Brocade TurboIron 24X Series Configuration Guide - Manual (Page 1082)

1048 Brocade TurboIron 24X Series Configuration Guide
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Scheduling
Syntax: [no] qos profile <queue> <percentage> <queue> <percentage> <queue> <percentage>
<queue> <percentage> <queue> <percentage> <queue> <percentage> <queue>
<percentage> <queue> <percentage>
Each <queue> parameter specifies the name of a queue. You can specify the queues in any order
on the command line, but you must specify each queue.
The <percentage> parameter specifies a number for the percentage of the device outbound
bandwidth that is allocated to the queue. QoS queues require a minimum bandwidth percentage of
3% for each priority. When jumbo frames are enabled, the minimum bandwidth requirement is 8%.
If these minimum values are not met, QoS may not be accurate.
Configuration notes
• The total of the percentages you enter must equal 100.
• Devices do not adjust the bandwidth percentages you enter.
Devices supports seven priorities instead of eight when sFlow is enabled. QoS queue 1 is reserved
for sFlow and not used by other packets. Any non-sFlow packets assigned to QoS queue 1 will be
directed to QoS queue 0.
Changing the bandwidth allocations of the hybrid WRR and SP queues
To change the default bandwidth percentages for the queues when the device is configured to use
the combined SP and WRR queuing mechanism, enter commands such as the following. Note that
this example uses the default queue names.
TurboIron(config)#qos profile qosp7 sp qosp6 sp qosp5 20 qosp4 16 qosp3 16 qosp2
16 qosp1 16 qosp0 16
Syntax: [no] qos profile <queue 7> sp <queue 6> sp | <percentage> <queue 5> <percentage>
<queue 4> <percentage> <queue 3> <percentage> <queue 2> <percentage> <queue 1>
<percentage> <queue 0> <percentage>]
Each <queue x> parameter specifies the name of a queue. You can specify the queues in any
order on the command line, but you must specify each queue. Note that <queue 7> supports strict
priority only, <queue 6> supports both strict priority and WRR queuing mechanisms, and queues 0
– 5 support the WRR queuing mechanism only.
The sp parameter configures strict priority as the queuing mechanism. Note that only <queue 7>
and <queue 6> support this method.
The <percentage> parameter configures WRR as the queuing mechanism and specifies the
percentage of the device outbound bandwidth allocated to the queue. The queues require a
minimum bandwidth percentage of 3% for each priority. When jumbo frames are enabled, the
minimum bandwidth requirement is 8%. If these minimum values are not met, QoS may not be
accurate.
TurboIron(config)#qos profile qosp7 25 qosp6 15 qosp5 12 qosp4 12 qosp3 10 qosp2
10 qosp1 10 qosp0 6
Profile qosp7 : Priority7 bandwidth requested 25% calculated 25%
Profile qosp6 : Priority6 bandwidth requested 15% calculated 15%
Profile qosp5 : Priority5 bandwidth requested 12% calculated 12%
Profile qosp4 : Priority4 bandwidth requested 12% calculated 12%
Profile qosp3 : Priority3 bandwidth requested 10% calculated 10%
Profile qosp2 : Priority2 bandwidth requested 10% calculated 10%
Profile qosp1 : Priority1 bandwidth requested 10% calculated 10%
Profile qosp0 : Priority0 bandwidth requested 6% calculated 6%