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Network Management in IT Operations Management

Network Management in IT Operations Management

$249.00
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Self-paced • Lifetime updates
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Includes a practical, ready-to-use toolkit containing implementation templates, worksheets, checklists, and decision-support materials used to accelerate real-world application and reduce setup time.
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This curriculum spans the technical and procedural rigor of a multi-phase network operations readiness program, comparable to internal capability builds for global infrastructure teams managing hybrid environments at scale.

Module 1: Network Infrastructure Assessment and Discovery

  • Conduct automated network device discovery using SNMP and CLI-based polling to identify all Layer 2 and Layer 3 assets, including unmanaged switches.
  • Evaluate the accuracy of network topology maps by reconciling data from NetFlow, CDP, and LLDP against configuration management databases (CMDB).
  • Identify shadow IT devices by analyzing DHCP logs and MAC address vendor prefixes across access layer switches.
  • Assess firmware versions across heterogeneous vendor environments (Cisco, Juniper, Arista) to determine patch compliance and end-of-support risks.
  • Map application dependency flows using packet capture and flow analysis to uncover undocumented interdependencies between business services.
  • Document physical and logical network segmentation, including VLANs, VRFs, and firewall zones, to support compliance audit requirements.

Module 2: Network Monitoring and Performance Management

  • Configure threshold-based alerts for interface utilization, error rates, and latency using time-series databases like InfluxDB or Prometheus.
  • Implement synthetic transaction monitoring for critical applications (e.g., VoIP, ERP) to simulate user experience and detect degradation before user impact.
  • Integrate network performance data with APM tools to correlate infrastructure metrics with application response times.
  • Deploy distributed packet capture points at key network aggregation layers to support forensic analysis without overloading central systems.
  • Adjust polling intervals for SNMP devices based on device type and criticality to balance monitoring granularity with resource utilization.
  • Validate the reliability of BGP and OSPF neighbor states through continuous reachability checks and event-triggered diagnostics.

Module 3: Configuration Management and Change Control

  • Enforce configuration drift detection by scheduling automated diffs between running and baseline configurations using tools like RANCID or Oxidized.
  • Implement role-based access control (RBAC) for configuration changes, ensuring separation between network operators and approvers.
  • Integrate configuration templates with version control systems (e.g., Git) to track changes, support rollbacks, and audit modifications.
  • Standardize interface descriptions and VLAN naming conventions across all switches to ensure operational consistency.
  • Automate pre-change validation checks, such as verifying available ACL space before firewall rule insertion.
  • Enforce change freeze windows during critical business periods and coordinate with change advisory boards (CAB).

Module 4: Fault Management and Incident Response

  • Normalize and deduplicate syslog messages from multi-vendor devices using structured parsing and severity remapping.
  • Route high-severity network alerts to on-call engineers via escalation policies in incident management platforms like PagerDuty.
  • Develop runbooks for common failure scenarios, such as BGP session flaps or STP topology changes, with predefined diagnostic steps.
  • Correlate device-level faults with environmental data (e.g., power, temperature) from DCIM systems to identify root causes.
  • Implement automated suppression of alerts during planned maintenance to reduce noise in monitoring systems.
  • Conduct post-incident reviews to update monitoring thresholds and detection logic based on actual failure patterns.

Module 5: Capacity Planning and Bandwidth Optimization

  • Forecast bandwidth demand for WAN links by analyzing 95th percentile utilization trends over six-month intervals.
  • Identify underutilized circuits for potential decommissioning or repurposing based on sustained low usage metrics.
  • Model the impact of new applications (e.g., video conferencing) on LAN and WAN capacity using traffic simulation tools.
  • Implement QoS policies to prioritize real-time traffic and enforce rate limits on non-critical applications.
  • Optimize MPLS circuit utilization by redistributing traffic across multiple paths using TE tunnels or SD-WAN.
  • Validate capacity models against actual traffic growth to refine forecasting algorithms and assumptions.

Module 6: Security Integration and Network Access Control

  • Enforce 802.1X authentication on access switches and integrate with RADIUS servers for dynamic VLAN assignment.
  • Automatically quarantine devices with outdated OS patches or missing AV by integrating NAC with endpoint management systems.
  • Deploy micro-segmentation policies using group-based policies (e.g., Cisco SDA) to limit lateral movement.
  • Sync firewall rule change requests with network change management systems to ensure audit trail consistency.
  • Monitor for unauthorized DHCP servers by enabling DHCP snooping and logging violations on access switches.
  • Integrate threat intelligence feeds with perimeter firewalls to dynamically block known malicious IP addresses.

Module 7: Automation and Orchestration Frameworks

  • Develop Ansible playbooks to automate firmware upgrades across switch stacks with built-in health checks and rollback procedures.
  • Use Python scripts with Netmiko or NAPALM to extract interface statistics and generate custom reports not supported by commercial tools.
  • Orchestrate VLAN provisioning across switches, firewalls, and DHCP servers using workflow engines like StackStorm.
  • Implement REST API integrations between network controllers and cloud provisioning platforms (e.g., VMware, OpenStack).
  • Validate automation scripts in a lab environment that mirrors production topology and device versions.
  • Log all automated actions in a centralized audit repository with timestamps, user context, and change details.

Module 8: Governance, Compliance, and Reporting

  • Generate monthly compliance reports for SOX or HIPAA that detail configuration change history and access logs for network devices.
  • Enforce encryption of management traffic (SSH, HTTPS) and disable legacy protocols (Telnet, SNMPv1) across all devices.
  • Conduct quarterly access reviews to remove obsolete user accounts and privilege escalations from network systems.
  • Archive network configuration backups for seven years to meet regulatory retention requirements.
  • Validate backup integrity by performing periodic restore tests on critical routers and firewalls.
  • Report network availability SLAs to stakeholders using uptime data derived from monitoring systems and incident records.
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