A tax assessor needs to add a new closet switch to an existing SD-Access fabric without rebuilding the campus underlay from scratch. What approach aligns with incremental fabric expansion?
Select an answer to reveal the explanation.
Short Explanation
Adding a closet should feel like plugging in another desk phone on a working PBX—not ripping out the whole phone system. Discover it, give it underlay IP reachability, then let the controller provision the edge role. Greenfield rebuilds are the wrong reflex for one new switch.
Full Explanation
A tax assessor adding a new closet switch to an existing SD-Access fabric should onboard the switch into inventory, ensure underlay reachability, then provision it into the fabric domain as an edge (or appropriate role). Incremental addition is supported; the entire fabric need not be rebuilt for one closet.
Deleting all virtual networks and re-running LAN automation for every existing edge before adding one switch is unnecessary destructive scope.
Replacing the entire underlay IGP with static routes solely on the new closet creates an inconsistent underlay and is not the standard onboarding path.
Converting the closet to ACI leaf mode because SD-Access cannot add edges after Day 0 is false on both counts—SD-Access allows later edges, and ACI is a different architecture.
Exam caveat: underlay IP, MTU, and reachability to CP/border nodes must succeed before overlay provisioning; inventory alone is not enough.
Operational check: inventory the closet switch, confirm loopback reachability into the underlay, provision fabric edge role, and test a wired host onboard. Update the assessor closet spreadsheet with serial, role, and underlay IP for civic asset tracking. In municipal operations, record the rationale in the change ticket so future on-call staff know which control was chosen and which failure modes the rejected options would create for city services. Re-validate after the next maintenance window that the same control still holds under the platform code and policy revisions used by the civic network team.