Troubleshooting guide

34
Release Notes for Cisco ONS 15454 Release 7.0.2
OL-11368-01
New Features and Functionality
The MXP_MR_10DME-C and MXP_MR_10DME-L cards feature a 1550-nm laser for the trunk/line
port and a 1310-nm or 850-nm laser (depending on the SFP) for the client ports. The cards contain eight
12.5 degree downward tilt SFP modules for the client interfaces. For optical termination, each SFP uses
two LC connectors, which are labeled TX and RX on the faceplate. The trunk port is a dual-LC connector
with a 45 degree downward angle.
Key Features
The MXP_MR_10DME-C and MXP_MR_10DME-L cards have the following high level features:
• Onboard E-FEC processor—The processor supports both standard RS (specified in ITU-T G.709)
and E-FEC, which allows an improved gain on trunk interfaces with a resultant extension of the
transmission range on these interfaces. The E-FEC functionality increases the correction capability
of the transponder to improve performance, allowing operation at a lower OSNR compared to the
standard RS (237,255) correction algorithm. A new BCH algorithm implemented in E-FEC allows
recovery of an input BER up to 1E-3.
• Pluggable client interface optic modules—The MXP_MR_10DME-C and MXP_MR_10DME-L
cards have modular interfaces. Two types of optics modules can be plugged into the card. These
include an OC-48/STM 16 SR-1 interface with a 7 km nominal range (for short range and
intra-office applications) and an IR-1 interface with a range up to 40 km. SR-1 is defined in
Telcordia GR-253-CORE and in I-16 (ITU-T G.957). IR-1 is defined in Telcordia GR-253-CORE
and in S-16-1 (ITU-T G.957).
• Y-cable protection—Supports y-cable protection between the same card type only, on ports with the
same port number and signal rate.
• High level provisioning support—The cards are initially provisioned using Cisco MetroPlanner
software. Subsequently, the card can be monitored and provisioned using CTC software.
• Automatic laser shutdown (ALS), a safety mechanism used in the event of a fiber cut.
• Link monitoring and management—The cards can use either G.709 or SONET OC-192 overhead
bytes to monitor and manage incoming trunk interfaces.
• Automatic timing source synchronization—The MXP_MR_10DME-C and MXP_MR_10DME-L
cards normally synchronize from the TCC2/TCC2P card. If for some reason, such as maintenance
or upgrade activity, the TCC2/TCC2P is not available, the cards automatically synchronize to one
of the input client interface clocks.
• Configurable squelching policy—The cards can be configured to squelch the client interface output
if there is LOS at the DWDM receiver or if there is a remote fault. In the event of a remote fault, the
card can either squelch the laser or send an error code order set.
• The cards are tunable across the full C band (MXP_MR_10DME-C) or full L band
(MXP_MR_10DME-L), thus eliminating the need to use different versions of each card to provide
tunability across specific wavelengths in a band. For the specific wavelengths for each band, see the
Cisco ONS 15454 DWDM Installation and Operations Guide.
TXP_MR_10E_C and TXP_MR_10E_L Multirate Transponder Cards
The 10-Gbps Transponder-100-GHz-Tunable (TXP_MR_10E_C and TXP_MR_10E_L) cards are
multirate transponders for the ONS 15454 platform. They processes one 10-Gbps signal (client side) into
one 10-Gbps, 100-GHz DWDM signal (trunk side). The TXP_MR_10E_C is tunable over the entire set
of C-band wavelength channels (82 channels spaced at 50 GHz on the ITU grid). The TXP_MR_10E_L
is tunable over the entire set of L-band wavelength channels (80 channels spaced at 50 GHz on the ITU
grid) and is particularly well suited for use in networks that employ dispersion shifted (DS) fiber or
SMF-28 single-mode fiber.