Detect simulated VLAN changes using Invariant

To detect changes in VLAN configurations between two network snapshots, fetch the vlan_properties report for each snapshot and compare them.

First, retrieve the report for your current snapshot. Replace <current_snapshot_uuid> with the actual snapshot ID.

invariant show vlan_properties --snapshot <current_snapshot_uuid> --json > current_vlan_properties.json

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Next, retrieve the report for the previous or baseline snapshot. Replace <previous_snapshot_uuid> with its ID.

invariant show vlan_properties --snapshot <previous_snapshot_uuid> --json > previous_vlan_properties.json

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Use a diff tool to compare the two files. Differences will show changes in VLAN IDs, associated interfaces, or VXLAN VNIs.

diff current_vlan_properties.json previous_vlan_properties.json
# Example output might show an interface removed (-) from a VLAN:
# <     "Interfaces": [
# <       "dist-1[Ethernet1]",
# <       "dist-1[Ethernet2]"
# <     ],
# ---
# >     "Interfaces": [
# >       "dist-1[Ethernet1]"
# >     ],

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See Output > Network Information > vlan_properties for report details.