diff --git a/tempest/api/network/admin/test_l3_agent_scheduler.py b/tempest/api/network/admin/test_l3_agent_scheduler.py
index ad121b0..cf0b5e3 100644
--- a/tempest/api/network/admin/test_l3_agent_scheduler.py
+++ b/tempest/api/network/admin/test_l3_agent_scheduler.py
@@ -18,8 +18,16 @@
 from tempest import exceptions
 from tempest import test
 
+AGENT_TYPE = 'L3 agent'
+AGENT_MODES = (
+    'legacy',
+    'dvr_snat'
+)
+
 
 class L3AgentSchedulerTestJSON(base.BaseAdminNetworkTest):
+    _agent_mode = 'legacy'
+
     """
     Tests the following operations in the Neutron API using the REST client for
     Neutron:
@@ -46,12 +54,17 @@
         body = cls.admin_client.list_agents()
         agents = body['agents']
         for agent in agents:
-            if agent['agent_type'] == 'L3 agent':
+            # TODO(armax): falling back on default _agent_mode can be
+            # dropped as soon as Icehouse is dropped.
+            agent_mode = (
+                agent['configurations'].get('agent_mode', cls._agent_mode))
+            if agent['agent_type'] == AGENT_TYPE and agent_mode in AGENT_MODES:
                 cls.agent = agent
                 break
         else:
             msg = "L3 Agent Scheduler enabled in conf, but L3 Agent not found"
             raise exceptions.InvalidConfiguration(msg)
+        cls.router = cls.create_router(data_utils.rand_name('router'))
 
     @test.attr(type='smoke')
     @test.idempotent_id('b7ce6e89-e837-4ded-9b78-9ed3c9c6a45a')
@@ -62,22 +75,18 @@
     @test.idempotent_id('9464e5e7-8625-49c3-8fd1-89c52be59d66')
     def test_add_list_remove_router_on_l3_agent(self):
         l3_agent_ids = list()
-        name = data_utils.rand_name('router1-')
-        router = self.client.create_router(name)
-        self.addCleanup(self.client.delete_router, router['router']['id'])
         self.admin_client.add_router_to_l3_agent(
             self.agent['id'],
-            router['router']['id'])
-        body = self.admin_client.list_l3_agents_hosting_router(
-            router['router']['id'])
+            self.router['id'])
+        body = (
+            self.admin_client.list_l3_agents_hosting_router(self.router['id']))
         for agent in body['agents']:
             l3_agent_ids.append(agent['id'])
             self.assertIn('agent_type', agent)
             self.assertEqual('L3 agent', agent['agent_type'])
         self.assertIn(self.agent['id'], l3_agent_ids)
-        del l3_agent_ids[:]
         body = self.admin_client.remove_router_from_l3_agent(
             self.agent['id'],
-            router['router']['id'])
+            self.router['id'])
         # NOTE(afazekas): The deletion not asserted, because neutron
         # is not forbidden to reschedule the router to the same agent