Dell N1100-ON, Reference Manual

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Data Center Technology Commands
1130
Data Center Bridging Commands
Dell EMC Networking N4000 Series Switches
NOTE: Enhanced Transmission Selection commands are only supported on N4000 series
switches. CLI commands and Dell OpenManage Switch Administrator pages are
not available for other switch models.
Data Center Bridging Exchange Protocol
The Data Center Bridging Exchange Protocol (DCBX) is used by DCB
devices to exchange configuration information with directly connected peers.
The protocol is also used to detect misconfiguration of the peer DCB devices
and, optionally, for configuration of peer DCB devices.
DCBX is expected to be deployed in support of lossless operation for FCoE or
iSCSI traffic. In these scenarios, all network elements are DCBX-enabled
(DCBX is enabled end-to-end).
The Dell EMC Networking implementation of the DCBX protocol supports
the propagation of configuration information for the following features:
1 Enhanced Transmission Selection (ETS)
2 Priority-based Flow Control (PFC)
3 Application Priorities
The features listed above use DCBX to send and receive device configuration
and capability information and configuration details to peer DCBX devices.
The PFC and ETS information exchange is discussed in Priority Flow
Control Commands and Enhanced Transmission Selection . Application
Priority information is captured from the configuration source and
propagated to other auto-configuration peers by the DCBX component.
When iSCSI is enabled on an operationally active PFC port, the application
priority information is supplemented with the configured iSCSI priority.
Enhanced Transmission Selection
NOTE: Enhanced Transmission Selection commands are only supported on N4000 series
switches. CLI commands and Dell OpenManage Switch Administrator pages are
not available for other switch models.