[dts][PATCH V1] test_plans/dual_vlan: optimize the test steps in the test plan

[Weiyuan Li]

modify the test plan need to set prot stop first when set the tx_vlan.

Signed-off-by: Weiyuan Li <weiyuanx.li at intel.com>
---
 test_plans/dual_vlan_test_plan.rst | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/test_plans/dual_vlan_test_plan.rst b/test_plans/dual_vlan_test_plan.rst
index fd953cd9..11dfa332 100644
--- a/test_plans/dual_vlan_test_plan.rst
+++ b/test_plans/dual_vlan_test_plan.rst
@@ -242,7 +242,9 @@ Enable vlan packet forwarding on port ``0`` first::
 
 Insert VLAN Tag Identifier ``1`` on port ``1``::
 
+    testpmd> port stop all
     testpmd> tx_vlan set 1 1
+    testpmd> port start all
 
 Configure the traffic generator to send VLAN packet without VLAN Tag Identifier
 and send 1 packet on port ``A``. Verify that the packet can been received on port
@@ -250,7 +252,9 @@ and send 1 packet on port ``A``. Verify that the packet can been received on por
 
 Delete the VLAN Tag Identifier ``1`` on port ``1``::
 
+    testpmd> port stop all
     testpmd> tx_vlan reset 1
+    testpmd> port start all
 
 Configure the traffic generator to send VLAN packet without VLAN Tag Identifier
 and send 1 packet on port ``A``. Verify that the packet can been received on port
-- 
2.25.1