Dell S6000 FTOS 9.0(2.0) Command Line Reference Guide for the System - Page 323
dcb-policy output
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• Link-level flow control can be enabled on the interface. To delete the input policy, you must first disable link-level flow control. PFC is then automatically enabled on the interface because an interface is by default PFC-enabled. • PFC still allows you to configure lossless queues on a port to ensure no-drop handling of lossless traffic. When you apply an input policy to an interface, an error message is displayed if: • The PFC dot1p priorities result in more than two lossless port queues globally on the switch. • Link-level flow control is already enabled. PFC and link-level flow control cannot be enabled at the same time on an interface. In a switch stack, you must configure all stacked ports with the same PFC configuration. A DCB input policy for PFC applied to an interface may become invalid if the dot1p-queue mapping is reconfigured. This situation occurs when the new dot1p-queue assignment exceeds the maximum number (2) of lossless queues supported globally on the switch. In this case, all PFC configurations received from PFC-enabled peers are removed and re-synchronized with the peer devices. Traffic may be interrupted when you reconfigure PFC no-drop priorities in an input policy or re-apply the policy to an interface. Related Commands dcb-input Create a DCB input policy. dcb-policy output S6000 Apply the output policy with the ETS configuration to an egress interface. Syntax dcb-policy output policy-name To delete the output policy, use the no dcb-policy output command. Parameters policy name Enter the output policy name. Defaults none Command Modes INTERFACE Command History Version 9.0.2.0 Version 8.3.16.1 Introduced on the S6000. Introduced on MXL 10/40GbE Switch IO Module Usage Information When you apply an ETS output policy to on interface, ETS-configured scheduling and bandwidth allocation take precedence over any configured settings in QoS output policies. To remove an ETS output policy from an interface, enter the no dcb-policy output policy-name command. ETS is enabled by default with the default ETS configuration applied (all dot1p priorities in the same group with equal bandwidth allocation). Related Commands dcb-output Create a DCB output policy. Data Center Bridging (DCB) | 323