RAD Data comm TDMoIP Gateway IPmux-16 Spécifications télécharger pdf (Page 18)

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.

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 98 99

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