update openvswitch notebook to work with NIC_Basic

fabric_examples/complex_recipes/openvswitch/openvswitch.ipynb

@@ -21,10 +21,10 @@
     "\n",
     "<img src=\"./figs/openvswitch-single.png\" width=\"70%\"><br>\n",
     "\n",
-    "### Limitation\n",
-    "Due to NVIDIA/Mellanox limitation, it appears the desired bridged virtual function forwarding behavior is not something currently supported for SRIOV functions i.e. `NIC_Basic`. VM hosting OVS bridge is required to use Dedicated NICs i.e. `NIC_ConnectX_5` or `NIC_ConnectX_6`.\n",
+    "### Host Placement Considerations\n",
+    "Because of constraints imposed by NVIDIA/Mellanox, when utilizing `NIC_Basic` for an OVS bridge experiment, it is advisable to deploy the VM responsible for running the bridge on a separate host from the VMs linked to the bridge.\n",
     "\n",
-    "We are working on an alternate solution, which would be available in the upcoming release."
+    "Additionally, it's worth noting that this condition does not apply to `NIC_ConnectX_5` and `NIC_ConnectX_6` configurations."
    ]
   },
   {
@@ -65,24 +65,27 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {
-    "tags": []
-   },
+   "metadata": {},
    "outputs": [],
    "source": [
     "slice_name= \"MySlice-openvswitch\"\n",
     "\n",
-    "# we will use CX5 to generate traffic so need sites that have CX5 for this example.\n",
-    "cx5_column_name = 'nic_connectx_5_available'\n",
-    "\n",
-    "# find two sites with available ConnectX-5 \n",
-    "sites = [site1] = fablib.get_random_sites(count=1, filter_function=lambda x: x[cx5_column_name] > 0)\n",
+    "sites = [site1] = fablib.get_random_sites(count=1)\n",
     "print(f\"Sites: {sites}\")\n",
     "\n",
     "site_node_count = 2\n",
     "bridge1_name = 'bridge1'"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "site1=\"EDUKY\""
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -104,7 +107,11 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "### Add Bridge1"
+    "### Add Bridge1\n",
+    "\n",
+    "Because of constraints imposed by NVIDIA/Mellanox, when utilizing `NIC_Basic` for an OVS bridge experiment, it is advisable to deploy the VM responsible for running the bridge on a separate host from the VMs linked to the bridge.\n",
+    "\n",
+    "`bridge1` in the example below is requested on host `{site1..lower()}-w1.fabric-testbed.net`"
    ]
   },
   {
@@ -113,15 +120,18 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "bridge1 = slice.add_node(name=bridge1_name, site=site1, cores=4, ram=8, disk=50, image=default_image)\n",
-    "bridge1_nic = bridge1.add_component(model='NIC_ConnectX_5', name='nic_local')"
+    "bridge1 = slice.add_node(name=bridge1_name, site=site1, cores=4, ram=8, disk=50, image=default_image, host=f\"{site1.lower()}-w1.fabric-testbed.net\")\n",
+    "bridge1_nic1 = bridge1.add_component(model='NIC_Basic', name='nic_local_1')\n",
+    "bridge1_nic2 = bridge1.add_component(model='NIC_Basic', name='nic_local_2')"
    ]
   },
   {
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "### Add Host Nodes"
+    "### Add Host Nodes\n",
+    "\n",
+    "Host nodes are required to be located on a host other than `bridge1`, specifically on `{site1.lower()}-w2.fabric-testbed.net`. These nodes can be distributed across any other host, or all hosted on the same host, provided it is not the `bridge1` host."
    ]
   },
   {
@@ -135,12 +145,12 @@
     "for node_num in range(site_node_count):\n",
     "    node_name = f\"{site1.lower()}{node_num+1}\"\n",
     "\n",
-    "    node = slice.add_node(name=node_name, site=site1, cores=4, ram=8, disk=50, image=default_image)\n",
+    "    node = slice.add_node(name=node_name, site=site1, cores=4, ram=8, disk=50, image=default_image, host=f\"{site1.lower()}-w2.fabric-testbed.net\")\n",
     "    iface = node.add_component(model='NIC_Basic', name='nic_local').get_interfaces()[0]    \n",
     "    net = slice.add_l2network(name=f\"net{node_num}\")\n",
     "\n",
     "    net.add_interface(iface)\n",
-    "    net.add_interface(bridge1_nic.get_interfaces()[i])\n",
+    "    net.add_interface(bridge1.get_interfaces()[i])\n",
     "    i += 1"
    ]
   },