OLT2406 User’s Guide
188
C
HAPTER
23
Queuing Method
23.1 Queuing Method Overview
This chapter introduces the queuing methods supported.
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.
23.1.1 What You Can Do
Use the
Queuing Method
screen (
) set priorities for the queues of the OLT. This
distributes bandwidth across the different traffic queues.
23.1.2 What You Need to Know
Queuing algorithms allow switches to maintain separate queues for packets from each individual
source or flow and prevent a source from monopolizing the bandwidth.
Strictly Priority Queuing
Strictly Priority Queuing (SPQ) services queues based on priority only. As traffic comes into the OLT, 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. SPQ does not
automatically adapt to changing network requirements.
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.
23.2 Configuring Queuing
Use this screen to set priorities for the queues of the OLT. This distributes bandwidth across the different
traffic queues.
Summary of Contents for OLT2406
Page 4: ...Document Conventions OLT2406 User s Guide 4 Desktop Laptop Switch IP Phone Smart T V...
Page 32: ...Table of Contents OLT2406 User s Guide 32 Index 758...
Page 33: ...33 PART I Introduction and Hardware Installation...
Page 63: ...63 PART II Web Configurator...
Page 179: ...Chapter 21 Classifier OLT2406 User s Guide 179 Figure 112 Classifier Example...
Page 182: ...Chapter 22 Policy Rule OLT2406 User s Guide 182 Figure 113 Advanced Application Policy Rule...
Page 186: ...Chapter 22 Policy Rule OLT2406 User s Guide 186 Figure 114 Policy Example...
Page 248: ...Chapter 28 Loop Guard OLT2406 User s Guide 248 Figure 151 Advanced Application Loop Guard...
Page 393: ...393 PART III CLI Commands...
Page 581: ...Chapter 78 VoIP OLT2406 User s Guide 581...
Page 725: ...725 PART IV Troubleshooting Specifications Appendices and Index...
