cisco.nxos.nxos_vxlan_vtep_vni: suppress_arp ignored if vni already exists

[andrewbonney]

SUMMARY

If a VNI has already been associated with an NVE interface, the cisco.nxos.nxos_vxlan_vtep_vni module fails to apply changes to the suppress_arp parameter during subsequent operations.

ISSUE TYPE

• Bug Report

COMPONENT NAME

cisco.nxos.nxos_vxlan_vtep_vni

ANSIBLE VERSION

ansible 2.10.15
  config file = ....
  configured module search path = ['....']
  ansible python module location = /..../python3.8/site-packages/ansible
  executable location = /..../venv/bin/ansible
  python version = 3.8.10 (default, Sep 28 2021, 16:10:42) [GCC 9.3.0]

COLLECTION VERSION

# /..../collections/ansible_collections
Collection Version
---------- -------
cisco.nxos 2.7.1

CONFIGURATION

OS / ENVIRONMENT

NXOS 9.3(3) Nexus 92160

STEPS TO REPRODUCE

1. Associate a VNI with the NVE interface

- cisco.nxos.nxos_vxlan_vtep_vni:
    interface: "nve1"
    vni: "1003000"
    multicast_group: "239.0.0.1"

2. Re-run the above, but with suppress_arp now defined

- cisco.nxos.nxos_vxlan_vtep_vni:
    interface: "nve1"
    vni: "1003000"
    multicast_group: "239.0.0.1"
    suppress_arp: "yes"

EXPECTED RESULTS

NVE interface is changed with config as follows:

member vni 1003000
  mcast-group 239.0.0.1
  suppress-arp

ACTUAL RESULTS

The switch config remains unchanged from when the VNI was originally set up. No changes are identified in the second Ansible run.

member vni 1003000
  mcast-group 239.0.0.1

If the suppress_arp parameter was included in the initial module run the config would have applied correctly, but any future changes to its value are not possible.

[saruter]

I can confirm that also changing the suppress-arp from true to false doesn't change anything. The suppress-arp command stays in config of the switch under configured nve-interface.