Creating a VCN

On Compute Cloud@Customer, a virtual cloud network (VCN) a virtual, private network that closely resembles a traditional network. VCNs can be further divided into IP subnets. VCNs can communicate with each other through various types of gateways, each type intended for a particular purpose.

Avoid entering confidential information in names and tags.

1. In the Compute Cloud@Customer Console navigation menu, click Networking, then click Virtual Cloud Networks.
2. Click Create Virtual Cloud Network.
3. Enter the following information:
  
  Name: Enter a descriptive name for the VCN.
  
  Compartment: Select the compartment in which to create the VCN.
  
  CIDR Block: Specify which CIDR range can be used within the VCN.
  
  DNS: If you check the box to use DNS host names in this VCN, then you can either enter a DNS label or leave the field blank to let the system generate a label for you. The first character of the label must be a letter. Only use letters and numbers. Up to 15 characters are allowed.
4. Tagging: (Optional) Add one or more tags to this resource. Tags can also be applied later. For more information about tagging resources, see Resource Tags.
5. Click Create Virtual Cloud Network.
  
  The details page of the new VCN is displayed.

Use the oci network vcn create command and required parameters to create a VCN.

oci network vcn create --compartment-id compartment_OCID --cidr-block 10.0.0.0/16 --dns-label vcn1 --display-name VCN1 [OPTIONS]

For a complete list of CLI commands, flags, and options, see the Command Line Reference.

Procedure

Gather the information that you need to run the command:
- Compartment OCID (oci iam compartment list --compartment-id-in-subtree true)

Enter the vcn create command using at least the compartment OCID and CIDR block options.

To use DNS host names in the VCN, include the DNS label in the create command. It can't be added later.

Optionally, set a descriptive name for the VCN.

$ oci network vcn create --compartment-id <compartment_OCID> \
--cidr-blocks '["<cidr-block_eg-10.0.0.0/16>"]' --dns-label <dns_label> --display-name <display_name>
{
  "data": {
    "cidr-block": "10.0.0.0/16",
    "cidr-blocks": [
      "10.0.0.0/16"
    ],
    "compartment-id": "ocid1.compartment.unique_ID",
    "default-dhcp-options-id": "ocid1.dhcpoptions.unique_ID",
    "default-route-table-id": "ocid1.routetable.unique_ID",
    "default-security-list-id": "ocid1.security_list.unique_ID",
    "defined-tags": {},
    "display-name": "VCN1",
    "dns-label": "vcn1",
    "freeform-tags": {},
    "id": "ocid1.vcn.unique_ID",
    "ipv6-cidr-block": null,
    "ipv6-private-cidr-block": null,
    "lifecycle-state": "PROVISIONING",
    "time-created": "2023-04-27T04:34:58.722835+00:00",
    "vcn-domain-name": "vcn1.oraclevcn.com"
  },
  "etag": "unique_ID"
}

Use the CreateVCN operation to create a VCN.

For information about using the API and signing requests, see REST APIs and Security Credentials. For information about SDKs, see Software Development Kits and Command Line Interface.

Oracle Cloud Infrastructure Documentation

Creating a VCN