diff --git a/cisco-xrv-with-qemu.sh b/cisco-xrv-with-qemu.sh
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+### One-time:
+
+# Uncompress the OVA file.
+    tar xvf iosxrv-k9-demo-ova-601.ova
+
+# Convert the vmdk disk to qcow2 format.
+    qemu-img convert iosxrv-demo.vmdk -O qcow2 iosxrv-k9-demo-601.qcow2
+
+# Copy the qcow2 disk to a shared location.
+    cp iosxrv-k9-demo-601.qcow2 /opt/ciscoxr/iosxrv-k9-demo-601.qcow2
+
+# Make the qcow2 disk readonly.
+    chmod 444 /opt/ciscoxr/iosxrv-k9-demo-601.qcow2
+
+### For every router:
+
+# Create the backing file to store the configuration.
+    qemu-img create -f qcow2 -b /opt/ciscoxr/iosxrv-k9-demo-601.qcow2 router1.qcow2
+
+# Start the router.
+    qemu-system-x86_64 \
+        -name ROUTER1 \
+        -m 2048 \
+        -smp cpus=1 \
+        -enable-kvm \
+        -hda router1.qcow2 \
+        -serial telnet::2000,server,nowait \
+        -monitor tcp:127.0.0.1:4000,server,nowait \
+        -display none \
+        -daemonize \
+        -net none \
+        -net nic,model=e1000,vlan=1,macaddr=00:01:00:ff:01:01 \
+        -net nic,model=e1000,vlan=2,macaddr=00:01:00:ff:01:02 \
+        -net nic,model=e1000,vlan=3,macaddr=00:01:00:ff:01:03 \
+        -net nic,model=e1000,vlan=4,macaddr=00:01:00:ff:01:04 \
+        -net socket,vlan=1,udp=127.0.0.1:9011,localaddr=:9001 \
+        -net socket,vlan=2,udp=127.0.0.1:9012,localaddr=:9002 \
+        -net socket,vlan=3,udp=127.0.0.1:9013,localaddr=:9003 \
+        -net socket,vlan=4,udp=127.0.0.1:9014,localaddr=:9004
+
+### Useful commands.
+
+# Info of the qcow2 disk.
+    qemu-img info router1.qcow2