diff --git a/test_plans/multiprocess_iavf_test_plan.rst b/test_plans/multiprocess_iavf_test_plan.rst
index 2f5ae54a..f28f2042 100644
--- a/test_plans/multiprocess_iavf_test_plan.rst
+++ b/test_plans/multiprocess_iavf_test_plan.rst
@@ -47,6 +47,9 @@ twice - once as a primary instance, and once as a secondary instance. Messages
 are sent from primary to secondary and vice versa, demonstrating the processes
 are sharing memory and can communicate using rte_ring structures.
 
+In DPDK multprocess, all operations done by the secondary process on the hardware are invalid
+So action `port stop` and `port reset` only work in primary process.
+
 Prerequisites
 -------------
 
@@ -54,9 +57,11 @@ If using vfio the kernel must be >= 3.6+ and VT-d must be enabled in bios.When
 using vfio, use the following commands to load the vfio driver and bind it
 to the device under test::
 
+   echo 1 > /sys/bus/pci/devices/0000:17:00.0/sriov_numvfs
+   ip link set ens9 vf0 mac 00:11:22:33:44:55
    modprobe vfio
    modprobe vfio-pci
-   usertools/dpdk-devbind.py --bind=vfio-pci device_bus_id
+   usertools/dpdk-devbind.py --bind=vfio-pci {vf_pci}
 
 Assuming that a DPDK build has been set up and the multi-process sample
 applications have been built.
@@ -948,3 +953,138 @@ Test Case: test_multiprocess_negative_exceed_process_num
     the first and second processes should be launched successfully
     the third process should be launched failed and output should contain the following string:
     'multi-process option proc-id(2) should be less than num-procs(2)'
+
+Test Case: test_multiprocess_port_stop
+======================================
+Subcase 1: primary_port_stop
+----------------------------
+test steps
+~~~~~~~~~~
+
+1. Launch the app ``testpmd``, start 2 process with the following arguments::
+
+   ./dpdk-testpmd -l 1,2 --proc-type=auto -a 0000:17:01.0 --log-level=ice,7 -- -i --rxq=8 --txq=8  --num-procs=2 --proc-id=0
+   ./dpdk-testpmd -l 3,4 --proc-type=auto -a 0000:17:01.0 --log-level=ice,7 -- -i --rxq=8 --txq=8  --num-procs=2 --proc-id=1
+
+2. stop port  in secondary process and start fwd in primary::
+
+    secondary process:
+      testpmd> port stop 0
+
+    primary process:
+      testpmd> set fwd rxonly
+      testpmd> set verbose 1
+      testpmd> start
+
+3. send 1 packet from scapy::
+
+   >>> sendp([Ether(dst="00:11:22:33:44:55", src="52:00:00:00:00:00")/IP()/Raw(load="P"*20)], iface="ens6")
+
+expected result
+~~~~~~~~~~~~~~~
+
+Check that one packet was received in primary process::
+
+    primary process:
+      testpmd> stop
+
+      ---------------------- Forward statistics for port 0  ----------------------
+        RX-packets: 1              RX-dropped: 0             RX-total: 1
+        TX-packets: 0              TX-dropped: 0             TX-total: 0
+      ----------------------------------------------------------------------------
+
+Subcase 2:secondary_port_stop
+------------------------------
+test steps
+~~~~~~~~~~
+
+1. Launch the app ``testpmd``, start 2 process with the following arguments::
+
+   ./dpdk-testpmd -l 1,2 --proc-type=auto -a 0000:17:01.0 --log-level=ice,7 -- -i --rxq=8 --txq=8  --num-procs=2 --proc-id=0
+   ./dpdk-testpmd -l 3,4 --proc-type=auto -a 0000:17:01.0 --log-level=ice,7 -- -i --rxq=8 --txq=8  --num-procs=2 --proc-id=1
+
+2. stop port in primary process and start fwd in secondary::
+
+    primary process:
+      testpmd> port stop 0
+
+    secondary process:
+      testpmd> set fwd rxonly
+      testpmd> set verbose 1
+      testpmd> start
+
+3. send 1 packet from scapy::
+
+   >>> sendp([Ether(dst="00:11:22:33:44:55", src="52:00:00:00:00:00")/IP()/Raw(load="P"*20)], iface="ens6")
+
+expected result
+~~~~~~~~~~~~~~~
+
+   Check that no packet was received.
+
+   secondary process::
+
+    testpmd> stop
+    Telling cores to stop...
+    Waiting for lcores to finish...
+
+    ---------------------- Forward statistics for port 0  ----------------------
+    RX-packets: 0              RX-dropped: 1             RX-total: 1
+    TX-packets: 0              TX-dropped: 0             TX-total: 0
+    ----------------------------------------------------------------------------
+
+
+TestCase: test_multiprocess_vf_reset
+====================================
+Subcase 1: primary_port_reset
+-----------------------------
+test steps
+~~~~~~~~~~
+
+1. Launch the app ``testpmd``, start 2 process with rxq/txq set as 8 (proc_id:0~1, queue id:0~7) with the following arguments::
+
+    ./dpdk-testpmd -l 1,2 --proc-type=auto -a 0000:17:01.0 --log-level=ice,7 -- -i --rxq=8 --txq=8 --num-procs=2 --proc-id=0
+    ./dpdk-testpmd -l 3,4 --proc-type=auto -a 0000:17:01.0 --log-level=ice,7 -- -i --rxq=8 --txq=8 --num-procs=2 --proc-id=1
+
+
+2. reset port in primary when secondary is running::
+
+    primary process:
+      testpmd> port stop 0
+      testpmd> port reset 0
+
+
+expected result
+~~~~~~~~~~~~~~~
+
+secondary process & primary process::
+
+     testpmd>show port info 0
+
+   Check that link status of port 0 is `down`
+
+
+Subcase 2: secondary_port_reset
+-------------------------------
+test steps
+~~~~~~~~~~
+
+1. Launch the app ``testpmd``, start 2 process with rxq/txq set as 8 (proc_id:0~1, queue id:0~7) with the following arguments::
+
+    ./dpdk-testpmd -l 1,2 --proc-type=auto -a 0000:17:01.0 --log-level=ice,7 -- -i --rxq=8 --txq=8 --num-procs=2 --proc-id=0
+    ./dpdk-testpmd -l 3,4 --proc-type=auto -a 0000:17:01.0 --log-level=ice,7 -- -i --rxq=8 --txq=8 --num-procs=2 --proc-id=1
+
+2. reset port in secondary when primary is running::
+
+    secondary process:
+      testpmd> port stop 0
+      testpmd> port reset 0
+
+expected result
+~~~~~~~~~~~~~~~
+
+primary process & secondary process::
+
+    testpmd> show port info 0
+
+   Check that link status of port 0 is `up`
\ No newline at end of file
