fec mode base-r

Function

The fec mode base-r command enables the Base-R FEC function on an interface.

The fec mode none command disables the Base-R FEC function on an interface.

The undo fec mode command restores the default Base-R FEC configuration on an interface.

By default, the medium on a 25GE interface determines whether the Base-R FEC function is enabled on the interface.

The S5732-H24UM2CC, S5732-H48UM2CC, and S7Y08000 cards support this command.

This command is supported when the interface working mode of the S7X08000 card is set to 25GE using the set card port-config-mode 25g-port enable command.

Format

fec mode { base-r | none }

undo fec mode [ base-r | none ]

Parameters

Parameter	Description	Value
base-r	Enables the Base-R FEC function.	-
none	Disables the Base-R FEC function.	-

Views

25GE interface view, port group view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

Base-R FEC is a bit error correction technology that adds correction information to data packets at the transmit end, and corrects bit errors generated during data packet transmission at the receive end based on the correction information. You can enable the Base-R FEC function to improve the signal quality.

You can run the display interface command in any view or run the display this interface command in the interface view to check whether the FEC function is enabled on an interface based on the Fec field in the command output.

Prerequisites

You can run this command on an interface only when the following conditions are met:

Auto-negotiation is disabled on the interface.
The interface is not a stack member interface.

Precautions

In V200R019C10 and later versions, ensure that the FEC status on both ends of a link is the same. If the Base-R FEC function is enabled on one end, this function also needs to be enabled on the other end to ensure that the Base-R FEC status on both ends of the link is the same.
The FEC function is mutually exclusive with auto-negotiation and the port mode ge command. If FEC has been configured, the FEC configuration will be automatically deleted when auto-negotiation is enabled or the port mode ge command is run.
When 25GE interfaces are interconnected, you are advised to enable FEC on both ends of the link to reduce the transmission bit error rate of the physical link. Otherwise, error packets may be generated.

Example

# Enable the Base-R FEC function on an interface.

<HUAWEI> system-view
[HUAWEI] interface 25ge 0/0/1
[HUAWEI-25GE0/0/1] fec mode base-r