Question

Your team manages VLANs on a Cisco IOS-XE fleet using Terraform with the iosxe provider. Initially, three VLANs were declared as three separate `iosxe_vlan` resource blocks. The network team now supplies VLAN definitions as a variable map of about 60 entries that changes frequently, and they want adding or removing a VLAN in the map to create or destroy exactly the corresponding resource without editing HCL or affecting unrelated VLANs. Which approach best meets this requirement?

Accepted Answer

Refactor to a single `iosxe_vlan` resource using `for_each` over the VLAN map, keyed by VLAN ID

Answer

Use a `count` meta-argument on the `iosxe_vlan` resource indexed by the length of the VLAN map

Answer

Keep separate resource blocks and wrap them in a `dynamic` block that iterates the map

Answer

Generate the .tf files with a Jinja2 template on each run and apply the rendered configuration