Brocade Communications Systems Network Advisor 12.3.0, Руководство пользователя

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622 Brocade Network Advisor SAN User Manual
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QoS configuration
16
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Precedence - Enter a value from 1 through 100. This number determines the map’s
priority.
•
Priority Flow Control check box - Check to enable priority-based flow control on individual
priority groups.
•
CoS - Click the CoS cell to launch the Edit CoS dialog box, where you can select and assign
one or more priorities (PG ID 15.0 through 15.7).
All of the eight CoS values (0-7) must be used in a DCB map, separated with a comma and
a space. Duplicate CoS values in two or more priority groups are not allowed.
NOTE
You can only edit CoS fields that are displayed with a green tick mark.
% Bandwidth (optional) - While in the Edit CoS dialog box, enter a bandwidth value for
priority group (PG) IDs 15.0 through 15.7. You must map each CoS to at least one of the PG
IDs.
Note the following points:
•
You cannot define a bandwidth percentage for strict priorities (PG ID 15.0-15.7). The
total bandwidth percentage for PG ID 15.0 through 15.7 must equal 0.
•
If you set a CoS value to one or more of the PG IDs 0-7, you must also enter a non-zero
bandwidth percentage. The total bandwidth percentage must equal 100.
•
For PG IDs 0-7 that do not have an assigned CoS value or PFC enabled, the bandwidth
percentage must be 0.
6. Click the right arrow button to add the map to the DCB Maps list.
If a DCB map exists with the same name, a validation dialog box launches and you are asked if
you want to overwrite the map.
7. Click OK.
8. When you have finished the configuration, click OK to launch the Deploy to Products dialog
box.
Editing a DCB map
1. Select Configure > DCB.
The DCB Configuration dialog box displays, showing the status of all DCB-related hardware and
functions.
2. Select a switch, and click Edit.
3. Click the QoS tab on the Edit Switch dialog box.
The QoS dialog box displays.
4. Select a DCB map from the DCB Maps list and click the left arrow button to load its values in
the left pane. The fields are now editable.
5. Keep the same DCB map name and modify the following values, as required. Refer to Table 61
for an example of priority group configuration.
•
Name - Enter a name to identify the DCB map.