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C
HAPTER
11
| Class of Service
Layer 2 Queue Settings
– 245 –
C
OMMAND
U
SAGE
◆
Strict priority requires all traffic in a higher priority queue to be
processed before lower priority queues are serviced.
◆
WRR queuing specifies a relative weight for each queue. WRR uses a
predefined relative weight for each queue that determines the
percentage of service time the switch services each queue before
moving on to the next queue. This prevents the head-of-line blocking
that can occur with strict priority queuing.
◆
If Strict and WRR mode is selected, a combination of strict service is
used for the high priority queues and weighted service for the
remaining queues. The queues assigned to use strict priority should be
specified using the Strict Mode field parameter.
◆
A weight can be assigned to each of the weighted queues (and thereby
to the corresponding traffic priorities). This weight sets the frequency
at which each queue is polled for service, and subsequently affects the
response time for software applications assigned a specific priority
value.
Service time is shared at the egress ports by defining scheduling
weights for WRR, or one of the queuing modes that use a combination
of strict and weighted queuing.
◆
The specified queue mode applies to all interfaces.
◆
Packets of 1588 bytes always use the highest priority queue.
P
ARAMETERS
These parameters are displayed:
◆
Queue Mode
■
Strict
– Services the egress queues in sequential order,
transmitting all traffic in the higher priority queues before servicing
lower priority queues. This ensures that the highest priority packets
are always serviced first, ahead of all other traffic.
■
WRR
– Weighted Round-Robin shares bandwidth at the egress
ports by using scheduling weights, and servicing each queue in a
round-robin fashion. (This is the default setting.)
■
Strict and WRR
– Uses strict priority on the high-priority queues
and WRR on the remaining queues.
◆
Queue ID
– The ID of the priority queue. (Range: 0-7)
◆
Strict Mode
– If “Strict and WRR” mode is selected, then a
combination of strict service is used for the high priority queues and
weighted service for the remaining queues. Use this parameter to
specify the queues assigned to use strict priority. (Default: Disabled)
Содержание ECS4810-12M Layer 2
Страница 1: ...Management Guide www edge core com ECS4810 12M Layer 2 Gigabit Ethernet Switch...
Страница 2: ......
Страница 4: ......
Страница 6: ...ABOUT THIS GUIDE 6...
Страница 54: ...SECTION I Getting Started 54...
Страница 64: ...CHAPTER 1 Introduction System Defaults 64...
Страница 82: ...CHAPTER 2 Initial Switch Configuration Managing System Files 82...
Страница 84: ...SECTION II Web Configuration 84...
Страница 102: ...CHAPTER 3 Using the Web Interface Navigating the Web Browser Interface 102...
Страница 206: ...CHAPTER 6 VLAN Configuration Configuring VLAN Mirroring 206...
Страница 256: ...CHAPTER 11 Class of Service Layer 3 4 Priority Settings 256...
Страница 378: ...CHAPTER 14 Security Measures DHCP Snooping 378...
Страница 520: ...CHAPTER 16 IP Configuration Setting the Switch s IP Address IP Version 6 520...
Страница 528: ...CHAPTER 17 IP Services Displaying the DNS Cache 528...
Страница 586: ...CHAPTER 19 Using the Command Line Interface CLI Command Groups 586...
Страница 676: ...CHAPTER 22 SNMP Commands 676...
Страница 684: ...CHAPTER 23 Remote Monitoring Commands 684...
Страница 816: ...CHAPTER 27 Access Control Lists ACL Information 816...
Страница 866: ...CHAPTER 30 Port Mirroring Commands RSPAN Mirroring Commands 866...
Страница 883: ...CHAPTER 32 Automatic Traffic Control Commands 883 Trap Traffic Release Disabled Disabled Console...
Страница 884: ...CHAPTER 32 Automatic Traffic Control Commands 884...
Страница 890: ...CHAPTER 33 Address Table Commands 890...
Страница 986: ...CHAPTER 37 Class of Service Commands Priority Commands Layer 3 and 4 986...
Страница 1006: ...CHAPTER 38 Quality of Service Commands 1006...
Страница 1068: ...CHAPTER 39 Multicast Filtering Commands Multicast VLAN Registration 1068...
Страница 1092: ...CHAPTER 40 LLDP Commands 1092...
Страница 1134: ...CHAPTER 41 CFM Commands 1134...
Страница 1154: ...CHAPTER 43 Domain Name Service Commands 1154...
Страница 1160: ...CHAPTER 44 DHCP Commands DHCP Client 1160...
Страница 1194: ...CHAPTER 45 IP Interface Commands IPv6 Interface 1194...
Страница 1196: ...SECTION IV Appendices 1196...
Страница 1201: ...APPENDIX A Software Specifications Management Information Bases 1201 Trap RFC 1215 UDP MIB RFC 2013...
Страница 1202: ...APPENDIX A Software Specifications Management Information Bases 1202...
Страница 1224: ...COMMAND LIST 1224...
Страница 1234: ...INDEX 1234...
Страница 1235: ......
Страница 1236: ...ECS4810 12M E072011 ST R01 149100000142A...