Dell Force10 MXL Blade MXL 10/40GbE Switch IO Module FTOS Command Line Referen - Page 162

www.dell.com | support.dell.com Usage If you configure PFC on a 40GbE port, count the 40GbE port as four PFC-enabled ports in the pfc-port Information number you enter in the command syntax. To achieve lossless PFC operation, the PFC port count and queue number used for the reserved buffer size that is created must be greater than or equal to the buffer size required for PFC-enabled ports and lossless queues on the switch. You must reload the stack or a specified stack unit (use the reload command in EXEC Privilege mode) for the PFC buffer configuration to take effect. Related Commands dcb stack-unit all pfc-buffering pfc-port-count pfc-queues Configure the PFC buffer for all switches in the stack. dcbx port-role Configure the DCBX port role used by the interface to exchange DCB information. Syntax dcbx port-role {config-source | auto-downstream | auto-upstream | manual} To remove DCBX port role, use the no dcbx port-role {config-source | auto-downstream | auto-upstream | manual} command. Parameters config-source | auto-downstream | auto-upstream | manual Enter the DCBX port role, where: • config-source: configures the port to serve as the configuration source on the switch. • auto-upstream: configures the port to receive a peer configuration. The configuration source is elected from auto-upstream ports. • auto-downstream: configures the port to accept the internally propagated DCB configuration from a configuration source. • manual: configures the port to operate only on administer-configured DCB parameters. The port does not accept a DCB configuration received form a peer or a local configuration source. Defaults Manual. Command Modes PROTOCOL LLDP Command History Version 8.3.16.1 Introduced on MXL 10/40GbE Switch IO Module Usage Information DCBX requires that you enable LLDP to advertise DCBX TLVs to peers. Configure DCBX operation at the INTERFACE level on a switch. To verify the DCBX configuration on a port, use the show interface dcbx detail command. 162 | Data Center Bridging