Cisco 3800 Series Integrated Services Routers

September 29, 2005

NOTICE:

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

Products Affected

Problem Description

A Cisco3845 using WIC-1SHDSL-V2 on HWIC slot2 with IOS images 12.3(14)T and 12.4(1) could result in a reset to ROMMON.

This condition happens only when the line-mode on the WIC in slot 0/2/0 is configured for 4-wire.

This behavior is observed only on 3845 and not seen on any other platform.

Background

This was only detected in Cisco's Engineering Labs. There have been no failures seen in the field.

A CISCO3845 may reset to rommon if the following three, low probability, criteria occur:

• A WIC-1SHDSL-V2 is installed in HWIC2 slot (3rd slot from the right)

• A WIC-1SHDSL-V2 is configured in 4-wire mode and DSL trains up. 2-wire mode will not produce this failure.

• A Cisco3845 is using SW release 12.3.14T or the soon to be released 12.4.1. The future, second maintenance release of 12.4 will not have this issue.

If this problem is encountered with the Cisco3845-MB with the VID of "V01", it is recommended to power off the box and move the card to HWIC0, HWIC1, or HWIC3.

Problem Symptoms

A CISCO3845 may reset to rommon if the following three, low probability, criteria occur:

• A WIC-1SHDSL-V2 is installed in HWIC2 slot (3rd slot from the right)

• A WIC-1SHDSL-V2 is configured in 4-wire mode and DSL trains up. 2-wire mode will not produce this failure.

• A Cisco3845 is using SW release 12.3.14T or the soon to be released 12.4.1. The future, second maintenance release of 12.4 will not have this issue.

If the above three criteria are met, the following screen dumps may be displayed from the CISCO3845:

3845-35#conf t
3845-35(config)#contr dsl 0/2/0
3845-35(config-controller)#line-mode 4
 Feb 25 18:39:28.279: %CONTROLLER-5-UPDOWN: Controller DSL 0/2/0, 
changed state to down
*Feb 25 18:39:53.047:  DSL 0/2/0 controller Link up! line rate: 4608 
Kbps

*Feb 25 18:39:53.051: %CONTROLLER-5-UPDOWN: Controller DSL 0/2/0, 
changed state to up
*Feb 25 18:39:58.491: %LINK-3-UPDOWN: Interface ATM0/2/0, changed 
state to up
*Feb 25 18:40:01.527: %LINEPROTO-5-UPDOWN: Line protocol on Interface 
ATM0/2/0, changed state to up

*Feb 25 18:49:53.907: %SYS-3-CPUHOG: Task is running for (126000)msecs, 
more than (2000)msecs (108485/425),process = XDSL BACKGROUND.
-Traceback= 606817F4 60A43F5C 60A45B9C 60A59C5C 60A5C91C 60A5F9F8 
60A58B18 60A4740C 60A46320 
No warm reboot Storage 
*** System received a Software forced crash ***
signal= 0x17, code= 0x24, context= 0x6442b3d4
  PC = 0x60ae3a68, SP = 0x64e9b558, RA = 0x60ae1914
  Cause Reg = 0x00000024, Status Reg = 0x3400ff03
rommon 2 >

Note: HWIC ports are marked via silkscreen as HWIC0, HWIC1, HWIC2, and HWIC3. The HWIC2 is the 3rd slot from the right on the CISCO3845-MB.

Workaround/Solution

We have no reported TAC cases to date for a problem with a WIC-1SHDSL-V2 failing in HWIC2 on the CISCO3845-MB.

This issue was only found in the Engineering Lab.

If this problem occurs with the Cisco 3845 MB with the VID of "V01", it is recommended to move the card to HWIC0, HWIC1, or HWIC3.

How To Identify Hardware Levels

Listed below is an example of the output from the show diag command. Reference the Top Assy. Part Number, Version Identifier and Part Number.

Slot 0:
    C3845 Mother board 1GE(TX,SFP),1GE(TX), integrated VPN and 4W Port adapter, 7 ports
    Port adapter is analyzed 
    Port adapter insertion time unknown
    EEPROM contents at hardware discovery:
    PCB Serial Number        : xxxxxxxxxxx
    Hardware Revision        : 1.0
    Top Assy. Part Number    : 800-23616-01
    Board Revision           : A0
    Deviation Number         : 0
    Fab Version              : 04
    RMA Test History         : 00
    RMA Number               : 0-0-0-0
    RMA History              : 00
    Processor type           : 69 
    CLEI Code                : XXXXXXXXXX
    Product (FRU) Number     : CISCO3845-MB      
    Version Identifier       : V01 
    Chassis MAC Address      : xxxx.xxxx.xxxx
    MAC Address block size   : 48
    Part Number              : 73-8799-04
    Hardware date code       : xxxxxxxx
    Chassis Serial Number    : XXXXXXXXXXX
    EEPROM format version 4
    EEPROM contents (hex):
      0x00: 04 FF C1 8B 46 4F 43 30 38 34 32 31 47 31 4D 40
      0x10: 04 2C 41 01 00 C0 46 03 20 00 5C 40 01 42 41 30
      0x20: 88 00 00 00 00 02 04 03 00 81 00 00 00 00 04 00
      0x30: 09 69 C6 8A 49 50 4D 45 31 31 30 42 52 41 CB 92
      0x40: 43 49 53 43 4F 33 38 34 35 2D 4D 42 20 20 20 20
      0x50: 20 20 89 56 30 31 20 D9 02 40 C1 C3 06 00 11 93
      0x60: 68 35 70 43 00 30 82 49 22 5F 04 83 01 31 CD 3B
      0x70: C2 8B 46 48 4B 30 38 34 36 46 31 5A 47 FF FF FF

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

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