Network Topology & Route Analysis Toolkit

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This toolkit is designed to transform raw network device data from vendors like Juniper, Cisco, and Fortinet into interactive, insightful visualizations and professional management reports.

🚀 Core Features

1. Smart Topology Visualization

• Multi-vendor Parsing: Supports parsing of Juniper OSPF output, Fortinet/Cisco OSPF tables, and standard LLDP neighbor tables.
• Automated Device Identification: Uses regex (regular expressions) to automatically categorize devices (e.g., Firewalls, Switches) and assign specific SVG icons based on naming conventions.
• Dynamic Layout Engine: Utilizes the vis.js ForceAtlas2 algorithm to calculate optimal spatial positioning, preventing node overlap and offering static, hierarchical, or physics-based views.

2. Recursive Route Analysis Engine

• LPM (Longest Prefix Match): Accurately simulates router behavior by finding the most specific route entry for a target IP within CIDR routing tables.
• Recursive Path Tracing: Simulates packet hops from a starting node until the packet reaches its destination, encounters a routing loop, or hits a "blackhole".
• ECMP Support: Identifies and displays all available branches when multiple Equal-Cost Multi-Path (ECMP) next-hops exist.

3. Asset & VLAN Auditing

• IP-MAC Correlation: Maps ARP data to port information to solve the common challenge of identifying the identity of a device on a specific interface.
• OUI Manufacturer Identification: Automatically detects hardware vendors (e.g., Apple, Cisco, VMware) using the first 6 characters of MAC addresses to help classify terminal devices.
• Automated Reporting: Flattens complex, nested JSON data into clean Excel (XLSX) or CSV reports with optimized column formatting for auditing.

🛠️ How It Works

1. Data Normalization: Extracts destination segments and next-hops via regex and standardizes MAC address formats for consistent global mapping.
2. Physics Simulation: Employs gravitational and spring forces to create natural network distributions that prevent visual clutter.
3. Visual Status Marking: Highlighting analyzed paths with dynamic "flow" effects and labeling each node with the specific route entry used for forwarding.
4. Persistence & Caching: Integrates with localStorage to remember node positions and settings, featuring an 8-hour cache expiry to balance performance and data accuracy.

💡 Use Cases

• Virtual Traceroute: Predict packet paths offline when devices are unreachable or ICMP traffic is blocked by intermediate firewalls.
• Datacenter Automation: Instantly generate physical connection maps by pasting show lldp neighbors text, replacing manual Visio drafting.
• Security & Asset Inventory: Identify unauthorized devices and audit virtualization environments (like VMware/Hyper-V) using OUI detection.
• Disaster Recovery (DR) Drills: Simulate node failures or routing weight changes to verify if traffic correctly shifts to backup paths.
• VLAN Migration Planning: Generate a comprehensive list of all devices on a specific VLAN to ensure no critical servers are missed during network migrations.

📊 Technical Specifications

• Core Engine: JavaScript, vis.js (Physics-based rendering).
• Data Models: JSON, CIDR-based routing, Regex-driven parsing.
• Export Formats: Interactive Web Interface, PNG images, CSV, and formatted Excel files.

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This toolkit bridges the gap between raw low-level data and high-value management information, serving as an ideal assistant for Network Engineers and NOC centers.