Fec And E-Fec Modes; Client-To-Trunk Mapping; Txp_Mr_10E Card-Level Indicators; Table 14-50 Txp_Mr_10E Card-Level Indicators - Cisco ONS 15454 DWDM Installation And Operation Manual

Chapter 14 Card Reference
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14.8.2.7 FEC and E-FEC Modes

As client side traffic passes through the TXP_MR_10E card, it can be digitally wrapped using FEC mode
error correction or E-FEC mode error correction (or no error correction at all). The FEC mode setting
provides a lower level of error detection and correction than the E-FEC mode setting of the card. As a
result, using E-FEC mode allows higher sensitivity (lower OSNR) with a lower bit error rate than FEC
mode. E-FEC enables longer distance trunk-side transmission than with FEC.
The E-FEC feature is one of three basic modes of FEC operation. FEC can be turned off, FEC can be
turned on, or E-FEC can be turned on to provide greater range and lower bit error rate. The default mode
is FEC on and E-FEC off. E-FEC is provisioned using CTC.
Because the transponder has no visibility into the data payload and detect circuits, a TXP_MR_10E card
Caution
does not display circuits under the card view.

14.8.2.8 Client-to-Trunk Mapping

A key feature of the TXP_MR_10E card is the ability to perform ODU2-to-OCh mapping, which allows
operators to provision data payloads in a standard way across 10-Gbps optical links.
Digital wrappers that define client side interfaces are called ODU2 (Optical Data Channel Unit 2)
entities in the ITU-T G.709. Digital wrappers that define trunk side interfaces are called OCh (Optical
Channels) in ITU-T G.709. ODU2 digital wrappers can include Generalized Multiprotocol Label
Switching (G-MPLS) signaling extensions to ITU-T G.709 (such as Least Significant Part (LSP) and
Generalized Payload Identifier (G-PID) values) to define client interfaces and payload protocols.

14.8.2.9 TXP_MR_10E Card-Level Indicators

Table 14-50

Table 14-50 TXP_MR_10E Card-Level Indicators

Card-Level LED
Red FAIL LED
ACT/STBY LED
Green (Active)
Amber (Standby)
Amber SF LED
December 2004
E-FEC: standard G.975.1 two orthogonally concatenated Bose-Chaudhuri-Hochquenghem (BCH)
super FEC code. This FEC scheme contains three parameterizations of the same scheme of two
orthogonally interleaved block codes (BCH). The constructed code is decoded iteratively to achieve
the expected performance.
lists the three card-level LEDs on the TXP_MR_10E card.
Description
The red FAIL LED indicates that the card's processor is not ready. This LED
is on during reset. The FAIL LED flashes during the boot process. Replace
the card if the red FAIL LED persists.
If the ACT/STBY LED is green, the card is operational (one or both ports
active) and ready to carry traffic. If the ACT/STBY LED is amber, the card
is operational and in standby (protect) mode.
The amber SF LED indicates a signal failure or condition such as LOS, LOF,
or high BERs on one or more of the card's ports. The amber SF LED is also
on if the transmit and receive fibers are incorrectly connected. If the fibers
are properly connected and the link is working, the light turns off.
Cisco ONS 15454 DWDM Installation and Operations Guide, R4.7
14.8.2 TXP_MR_10E Card
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