Dell PowerConnect 8100 CLI Reference Guide - Page 869

40 Data Center Bridging Commands NOTE: Fiber Channel over Ethernet (FCoE) commands are only supported on the PC8024 and PC8024F switches. CLI commands and Dell OpenManage Switch Administrator pages are not available for other switch models. NOTE: Enhanced Transmission Selection commands are only supported on PC81xx 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 PowerConnect 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. Data Center Bridging Commands 869