text: params = {
      "trafficItems": [
          {
  	    "name": "Port1 to Port2",
              "enabled": True,
              "bidirectional": True,
  	    "trackBy": ["flowGroup0"],
  	    "endpoints": {
  		"srcPort": ["192.168.70.11", "1", "1"],
  		"dstPort": ["192.168.70.11", "2", "1"]
  	    },
  	    "configElement": {
  		"transmissionType": "fixedPacketCount",
  		"frameCount": 2000000,
  		"frameRate": 100,
  		"frameRateType": "percentLineRate",
  		"frameSize": 64,
  		"stack": {
  		    "mac": {
  			"src": {"start": "00:0c:29:aa:86:e0", "step": "00:00:00:00:00:01", "direction": "increment", "count": 1},
  			"dst": {"start": "00:0c:29:84:37:16", "step": "00:00:00:00:00:01", "direction": "increment", "count": 1}
  		    },
  		    "mpls": [
  			{"start": 16, "step": 1, "direction": "increment", "count": 2},
  			{"start": 18, "step": 1, "direction": "increment", "count": 2}
  		    ],
  		    "ipv4": {
  			"src": {"start": "1.1.1.1", "step": "0.0.0.1", "direction": "increment", "count": 2},
  			"dst": {"start": "1.1.1.2", "step": "0.0.0.1", "direction": "increment", "count": 2}
  		    }
  		}
  	    }
  	},
          {
  	    "name": "Port3 to Port4",
              "enabled": True,
              "bidirectional": True,
  	    "trackBy": ["flowGroup0"],
  	    "endpoints": {
  		"srcEndpoint": ["192.168.70.11", "1", "1"],
  		"dstEndpoint": ["192.168.70.11", "2", "1"]
  	    },
  	    "configElement": {
  		"transmissionType": "fixedPacketCount",
  		"frameCount": 2000000,
  		"frameRate": 100,
  		"frameRateType": "percentLineRate",
  		"frameSize": 64,
  		"stack": {
  		    "mac": {
  			"src": {"start": "00:0c:29:aa:86:e0", "step": "00:00:00:00:00:01", "direction": "increment", "count": 1},
  			"dst": {"start": "00:0c:29:84:37:16", "step": "00:00:00:00:00:01", "direction": "increment", "count": 1}
  		    },
  		    "mpls": [
  			{"start": 20, "step": 1, "direction": "increment", "count": 2},
  			{"start": 22, "step": 1, "direction": "increment", "count": 2}
  		    ],
  		    "ipv4": {
  			"src": {"start": "1.1.1.1", "step": "0.0.0.1", "direction": "increment", "count": 2},
  			"dst": {"start": "1.1.1.2", "step": "0.0.0.1", "direction": "increment", "count": 2}
  		    }
  		}
  	    }
  	}
      ]
  }
  