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+#Steps to test VOLTHA using CORD-TESTER with PONSIM ONU & OLT
+
+## Install CORD-TESTER
+```
+~$ git clone https://github.com/opencord/cord-tester.git
+~$ cd cord-tester
+~$ cd /cord-tester/src/test/setup/
+~$ sudo bash prerequisites.sh
+~$ sudo ./cord-test.py build all
+```
+## Install VOLTHA, following this link:
+```
+   https://github.com/opencord/voltha/blob/master/BUILD.md
+```
+
+## Get into setup directory of cord tester,
+```
+   $cord-tester/src/test/setup/
+```
+## Please make sure of VOLTHA location in manifest-ponsim.json
+```
+   For e.g "voltha_loc" : "/home/ubuntu/cord/incubator/voltha"
+```
+## Run following command to clean up previous installs:
+```
+   sudo ./cord-test.py cleanup -m manifest-ponsim.json
+```
+## Run following command to setup the testing stage with ponsim OLT & ONU:
+   ***This makes a setup of cord-test container (cord-tester1) and hooks up pon interface to UNI port of PONSIM ONU.***
+```
+   sudo ./cord-test.py setup -m manifest-ponsim.json
+```
+## Now run following command to provision the OLT & ONU and run cord subscriber test.
+```
+   sudo ./cord-test.py run -m manifest-ponsim.json -t cordSubscriber:subscriber_exchange.test_cord_subscriber_voltha
+```
+   * This will start the cord tester to run cord subscriber test
+      * CORD Subcriber emulation with AAA TLS & IGMP subscriber channel surfing test for you.
+        Have a look for steps followed to test in output log of test run.
+      * AAA TLS test will validate exchange of multiple messages of eap, hello, certificates, verify data
+        between cord tester TLS client and Radius Server with a validation of flows installed
+        in OLT & ONU
+      * IGMP test will surf channels joining a group and validating the multicast traffic received on it
+        with the flows installed
+
+## Now you can manually also validate on voltha cli for confirmation:
+```
+ ~$(voltha)devices
+ ~$(voltha)device <OLT deviceid>
+ ~$(device OLT deviceid)flows  <--- for ONU
+ ~$(device OLT deviceid)ports  <--- For NNI & PON Ports
+
+ ~$(voltha)device <ONU deviceid>
+ ~$(device ONU deviceid)flows  <--- for ONU
+ ~$(device ONU deviceid)ports  <--- for UNI & PON Ports
+```