eNSP Topology Skill

Generate eNSP (Enterprise Network Simulation Platform) topology files as native .topo files that can be opened directly in eNSP.

How to create a topology

1. Parse user's request to identify:
• Network devices (routers, switches, PCs, Cloud, etc.)
• Connections between devices
• Optional: text labels, area boxes

1. Generate UUIDs for each device using a valid UUID v4 format

1. Calculate layout coordinates for devices using auto-layout algorithm

1. Build the .topo XML following the format in references/topo-reference.md

1. Write the file to current directory using Write tool

1. Open the result - print the file path so user can open it in eNSP

Output format

Always output a .topo file. The user will open it in eNSP for simulation.

Example filenames:

• simple-network.topo
• ospf-topology.topo
• campus-network.topo

Device types supported

Routers

| Model | Description | Interface Config |

|-------|-------------|------------------|

| AR201 | Router | Ethernet x8 + Ethernet x1 |

| AR1220 | Router | 2GE + 8Ethernet |

| AR2220 | Router | GE x1 + GE x2 + Serial x2 |

| AR2240 | Router | GE x1 + GE x2 |

| AR3260 | Router | GE x1 + GE x2 |

| Router | Generic Router | Ethernet x2 + GE x4 + Serial x4 |

| NE40E | Enterprise Router | 10x Ethernet (slot format) |

| NE5000E | Core Router | 10x Ethernet (slot format) |

| NE9000 | Core Router | 10x Ethernet (slot format) |

| R250D | Router | GE x1 |

Switches

| Model | Description | Interface Config |

|-------|-------------|------------------|

| S3700 | Switch | Ethernet x22 + GE x2 |

| S5700 | Switch | 24GE |

| CE6800 | Data Center Switch | 20x GE (slot format) |

| CE12800 | Data Center Switch | 10x GE (slot format) |

| CX | Switch | 10x Ethernet (slot format) |

Firewalls

| Model | Description | Interface Config |

|-------|-------------|------------------|

| USG5500 | Firewall | GE x9 |

| USG6000V | Firewall | GE x1 (slot0) + GE x7 (slot1) |

Wireless

| Model | Description | Interface Config |

|-------|-------------|------------------|

| AC6005 | Wireless AC | 8GE |

| AC6605 | Wireless AC | 24GE |

| AP2050 | Wireless AP | 5GE |

| AP3030 | Wireless AP | 1GE |

| AP4030 | Wireless AP | 2GE |

| AP4050 | Wireless AP | 2GE |

| AP5030 | Wireless AP | 2GE |

| AP6050 | Wireless AP | 2GE |

| AP7030 | Wireless AP | 2GE |

| AP7050 | Wireless AP | 2GE |

| AP8030 | Wireless AP | 3GE |

| AP8130 | Wireless AP | 3GE |

| AP9131 | Wireless AP | 2GE |

| AD9430 | LTE Module | 28GE |

| STA | Wireless Station | Wireless |

| Cellphone | Mobile Device | Wireless |

Endpoints

| Model | Description | Interface Config |

|-------|-------------|------------------|

| PC | PC | 1GE |

| Laptop | Laptop | 1GE |

| Server | Server | 1Ethernet |

| Client | Client | 1Ethernet |

| MCS | Multicast Server | 1Ethernet |

| Cloud | Cloud/BNI | Ethernet interfaces |

| FRSW | Frame Relay Switch | Serial x16 |

| HUB | Ethernet HUB | Ethernet x16 |

Connection types

| Type | Description |

|------|-------------|

| Copper | Ethernet cable |

| Serial | Serial cable |

| Auto | Auto-detect |

Layout algorithm

Use a simple grid-based auto-layout:

Grid spacing: 200px horizontal, 150px vertical
Device size: ~80x60px
Start position: (100, 100)

For each row:
  - Place devices horizontally with 200px gap
  - Move to next row when reaching canvas width (~1200px)

Adjust positions based on device types and connections to create logical groupings.

Adding text labels (txttips)

Common labels for network diagrams:

• Loopback addresses: Loopback0:10.0.1.1/24
• Network segments: 10.0.12.0/24
• Area labels: Area0, Area1, AS 64512
• Device roles: Core Layer, Access Layer

Adding area boxes (shapes)

Use type="1" shapes with appropriate colors to group devices:

• Same area devices in one rectangle
• Different colors for different areas/zones

File naming

• Use lowercase with hyphens
• Descriptive name based on topology purpose
• End with .topo extension

Opening the result

After writing the file, print the absolute path:

Topology saved to: C:\path\to\topology.topo
Please open this file in eNSP to view and simulate.

XML format reference

Consult references/topo-reference.md for complete XML structure including:

• Device XML format with slots and interfaces
• Line XML format with interfacePair details
• Shape XML format for area boxes
• Txttip XML format for text annotations