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Difficulty: HardImpact of Automation on Network Management

An enterprise network relies on SNMPv3 polling at 15-minute intervals alongside manual SSH sessions to monitor and maintain 400 access switches. During an incident investigation, engineers discover that out-of-band configuration changes occurred and went undetected for several hours between polling cycles. How does migrating to an API-driven centralized controller framework fundamentally alter this operational paradigm to address configuration drift?

  1. It introduces model-driven telemetry and centralized state enforcement to continuously monitor, detect, and automatically reconcile unauthorized configuration drift in real time.Answer
  2. B
    It utilizes periodic HTTP GET requests generated by the controller to push fresh configuration files and overwrite unapproved running configurations.
  3. C
    It replaces SNMP by requiring local agent software on every switch to intercept local CLI commands and tunnel management traffic through the overlay network.
  4. D
    It offloads the Layer 2 forwarding engine and control plane to centralized hypervisors, preventing physical switches from processing local configuration commands.

Answer

Migrating to an API-driven centralized controller framework introduces model-driven telemetry and centralized state enforcement to continuously monitor, detect, and automatically reconcile unauthorized configuration drift in real time.
Centralized controller-based network management shifts network operations from manual, pull-based polling (SNMP) to programmatic, push-based model-driven telemetry and centralized intent enforcement. Controllers maintain the intended network state as a single source of truth, enabling immediate detection and automated remediation of unauthorized configuration drift.

Step-by-Step Solution

1
Identify the operational limitation of traditional management described in the scenario.
Periodic SNMP polling (pull-based) and manual CLI management create visibility gaps between polling intervals, allowing unauthorized configuration drift to go unnoticed.
Traditional management relies on discrete polling schedules rather than continuous real-time state streaming.
2
Evaluate how modern automation and controller-based frameworks handle change management.
Centralized controllers use programmatic REST APIs and streaming telemetry (push-based) to maintain a single source of truth and detect drift as soon as it occurs.
Declarative configuration models define the intended state, enabling automated state reconciliation when device state diverges.
3
Select the option that accurately describes this operational shift.
Model-driven telemetry and centralized state enforcement solve visibility gaps and enable immediate drift remediation.
This contrasts directly with pull-based SNMP polling and manual CLI management.

Key Concept

Impact of Automation on Network Management: Real-time telemetry, centralized configuration state enforcement, and configuration drift reduction.
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Topics

Impact of Automation on Network Management

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