T-ISP-031 · Change-Window Validator

Gate a planned change against NOC rules: verify the current time falls within an approved maintenance window, no conflicting freeze is active, and required pre-checks (no active P1, backups present) pass before authorizing execution.

Cisco IOS/XE

Juniper Junos

Arista EOS

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Capabilities

Maintenance-window check
Freeze-period block
Active-incident gate
Backup presence check
Approver validation
Go/no-go verdict

Required inputs

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

Parameter	Type	Default	Notes
Timezone (IANA) tz	string	UTC	—
Require backup (true\|false) require_backup	string	true	—

Hint 1 — Name your vendors and OS versions

Mention the exact platforms you run (Cisco IOS/XE, Juniper Junos, Arista EOS) so the generated isp & peering logic uses the right CLI/NETCONF syntax.

Hint 2 — State your real thresholds

Provide concrete values for Timezone (IANA), Require backup (true|false) instead of the defaults — they shape what counts as a fault.

Hint 3 — Prioritize the checks you need

This tool can maintenance-window check and freeze-period block. 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

2026-06-16 02:00:00 INFO  Evaluating change CHG-4821 at 2026-06-16T02:00:00Z
2026-06-16 02:00:00 INFO  Window OK: within Sat 01:00-05:00 UTC
2026-06-16 02:00:00 INFO  No active freeze, no P1 incidents, backup present
2026-06-16 02:00:00 INFO  VERDICT: GO