Troubleshooting guide

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Release Notes for Cisco ONS 15454 Release 7.0.2
OL-11368-01
New Features and Functionality
• 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_MP_10E_C and MXP_MP_10E_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).
• High level provisioning support—The cards are initially provisioned using Cisco MetroPlanner
software. Subsequently, the card can be monitored and provisioned using CTC software.
• Link monitoring and management—The cards use standard OC-48 OH (overhead) bytes to monitor
and manage incoming interfaces. The cards pass the incoming SDH/SONET data stream and its
overhead bytes transparently.
• Control of layered SONET/SDH transport overhead—The cards are provisionable to terminate
regenerator section overhead. This is used to eliminate forwarding of unneeded layer overhead. It
can help reduce the number of alarms and help isolate faults in the network.
• Automatic timing source synchronization—The MXP_MP_10E_C and MXP_MP_10E_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 manages multiplex section alarm indication signal (MS-AIS) insertion.
• Full tunablility across the band—The cards are tunable across the full C band (MXP_2.5G_10E_C)
or full L band (MXP_MP_10E_L), thus eliminating the need to use different versions of each card
to provide tunability across specific wavelengths in a band.
Client Interfaces
The MXP_2.5G_10E_C and MXP_2.5G_10E_C cards provide four intermediate- or short-range
OC-48/STM-16 ports per card on the client side. Both SR-1 or IR-1 optics can be supported and the ports
use SFP connectors. The client interfaces use four wavelengths in the 1310-nm, ITU 100-MHz-spaced,
channel grid.
DWDM Interface
The MXP_2.5G_10E_C and MXP_2.5G_10E_L cards serve as OTN multiplexers, transparently
mapping four OC-48 channels asynchronously to ODU1 into one 10-Gbps trunk. The DWDM trunk is
tunable for transmission over the entire C band (MXP_2.5G_10E_C) or over the entire L band
(MXP_2.5G_10E_L) on the ITU 50-GHz spaced channel grid.