AT-GS950/16PS Switch Web Interface User’s Guide
177
Egress Queue vs
Packet Priority
Mapping
Each port has four egress queues, labeled Q0, Q1, Q2, and Q3. Q0 is the
lowest priority queue and Q3 is the highest. A packet in a high priority
egress queue is typically transmitted sooner than a packet in a low priority
queue.Table 3 lists the default mappings between the eight CoS priority
levels and the four egress queues of a switch port.
You can change these mappings. For example, you might decide that
packets with a priority of 6 and 7 need to be handled by egress queue Q3
and packets with a priority of 2 and 3 should be handled in Q1. The result
is shown in Table 4.
Table 3. Default Mappings Priority Levels to Priority Queues
IEEE 802.1p
Priority Level
Port Priority
Queue
0
Q0
1
Q0
2
Q0
3
Q0
4
Q0
5
Q0
6
Q0
7
Q0
Table 4. Customized Mappings Priority Levels to Priority Queues
IEEE 802.1p
Priority Level
Port Priority
Queue
0
Q0
1
Q0
2
Q1
3
Q1
4
Q2
5
Q2
6
Q3
7
Q3
Содержание AT-GS950/16PS
Страница 12: ...Figures 12...
Страница 14: ...List of Tables 14...
Страница 18: ...Preface 18...
Страница 20: ...20...
Страница 52: ...Chapter 2 System Configuration 52...
Страница 54: ...54...
Страница 92: ...Chapter 5 Multiple Spanning Tree Protocol 92...
Страница 102: ...Chapter 6 Static Port Trunking 102...
Страница 118: ...Chapter 8 Port Mirroring 118...
Страница 140: ...Chapter 11 IGMP Snooping 140...
Страница 174: ...Chapter 14 GVRP 174...
Страница 186: ...Chapter 15 Quality of Service and Cost of Service 186...
Страница 188: ...188...
Страница 216: ...Chapter 17 SNMPv3 216...
Страница 244: ...Chapter 18 Access Control Configuration 244...
Страница 282: ...Chapter 21 Security 282...
Страница 288: ...Chapter 22 Power Over Ethernet PoE 288...
Страница 289: ...289 Chapter 23...
Страница 310: ...Chapter 24 LLDP 310...
Страница 322: ...322...
Страница 334: ...Chapter 26 Software Configuration Updates 334...
Страница 346: ...Chapter 28 Rebooting the AT GS950 16PS 346...
Страница 368: ...Appendix A MSTP Overview 368...
Страница 386: ...Appendix B AT GS950 16PS Default Parameters 386...