Dell Force10 MXL Blade MXL 10/40GbE Switch IO Module FTOS Command Line Referen - Page 166

www.dell.com | support.dell.com pfc link-delay Configure the link delay used to pause specified priority traffic. Syntax pfc link-delay value To remove the link delay, use the no pfc link-delay command. Parameters value Valid values (in quanta) are 712-65535. One quantum is equal to a 512-bit transmission. Defaults 45556 quantum Command Modes DCB INPUT POLICY Command History Usage Information Version 8.3.16.1 Introduced on MXL 10/40GbE Switch IO Module The minimum link delay should be greater than the round-trip transmission time required by a peer to honor a PFC pause frame multiplied by the number of PFC-enabled ingress ports. Related Commands dcb-input Create a DCB input policy. pfc mode on Enable the PFC configuration on the port so that the priorities are included in DCBX negotiation with peer PFC devices. Syntax pfc mode on To disable the PFC configuration, use the no pfc mode on command. Defaults PFC mode is on. Command Modes DCB INPUT POLICY Command History Version 8.3.16.1 Introduced on MXL 10/40GbE Switch IO Module Usage Information By applying a DCB input policy with PFC enabled, you enable PFC operation on ingress port traffic. To achieve complete lossless handling of traffic, you must also enable PFC on all DCB egress ports or configure the dot1p priority-queue assignment of PFC priorities to lossless queues (see pfc no-drop queues). To disable PFC operation on an interface, enter the no pfc mode on command in DCB input policy configuration mode. PFC is enabled and disabled as global DCB operation is enabled (dcb-enable) or disabled (no dcb-enable). PFC and link-level flow control cannot be enabled at the same time on an interface. Related Commands dcb-input Create a DCB input policy. 166 | Data Center Bridging