自動分配範圍：建立 Apigee 執行個體時，允許 Apigee 從分配給 Google 的較大範圍中，分配任何可用的不重疊範圍。每次重新建立執行個體時，系統都會自動分配 IP 範圍。在這種情況下，如果新的執行個體可以使用新的 IP 範圍，且該範圍與其他產品或服務不重疊，則新的執行個體可能會使用新的 IP 範圍。
指定 IP 範圍 - 您可以指定 Apigee 將使用的 IP 範圍。這個 IP 範圍必須來自與 Apigee 對等互連的非重疊範圍。如果您想為多個 Cloud 產品 (例如 Cloud SQL、Cloud Memorystore、Apigee 等) 分配較大的 IP 範圍，且希望能夠為每個產品指定實際 IP 範圍，這個選項就非常實用。只要範圍不是私用公開 IP 位址 (PUPI)，這個範圍可以是 RFC 1918 以外的 IP 範圍。
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[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["難以理解","hardToUnderstand","thumb-down"],["資訊或程式碼範例有誤","incorrectInformationOrSampleCode","thumb-down"],["缺少我需要的資訊/範例","missingTheInformationSamplesINeed","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間：2025-09-03 (世界標準時間)。"],[[["\u003cp\u003eThis content focuses on Apigee (not Apigee hybrid) and its network connectivity through VPC peering, which links the Apigee runtime plane and Customer VPC.\u003c/p\u003e\n"],["\u003cp\u003eVPC peering facilitates both northbound (client to Apigee) and southbound (Apigee to backend services) traffic flow between the Apigee VPC and the Customer VPC.\u003c/p\u003e\n"],["\u003cp\u003eEach Apigee instance requires a unique /22 CIDR range for its runtime plane, along with an additional non-overlapping /28 CIDR range for troubleshooting access.\u003c/p\u003e\n"],["\u003cp\u003eWhen creating an instance, you can either let Apigee auto-allocate the IP range or specify a custom, non-overlapping range, but this range cannot be modified after the instance is created.\u003c/p\u003e\n"],["\u003cp\u003eIt is crucial to ensure that public IPs are not exchanged when creating a peering connection with Google to avoid potential IP conflicts, as Apigee uses privately used public IP addresses (PUPI).\u003c/p\u003e\n"]]],[],null,["# Understanding peering ranges\n\n*This page\napplies to **Apigee** , but not to **Apigee hybrid**.*\n\n\n*View [Apigee Edge](https://docs.apigee.com/api-platform/get-started/what-apigee-edge) documentation.*\n\n| **Important:** This topic only applies to organizations that were created with VPC peering enabled. See also [Apigee networking options](/apigee/docs/api-platform/get-started/networking-options).\n\nApigee facilitates communications between client API requests and Apigee and Cloud services\nthrough a connection between two networks: the Apigee (or *runtime plane* ) and the\nCustomer VPC. These two networks are tethered together using\n[a private connection](/vpc/docs/configure-private-services-access) in a process known\nas *VPC peering*.\n\nThe following example shows how VPC peering enables communication between the Apigee VPC and the\nCustomer VPC:\n\nVPC peering enables the Apigee VPC to process requests and responses sent to the Customer\nVPC:\n\n- **Northbound traffic:** API proxy requests sent from clients to the Customer VPC that are\n passed through to the Apigee runtime plane for processing. Additional services such as logging,\n identity management, and metrics are also accessible to the runtime plane.\n\n- **Southbound traffic:** API proxy requests that must access target APIs or other\n backend services on the Customer VPC constitute the southbound route. These southbound services\n process the responses before returning them\n to the Customer VPC for further processing by the Apigee runtime before a response is sent to the\n client.\n\n\nThe Apigee provisioning step, [Configure service networking](/apigee/docs/api-platform/get-started/install-cli#service-networking), performs the\nVPC peering and allocates an IP Address Range (a CIDR range) to Apigee.\n\nNetwork sizing\n--------------\n\nEach [Apigee instance](/apigee/docs/api-platform/system-administration/instances) requires a non-overlapping CIDR range of /22. The Apigee\nruntime plane (aka data plane) is assigned IP addresses from within the CIDR range.\nAs a result, it's important that the range is reserved for Apigee and not used by other\napplications in the customer VPC network.\n| **Note:** In addition to the /22 range that is created, Apigee requires a non-overlapping, available /28 CIDR range. This /28 range is used by Apigee to access the instance for troubleshooting purposes and cannot be customized or changed. See also [Creating instances](/apigee/docs/api-platform/system-administration/instances).\n\n\nAn instance is created when:\n\n1. An Apigee organization is first provisioned, either through the [UI wizard](/apigee/docs/api-platform/get-started/overview) or the [command-line interface](/apigee/docs/api-platform/get-started/install-cli) (CLI).\n2. When expanding Apigee to a new Cloud region for an existing organization. See also [Expanding Apigee to multiple regions](/apigee/docs/api-platform/system-administration/multi-region).\n\n| **Note:**You must have the role of Apigee Organization Admin or Apigee Operator to create an instance.\n\n\nWhen you create an instance, there are two options for specifying a network IP range:\n\n- **Auto-allocate the range** - When you create an Apigee instance, allow Apigee to allocate any available, non-overlapping range from the larger range allocated to Google. Each time an instance is re-created, the IP range is auto-allocated. In such cases, it is possible that the new instance may use a new IP range, if one is available and is non-overlapping with other products or services.\n- **Specify an IP range** - You can specify the IP range that Apigee will use. This IP range must be from the non-overlapping range that is peered with Apigee. This option is useful when you want to allocate a larger IP range for multiple Cloud products, such as Cloud SQL, Cloud Memorystore, Apigee, and others, and you also want to be able to specify actual IP ranges for each of these products. This range could be a non-RFC 1918 IP range as long as the range is not a privately used public IP address (PUPI)). .\n\n\nAfter you create an instance, you *cannot* change the CIDR range. To change the CIDR range,\nyou must delete the instance and reconfigure a new one. Be careful if you have only one\ninstance in an organization.\n\nConsiderations\n--------------\n\n\nBefore allocating CIDR ranges, refer to\n[Considerations](https://cloud.google.com/vpc/docs/configure-private-services-access#considerations) in the Virtual Private Cloud documentation.\n\n\nWhen creating a peering connection with Google, ensure that public IPs are not\nexchanged. To check:\n\n1. In the Google Cloud console, go to the **VPC Network Peering** page. See also [Using VPC Network Peering](https://cloud.google.com/vpc/docs/using-vpc-peering#console_1).\n\n [Go to VPC network peering](https://console.cloud.google.com/networking/peering/list?_ga=2.60789677.1018243021.1642011235-1753111617.1642011235)\n2. Select your VPC network peering connection.\n3. In the Peering connection details, make sure that **Exchange subnet routes with public IP** is set to **None** , as shown in the following screenshot.\n\n | **Note:** Apigee uses *privately used public IP* (PUPI) addresses, so setting **Exchange subnet routes with public IP** to something other than **None** could potentially cause an IP conflict.\n\n*[VPC]: Virtual Private Cloud"]]
