Brocade Communications Systems Converged Enhanced Ethernet 8000, Руководство администратора

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Converged Enhanced Ethernet Administrator’s Guide 119
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CEE map configuration
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DRAFT: BROCADE CONFIDENTIAL
2. Specify the schedule to use and the traffic class to bandwidth mapping.
switch(config)# qos queue scheduler strict-priority 4 dwrr 10 20 30 40
3. Enter the copy command to save the running-config file to the startup-config file.
switch(config)# do copy running-config startup-config
Multicast queue scheduling
The multicast traffic classes are numbered from 0 to 3; higher numbered traffic classes are
considered higher priority. A fixed mapping from multicast traffic class to equivalent unicast traffic
class is applied to select the queue scheduling behavior.
Table 28 presents the multicast traffic
class equivalence mapping applied.
Once the multicast traffic class equivalence mapping has been applied, then scheduling and any
scheduler configuration are inherited from the equivalent unicast traffic class. See
Table 27 on
page 118 for details on exact mapping equivalencies.
Unicast ingress and egress queueing utilizes a hybrid scheduler that simultaneously supports
SP+WRR service and multiple physical queues with the same service level. Multicast adds
additional multicast expansion queues. Since multicast traffic classes are equivalent to unicast
service levels, they're treated exactly as their equivalent unicast service policies.
Scheduling the QoS multicast queue
To schedule the QoS multicast queue, perform the following steps from privileged EXEC mode.
1. Enter global configuration mode.
switch# configure terminal
2. Specify the schedule to use and the traffic class to bandwidth mapping.
switch(config)# qos queue multicast scheduler dwrr 10 20 30 40
3. Enter the copy command to save the running-config file to the startup-config file.
switch(config)# do copy running-config startup-config
CEE map configuration
The CEE QoS covers frame classification, priority and traffic class (queue) mapping, congestion
control, and scheduling. Under the CEE Provisioning model all of these features are configured
utilizing two configuration tables, Priority Group Table and Priority Table.
TABLE 28 Multicast traffic class equivalence mapping
Multicast traffic class Equivalent unicast traffic class
3 6
2 4
1 2
0 0