olt_sn}"!="${src['olt']}"
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${of_id}=    Wait Until Keyword Succeeds    ${timeout}    15s    Validate OLT Device in ONOS    ${src['olt']}
         ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${matched}=    Match ONU in PON OLT Peer List    ${olt_peer_list}    ${onu_device_id}
         Run Keyword If    ${matched}
         ...    Run Keywords
@@ -1795,9 +1795,9 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         Continue For Loop If    "${olt_serial_number}"!="${src['olt']}"
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         # Check ONU port is Enabled in ONOS
         Wait Until Keyword Succeeds   120s   2s
         ...    Verify UNI Port Is Enabled   ${ONOS_SSH_IP}    ${ONOS_SSH_PORT}    ${src['onu']}    ${src['uni_id']}
diff --git a/tests/dt-workflow/Voltha_DT_FailureScenarios.robot b/tests/dt-workflow/Voltha_DT_FailureScenarios.robot
index 54d15aa..c25f6ed 100755
--- a/tests/dt-workflow/Voltha_DT_FailureScenarios.robot
+++ b/tests/dt-workflow/Voltha_DT_FailureScenarios.robot
@@ -88,9 +88,9 @@
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
         ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         # If the power switch port is not specified, continue
         Continue For Loop If    '${src["power_switch_port"]}' == '${None}'
         # Disable Power Switch
@@ -258,9 +258,9 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         Wait Until Keyword Succeeds    ${timeout}    5s
         ...    Validate Device        ENABLED    ACTIVE    REACHABLE
         ...    ${onu_device_id}    onu=True    onu_reason=initial-mib-downloaded    by_dev_id=True
@@ -350,9 +350,9 @@
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
         ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         # Verify ONU state in voltha
         Run Keyword And Continue On Failure    Wait Until Keyword Succeeds    ${timeout}    5s    Validate Device
         ...    ENABLED    ACTIVE    REACHABLE
@@ -403,9 +403,9 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         # Bring up the device and verify it authenticates
         Wait Until Keyword Succeeds    360s    5s    Validate Device    ENABLED    ACTIVE    REACHABLE
         ...    ${onu_device_id}    onu=True    onu_reason=initial-mib-downloaded    by_dev_id=True
@@ -518,9 +518,9 @@
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
         ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         Reboot Device    ${onu_device_id}
         Run Keyword If    ${has_dataplane}    Run Keyword And Continue On Failure
         ...    Wait Until Keyword Succeeds    ${timeout}    2s
@@ -771,9 +771,9 @@
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
         ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         # Remove Subscriber Access
         Wait Until Keyword Succeeds    ${timeout}    2s    Execute ONOS CLI Command use single connection    ${ONOS_SSH_IP}
         ...    ${ONOS_SSH_PORT}    volt-remove-subscriber-access ${of_id} ${onu_port}
diff --git a/tests/dt-workflow/Voltha_DT_PODTests.robot b/tests/dt-workflow/Voltha_DT_PODTests.robot
index eab2145..4636a08 100755
--- a/tests/dt-workflow/Voltha_DT_PODTests.robot
+++ b/tests/dt-workflow/Voltha_DT_PODTests.robot
@@ -222,9 +222,9 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         Disable Device    ${onu_device_id}
         Run Keyword And Continue On Failure    Wait Until Keyword Succeeds    ${timeout}    5s
         ...    Validate Device    DISABLED    UNKNOWN
@@ -332,9 +332,9 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         Wait Until Keyword Succeeds   ${timeout}    2s
         ...    Verify UNI Port Is Disabled   ${ONOS_SSH_IP}    ${ONOS_SSH_PORT}    ${src['onu']}    ${src['uni_id']}
         Run Keyword If    ${has_dataplane}    Run Keyword And Continue On Failure
@@ -672,9 +672,9 @@
     ${dst}=    Set Variable    ${hosts.dst[${0}]}
     ${of_id}=    Get ofID From OLT List    ${src['olt']}
     ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
-    ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
     ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
     ...    ${of_id}    ${src['uni_id']}
+    ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
     ${subscriber_id}=    Set Variable    ${of_id}/${onu_port}
     ${oldBwName}    Get Bandwidth Profile Name For Given Subscriber    ${subscriber_id}    upstreamBandwidthProfile
     # Delete the existing subscriber
@@ -788,10 +788,10 @@
     FOR    ${I}    IN RANGE    0    ${num_all_onus}
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
         # Remove Subscriber
         Execute ONOS CLI Command use single connection    ${ONOS_SSH_IP}    ${ONOS_SSH_PORT}
diff --git a/tests/functional/Voltha_FailureScenarios.robot b/tests/functional/Voltha_FailureScenarios.robot
index 9d34280..6901d4d 100755
--- a/tests/functional/Voltha_FailureScenarios.robot
+++ b/tests/functional/Voltha_FailureScenarios.robot
@@ -87,9 +87,9 @@
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
         ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         # If the power switch port is not specified, continue
         Continue For Loop If    '${src["power_switch_port"]}' == '${None}'
         Disable Switch Outlet    ${src['power_switch_port']}
@@ -246,9 +246,9 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Verify Eapol Flows Added For ONU    ${ONOS_SSH_IP}    ${ONOS_SSH_PORT}    ${of_id}    ${onu_port}
         ...    ${src['c_tag']}
@@ -290,9 +290,9 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
 
         # Bring up the device and verify it authenticates
         Wait Until Keyword Succeeds    360s    5s    Validate Device        ENABLED    ACTIVE    REACHABLE
@@ -385,9 +385,9 @@
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
         ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         # Verify ONU state in voltha
         Run Keyword And Continue On Failure    Wait Until Keyword Succeeds    360s    5s    Validate Device
         ...    ENABLED    ACTIVE    REACHABLE
@@ -534,9 +534,9 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         # Bring up the device and verify it authenticates
         Wait Until Keyword Succeeds    360s    5s    Validate Device    ENABLED    ACTIVE    REACHABLE
         ...    ${onu_device_id}    onu=True    onu_reason=omci-flows-pushed    by_dev_id=True
@@ -668,9 +668,9 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         # Bring up the device and verify it authenticates
         Wait Until Keyword Succeeds    ${timeout}    5s    Validate Device        ENABLED    ACTIVE    REACHABLE
         ...    ${onu_device_id}    onu=True    onu_reason=omci-flows-pushed    by_dev_id=True
@@ -700,9 +700,9 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         # Add subscriber access and verify that DHCP completes to ensure system is still functioning properly
         Wait Until Keyword Succeeds    ${timeout}    2s    Execute ONOS CLI Command use single connection    ${ONOS_SSH_IP}
         ...    ${ONOS_SSH_PORT}    volt-add-subscriber-access ${of_id} ${onu_port}
@@ -756,9 +756,9 @@
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
         ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         Reboot Device    ${onu_device_id}
         Run Keyword If    ${has_dataplane}    Run Keyword And Continue On Failure
         ...    Wait Until Keyword Succeeds    ${timeout}    2s
diff --git a/tests/functional/Voltha_PODTests.robot b/tests/functional/Voltha_PODTests.robot
index 1f9ade4..c484a48 100755
--- a/tests/functional/Voltha_PODTests.robot
+++ b/tests/functional/Voltha_PODTests.robot
@@ -107,9 +107,9 @@
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
         ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         Disable Device    ${onu_device_id}
         Wait Until Keyword Succeeds    20s    2s    Test Devices Disabled in VOLTHA    Id=${onu_device_id}
         Run Keyword If    ${has_dataplane}    Run Keyword And Continue On Failure
@@ -150,9 +150,9 @@
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
         ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         Wait Until Keyword Succeeds    ${timeout}    2s    Execute ONOS CLI Command use single connection    ${ONOS_SSH_IP}
         ...    ${ONOS_SSH_PORT}    volt-remove-subscriber-access ${of_id} ${onu_port}
         Wait Until Keyword Succeeds    ${timeout}    2s
@@ -190,9 +190,9 @@
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
         ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         Run Keyword And Ignore Error    Login And Run Command On Remote System    killall dhclient    ${src['ip']}
         ...    ${src['user']}    ${src['pass']}    ${src['container_type']}    ${src['container_name']}
         Run Keyword And Ignore Error    Login And Run Command On Remote System    ps -ef | grep dhclient    ${src['ip']}
@@ -245,9 +245,9 @@
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
         ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         Wait Until Keyword Succeeds   120s   2s
         ...    Verify UNI Port Is Enabled   ${ONOS_SSH_IP}    ${ONOS_SSH_PORT}    ${src['onu']}    ${src['uni_id']}
         Disable Device    ${onu_device_id}
@@ -309,10 +309,10 @@
     FOR    ${I}    IN RANGE    0    ${num_all_onus}
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         Wait Until Keyword Succeeds    ${timeout}    5s    Validate Device    ENABLED    DISCOVERED
         ...    UNREACHABLE    ${src['onu']}    onu=false
         #Verify that ping fails
@@ -373,7 +373,6 @@
     FOR    ${I}    IN RANGE    0    ${num_all_onus}
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}    ${src['uni_id']}
         Disable Device    ${onu_device_id}
@@ -486,9 +485,9 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         Disable Device    ${onu_device_id}
         Wait Until Keyword Succeeds    ${timeout}    5s    Validate Device    DISABLED    UNKNOWN
         ...    REACHABLE    ${src['onu']}    onu=false
@@ -820,11 +819,11 @@
     FOR    ${I}    IN RANGE    0    ${num_all_onus}
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
         ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         # Remove Subscriber Access (To replicate ATT workflow)
         Execute ONOS CLI Command use single connection    ${ONOS_SSH_IP}    ${ONOS_SSH_PORT}
         ...    volt-remove-subscriber-access ${of_id} ${onu_port}
diff --git a/tests/tt-workflow/Voltha_TT_FailureScenarios.robot b/tests/tt-workflow/Voltha_TT_FailureScenarios.robot
index 73857dc..976a75c 100755
--- a/tests/tt-workflow/Voltha_TT_FailureScenarios.robot
+++ b/tests/tt-workflow/Voltha_TT_FailureScenarios.robot
@@ -93,9 +93,9 @@
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${service_type}=    Get Variable Value    ${src['service_type']}    "null"
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         # If the power switch port is not specified, continue
         Continue For Loop If    '${src["power_switch_port"]}' == '${None}'
         # Disable Power Switch
@@ -211,9 +211,9 @@
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${service_type}=    Get Variable Value    ${src['service_type']}    "null"
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         Reboot Device    ${onu_device_id}
         # TODO: Add verification for MCAST
         Run Keyword If    ${has_dataplane} and '${service_type}' != 'mcast'    Run Keyword And Continue On Failure
@@ -374,9 +374,9 @@
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${service_type}=    Get Variable Value    ${src['service_type']}    "null"
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         # Verify ONU state in voltha
         Run Keyword And Continue On Failure    Wait Until Keyword Succeeds    ${timeout}    5s    Validate Device
         ...    ENABLED    ACTIVE    REACHABLE
diff --git a/tests/tt-workflow/Voltha_TT_PODTests.robot b/tests/tt-workflow/Voltha_TT_PODTests.robot
index 4d57cb9..b720586 100755
--- a/tests/tt-workflow/Voltha_TT_PODTests.robot
+++ b/tests/tt-workflow/Voltha_TT_PODTests.robot
@@ -195,9 +195,9 @@
         ${dst}=    Set Variable    ${hosts.dst[${I}]}
         ${service_type}=    Get Variable Value    ${src['service_type']}    "null"
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}    ${src['uni_id']}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         # Remove Subscriber Access
         ${del_sub_cmd}=    Run Keyword If    ${unitag_sub}
         ...    Catenate    volt-remove-subscriber-unitag --tpId ${src['tp_id']} --sTag ${src['s_tag']}
@@ -258,9 +258,9 @@
         Continue For Loop If    -1 != ${onu_id}
         Append To List    ${onu_list}    ${sn}
         ${of_id}=    Get ofID From OLT List    ${src['olt']}
-        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         ${onu_port}=    Get Onu Ports in ONOS For ALL UNI per ONU    ${src['onu']}    ${of_id}
         Log    ${onu_port}
+        ${onu_device_id}=    Get Device ID From SN    ${src['onu']}
         Disable Device    ${onu_device_id}
         Run Keyword And Continue On Failure    Wait Until Keyword Succeeds    ${timeout}    5s
         ...    Validate Device    DISABLED    UNKNOWN