Skip to main content

Reviewing Results

A committed prediction produces a predicted snapshot and a set of outputs that compare it against the base. This page covers what each output shows and how to validate a prediction end to end. The Run predict analysis step of the wizard shows these outputs.

Config Diff​

Forward Predict shows a side-by-side diff of the baseline running config against the predicted running config for each changed device. The diff shows whether the change produced the intended config, before any of its downstream effects. See How Predict Works → Config Change.

A changed device's config changes on the Run predict analysis step: the CLI commands entered and the resulting running-config diff, with a Review full config diffs link

BGP Route Trace​

Trace any prefix's propagation from origin to target across the predicted network, with the policy applied at each hop and the resulting attributes. Use it to check whether a routing change propagated as intended. See Prefix Search & Trace.

Intent Checks​

Validate a predicted snapshot with the same tools as a collected one:

ToolUse
Path AnalysisRun the reachability or isolation query the change targeted.
VerifyRe-run existence and isolation checks.
NQERun any query against the predicted snapshot.

Running the same checks on both snapshots shows two things: whether the change meets its intent (a check that failed on the base passes on the predicted), and whether it regresses covered behavior (a check that passed on the base still passes on the predicted). The second signal is only as strong as the coverage: when many existence and isolation checks are defined and all stay passing with none flipping to fail, no covered behavior regressed. A single passing check does not by itself rule out a side effect, since it covers only what it tests.

The Intents validation after change panel on the Run predict analysis step, showing each intent check's status on the base versus the predicted snapshot

Exporting the Report​

The Export report menu produces two artifacts:

  • Download report *.pdf: a printable report through your browser's print dialog. Share it or attach it to a change record.
  • Download config changes *.zip: the per-device config-change artifacts as a ZIP.

Next​