| Description | An object defining the FEC mode of operation of the
interface, and indicating its state. The modes defined in
this object are extensions to the FEC modes defined in
the dot3EponFecMode object.
When noFECEnabled(1), the interface does not enable FEC
mode.
When fecTxEnabled(2), the interface enables the FEC
transmit mode.
When fecRxEnabled(3), the interface enables the FEC
receive mode.
When fecTxRxEnabled(4), the interface enables the FEC
transmit and receive mode.
This object is applicable for an OLT and an ONU. At the
OLT, it has a distinct value for each virtual interface.
The FEC counters are referring to the receive path. The
FEC counters will stop when the FEC receive mode of the
interface is disabled, as defined by fecRxEnabled(3)
and fecTxRxEnabled(4) values.
The counters:
dot3EponFecPCSCodingViolation - not affected by FEC
mode.
dot3EponFecCorrectedBlocks - stops counting when
Rx_FEC is not enabled (noFecEnabled(1) and
fecTxEnabled(2)).
dot3EponFecUncorrectableBlocks - stops counting when
Rx_FEC is not enabled (noFecEnabled(1) and
fecTxEnabled(2)).
dot3EponFecBufferHeadCodingViolation - stops counting
when Rx_FEC is not enabled (noFecEnabled(1) and
fecTxEnabled(2)).
The objects:
dot3EponFecAbility - indicates the FEC ability and is
not affected by the FEC mode.
dot3EponFecMode - indicates the FEC mode for combined RX
and TX.
The write operation is not restricted in this document
and can be done at any time. Changing
dot3ExtPkgObjectFecEnabled state can lead to disabling
the Forward Error Correction on the respective interface,
which can lead to a degradation of the optical link, and
therefore may lead to an interruption of service for the
users connected to the respective EPON interface. |