diff --git a/environments/neutron-l2gw-opendaylight.yaml b/environments/neutron-l2gw-opendaylight.yaml
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+# A Heat environment file that can be used to deploy Neutron L2 Gateway service
+#
+# Currently there are only two service provider for Neutron L2 Gateway
+# This file enables L2GW service with OpenDaylight as driver.
+#
+# - OpenDaylight: L2GW:OpenDaylight:networking_odl.l2gateway.driver.OpenDaylightL2gwDriver:default
+resource_registry:
+  OS::TripleO::Services::NeutronL2gwApi: ../puppet/services/neutron-l2gw-api.yaml
+
+parameter_defaults:
+  NeutronServicePlugins: "networking_l2gw.services.l2gateway.plugin.L2GatewayPlugin"
+  L2gwServiceProvider: ['L2GW:OpenDaylight:networking_odl.l2gateway.driver.OpenDaylightL2gwDriver:default']
+
+  # Optional
+  # L2gwServiceDefaultInterfaceName: "FortyGigE1/0/1"
+  # L2gwServiceDefaultDeviceName: "Switch1"
+  # L2gwServiceQuotaL2Gateway: 10
+  # L2gwServicePeriodicMonitoringInterval: 5