Dell Brocade G620 Brocade 8.0.1 Fabric OS Command Reference - Page 701

portCfgFec FEC via TTS Configured Displays OFF if TTS is disabled on the port (default). Displays ON if the FEC negotiation via TTS feature is enabled. FEC State The FEC state can be active or inactive. An active FEC state indicates that FEC is enabled and actually running. An inactive state can indicate two conditions: FEC is enabled, but not running due to some error condition (for example, FEC may not be enabled on both ends of the link). Or FEC is disabled and therefore inactive. Use the portCfgShow command to display the FEC configuration along with other port parameters. Use the islShow command to view interswitch link-level FEC configurations. Use the portErrshow and portStatShowhow commands to monitor data transmission errors. You should see a significant reduction in CRC errors on FEC-enabled links. Notes FEC is supported on the following links: • Between E_Ports on all 16 Gbps platforms running Fabric OS v7.0.0 or later. Both sides of the link must be configured with port speeds of 10 Gbps and 16 Gbps. • Between F_Ports and N_Ports in Access Gateway mode (requires Fabric OS v7.1.0 and later on the AG and the switch. • Between Brocade 16 Gbps capable HBAs (Catapult2) Host Bus Adapters and an F_Port. The HBA must be running v3.2 or later and the switch must be running Fabric OS v7.1.0. FEC is compatible with QoS, Credit Recovery, and Fabric-Assigned Port WWM (FA-PWWN). FEC is not supported on D_Ports configured with Dense Wavelength Division Multiplexing (DWDM). Starting from Fabric OS v7.3.0, the TTS mode is supported only for F_Ports. If a port initializes as an E_Port, it is disabled with a warning message and its peer port will be in "No_Light". status. The TTS mode is not supported for ICL ports, EX_Ports, D_Ports, SIM ports, Mirror ports, Software ASN, fixed 1 Gbps, fixed 2 Gbps, fixed 4 Gbps, or fixed 8 Gbps ports. The execution of this command is subject to Virtual Fabric restrictions that may be in place. Refer to "Using Fabric OS Commands" and "Command Availability" for details. Operands This command has the following operands: slot On bladed systems only, specifies the slot number of the ports to be configured, followed by a slash (/). port[-port] Specifies a port or a port range, relative to the slot number on bladed systems, for example, 5/17-29. Multiple port ranges are not supported with this command. --enable [-FEC] [-TTS] Enables FEC, FEC through TTS or both on the specified ports. Use the -FEC option to enable FEC only, use the -TTS option to enable TTS only, or use both -FEC and -TTS options together to enable FEC through TTS. Brocade Fabric OS Command Reference 677 53-1004112-02