Nutanix OpenStack Part III – Network Management – Virtualization, DBaaS & Whatever Crosses My Mind

This will be the third part of my Nutanix OpenStack blog series and it will cover the OpenStack Neutron network service. The following blog posts has been released so far:

It’s now time to create two networks that can be used by the images we will create later. The first network will not offer DHCP capabilities but the second one will.

Before we start create any network i’ll show you the existing networks in my AHV based Nutanix Cluster. This can be done via e.g. acli or PRISM and acli net.list (which you can run from any available CVM in the Nutanix cluster) gives you the following available networks:

Important: Do not use a VLAN ID/Identifier that already exists in AHV when creating OpenStack based networks.

Network 1 – VLAN ID 120

Follow the below steps to create a network for Project Customer01 with VLAN ID 120

Go to System ->Networks and click Create network
I provided the following information for this specific network
- Name = testnet01
- Project = Customer01
- Provider Network Type = VLAN
  - Available options at this time are Local and VLAN
- Physical Network = default
- Segmentation ID = 120
- Admin State = Up
- External = Click the check box
- Click Create Network

Network created successfully and can be displayed in OpenStack UI

Network 2 – VLAN ID 220 + Subnet

To create a network with IPAM services you follow the steps outlined in section “Network 1 – VLAN ID 120” and then move on with the below steps.

Click the Network Name in the Networks Section
Click Create Subnet
Provide information for the following:
- Subnet Name = 172.0.1-network
- Network Address = 172.0.1.0/24
- IP Version = IPv4
- Gateway IP = 172.0.1.1(required even if it does not exists)
- Click Next
- Click the check box Enable DHCP
- Allocation Pools = 172.0.1.101,172.0.1.199
- DNS Name Servers = 172.0.1.3 (required)
- Click Create