Brocade Multi-Service IronWare QoS and Traffic Management Configuration Guide (Supporting R05.6.00) - Manual (Page 145)

Multi-Service IronWare QoS and Traffic Management Configuration Guide 131
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Egress port and priority based rate shaping
4
NOTE
The egress rate shaping burst size for a port and priority-based shaper is 3072 bytes.
To set the capacity for priority 2 traffic on a 10 Gbps port to the incremental capacity over 2 Gbps,
use the following command.
Brocade(config)# interface ethernet 2/2
Brocade(config-if-e10000-2/2)# qos shaper priority 2 2000000000
Syntax: [no] qos shaper priority priority-level rate
The priority-level variable specifies the priority that you want to set rate shaping for on the port
being configured.
The rate variable sets the rate you want to set for the priority. The rate is set in bps.
Multicast queue size, flow control, rate shaping and egress buffer
threshold
There are four internal priorities for multicast or broadcast traffic. These four priorities are mapped
from the device’s eight internal priorities as described in
Table 33
The internal forwarding priority of a multicast or broadcast packet is determined from the packet’s
IEEE 802.1p priority, incoming port priority or IP ToS or DSCP as described in the
“Default QoS
mappings” on page 79. Four multicast queue types (0 to 3) are used for multicast internal priorities
0 to 3 respectively.
NOTE
Instead of ACL priority, use VLAN or port priority to prioritize multicast traffic.
Configuring multicast queue size
The following example configures a 2 MByte queue size for queue 0.
Brocade(config)# qos multicast-queue-type 0 max-queue-size 2048
Syntax: [no] qos multicast-queue-type queue-number max-queue-size queue-size
The queue-number variable specifies the queue that you want to configure a maximum size for.
Possible values are 0 - 3.
The queue-size variable specifies size in KBytes that you want to set as the maximum value for the
specified multicast queue. Possible values are 1 - 32768 KBytes. The default queue size is 1
Mbyte.
This command is applied per device and takes effect on all Traffic Managers within the configured
device.
TABLE 33 Mapping between multicast or broadcast and internal forwarding priorities
Internal
Forwarding
Priority 0,1 2,3 4,5 6,7
Multicast
Internal Priority 0 1 2 3