H3C Technologies H3C S7500E Series Switches - Manual (Page 67)

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Enabling FEC
Forward Error Correction (FEC) can implement downlink error correction on the OLT and uplink error
correction on the ONU to lower the bit error rate and extend the optical transmission distance. The
packets enabled with FEC carry error correction codes. Therefore, the actual uplink bandwidth of the
ONU will be less than that configured.
Follow these steps to enable FEC:
To do... Use the command... Remarks
Enter system view system-view —
Enter ONU port view interface onu interface-number —
Enable the FEC function forward-error-correction enable
Optional
Disabled by default
Configuring an ONU to Report Information to the OLT
When an ONU attached to an OLT encounters configuration changes or failures or is being debugged,
you can configure the ONU to report the specified types of information to the OLT.
Note that:
Because a large number of ONUs are attached to an OLT, enabling ONUs to report information to the
OLT may generate a large amount of traffic and thus cause congestion. Therefore, you are
recommended to select the reported information type as required.
Follow these steps to configure an ONU to report information to the OLT:
To do… Use the command… Remarks
Enter system view system-view —
Enter ONU port view interface onu interface-number —
Configure the ONU to report the
specified types of information to
the OLT
onu-event { debug | log | trap }
enable level severity
Optional
By default, an ONU reports no
information to its OLT.
Configuring Traffic Encryption
Complete this task to configure the encryption of the downlink traffic transmitted from the OLT to ONUs,
thereby protecting user information against illegal access.
Follow these steps to configure traffic encryption:
To do... Use the command... Remarks
Enter system view system-view —
Enter ONU port view interface onu interface-number —