First commit of Neighbor Group config article.

Author: joemarshallmsft

articles/operator-nexus/reference-neighbor-group-configuration.md

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+---
+title: Azure Operator Nexus neighbor group configuration
+description: Configuration details and examples for Azure Operator Nexus neighbor groups.
+author: joemarshallmsft
+ms.author: joemarshall
+ms.service: azure-operator-nexus
+ms.topic: reference
+ms.date: 02/19/2024
+ms.custom: template-reference
+---
+
+# Neighbor Group Configuration Overview
+
+A neighbor group allows you to group endpoints (either IPv4 or IPv6) under a single logical resource. A neighbor group can be used to send load-balanced filtered traffic across different probe endpoints. You can use the same Neighbor group across different Network TAPs & Network Tap rules.
+
+## Parameters for a Neighbor Group
+
+| Parameter  | Description | Example | Required |
+|--|--|--|--|
+| resource-group | The resource group that contains the neighbor group. | ResourceGroupName | True         |
+| resource-name  | The name of the neighbor group. | example-Neighbor  | True         |
+| location       | The Azure region that contains the neighbor group.                          | eastus            | True         |
+| destination    | List of Ipv4 or Ipv6 destinations to forward traffic.                       | 10.10.10.10       | True         |
+
+## Creating a Neighbor Group
+
+The following command creates a neighbor group:
+
+```azurecli
+az networkfabric neighborgroup create \
+    --resource-group "example-rg" \
+    --location "westus3" \
+    --resource-name "example-neighborgroup" \
+    --destination "{ipv4Addresses:['10.10.10.10']}"
+```
+
+Expected output:
+
+```
+{
+  "properties": {
+    "networkTapIds": [
+    ],
+    "networkTapRuleIds": [
+    ],
+    "destination": {
+      "ipv4Addresses": [
+        "10.10.10.10",
+      ]
+    },
+    "provisioningState": "Succeeded",
+    "annotation": "annotation"
+  },
+  "tags": {
+    "keyID": "KeyValue"
+  },
+  "location": "eastus",
+  "id": "/subscriptions/subscriptionId/resourceGroups/example-rg/providers/Microsoft.ManagedNetworkFabric/neighborGroups/example-neighborGroup",
+  "name": "example-neighborGroup",
+  "type": "microsoft.managednetworkfabric/neighborGroups",
+  "systemData": {
+    "createdBy": "[email protected]",
+    "createdByType": "User",
+    "createdAt": "2023-05-23T05:49:59.193Z",
+    "lastModifiedBy": "[email protected]",
+    "lastModifiedByType": "User",
+    "lastModifiedAt": "2023-05-23T05:49:59.194Z"
+  }
+}
+```
+
+
+## Show a Neighbor Group
+
+This command displays an IP extended community resource:
+
+```azcli
+az networkfabric neighborgroup show \
+    --resource-group "example-rg" \
+    --resource-name "example-neighborgroup"
+```
+
+Expected output:
+
+```
+{
+  "properties": {
+    "networkTapIds": [
+    ],
+    "networkTapRuleIds": [
+    ],
+    "destination": {
+      "ipv4Addresses": [
+        "10.10.10.10",
+      ]
+    },
+    "provisioningState": "Succeeded",
+    "annotation": "annotation"
+  },
+  "tags": {
+    "keyID": "KeyValue"
+  },
+  "location": "eastus",
+  "id": "/subscriptions/subscriptionId/resourceGroups/example-rg/providers/Microsoft.ManagedNetworkFabric/neighborGroups/example-neighborGroup",
+  "name": "example-neighborGroup",
+  "type": "microsoft.managednetworkfabric/neighborGroups",
+  "systemData": {
+    "createdBy": "[email protected]",
+    "createdByType": "User",
+    "createdAt": "2023-05-23T05:49:59.193Z",
+    "lastModifiedBy": "[email protected]",
+    "lastModifiedByType": "User",
+    "lastModifiedAt": "2023-05-23T05:49:59.194Z"
+  }
+}
+```