VLAN CHANGES

VLAN modifications are small changes with big blast radii — done by hand, hard to verify, and a classic cause of mystery outages when segmentation quietly breaks.

Actors

  • Network Engineer
  • Change Manager
  • Security Engineer

Systems / Vendors

  • Cisco DNA Center
  • Ansible
  • ServiceNow

Business Question

"A 'simple VLAN change' took out the warehouse scanners for a day — how is this still a manual job?"

What SPoG Does

  • Automates VLAN modifications end to end with pre-validation of the affected topology.
  • Verifies segmentation and connectivity automatically after every change.
  • Keeps a full audit trail of what changed, where, and by whose approval.

Outcome Metrics

−70%

VLAN change effort

−80%

Segmentation-related incidents

1–2 wks

To first automated change