Brocade Multi-Service IronWare QoS and Traffic Management Configuration Guide (Supporting R05.6.00) - Manual (Page 172)

158 Multi-Service IronWare QoS and Traffic Management Configuration Guide
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QoS commands affected by priority queues
4
The following example displays when the qos scheduler weighted command is configured using 4
queues.
Brocade(config-ethe-1/1)#qos scheduler weighted 7 6 5 4 3 2 11
Current max TM queues is 4 - weights “7”, “6”, “5”, “4” for priority 7-4 will not
have any effect.
The following example displays when the qos scheduler mixed command is configured using 4
queues.
Brocade(config-ethe-1/1)#qos scheduler mixed 4 3 2 1 1
Current max TM queues is 4 - weights “4”, “3”, “2” for queues 4-2 will not have
any effect.
The following table displays how traffic scheduling for Strict Priority-based Scheduling and
Weighted-based Scheduling is configured differently between 8 and 4 queues:
Error messages for CPU copy queue
and traffic manager statistics
The following error messages are displayed for CPU copy queue and traffic manager statistics when
the incorrect queues are configured.
CPU copy queue
When system-init max-tm-queues 4 command is configured, the rl-cpu-copy command displays a
warning message when the user specifies a priority 4-7.
Example
Brocade(config)# rl-cpu-copy priority 4 1000000
Warn: current max TM queues is 4-configuration of priority 4-7 will not have any
effect.
Traffic manager statistics
When system-init max-tm-queues 4 command is configured, the show tm-voq-stat command will
only take a priority 0-3. An error message is displayed when an invalid priority range is enabled.
Example
Brocade#show tm-voq-stat src_port eth 9/1 dst_port ethernet 2/3 5
Error: priority range 0 to 3.
NOTE
The show tm-voq-stat command will print statistics for 4 queues, instead of 8. The output from the
TM Q statistics is available only if the src card type is a 48x1GC module or 8x10G module.
TABLE 45 Strict v.s. weighted queues
8 queues (current) 4 queues (new)
Strict 7,6,5 3,2
Weighted 4,3,2,1,0 1,0