Field Notice: *Expired* FN - 16712 - End of Life OC-48 Line Cards Do Not Recover from Power Cycle with Receive Signal Present

Revised October 23, 2006
November 20, 2001

---

NOTICE:

THIS FIELD NOTICE HAS BEEN ARCHIVED AND IS NO LONGER MAINTAINED OR UPDATED BY CISCO.

THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE, WARRANTY OR SUPPORT. USE OF THE INFORMATION ON THIS FIELD NOTICE OR MATERIALS LINKED FROM THIS FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.

---

Products Affected

Product	Top Assembly		Printed Circuit Assembly		Comments
	Part Number	Rev.	Part Number	Rev.
OC48/SRP-SR-SC(=)	800-05619-03	All	All	All	Not having deviation D012224
OC48E/POS-SR-SC(=)	800-16886-01	All	All	All	Not having deviation D012224
OC48/SRP-SR-PAIR=	800-05619003	All	All	All	Not having deviation D012224

Problem Description

Some OC-48 line cards will not properly detect receive optical carrier when power cycled.

Background

If a line card is powered up with a receive optical signal already present, it may experience this problem. If a line card is powered up and an optical signal is subsequently applied, this problem will not occur. An in-service product that experiences power cycling is at risk for this problem.

Problem Symptoms

The line card fails to detect receive optical carrier, which renders the line card inoperative.

Workaround/Solution

Replace the affected hardware. Return materials authorizations (RMAs) must be coded as shown below.

Service Level: Mfg New - 3rd Business Day NON BILLABLE
Failure Class: Administrative Request
Failure Code: Field Notice Alert

RMAs will be shipped next business day, standard delivery only.

How To Identify Hardware Levels

Using the Command Line Interface (CLI)

Use the show diag slot command to view the line card deviation and serial number. In the example shown below, the line card was built to deviation D012224 and has a top assembly number (TAN) of 800-5619-01. This line card is within the affected serial number range, but is guaranteed not to exhibit this problem because it was manufactured under deviation D012224.

SLOT 0 (RP/LC 0 ): 1 Port SONET based SRP OC-48c/STM-16 Single Mode/SR SC-SC cr MAIN: type 58, 800-5619-01 rev A0 dev12224 HW config: 0x04 SW key: 00-00-00 PCA: 73-4039-06 rev A0 ver 6 HW version 1.1 S/N SDK04421GBJ MBUS: Embedded Agent Test hist: 0x00 RMA#: 00-00-00 RMA hist: 0x00 DIAG: Test count: 0x00000000 Test results: 0x00000000 FRU: Linecard/Module: OC48/SRP-SR-SC= L3 Engine: 2 - Backbone OC48 (2.5 Gbps) MBUS Agent Software version 01.46 (RAM) (ROM version is 02.00) Using CAN Bus A ROM Monitor version 10.03 Fabric Downloader version used 04.09 (ROM version is 02.01) Primary clock is CSC 1 Board is disabled Board State is Administratively Down (ADMN DOWN) Insertion time: 00:00:05 (4w4d ago)

Physical Inspection

The line card serial number, deviation number, (TAN) and printed circuit board (PCB) assembly number can all be found on stickers that are located on the PCB. Refer to the picture below.

Note: Photo below is not of an OC48E/POS or OC48/SRP line card.

Note: Stickers may not always be in this exact location on the PCB.

Other Considerations

The OC48E/POS-SR-FC(=) product is not affected by this problem because it was never manufactured with the defective optical module.

See also Field Notice 13833 for other products affected by this problem but with different recommend workarounds.

How to Identify Optics Modules

Not all products within the affected serial number range listed in the "Products Affected" section above are susceptible to the symptom described in this field notice. For customers who wish to be more selective in identifying and replacing potentially affected line cards the following information is provided.

All types of OC48E/POS line cards that have optics modules with a silver cover are not susceptible to the symptom described in this field notice. The photo below shows an example of this type of optics module. A yellow rectangle has been added to the photo to identify the optics module.

Note: No OC48E/SRP line cards use this type of optics module.

Some optics modules with a black case are susceptible to the symptom described in this field notice. This type of optics module was used on both the OC48E/POS and OC48/SRP line cards. The photo below shows an example of this type of optics module on an OC48E/POS line card. A yellow rectangle has been added to the photo to identify the optics module.

Optics modules having a black case (as shown above) that may be susceptible to the symptom described in this field notice have serial numbers that fall within the serial number range shown below. Modules with serial numbers that are not listed are not susceptible.

Serial Numbers
01311 to 01416
01840 to 02068
02087 to 02119
02125 to 02149
02161 to 02313
02530 to 02533
02591 to 02634
03395 to 03551
03568 to 03835
07001 to 07350
07352 to 08824
09097 to 09199

The optical module serial number can be obtained by examining the white sticker on the top of the optics module. The photo below shows an example of this sticker. A yellow rectangle has been added to the photo to identify the serial number.

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:

• Open a service request on Cisco.com
• By email
• By telephone

---