device,interface,description,ip_address
R1,GigabitEthernet1,MGMT_ACCESS,10.0.0.103/24
R1,GigabitEthernet2,MANAGEMENT,192.168.10.1/24
R1,GigabitEthernet3,ENGINEERING,192.168.20.1/24
R2,GigabitEthernet1,MGMT_ACCESS,10.0.0.104/24
R2,GigabitEthernet2,MANAGEMENT,192.168.10.2/24
R2,GigabitEthernet3,ENGINEERING,192.168.20.2/24
R3,GigabitEthernet1,MGMT_ACCESS,10.0.0.105/24
R3,GigabitEthernet2,MANAGEMENT,192.168.10.3/24
R3,GigabitEthernet3,ENGINEERING,192.168.20.3/24



all:
  hosts:
    R1:
      ansible_host: 10.0.0.103
    R2:
      ansible_host: 10.0.0.104
    R3:
      ansible_host: 10.0.0.105
  vars:
    ansible_network_os: ios
    ansible_connection: network_cli
    ansible_user: cisco
    ansible_password: cisco
    ansible_host_key_checking: false




---
- name: Manage Router Interfaces as Code
  hosts: all
  gather_facts: no

  tasks:
    - name: Read interface definitions from CSV
      read_csv:
        path: interfaces.csv
      delegate_to: localhost
      run_once: true
      register: interface_data

    - name: Enable interfaces and set descriptions
      cisco.ios.ios_interfaces:
        config:
          - name: "{{ item.interface }}"
            description: "{{ item.description }}"
            enabled: true
        state: merged
      loop: "{{ interface_data.list | selectattr('device', 'equalto', inventory_hostname) | list }}"

    - name: Build L3 interface configuration list
      set_fact:
        l3_config: "{{ l3_config | default([]) + [{'name': item.interface, 'ipv4': [{'address': item.ip_address}]}] }}"
      loop: "{{ interface_data.list | selectattr('device', 'equalto', inventory_hostname) | list }}"

    - name: Configure IP addresses on interfaces
      cisco.ios.ios_l3_interfaces:
        config: "{{ l3_config }}"
        state: merged