MES-3528 User’s Guide
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Queuing Method
This chapter introduces the queuing methods supported.
22.1 Queuing Method Overview
Queuing is used to help solve performance degradation when there is network
congestion. Use the Queuing Method screen to configure queuing algorithms for
outgoing traffic. See also Priority Queue Assignment in Switch Setup and
802.1p Priority in Port Setup for related information.
Queuing algorithms allow switches to maintain separate queues for packets from
each individual source or flow and prevent a source from monopolizing the
bandwidth.
22.1.1 Strictly Priority Queuing
Strictly Priority Queuing (SPQ) services queues based on priority only. As traffic
comes into the Switch, traffic on the highest priority queue, Q7 is transmitted first.
When that queue empties, traffic on the next highest-priority queue, Q6 is
transmitted until Q6 empties, and then traffic is transmitted on Q5 and so on. If
higher priority queues never empty, then traffic on lower priority queues never
gets sent. SP does not automatically adapt to changing network requirements.
22.1.2 Weighted Fair Queuing
Weighted Fair Queuing is used to guarantee each queue's minimum bandwidth
based on its bandwidth weight (portion) (the number you configure in the Weight
field) when there is traffic congestion. WFQ is activated only when a port has more
traffic than it can handle. Queues with larger weights get more guaranteed
bandwidth than queues with smaller weights. This queuing mechanism is highly
efficient in that it divides any available bandwidth across the different traffic
queues. By default, the weight for Q0 is 1, for Q1 is 2, for Q2 is 3, and so on.
Guaranteed quantum is calculated as Queue Weight x 2048 bytes.
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Страница 8: ...Safety Warnings MES 3528 User s Guide 8 ...
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Страница 32: ...Chapter 2 Hardware Installation and Connection MES 3528 User s Guide 32 ...
Страница 42: ...Chapter 3 Hardware Overview MES 3528 User s Guide 42 ...
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Страница 60: ...Chapter 5 Initial Setup Example MES 3528 User s Guide 60 ...
Страница 76: ...Chapter 7 System Status and Port Statistics MES 3528 User s Guide 76 ...
Страница 88: ...Chapter 8 Basic Setting MES 3528 User s Guide 88 ...
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Страница 109: ...Chapter 9 VLAN MES 3528 User s Guide 109 Figure 57 Port Based VLAN Setup Port Isolation ...
Страница 114: ...Chapter 10 Static MAC Forward Setup MES 3528 User s Guide 114 ...
Страница 146: ...Chapter 14 Bandwidth Control MES 3528 User s Guide 146 ...
Страница 160: ...Chapter 17 Link Aggregation MES 3528 User s Guide 160 ...
Страница 168: ...Chapter 19 Port Security MES 3528 User s Guide 168 ...
Страница 180: ...Chapter 21 Policy Rule MES 3528 User s Guide 180 ...
Страница 192: ...Chapter 23 VLAN Stacking MES 3528 User s Guide 192 ...
Страница 231: ...Chapter 26 IP Source Guard MES 3528 User s Guide 231 Figure 120 DHCP Snooping ...
Страница 248: ...Chapter 26 IP Source Guard MES 3528 User s Guide 248 ...
Страница 257: ...257 PART IV IP Application Static Route 259 Differentiated Services 263 DHCP 267 ...
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Страница 262: ...Chapter 29 Static Route MES 3528 User s Guide 262 ...
Страница 274: ...Chapter 31 DHCP MES 3528 User s Guide 274 ...
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Страница 284: ...Chapter 32 Maintenance MES 3528 User s Guide 284 ...
Страница 306: ...Chapter 33 Access Control MES 3528 User s Guide 306 ...
Страница 312: ...Chapter 35 Syslog MES 3528 User s Guide 312 ...
Страница 320: ...Chapter 36 Cluster Management MES 3528 User s Guide 320 ...
Страница 324: ...Chapter 37 MAC Table MES 3528 User s Guide 324 ...
Страница 329: ...329 PART VI Troubleshooting Product Specifications Troubleshooting 331 Product Specifications 335 ...
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Страница 342: ...Chapter 41 Product Specifications MES 3528 User s Guide 342 ...
Страница 343: ...343 PART VII Appendices and Index Changing a Fuse 345 Common Services 347 Legal Information 351 Index 355 ...
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Страница 346: ...Appendix A Changing a Fuse MES 3528 User s Guide 346 ...
Страница 354: ...Appendix C Legal Information MES 3528 User s Guide 354 ...
Страница 364: ...Index MES 3528 User s Guide 364 ...