## M16 - Spirent - Verify 802.1ad (QinQ) Downstream

### Test Objective

* Purpose of this test is to verify OLT (DNX) can strip SVID from the incoming packets and forward only with CVID to ONU 

### Test Configuration
* Test Setup as shown in Section – 7
* Maple OLT and ONU is activated using VOLTHA
* Provision HSIA/unicast service on the OLT and connected ONU from VOLTHA

### Test Procedure
* On Spirent, configure double tagged traffic in downstream direction (1025,1025)
* On the receiving port, capture traffic and verify the VLAN parameters 

### Pass/Fail Criteria
* Downstream:
  *   configure on the Spirent side to send traffic with 1025,1025
  *   OLT will strip the 1025 and send traffic to corresponding ONT ( i.e. 1025 to ONT)
  *   Captured frame should contain only one VLAN tag (1025 VLAN)
