- RAD Data Communications TDMoIP Gateway Installation and Operation Manual
Table Of Contents
- Contents
- Introduction
- Installation
- Operation
- Introduction
- Front Panel Controls, Connectors, and Indicators
- Operating Instructions
- Getting Started
- Menu Operations
- Configuring System Parameters
- Configuring IPmux-16
- Troubleshooting and Diagnostics
- Boot Sequence for Downloading Software
- SNMP Management
- Telnet
- TFTP Download Procedures
- DC Power Supply Connection – CBL-DC-3WL/F
Chapter 1 Introduction IPmux-16 Installation and Operation Manual
1-10 Functional Description
Table 1-1. Ethernet Frame Structure
Field length (bytes) Field
7 Preamble
1 SFD
6 Destination MAC Address
6 Source MAC Address
2 Type
1 Vers/HLEN
1 Service Type
2 Total Length
2 Identification
1 Flags/Fragment Offset (most)
1 Fragment Offset (least)
1 Time to Live
1 Protocol
2 Header Checksum
4 Source IP Address
4 Destination IP Address
2 UDP Source Port
2 UDP Destination Port
2 UDP Message Length
2 UDP Checksum
...
Payload
4 CRC
MAC
Layer
IP Layer
MAC
Layer
UDP
Layer
Data
Layer
LLC
Layer
IEEE 802.1p&q VLAN Tagging
(additional 4 bytes if enabled)
Note: The UDP source port
field is used to transfer a
destination bundle number.