diff --git a/tests/functional/Voltha_FailureScenarios.robot b/tests/functional/Voltha_FailureScenarios.robot
index df92503..5e0bc6f 100755
--- a/tests/functional/Voltha_FailureScenarios.robot
+++ b/tests/functional/Voltha_FailureScenarios.robot
@@ -86,6 +86,7 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${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}=    Run Keyword And Continue On Failure    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}    ${src['uni_id']}
@@ -327,6 +328,7 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${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_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}    ${src['uni_id']}
         # Add subscriber access and verify that DHCP completes to ensure system is still functioning properly
@@ -376,6 +378,7 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${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}=    Run Keyword And Continue On Failure    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}    ${src['uni_id']}
@@ -461,6 +464,7 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${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}=    Run Keyword And Continue On Failure    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}    ${src['uni_id']}
@@ -517,9 +521,7 @@
         ${olt_device_id}=    Get OLTDeviceID From OLT List    ${olt_serial_number}
         ${of_id}=    Wait Until Keyword Succeeds    ${timeout}    15s    Validate OLT Device in ONOS
         ...    ${olt_serial_number}
-        ${nni_port}=    Run Keyword And Continue On Failure    Wait Until Keyword Succeeds    ${timeout}    2s
-        ...    Get NNI Port in ONOS    ${of_id}
-       # Set Global Variable    ${nni_port}
+        ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
     END
     FOR    ${I}    IN RANGE    0    ${num_all_onus}
         ${src}=    Set Variable    ${hosts.src[${I}]}
@@ -572,6 +574,7 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${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_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
         ...    ${of_id}    ${src['uni_id']}
         # Add subscriber access and verify that DHCP completes to ensure system is still functioning properly
@@ -741,6 +744,7 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${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}=    Run Keyword And Continue On Failure    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Get ONU Port in ONOS    ${src['onu']}    ${of_id}
diff --git a/tests/functional/Voltha_MultiOLT_Tests.robot b/tests/functional/Voltha_MultiOLT_Tests.robot
index f16beb2..767b5f7 100755
--- a/tests/functional/Voltha_MultiOLT_Tests.robot
+++ b/tests/functional/Voltha_MultiOLT_Tests.robot
@@ -113,9 +113,7 @@
         ${of_id}=    Wait Until Keyword Succeeds    ${timeout}    15s    Validate OLT Device in ONOS
         ...    ${olt_serial_number}
         Set Global Variable    ${of_id}
-        ${nni_port}=    Run Keyword And Continue On Failure    Wait Until Keyword Succeeds    ${timeout}    2s
-        ...    Get NNI Port in ONOS    ${of_id}
-        Set Global Variable    ${nni_port}
+        ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
         ${suppressaddsubscriber}=    Set Variable If    '${J}'=='0'    False    True
         Perform Sanity Test Per OLT    ${of_id}    ${nni_port}    ${olt_serial_number}   ${onu_count}
         ...    ${suppressaddsubscriber}
@@ -184,9 +182,7 @@
         ${of_id}=    Wait Until Keyword Succeeds    ${timeout}    15s    Validate OLT Device in ONOS
         ...    ${olt_serial_number}
         Set Global Variable    ${of_id}
-        ${nni_port}=    Run Keyword And Continue On Failure    Wait Until Keyword Succeeds    ${timeout}    2s
-        ...    Get NNI Port in ONOS    ${of_id}
-        Set Global Variable    ${nni_port}
+        ${nni_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
         ${suppressaddsubscriber}=    Set Variable If    '${J}'=='0'    False    True
         Perform Sanity Test Per OLT    ${of_id}    ${nni_port}    ${olt_serial_number}   ${onu_count}
         ...    ${suppressaddsubscriber}
diff --git a/tests/functional/Voltha_ONOSHATests.robot b/tests/functional/Voltha_ONOSHATests.robot
old mode 100644
new mode 100755
index 5924981..4922a73
--- a/tests/functional/Voltha_ONOSHATests.robot
+++ b/tests/functional/Voltha_ONOSHATests.robot
@@ -100,9 +100,7 @@
         ${of_id}=    Wait Until Keyword Succeeds    ${timeout}    15s    Validate OLT Device in ONOS
         ...    ${olt_serial_number}
         Set Global Variable    ${of_id}
-        ${nni_port}=    Run Keyword And Continue On Failure    Wait Until Keyword Succeeds    ${timeout}    2s
-        ...    Get NNI Port in ONOS    ${of_id}
-        Set Global Variable    ${nni_port}
+        ${nni_port}=     Wait Until Keyword Succeeds    ${timeout}    2s    Get NNI Port in ONOS    ${of_id}
         ${num_onus}=    Set Variable    ${list_olts}[${I}][onucount]
         Run Keyword If   '${workflow}' == 'ATT'    Wait Until Keyword Succeeds    ${timeout}    2s
         ...    Perform Sanity Test Per OLT    ${of_id}    ${nni_port}    ${olt_serial_number}    ${num_onus}
diff --git a/tests/functional/Voltha_PODTests.robot b/tests/functional/Voltha_PODTests.robot
index 11f47a1..7269034 100755
--- a/tests/functional/Voltha_PODTests.robot
+++ b/tests/functional/Voltha_PODTests.robot
@@ -110,6 +110,7 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${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']}
@@ -145,6 +146,7 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${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']}
@@ -184,6 +186,7 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${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']}
@@ -237,6 +240,7 @@
         ${src}=    Set Variable    ${hosts.src[${I}]}
         ${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']}
@@ -709,6 +713,7 @@
     ${src}=    Set Variable    ${hosts.src[${0}]}
     ${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_port}=    Wait Until Keyword Succeeds    ${timeout}    2s    Get ONU Port in ONOS    ${src['onu']}
     ...    ${of_id}    ${src['uni_id']}
     ${subscriber_id}=    Set Variable    ${of_id}/${onu_port}