VXLAN Pool

What is VXLAN Pool?

VXLAN Pool: A VXLAN pool is a collection of VXLAN networks established based on VXLAN Tunnel Endpoints (VTEPs). The VNI of each VXLAN network in a VXLAN pool must be unique.

Before you can use a VXLAN network, create a VXLAN pool in advance.
A VXLAN pool is only a collection of VXLAN networks and cannot be used to create L3 networks.
VXLAN pool supports two types of SDN: software SDN and hardware SDN.
- Software SDN:
  - The VNI range of a software-SDN VXLAN pool can be 1-16777214.
  - Hosts in the cluster to which the software-SDN VXLAN pool is attached must have an IP address as a VXLAN tunnel endpoint (VTEP) in the specified CIDR.
    - Generally, a VTEP corresponds to a NIC IP of a compute node within a cluster. On the Cloud, you can configure a VTEP according to its CIDR. For example,
      - Assume that the NIC IP of a compute node is 10.12.0.8, the netmask is 255.0.0.0, and the gateway is 10.0.0.1. Then, the CIDR of the VTEP is 10.0.0.1/8.
      - Assume that the NIC IP of the compute node is 172.20.12.13, the netmask is 255.255.0.0, and the gateway is 172.20.0.1. Then, the CIDR of the VTEP is 172.20.0.1/16.
    - When a VXLAN pool is attached to a cluster, the IP address that is associated to the VTEP will be checked without checking physical L2 devices.
- Hardware SDN:
  - Make sure a valid SDN network license is added to the platform.
  - Before you can create a hardware-SDN VXLAN pool, add an SDN controller to the Cloud in advance.
  - The VNI range of a hardware-SDN VXLAN pool depends on the distributed vSwitch to which an SDN controller corresponds.
  - The host NIC in the cluster to which the hardware-SDN VXLAN pool is attached must connect to a switch managed by the SDN controller.
  - If you use VCFC to configure hardware SDN, configure the mapping between VLAN and VXLAN on VCFC in advance.

Create a VXLAN Pool

On the main menu of ZStack Cloud, choose Resource Center > Network Resource > L2 Network Resources > VXLAN Pool. On the VXLAN Pool page, click Create VXLAN Pool. Then, the Create VXLAN Pool page is displayed.

The following lists two types of VXLAN pools that you can create:

Create a software-SDN VXLAN pool
Create a hardware-SDN VXLAN pool

Create Software-SDN VXLAN Pool

On the displayed page, set the following parameters:

Zone: By default, the current zone is displayed.
Name: Enter a name for the VXLAN pool.The name must be 1 to 128 characters in length and can contain Chinese characters, letters, digits, spaces, hyphens (-), underscores (_), periods (.), parenthesis (), colons (:), and plus signs (+) and cannot begin or end with spaces.
Description: Optional. Enter a description for the VXLAN pool.
SDN Type: Select Software.
VNI Range: Enter the start ID and end ID of VXLAN networks.
Note:
- You can enter an ID that ranges from 1 to 16777214.
- The end ID must be equal to or greater than the start ID.
- The two VNI IDs 16777215 and 16777216 are reserved by the system of this cloud platform.
Cluster: Optional. Attach the VXLAN pool to a cluster.
Note:
- You can attach a VXLAN pool to a cluster when you create the VXLAN pool or after the VXLAN pool is created.
- When you attach the VXLAN pool to a cluster, IP addresses of the compute nodes must be available in the cluster that correspond to the VTEP CIDR block.
VTEP CIDR: Enter the corresponding VTEP CIDR block.

Create Hardware-SDN VXLAN Pool

To create a hardware-SDN VXLAN Pool, make sure a valid SDN network license is added to the platform.

On the displayed page, set the following parameters:

Zone: By default, the current zone is displayed.
Name: Enter a name for the VXLAN pool. The name must be 1 to 128 characters in length and can contain Chinese characters, letters, digits, spaces, hyphens (-), underscores (_), periods (.), parenthesis (), colons (:), and plus signs (+) and cannot begin or end with spaces.
Description: Optional. Enter a description for the VXLAN pool.
SDN Type: Select Hardware.
SDN Controller: Select an SDN controller.
Note: You need add an SDN controller to the cloud platform in advance.
VNI Range: Enter the start ID and end ID of hardware-based VXLAN networks.
Note:
- The end ID must be equal to or greater than the start ID.
- The VNI range of a hardware-SDN VXLAN pool varies depending on the virtual distributed switches associated with the SDN controller.
- This parameter will not be displayed if the vendor of the selected SDN controller is HUAWEI.
Cluster: Optional. Attach the VXLAN pool to a cluster.
Note: You can attach a cluster to a VXLAN pool when you create the VXLAN pool or after the VXLAN pool is created.
NIC: Enter a host NIC.
Note: The host NICs in the cluster attached to the VXLAN pool must be connected with the switches managed by the SDN controller.

Manage a VXLAN Pool

On the main menu of ZStack Cloud, choose Resource Center > Network Resource > L2 Network Resources > VXLAN Pool. Then, the VXLAN Pool page is displayed.

The following table lists the actions that you can perform on a VXLAN pool.

Action	Description
Create VXLAN Pool	Create a VXLAN pool.
Edit VXLAN Pool	Edit the name and description of the VXLAN pool.
Attach Cluster	Attach the VXLAN pool to a cluster. Software-SDN VXLAN Pool: You need to specify a VTEP CIDR. Make sure that the hosts in the cluster attached to the software-SDN VXLAN pool have an IP address as the VTEP in the specified CIDR. Hardware-SDN VXLAN Pool: The host NICs in the cluster attached to the VXLAN pool must be connected with the switches managed by the SDN controller.
Detach Cluster	Detach the VXLAN pool from a cluster.
Set Sharing Mode	Set the sharing mode of a resource. The platform provides the following sharing modes: Share Globally: Shares the resource to all projects and accounts. Share to Specified Projects/Accounts: Shares the resource with specified projects and accounts. Not Share: Revokes the resource from projects and accounts to which the resource is shared. If you set Sharing Mode to Not Share for a resource, other projects and accounts cannot use the resource. Note: If you change the Sharing Mode setting of a resource from Share Globally to Share to Specified Projects/Accounts, the resource is visible only to the specified projects or accounts the resource is shared to. If the resource that you share to the specified projects oraccounts is being used by these projects or accounts and then you change the Sharing Mode of the resource, the change does not take effect on the projects or accounts immediately. They can reverse and use the resource until it is released. VXLAN pools created by using hardware SDNs cannot be shared.
Delete VXLAN Pool	Deleting a VXLAN pool also deletes the VXLAN networks in the pool and the associated L3 networks and VM NICs. Proceed with caution.

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