netbox-interface-name-rules 1.1.0

NetBox plugin for automatic interface renaming when modules are installed

NetBox Interface Name Rules Plugin

Automatic interface renaming when modules are installed into NetBox device bays.

What it does

When a module (transceiver, line card, converter) is installed into a module bay, NetBox creates interfaces using position-based naming from the module type template. This often produces incorrect names — e.g., Interface 1 instead of et-0/0/4.

This plugin hooks into Django's post_save signal on the Module model to automatically apply renaming rules based on configurable templates.

Features

• Signal-driven — rules fire automatically on module install, no manual step needed
• Template variables — {slot}, {bay_position}, {bay_position_num}, {base}, {channel}, etc.
• Arithmetic expressions — {8 + ({parent_bay_position} - 1) * 2 + {sfp_slot}}
• Breakout support — create multiple channel interfaces from a single port (e.g., QSFP+ 4x10G)
• Scoping — rules can be scoped to specific device types, parent module types, or be universal
• Bulk import/export — YAML-based rule management via the UI or API

Supported scenarios

Scenario	Example
Converter offset	GLC-T in CVR-X2-SFP → GigabitEthernet3/10
Breakout channels	QSFP-4X10G-LR → et-0/0/4:0 through et-0/0/4:3
Platform naming	QSFP-100G-LR4 on ACX7024 → et-0/0/{bay_position}
UfiSpace breakout	QSFP-100G on S9610 → swp{bay_position_num}s{channel}

Installation

pip install netbox-interface-name-rules

Add to configuration.py:

PLUGINS = ['netbox_interface_name_rules']

Compatibility

• NetBox ≥ 4.2.0
• Python ≥ 3.12

License

Apache 2.0

Contributing

See CONTRIBUTING.md for how to submit code or interface name rules.

Community-contributed rules for various vendors are in the contrib/ directory.