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Class of Service Commands
4-245
4
queue mode
This command sets the queue mode to strict priority or Weighted Round-Robin
(WRR) for the class of service (CoS) priority queues. Use the
no
form to restore the
default value.
Syntax
queue mode
{
strict
|
wrr
}
no
queue mode
•
strict
- Services the egress queues in sequential order, transmitting all
traffic in the higher priority queues before servicing lower priority queues.
•
wrr
- Weighted Round-Robin shares bandwidth at the egress ports by using
scheduling weights 1, 2, 4, 8 for queues 0 - 3 respectively.
Default Setting
Weighted Round Robin
Command Mode
Global Configuration
Command Usage
• Strict priority requires all traffic in a higher priority queue to be processed
before lower priority queues are serviced.
• WRR uses a relative weight for each queue which determines the number of
packets the switch transmits every time it services a queue before moving on
to the next queue. Thus, a queue weighted 8 will be allowed to transmit up to
8 packets, after which the next lower priority queue will be serviced according
to it’s weighting. This prevents the head-of-line blocking that can occur with
strict priority queuing.
Example
The following example sets the queue mode to strict priority service mode:
switchport priority default
This command sets a priority for incoming untagged frames. Use the
no
form to
restore the default value.
Syntax
switchport priority default
default-priority-id
no switchport priority default
default-priority-id
- The priority number for untagged ingress traffic.
The priority is a number from 0 to 7. Seven is the highest priority.
Console(config)#queue mode strict
Console(config)#
Summary of Contents for 8126PL2-F
Page 1: ...MANAGEMENT GUIDE ta TigerSwitchTM 10 100 1000 L2 Lite SMB PoE Gigabit Switch SMC8126PL2 F ...
Page 2: ......
Page 6: ...vi ...
Page 22: ...Contents xxii ...
Page 26: ...Tables xxvi ...
Page 48: ...Initial Configuration 2 10 2 ...
Page 117: ...User Authentication 3 69 3 Web Click Security AAA Summary Figure 3 43 AAA Accounting Summary ...
Page 590: ...Command Line Interface 4 302 4 ...
Page 604: ...Glossary Glossary 8 ...
Page 612: ...Index 8 Index ...
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Page 614: ...149100000023A R01 SMC8126PL2 F ...