diff --git a/ansible/roles/test/tasks/snmp.yml b/ansible/roles/test/tasks/snmp.yml
index a84a9ddd58f..b3734dfb507 100644
--- a/ansible/roles/test/tasks/snmp.yml
+++ b/ansible/roles/test/tasks/snmp.yml
@@ -1,3 +1,8 @@
+# When uptime is less than the boot time of snmp, to pause the task until snmp service is up.
+- name: Wait for snmp service start
+  pause: seconds={{210 - ansible_uptime_seconds}}
+  when: ansible_uptime_seconds < 210
+
 # Gather facts with SNMP version 2
 - name: Gathering basic snmp facts about the device
   snmp_facts: host={{ ansible_host }} version=v2c community={{ snmp_rocommunity }}
@@ -32,4 +37,4 @@
       include_tasks: roles/test/tasks/snmp/psu.yml
   when:
    - testcase_name is defined
-   - (hostvars[ansible_hostname]['type'] is not defined) or (hostvars[ansible_hostname]['type'] != 'simx')
\ No newline at end of file
+   - (hostvars[ansible_hostname]['type'] is not defined) or (hostvars[ansible_hostname]['type'] != 'simx')
diff --git a/tests/conftest.py b/tests/conftest.py
index 9e4d2d030af..2ab54444683 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -60,11 +60,18 @@ def __init__(self, testbed_file):
                 del line['topo']
                 line['topo'] = defaultdict()
                 line['topo']['name'] = topo
+                line['topo']['type'] = self.get_testbed_type(line['topo']['name'])
                 with open("../ansible/vars/topo_{}.yml".format(topo), 'r') as fh:
                     line['topo']['properties'] = yaml.safe_load(fh)
 
                 self.testbed_topo[line['conf-name']] = line
 
+    def get_testbed_type(self, topo_name):
+        pattern = re.compile(r'^(t0|t1|ptf)')
+        match = pattern.match(topo_name)
+        if match == None:
+            raise Exception("Unsupported testbed type - {}".format(topo_name))
+        return match.group()
 
 def pytest_addoption(parser):
     parser.addoption("--testbed", action="store", default=None, help="testbed name")
diff --git a/tests/snmp/test_snmp_lldp.py b/tests/snmp/test_snmp_lldp.py
index b8847d919d4..86fbd85cfc0 100644
--- a/tests/snmp/test_snmp_lldp.py
+++ b/tests/snmp/test_snmp_lldp.py
@@ -1,6 +1,11 @@
 import pytest
 from ansible_host import AnsibleHost
 
+@pytest.fixture(scope="module", autouse=True)
+def setup_check_topo(testbed):
+    if testbed['topo']['type'] == 'ptf':
+        pytest.skip('Unsupported topology')
+
 @pytest.mark.bsl
 def test_snmp_lldp(ansible_adhoc, testbed, creds):
     """