Add support for layer3 sub-interfaces using dot1q encapsulation in the cisco.ios.ios_l3_interfaces module

[dwebr]

SUMMARY

Add support for layer3 sub-interfaces using dot1q encapsulation in the cisco.ios.ios_l3_interfaces module

ISSUE TYPE

• Feature idea to support L3 sub-interfaces on IOS devices
• This feature should be identical in implementation with the cisco.nxos.nxos_l3_interfaces module support for "dot1q" encap

COMPONENT NAME

This would be an enhancement to the existing cisco.ios.ios_l3_interfaces module

ADDITIONAL INFORMATION

Workaround today is to use a Jinja template called from a role setup to configure L3 interfaces.

# The cisco.ios.ios_l3_interfaces module does not support sub-interfaces as a result
# we need to use a Jinja template for the interface L3 configuration. The regular cisco.ios.ios_l2_interfaces
# module allows for sub-interface creation but no encap assignment is possible in cisco.ios.ios_l3_interfaces

- name: IOS L3 Interface Jinja Template
  cisco.ios.ios_config:
    src: "cisco.ios.ios_l3_interfaces"
  register: results
  when: l3_interface_list | length > 0

Template: cisco.ios.ios_l3_interfaces
{% for intf in l3_interfaces %}
interface {{ intf.name }}
{% if intf.dot1q is defined %}
 encapsulation dot1q {{ intf.dot1q }}
{% endif %}
{% if intf.ipv4 is defined %}
 ip address {{ intf.ipv4[0].address | ansible.utils.ipaddr('address') }} {{ intf.ipv4[0].address | ansible.utils.ipaddr('netmask') }}
{% endif %}
{% endfor %}