NAPT
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sdwan
Expert
phased

MPLS→SD-WAN Migration Assistant

Phased migration orchestrator: coexistence BGP handoff, per-site traffic shift by app class, SLA monitoring during cutover, auto-revert on SLA breach and a decom checklist.

Cisco SD-WAN
MPLS
BGP
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Capabilities

  • Coexistence BGP handoff
  • Per-site traffic shift by app class
  • SLA monitoring during cutover
  • Auto-revert on SLA breach
  • Per-phase rollback
  • Decommission checklist

Required inputs

Parameters the script accepts. Defaults shown; some are vendor- or context-gated.

ParameterTypeDefaultNotes
Migration phase
phase
number1—
Traffic shift (%)
shift_pct
number25—
Auto-revert loss (%)
revert_loss
number4—

Hint 1 — Name your vendors and OS versions

Mention the exact platforms you run (Cisco SD-WAN, MPLS, BGP) so the generated sd-wan logic uses the right CLI/NETCONF syntax.

Hint 2 — State your real thresholds

Provide concrete values for Migration phase, Traffic shift (%), Auto-revert loss (%) instead of the defaults — they shape what counts as a fault.

Hint 3 — Prioritize the checks you need

This tool can coexistence BGP handoff and per-site traffic shift by app class. Ask for the subset relevant to your incident to keep output focused.

Hint 4 — Describe your inventory format

Tell the assistant whether your device list is CSV, YAML, or JSON and which columns it has, so parsing matches your data.

Sample inventory schema

Authoritative shape of the device/policy data this script consumes.

No bundled inventory sample. The script accepts standard device lists (CSV/YAML) with hostname, mgmt IP, vendor, and credentials.

Expected output

Reference terminal output the script should produce — used as a stylistic and structural target.

terminal
[2026-06-12] INFO  Migration phase 1 — 4 pilot sites
  BR-PUNE-01: shift 25% app-class BULK → SD-WAN biz-internet
  SLA watch (10 min): loss 0.4% lat 22ms — within bounds
[OK] BR-PUNE-01 cutover stable · MPLS kept as backup
[REVERT] BR-NAGPUR-02: loss 5.2% (>4%) — auto-reverted to MPLS
Summary: 3 migrated · 1 reverted · phase 1 complete