Brocade Web Tools Administrators Guide (Supporting Fabric OS v7.3.0) - Manual (Page 249)

FCoE configuration tasks
There are several tasks related to FCoE configuration. The following list describes the high level tasks
in a suggested order:
• Quality of Service (QoS) configuration (optional)--If you intend to implement a specific QoS scheme
to prioritize data traffic, it is recommended that you finish your QoS configuration before you begin
port configuration. QoS values are referenced when you configure ports.
• LLDP-DCBX configuration (optional)--If you intend to implement DCBX, it is recommended that you
finish LLDP-DCBX configuration before you configure ports. LLDP-DCBX values are referenced
when you configure ports.
• DCB interface configuration (mandatory).
• Link Aggregation Group (LAG) configuration (mandatory)--Ports must be configured before they can
be placed into a LAG. The parameters applied to the LAG reflects on each port that is member of the
LAG.
• VLAN configuration (optional)--Port and LAG names are referenced in VLAN configuration, and must
be defined before you can successfully complete a VLAN configuration.
• Login group configuration (optional)--Login group configuration is not dependent on any of the
previous configurations. It can be done as a separate task.
Quality of Service configuration
As a general concept, Quality of Service (QoS) is a mechanism for classifying and scheduling data
traffic based on priority settings. QoS can be used to control traffic congestion, allocate bandwidth, and
carry data traffic with different characteristics over a common interface.
The following two configuration options are available:
• You can edit the DCB map. The DCB map defines priority and priority group tables that support
Enhanced Transmission Selection (ETS). ETS allows allocation of bandwidth to different traffic
classes. DCB maps also allow you to enable Priority Flow Control (PFC).
• You can create a traffic class map. A traffic class map can be used to map a specific class of traffic to
a specific Class of Service (CoS).
Editing the DCB map
The DCB map defines priority and priority group tables that support Enhanced Transmission Selection
(ETS). ETS allows bandwidth to be allocated based on priority settings through an exchange of priority
group tables.
To edit the DCB map, perform the following steps.
1. Select the DCB tab on the Switch Administration window.
2. Select the QoS tab.
3. Select the DCB Map tab.
4. Select the default DCB map, and click Edit.
The DCB Map Configuration dialog box displays.
5. Enter a precedence value in the Precedence field.
The value is specified as a number. The allowable range is 1 to 100. The default is 1.
FCoE configuration tasks
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