Configuration Guide User guide

FastIron Configuration Guide 1985
53-1002494-02
Configuring QoS mapping configuration
Changing the VLAN priority 802.1p to hardware
forwarding queue mappings
To map a VLAN priority to a different hardware forwarding queue, enter commands such as the
following at the global CONFIG level of the CLI.
[no] qos tagged-priority <num> <queue>
Syntax:
The <num> variable can be from 0 through 7 and specifies the VLAN priority.
The <queue> variable specifies the hardware forwarding queue to which you are reassigning the
priority.
The default queue names are as follows:
• qosp7
• qosp6
• qosp5
• qosp4
• qosp3
• qosp2
• qosp1
• qosp0
Following is an example of using this command.
Brocade(config)#qos tagged-priority 2 qosp0
Default scheduling configuration for the
SX-FI48GPP module
The default scheduling configuration for Weighted Round Robin (WRR), Strict Priority (SP), and
mixed WRR and SP mode for the eight QoS priority (qosp) queues mapped to the four hardware
queues is described in Table 344.
TABLE 344 Default configuration for 8 to 4 queues for the SX-FI48GPP module
Note that Table 344 includes values for default, non-jumbo mode WRR. The hardware queues are
calculated using default qosp values from Table 340 on page 1976 as follows:
• Front end queue 3= 75% (qosp7) + 7% (qosp6) = 82%
Hardware Queue Weighted Round
Robin (WRR)
mode
Mixed WRR and
SP
Strict Priority (SP)
mode
3 Weight 82% Strict Priority Strict Priority
2 Weight 6% Weight 40% Strict Priority
1 Weight 6% Weight 30% Strict Priority
0 Weight 6% Weight 30% Strict Priority