diff --git a/test_plans/vhost_async_robust_cbdma_test_plan.rst b/test_plans/vhost_async_robust_cbdma_test_plan.rst
index 6e17ed79..937c1cd7 100644
--- a/test_plans/vhost_async_robust_cbdma_test_plan.rst
+++ b/test_plans/vhost_async_robust_cbdma_test_plan.rst
@@ -207,31 +207,35 @@ This case tests split and packed ring with cbdma can work normally when the fron
 	./x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-5 -n 4 --file-prefix=vhost \
 	-a 0000:00:04.0 -a 0000:00:04.1 -a 0000:00:04.2 -a 0000:00:04.3 -a 0000:00:04.4 -a 0000:00:04.5 -a 0000:00:04.6 -a 0000:00:04.7 \
 	-a 0000:80:04.0 -a 0000:80:04.1 -a 0000:80:04.2 -a 0000:80:04.3 -a 0000:80:04.4 -a 0000:80:04.5 -a 0000:80:04.6 -a 0000:80:04.7 \
-	--vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,dmas=[txq0@0000:00:04.0;txq1@0000:00:04.1;txq2@0000:00:04.2;txq3@0000:00:04.3;txq4@0000:00:04.4;txq5@0000:00:04.1;rxq2@0000:00:04.2;rxq3@0000:00:04.3;rxq4@0000:00:04.4;rxq5@0000:00:04.5;rxq6@0000:00:04.6;rxq7@0000:00:04.7]' \
-	--vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,dmas=[txq0@0000:80:04.0;txq1@0000:80:04.1;txq2@0000:80:04.2;txq3@0000:80:04.3;txq4@0000:80:04.4;txq5@0000:80:04.1;rxq2@0000:80:04.2;rxq3@0000:80:04.3;rxq4@0000:80:04.4;rxq5@0000:80:04.5;rxq6@0000:80:04.6;rxq7@0000:80:04.7]' \
+	--vdev 'net_vhost0,iface=vhost-net0,client=1,queues=8,tso=1,dmas=[txq0@0000:00:04.0;txq1@0000:00:04.1;txq2@0000:00:04.2;txq3@0000:00:04.3;txq4@0000:00:04.4;txq5@0000:00:04.1;rxq2@0000:00:04.2;rxq3@0000:00:04.3;rxq4@0000:00:04.4;rxq5@0000:00:04.5;rxq6@0000:00:04.6;rxq7@0000:00:04.7]' \
+	--vdev 'net_vhost1,iface=vhost-net1,client=1,queues=8,tso=1,dmas=[txq0@0000:80:04.0;txq1@0000:80:04.1;txq2@0000:80:04.2;txq3@0000:80:04.3;txq4@0000:80:04.4;txq5@0000:80:04.1;rxq2@0000:80:04.2;rxq3@0000:80:04.3;rxq4@0000:80:04.4;rxq5@0000:80:04.5;rxq6@0000:80:04.6;rxq7@0000:80:04.7]' \
 	-- -i --nb-cores=4 --txd=1024 --rxd=1024 --rxq=8 --txq=8
 	testpmd> start
 
 3. Launch VM1 and VM2::
 
 	taskset -c 6-16 qemu-system-x86_64 -name vm1 -enable-kvm -cpu host -smp 9 -m 4096 \
-	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
-	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04.img  \
-	-chardev socket,path=/tmp/vm1_qga0.sock,server,nowait,id=vm1_qga0 -device virtio-serial \
-	-device virtserialport,chardev=vm1_qga0,name=org.qemu.guest_agent.2 -daemonize \
-	-monitor unix:/tmp/vm1_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
-	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6002-:22 \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/dev/hugepages,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/image/ubuntu2004.img  \
+	-monitor unix:/tmp/vm1_monitor.sock,server,nowait \
+	-device e1000,netdev=nttsip1 \
+	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6000-:22 \
+	-chardev socket,path=/tmp/vm1_qga0.sock,server,nowait,id=vm1_qga0 \
+	-device virtio-serial \
+	-device virtserialport,chardev=vm1_qga0,name=org.qemu.guest_agent.1 -daemonize \
 	-chardev socket,id=char0,path=./vhost-net0,server \
 	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
 	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=off,mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on -vnc :10
 
 	taskset -c 17-27 qemu-system-x86_64 -name vm2 -enable-kvm -cpu host -smp 9 -m 4096 \
-	-object memory-backend-file,id=mem,size=4096M,mem-path=/mnt/huge,share=on \
-	-numa node,memdev=mem -mem-prealloc -drive file=/home/osimg/ubuntu20-04-2.img  \
-	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 -device virtio-serial \
+	-object memory-backend-file,id=mem,size=4096M,mem-path=/dev/hugepages,share=on \
+	-numa node,memdev=mem -mem-prealloc -drive file=/home/image/ubuntu2004_2.img  \
+	-monitor unix:/tmp/vm2_monitor.sock,server,nowait \
+	-device e1000,netdev=nttsip1 \
+	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6001-:22 \
+	-chardev socket,path=/tmp/vm2_qga0.sock,server,nowait,id=vm2_qga0 \
+	-device virtio-serial \
 	-device virtserialport,chardev=vm2_qga0,name=org.qemu.guest_agent.2 -daemonize \
-	-monitor unix:/tmp/vm2_monitor.sock,server,nowait -device e1000,netdev=nttsip1 \
-	-netdev user,id=nttsip1,hostfwd=tcp:127.0.0.1:6003-:22 \
 	-chardev socket,id=char0,path=./vhost-net1,server \
 	-netdev type=vhost-user,id=netdev0,chardev=char0,vhostforce,queues=8 \
 	-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:02,disable-modern=false,mrg_rxbuf=off,mq=on,vectors=40,csum=on,guest_csum=on,host_tso4=on,guest_tso4=on,guest_ecn=on,guest_ufo=on,host_ufo=on,packed=on -vnc :12
@@ -248,7 +252,7 @@ This case tests split and packed ring with cbdma can work normally when the fron
 	ifconfig ens5 1.1.1.8
 	arp -s 1.1.1.2 52:54:00:00:00:01
 
-6. Scp 1MB file form VM1 to VM2::
+6. Scp 10MB file form VM1 to VM2::
 
 	Under VM1, run: `scp <xxx> root@1.1.1.8:/`   <xxx> is the file name
 
