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Traffic control
136
8.4 Prioritization
Basic - L3P
Release 3.1 06/07
8.4.2 Tagging
The VLAN tag is integrated into the MAC data frame for the VLAN and prio-
ritization functions in accordance with the IEEE 802.1 Q standard. The VLAN
tag consists of 4 Bytes. It is inserted between the source address field and
the type field.
With data packets with VLAN tag, the Switch evaluates
D
the priority information at all times, and
D
the VLAN information, if VLANs have been set up.
Data packets whose VLAN tags contain priority information but no VLAN
information (VLAN ID = 0) are known as “Priority Tagged Frames”.
Note:
Network logs and redundancy mechanisms use the highest priority
classes 3 (RS20/30/40, MS20/30, MACH 1000, OCTOPUS) and 7 (Power
MICE, MACH 4000). You therefore select other priority classes for application
data.
Entered
priority
Priority class
(default)
IEEE 802.1D traffic type
0
2
Best Effort (default)
1
0
Background
2
1
Standard
3
3
Excellent Effort (business critical)
4
4
Controlled load
(streaming multimedia)
5
5
Video, less than 100 millisconds of latency and jitter
6
6
Voice; less than 10 milliseconds of latency and jitter
7
7
Network Control reserved traffic
Table 9: Assignment of the priorities listed in the tag to the four priority classes
Содержание MACH 4000 Series
Страница 8: ...Contents 8 Basic L3P Release 3 1 06 07 Appendix C Index 231...
Страница 12: ...Key 12 Basic L3P Release 3 1 06 07 Hub A random computer Configuration computer Server...
Страница 14: ...Introduction 14 Basic L3P Release 3 1 06 07...
Страница 50: ...Entering the IP parameters 50 2 9 Faulty Device Replacement Basic L3P Release 3 1 06 07...
Страница 60: ...Loading saving settings 60 3 2 Saving settings Basic L3P Release 3 1 06 07...
Страница 72: ...Configuring ports 72 Basic L3P Release 3 1 06 07 Fig 20 Power over Ethernet dialog...
Страница 102: ...Protection from unauthorized access 102 6 6 Access Control Lists ACL Basic L3P Release 3 1 06 07...
Страница 120: ...Synchronizing the System Time of the 120 7 4 Interaction PTP and SNTP Basic L3P Release 3 1 06 07...
Страница 132: ...Traffic control 132 8 2 Multicast application Basic L3P Release 3 1 06 07 Fig 35 IGMP dialog...
Страница 160: ...Traffic control 160 8 6 VLANs Basic L3P Release 3 1 06 07 Fig 46 Assigning a VLAN any name and saving it...
Страница 162: ...Traffic control 162 8 6 VLANs Basic L3P Release 3 1 06 07 Fig 48 Saving the VLAN configuration...
Страница 179: ...Operation Diagnostics Basic L3P Release 3 1 06 07 9 4 Port status indication 179 The port is in autonegotiation mode...
Страница 181: ...Operation Diagnostics Basic L3P Release 3 1 06 07 9 5 Event counter on port level 181 Fig 56 Port statistic table...
Страница 195: ...Setting up the configuration Basic L3P Release 3 1 06 07 195 Apendix A Setting up the configuration environment...
Страница 217: ...General Information Basic L3P Release 3 1 06 07 217 Appendix B General Information...
Страница 234: ...Index 234 Basic L3P Release 3 1 06 07...
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