Software Defined Networking (SDN)

3.

SDN Controller Architecture and Implementation

3.1.

Controller Roles and Responsibilities

3.1.1.

Global Network View Maintenance

3.1.1.1.

Topology Discovery

3.1.1.2.

Link State Monitoring

3.1.1.3.

Device Inventory Management

3.1.1.4.

Network State Synchronization

3.1.2.

Policy Enforcement

3.1.2.1.

Access Control Implementation

3.1.2.2.

Quality of Service Management

3.1.2.3.

Security Policy Application

3.1.2.4.

Compliance Monitoring

3.1.3.

Traffic Engineering

3.1.3.1.

Path Computation

3.1.3.2.

3.1.3.3.

Congestion Management

3.1.3.4.

Bandwidth Allocation

3.1.4.

Network State Management

3.1.4.1.

Event Processing

3.1.4.2.

State Consistency

3.1.4.3.

Transaction Management

3.1.4.4.

Rollback Mechanisms

3.2.

Controller Architecture Models

3.2.1.

Centralized Controller Architecture

3.2.1.1.

Single Point of Control

3.2.1.2.

Simplified Management

3.2.1.3.

Scalability Limitations

3.2.1.4.

Single Point of Failure

3.2.2.

Distributed Controller Architecture

3.2.2.1.

Horizontal Scaling

3.2.2.2.

Fault Tolerance

3.2.2.3.

State Distribution

3.2.2.4.

Coordination Challenges

3.2.3.

Hierarchical Controller Models

3.2.3.1.

Multi-Level Control Structure

3.2.3.2.

Domain-Based Partitioning

3.2.3.3.

Scalability Benefits

3.2.3.4.

Management Complexity

3.2.4.

Federated Controller Models

3.2.4.1.

Peer-to-Peer Architecture

3.2.4.2.

Inter-Domain Coordination

3.2.4.3.

Autonomy Preservation

3.2.4.4.

Protocol Requirements

3.3.

Controller Platform Implementations

3.3.1.

3.3.1.1.

Modular Architecture

3.3.1.2.

Plugin Framework

3.3.1.3.

Supported Protocols

3.3.1.4.

Application Development

3.3.2.

3.3.2.1.

Distributed Design

3.3.2.2.

High Availability Features

3.3.2.3.

Carrier-Grade Requirements

3.3.2.4.

Service Provider Focus

3.3.3.

3.3.3.1.

Python-Based Framework

3.3.3.2.

Component Architecture

3.3.3.3.

Application Development

3.3.3.4.

Educational Use

3.3.4.

Floodlight Controller

3.3.4.1.

Java-Based Platform

3.3.4.2.

3.3.4.3.

3.3.4.4.

Enterprise Features

3.3.5.

3.3.5.1.

Model-Driven Architecture

3.3.5.2.

YANG Data Models

3.3.5.3.

Plugin Ecosystem

3.3.5.4.

Industry Adoption

3.4.

Controller Design Considerations

3.4.1.

Scalability Requirements

3.4.1.1.

Network Size Limitations

3.4.1.2.

Performance Bottlenecks

3.4.1.3.

Horizontal Scaling Strategies

3.4.1.4.

Load Distribution

3.4.2.

Reliability and Availability

3.4.2.1.

Redundancy Mechanisms

3.4.2.2.

Failover Procedures

3.4.2.3.

State Backup and Recovery

3.4.2.4.

Health Monitoring

3.4.3.

Performance Optimization

3.4.3.1.

Latency Minimization

3.4.3.2.

Throughput Maximization

3.4.3.3.

Event Processing Efficiency

3.4.3.4.

Resource Utilization

3.4.4.

Security Considerations

3.4.4.1.

Access Control Mechanisms

3.4.4.2.

Authentication and Authorization

3.4.4.3.

Secure Communication

3.4.4.4.

Attack Surface Minimization

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2. SDN Architecture and Core Concepts

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4. Data Plane and Forwarding Infrastructure