Configuring Fec - H3C S7500X Series Interface Configuration Manual

With this feature enabled on an interface, when the interface goes down, the system enables link
flapping detection. During the link flapping detection interval, if the number of detected flaps reaches
or exceeds the link flapping detection threshold, the system shuts down the interface.
Configuration restrictions and guidelines
This feature takes effect only if it is configured in both the system view and interface view.
The dampening, link-delay, and port link-flap protect enable commands are mutually exclusive
on an Ethernet interface.
To bring up an interface that has been shut down by link flapping protection, execute the undo
shutdown command.
In the display interface command output, the Link-Flap DOWN value of the Current state field
indicates that the interface has been shut down by link flapping protection.
Configuration procedure
To enable link flapping protection on an Ethernet interface:
Step
1. Enter system view.
2. Enable link flapping
protection globally.
3. Enter Ethernet interface
view.
4. Enable link flapping
protection on the Ethernet
interface.

Configuring FEC

About FEC
The forward error correction (FEC) feature corrects packet errors to improve transmission quality. It
attaches correction information to a packet at the sending end, and corrects error codes generated
during transmission at the receiving end based on the correction information. You can set the FEC
mode as needed.
Restrictions and guidelines
This feature is supported only on 100-GE interfaces.
A 100-GE interface connected through a copper cable or installed with a 40-Gbps transceiver
module does not support FEC. If FEC has been configured on the interface, use the undo port fec
mode command to restore the default.
When the FEC mode is set to auto on an interface, the actual FEC mode of the interface depends on
the model of the transceiver module installed. To view the actual FEC mode, see the FEC mode field
in the display interface command output.
Make sure you set the same FEC mode for both interfaces of a link.
Procedure
Step
1. Enter system view.
2. Enter Ethernet interface
view.
Command
system-view
link-flap protect enable
interface interface-type
interface-number
port link-flap protect enable
[ |
interval interval threshold
] *
threshold
Command
system-view
interface interface-type
interface-number
11
Remarks
N/A
By default, link flapping protection
is disabled globally.
N/A
By default, link flapping protection
is disabled on an Ethernet
interface.
Remarks
N/A
N/A