Dell Brocade G620 Brocade 8.0.1 Fabric OS Command Reference - Page 727

portCfgNonDfe portCfgNonDfe Enables or disables non-Decision Feedback Equalization (DFE) mode on 8 Gbps Fibre Channel links. Synopsis portcfgnondfe --enable [slot/]port[-port] portcfgnondfe --disable [slot/]port[-port] portcfgnondfe --show [slot/]port[-port] portcfgnondfe --help Description Use this command to enable or disable non-DFE mode on a specified port or on a range of ports, or to display the configuration and state. Active receiver DFE uses sophisticated algorithms to automatically adjust the receiver to compensate for signal distortions. If enabled, this command disables the active receiver DFE and instead uses a fixed receiver equalization. The enabled mode is further indicated by the suffix of "Static" in the --show option. If the non-DFE enabled port is connected to a port that does not require fixed receiver equalization, CRC errors may be detected on the port and the link may toggle. By default, non-DFE mode is disabled, which means that automatic receiver adjustment through DFE is activated. Even if disabled, non-DFE is still automatically activated if both of the following conditions are met: • Port speed is 8G or N8; and • The received fillword is IDLE. The disabled mode is further indicated by the suffix of "Auto" in the --show option. If non-DFE is already enabled on the ports, enabling non-DFE has no effect. If a range of ports is specified, some of which are already in the requested configuration, a notification is generated, and no action is taken for those ports only. All other ports in the specified range are updated. Enabling or disabling non-DFE is disruptive to traffic. Auto non-DFE mode works in both AN and fixed 8 Gbps speeds. When used with the --show option, the command displays the following information for the specified ports: Port The port index number. 8G Non-DFE Configured Displays ON (Static) if non-DFE is enabled on the port. Displays OFF (Auto) if the feature is disabled (default). 8G Non-DFE State Displays Active if non-DFE is activated on the port. Displays Inactive if non-DFE is not activated. Use the portCfgShow command to display the non-DFE configuration along with other port parameters. Brocade Fabric OS Command Reference 703 53-1004112-02