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Cisco 12000 Series Routers

Field Notice: *Expired* FN - 23754 - Soft Errors on Cisco 12000 E4/E4+ Engine Based Line Cards

Cisco - Field Notice: *Expired* FN - 23754 - Soft Errors on Cisco 12000 E4/E4+ Engine Based Line Cards

Revised April 14, 2008
October 14, 2005


NOTICE:

THIS FIELD NOTICE HAS BEEN EXPIRED AND IS NO LONGER MAINTAINED OR UPDATED BY CISCO.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

4OC48/POS-LR-SC

4OC48/POS-SR-SC

4OC48/SRP-SFP

4OC48E/POS-LR-SC

4OC48E/POS-SR-SC

OC192/POS-SR-SC

OC192E/POS-LR-SC

OC192E/POS-SR-SC

OC192E/POS-VSR

   

Problem Description

Cisco 12000 E4/E4+ engine based line cards may generate the following error strings:

%RX192-3-HINTR: status = 0x4000000, mask = 0x7EFFFF FF - Parity error 
on rx_pbc_mem 
%SYS-2-INTSCHED: 'sleep for' at level 7 -Process= "CEF IPC Background", ipl= 7, pid= 52

Following these errors Cisco Express Forwarding (CEF) on the E4/E4+ line card may become disabled, although the associated port stays in an "Up/Up" state.

Background

This symptom is observed on a Cisco 12000 series router with engine 4/4+ line cards that runs a Cisco IOS® Software Release at or earlier than 12.0(21)S5, 12.0(22)S3, or 12.0(23)S1.

Note: This is a software problem that does not require hardware replacement.

Problem Symptoms

Following errors, Cisco Express Forwarding (CEF) on a E4 or E4+ engine based line card becomes disabled, even though the associated port stays in an "Up/Up" state.

Workaround/Solution

Work around:

Enter the CmdBold microcode reload noCmdBold CmdArgslot-number noCmdArg global configuration command on the E4+ OC-192 line card.

Solution:

The following IOS releases and higher have fixed this problem:

  • 12.0(21)ST6

  • 12.0(21)S6

  • 12.0(22)S4

  • 12.0(23)S2

  • 12.0(24)S1

DDTS

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DDTS

Description

CSCdz60830 (registered customers only)

Need to handle rx_adj parity errors more gracefully

CSCdy68292 (registered customers only)

Parity error on rx_pbc_mem and IPC errors on in-service OC192 LC

   

Additional Assistance

If you require further assistance, or if you have any further questions regarding this field notice, please send e-mail to ask-sde@cisco.com

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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