This repository contains a library to build packets in the MNA framework as introduced by the MPLS Working Group of the IETF, and a Wireshark dissector to visualize them.
In the future, our P4 implementation of the MNA framework will be added to this repository.
The provided libraries follow the current state of the MNA encoding draft for ISD, and the PSD encoding draft for PSD.
They do not represent a final implementation or solution, and may not be free of bugs.
Place the utils/wireshark/mna_wireshark.lua file in your Wireshark lua plugins folder, e.g., in /usr/lib/x86_64-linux-gnu/wireshark/plugins (from 'About Wireshark' --> 'Folders').
Note: This plugin replaces the MPLS dissector of Wireshark. It is intended for analysis and debugging of MNA traffic only.
The file utils/scapy/MNA.py contains a library for building MNA packets. See utils/scapy/send_mna_packet.py for examples using the MNA library and sending packets using the scapy library.
| LSE Label: 50, BoS: 0 |, 0x32e3f
| LSE Label: 4, BoS: 0 |, 0x4e40
| Initial opcode: 64, Scope: SELECT, NASL: 4 BoS: 0 |, 0x80000404
| Subsq. opcode: 64, NAL: 0 BoS: 0 |, 0x80000400
| Subsq. opcode: 64, NAL: 0 BoS: 0 |, 0x80000400
| Subsq. opcode: 64, NAL: 0 BoS: 0 |, 0x80000400
| Subsq. opcode: 64, NAL: 0 BoS: 0 |, 0x80000400
| LSE Label: 60, BoS: 0 |, 0x3ce3f
| LSE Label: 70, BoS: 0 |, 0x46e3f
| LSE Label: 4, BoS: 0 |, 0x4e40
| Initial opcode: 64, Scope: HBH, NASL: 4 BoS: 0 |, 0x80000a04
| Subsq. opcode: 64, NAL: 1 BoS: 0 |, 0x80000401
| Data entry BoS 0 |, 0x80000000
| Subsq. opcode: 64, NAL: 0 BoS: 0 |, 0x80000400
| Subsq. opcode: 64, NAL: 0 BoS: 0 |, 0x80000400
| LSE Label: 80, BoS: 0 |, 0x50e3f
| LSE Label: 90, BoS: 0 |, 0x5ae3f