Troubleshooting guide

Release Notes for Cisco ONS 15454 Release 7.0.2

OL-11368-01

New Features and Functionality

The MXP_MR_2.5G card features 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 card contains 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.

The MXPP_MR_2.5G card features a 1550-nm laser for the trunk/line port and a 1310-nm or 850-nm

laser (depending on the SFP) for the client port. The card contains 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. There are two trunk port connectors (one for working and one for

protect). Each is a dual-LC connector with a 45-degree downward angle.

Automatic Laser Shutdown

The ALS procedure is supported on both client and trunk interfaces. On the client interface, ALS is

compliant with ITU-T G.664 (6/99). On the data application and trunk interface, the switch on and off

pulse duration is greater than 60 seconds. The on and off pulse duration is user-configurable.

OPT-BST-L Optical Booster Card

The Optical Booster L-Band (OPT-BST-L) has a standard gain range of 8 to 20 dB in the controllable

gain tilt mode, and 20 to 27 dB in the uncontrolled gain tilt mode. The OPT-BST-L is designed to support

64 channels at 50-GHz channel spacing, but currently is limited to 32 channels at 100-GHz spacing. The

OPT-BST-L is an L-band DWDM EDFA with OSC add-and-drop capability. The card is particularly well

suited for use in networks that employ dispersion shifted (DS) fiber or SMF-28 single-mode fiber.

When an ONS 15454 has an OPT-BST-L installed, it is only necessary to have the OSCM to process the

OSC. You can install the OPT-BST-L in Slots 1 to 6 and 12 to 17. To control the gain tilt, the OPT-BST-L

is equipped with a built-in VOA.

Key Features

The OPT-BST-L features include:

• Fixed gain mode (with programmable tilt)

• True variable gain

• Fast transient suppression

• Nondistorting low-frequency transfer function

• Settable maximum output power

• Fixed output power mode (mode used during provisioning)

• ASE compensation in fixed gain mode

• Full monitoring and alarm handling with settable thresholds

• OSRI, which is a software feature capable (through CTC) of shutting down the optical output power

or reducing the power to a safe level (automatic power reduction)

• ALS, which is a safety mechanism used in the event of a fiber cut

Note The optical splitters each have a ratio of 1:99. The result is that the power at the MON TX and MON RX

ports is about 20 dB lower than the power at the COM TX and COM RX ports.