Skip to content

Configure ZTP server with CV collection

Configure management network

Because we want to be generic, let’s configure a DHCP server on NAT gateway to provide fixed DHCP address to your devices. Thus you will be able to get access to them easily. To support that, we can leverage arista.cvp.dhcp_configuration to install and configure a DHCP server.

This role requires a set of information related to your own setup:

For your out of band management network:

  • Subnet your are using to allocate your devices IP
  • Name server to send to your DHCP client
  • Default scope for unknown devices.

For every devices:

  • EOS device hostname you want to configure.
  • Mac address to use to identify request from your device.
  • IP address to allocate.
  • An optional URI for ZTP registration.
Create an inventory file

Inventory contains information related to your nat-gateway:

# inventory.yml
---
all:
  children:
    DCHP:
      hosts:
        nat_gateway:
          ansible_host: < YOUR RUNNER NETWORK>
          ansible_user: < USERNAME >
          ansible_password: < PASSWORD >
Create host variables

Host variables for your NAT-GATEWAY should be defined like this:

---
ztp:
  default:
    registration: '< Optional ZTP registration URL >'
    gateway: < OOB DEFAULT GATEWAY >
    nameservers:
      - < DNS >
  general:
    subnets:
      - network: < OOB SUBNET >
        netmask: < OOB NETMASK >
        gateway: < OOB DEFAULT GATEWAY >
        nameservers:
          - < DNS >
        start: < FIRST LEASE IP >
        end: < LAST LEASE IP >
        lease_time: 300
  clients:
  # AVD/CVP Integration
    - name: DC1-SPINE1
      mac: 0c:1d:c0:1d:62:01
      ip4: 10.73.1.11
    - name: DC1-SPINE2
      mac: 0c:1d:c0:1d:62:02
      ip4: 10.73.1.12
Playbook to configure DHCP

Playbok is fairly simple:

---
- name: Configure DHCP Service for ZTP
  hosts: DHCP
  gather_facts: true
  tasks:
    - name: 'Execute DHCP configuration role'
      import_role:
        name: arista.cvp.dhcp_configuration

Last update: March 30, 2021
Back to top