Datasheet

4-20
Cisco ONS 15454 SDH Reference Manual, R7.0
October 2008
Chapter 4 Optical Cards
4.9.2 OC48 LR/STM16 LH AS 1550 Card-Level Indicators
The OC48 LR/STM16 LH AS 1550 detects LOS, LOF, LOP, MS-AIS, and MS-FERF conditions. Refer
to the Cisco ONS 15454 SDH Troubleshooting Guide for a description of these conditions. The card also
counts section and line BIP errors.
4.9.2 OC48 LR/STM16 LH AS 1550 Card-Level Indicators
Table 4-10 describes the three card-level LED indicators on the OC48 LR/STM16 LH AS 1550 card.
4.9.3 OC48 LR/STM16 LH AS 1550 Port-Level Indicators
You can find the status of the OC48 LR/STM16 LH AS 1550 card ports using the LCD screen on the
ONS 15454 SDH fan-tray assembly. Use the LCD to view the status of any port or card slot; the screen
displays the number and severity of alarms for a given port or slot. Refer to the Cisco ONS 15454 SDH
Troubleshooting Guide for a complete description of the alarm messages.
4.10 OC48 ELR/STM16 EH 100 GHz Cards
Note For specifications, see the “A.6.9 OC48 ELR/STM16 EH 100 GHz Card Specifications” section on
page A-35.
Eighteen distinct STM-16 ITU 100-GHz DWDM cards comprise the ONS 15454 SDH DWDM channel
plan. This plan contains every second wavelength in the ITU grid for 100-GHz-spaced DWDM. Though
the ONS 15454 SDH only uses 200-GHz spacing, the cards work in 100-GHz-spaced nodes, as well.
Each OC48 ELR/STM16 EH 100 GHz card provides one SDH STM-16 port compliant with
ITU-T G.692, ITU-T G.707, ITU-T G.957, and ITU-T G.958. The interface operates at 2.488 Gbps over
a single-mode fiber span. Each card supports concatenated or nonconcatenated payloads at STM-1,
STM-4, or STM-16 signal levels on a per VC-4 basis.
Warning The laser is on when the optical card is booted. The port does not have to be in service for the laser
to be on.
Table 4-10 OC48 LR/STM16 LH AS 1550 Card-Level Indicators
Card-Level LED Description
Red FAIL LED The red FAIL LED indicates that the card processor is not ready. The FAIL
LED is on during reset and flashes during the boot process. Replace the card
if the red FAIL LED persists.
Green/Amber ACT LED The green ACT LED indicates that the card is carrying traffic or is
traffic-ready. The amber ACT LED indicates that the card is in standby mode
or is part of an active ring switch (MS-SPRing).
Amber SF LED The amber SF LED indicates a signal failure or condition such as LOS, LOF,
or high BERs on one or more card 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.