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Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
April 2006
Chapter 16 Card Reference
16.8.5 MXP_2.5G_10E Card
Figure 16-65
MXP_2.5G_10E Block Diagram
16.8.5.3 Client Interfaces
The MXP_2.5G_10E provides 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.
16.8.5.4 DWDM Interface
The MXP_MP_10E serves as an OTN multiplexer, transparently mapping four OC-48 channels
asynchronously to ODU1 into one 10-Gbps trunk. The DWDM trunk is tunable for transmission over
four wavelengths in the 1550-nm, ITU 100-GHz spaced channel grid.
Caution
You must use a 20-dB fiber attenuator (15 to 25 dB) when working with the MXP_MP_10E card in a
loopback on the trunk port. Do not use direct fiber loopbacks with the MXP_MP_10E card. Using direct
fiber loopbacks causes irreparable damage to the MXP_MP_10E card.
16.8.5.5 Multiplexing Function
The muxponder is an integral part of the optically transparent ROADM network in which data payload
channels and wavelengths are processed exclusively at the optical level without electrical to optical
(E-O) conversion. The key function of MXP_MP_10E is to multiplex 4 OC-48/STM16 signals onto one
ITU-T G.709 OTU2 optical signal (DWDM transmission). The multiplexing mechanism allows the
signal to be terminated at a far-end node by another MXP_2.5G_10E card.
Optical transparency on the muxponder is configured using OTUx and ODUx OH bytes. The
ITU-T G.709 specification defines OH byte formats that are used to configure, set, and monitor frame
alignment, FEC mode, section monitoring, tandem connection monitoring, and optical transparency.
uP bus
Serial bus
Processor
Onboard
Flash
memory
RAM
Optical
transceiver
115357
FEC/
Wrapper
Processor
(G.709 FEC)
E-FEC
DWDM
(trunk)
10GE
(10GBASE-LR)
SR-1
(short reach/intra-office)
or
IR-1
(intermediate range)
SFP client
optics modules
Optical
transceiver
Optical
transceiver
Optical
transceiver
Optical
transceiver
B
a
c
k
p
l
a
n
e
Summary of Contents for ONS 15454 DWDM
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