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Packet Diagram (v<MERMAID_RELEASE_VERSION>+)
Introduction
A packet diagram is a visual representation used to illustrate the structure and contents of a network packet. Network packets are the fundamental units of data transferred over a network.
Usage
This diagram type is particularly useful for network engineers, educators, and students who require a clear and concise way to represent the structure of network packets.
Syntax
packet-beta
start: "Block name" %% Single-bit block
start-end: "Block name" %% Multi-bit blocks
... More Fields ...
Examples
---
title: "TCP Packet"
---
packet-beta
0-15: "Source Port"
16-31: "Destination Port"
32-63: "Sequence Number"
64-95: "Acknowledgment Number"
96-99: "Data Offset"
100-105: "Reserved"
106: "URG"
107: "ACK"
108: "PSH"
109: "RST"
110: "SYN"
111: "FIN"
112-127: "Window"
128-143: "Checksum"
144-159: "Urgent Pointer"
160-191: "(Options and Padding)"
192-255: "Data (variable length)"
---
title: "TCP Packet"
---
packet-beta
0-15: "Source Port"
16-31: "Destination Port"
32-63: "Sequence Number"
64-95: "Acknowledgment Number"
96-99: "Data Offset"
100-105: "Reserved"
106: "URG"
107: "ACK"
108: "PSH"
109: "RST"
110: "SYN"
111: "FIN"
112-127: "Window"
128-143: "Checksum"
144-159: "Urgent Pointer"
160-191: "(Options and Padding)"
192-255: "Data (variable length)"
packet-beta
title UDP Packet
0-15: "Source Port"
16-31: "Destination Port"
32-47: "Length"
48-63: "Checksum"
64-95: "Data (variable length)"
packet-beta
title UDP Packet
0-15: "Source Port"
16-31: "Destination Port"
32-47: "Length"
48-63: "Checksum"
64-95: "Data (variable length)"
Details of Syntax
- Ranges: Each line after the title represents a different field in the packet. The range (e.g.,
0-15) indicates the bit positions in the packet. - Field Description: A brief description of what the field represents, enclosed in quotes.
Configuration
Please refer to the configuration guide for details.