Dell PowerSwitch S4128F-ON EMC SmartFabric OS10 User Guide Release 10.5.1 - Page 1462

DCBX configuration notes ● DCBX is a prerequisite for using DCB features, such as PFC and ETS, to exchange link-level configurations in a converged network. ● DCBX, when deployed in topologies, enables lossless operation for FCoE or iSCSI traffic. In these scenarios, all network devices in the topology must have DCBX-enabled. ● DCBX uses LLDP to advertise and automatically negotiate the administrative state and PFC or ETS configuration with directly connected DCB peers. DCBX cannot run if LLDP is disabled on an interface. Enable LLDP on all the DCBX port. For more information about LLDP, see Link Layer Discovery Protocol. ● By default, DCBX is disabled globally. Enable DCBX globally on a switch to activate the exchange of DCBX TLV messages with PFC, ETS, and iSCSI configurations. ● By default, DCBX is enabled on the physical interfaces except on the management interface. ● You can manually reconfigure DCBX settings on an individual interface. For example, you can disable DCBX on an interface using the no lldp tlv-select dcbxp command or change the DCBX version using the dcbx version command. ● For DCBX to be operational, DCBX must be enabled both globally and on the interface. If the show lldp dcbx interface command returns the message DCBX feature not enabled, DCBX is not enabled at both levels. 1462 Converged data center services