Dell S4048T, Configuration Manual

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Data Center Bridging (DCB)
Data center bridging (DCB) refers to a set of enhancements to Ethernet local area networks used in data
center environments, particularly with clustering and storage area networks.
Topics:
• Ethernet Enhancements in Data Center Bridging
• Enabling Data Center Bridging
• Data Center Bridging: Default Configuration
• Configuring Priority-Based Flow Control
• Configuring PFC in a DCB Map
• Applying a DCB Map on a Port
• Configuring PFC without a DCB Map
• Priority-Based Flow Control Using Dynamic Buffer Method
• Behavior of Tagged Packets
• Configuration Example for DSCP and PFC Priorities
• Using PFC to Manage Converged Ethernet Traffic
• Configure Enhanced Transmission Selection
• Hierarchical Scheduling in ETS Output Policies
• Using ETS to Manage Converged Ethernet Traffic
• Applying DCB Policies in a Switch Stack
• Configure a DCBx Operation
• Verifying the DCB Configuration
• QoS dot1p Traffic Classification and Queue Assignment
• Configuring the Dynamic Buffer Method
• Sample DCB Configuration
Ethernet Enhancements in Data Center
Bridging
The following section describes DCB.
The S4048–ON system supports loading two DCB_Config files: FCoE_DCB_Config and iSCSI_DCB_Config .
These files are located in the root directory flash:/CONFIG_TEMPLATE. After copying the configuration files
to the startup config and reloading the system.
The device supports the following DCB features:
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