Config Change Impact Analyzer

Pre/post change validation: automated config diff, routing table delta verification, BGP prefix stability check, connectivity SLA re-measurement, and auto-rollback trigger on SLA breach.

Cisco IOS/XE/XR/NX-OS

Juniper

Arista

NAPALM

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Capabilities

Git-style config diff
Routing table delta
BGP prefix stability
OSPF adjacency verify
Connectivity SLA re-check
Auto-rollback trigger
Change impact score

Required inputs

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

Parameter	Type	Default	Notes
Checkpoint directory checkpoint_dir	string	./checkpoints/	—
Max acceptable loss (%) sla_loss_pct	number	0.1	—
Max prefix drift (%) prefix_drift_pct	number	5	—
Auto-rollback on SLA fail auto_rollback	bool	true	—

Hint 1 — Name your vendors and OS versions

Mention the exact platforms you run (Cisco IOS/XE/XR/NX-OS, Juniper, Arista, …) so the generated analysis logic uses the right CLI/NETCONF syntax.

Hint 2 — State your real thresholds

Provide concrete values for Checkpoint directory, Max acceptable loss (%), Max prefix drift (%) instead of the defaults — they shape what counts as a fault.

Hint 3 — Prioritize the checks you need

This tool can git-style config diff and routing table delta. 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

CHANGE IMPACT ANALYSIS — change window 14:00–14:30
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

CONFIG DIFF — core-rtr-01:
  + router bgp 65001
  +  neighbor 10.0.0.10 remote-as 65002
  +  neighbor 10.0.0.10 route-map RM-IN in
  - router ospf 1
  -  network 10.1.0.0 0.0.0.255 area 0  ← REMOVED!