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Appendix
A.9
Basics of prioritizing the data
traffic
A.9.3 VLAN tagging
For the VLAN and prioritizing functions, the IEEE 802.1Q standard provides
for integrating a VLAN tag into the MAC data frame. The VLAN tag consists
of 4 bytes and is located between the source address field ("Source Address
Field") and the type field ("Length / Type Field").
7
1
6
6
4
2
42-1500 Octets
4
t
min. 64, max. 1522 Octets
Figure 15: Ethernet data packet with tag
UM Configuration GECKO
136
Release 1.0 03/2015
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