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Cisco ONS 15454 Series Multiservice Provisioning Platforms

Field Notice: ONS 15454-MRP-L1-XXX and 15454-MR-1-XXX Multi-rate Transponder Card SFP's Diagnostic Lock-up


Revised April 19, 2004

December 05, 2003


Products Affected

Product

Top Assembly

Random #

Part Number

Rev.

15454-SFP-OC48-IR=

10-1422

01

SFP - OC-48/STM-16 - 1310nm IR - SM - LC. Problem is fixed in 10-1975-01

15454-SFP-GEFC-SX=

10-1833

01

SFP - GE/1G-FC/2G-FC - 850nm - MM - LC. Problem is fixed in revision 02

15454-SFP-GE+-LX=

10-1832

01

SFP - GE/1G-FC/2G-FC/HDTV - 1310nm - SM - LC Problem is fixed in revision 02

Problem Description

Digital diagnostic of the above listed units may lock-up reporting constant value for laser current, RX and TX power even in the case that the physical value would change.

This lock-up does not affect traffic.

The MDS9000 product line is not affected by this change

Background

The problem is caused by a memory device used inside the Cisco Small Form-factor Pluggable (SFP) module that, under particular timing conditions, enter a lock-up state in which the last PM value is continuously reported.

The probability of lock-up condition occurring under normal operating condition is very low.

Problem Symptoms

Reference to the tables below for detailed systems descriptions.

TX Power

Client to Trunk

Transition

Behavior of Unit in All Cases

From

To

Output power within specified operating range

No Input Power (eg. Fiber Cut)

According to specification

Output power within specified operating range

Input power below specified operating range

No Alarms for TX POWER LOW but BER degradation

No output power

Input power withing specified operating range

Alarm of TX POWER LOW

RX Power

Trunk to Client

Transition

Behavior of Unit in All Cases

From

To

Input power within specified operating range

No output power (eg. Fiber cut)

According to specifications

No input power

Output power within specified range

Alarm of RX POWER LOW

Laser Bias Current

Trunk to Client

Transition

Behavior of Unit in All Cases

From

To

TX laser operating within specired operating range

RX laser below the specified operating range

No Alarms

Workaround/Solution

No workaround is available. In case of component failure and diagnostic information is required, SFP has to be replaced.

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:

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