Guest

Cisco Carrier Routing System

Field Notice: FN - 62250 - CRS: Upgrading From IOS-XR 3.0.x to 3.2.x May Encounter Hang Unless ROMMON 1.32 is Installed


Revised August 14, 2007

November 17, 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

Product

CRS - CRS-16-RP=

CRS - CRS-8-RP/R

CRS - CRS-8-RP=

CRS16 - CRS-16-RP

CRS8 - CRS-8-RP

Problem Description

When upgrading from IOS-XR 3.0.x to 3.2.x, the installation will proceed but may appear to stall for an extended period of time when the applying the upgrade to components within the CRS router.

Background

A problem is seen where the I2C bus, used for internal communication between components, stalls. This is not seen in all circumstances. When the bus stall occurs, intervention is required to restart the bus. The fix is integrated in Rommon 1.32. Application of this ROMMON version will prevent the bus stall from occuring.

Problem Symptoms

Error message encountered with this issue:

shelfmgr[282]: %PLATFORM-SHELFMGR-6-EMPTY_SERIAL_BOOT_OVERRIDE : WARNING !!! WARNING !!! 
Received boot request from an RP with an empty rack serial number. Permitting RP to boot due to config override. 
Please use override carefully and remove if not needed anymore. 
Refer to customer documentation for additional information on override usage.

Workaround/Solution

The fix is to upgrade to ROMMON 1.32 prior to upgrading to IOS-XR 3.2.x.

URL for ROMMON Install Process:

Upgrading and Downgrading ROM Monitor Software on Cisco CRS-1 Routers

Revision History

Revision

Date

Comment

1.2

14-AUG-2007

Fixed link,

1.1

06-JAN-2006

Added URL for Upgrade Instructions

1.0

17-NOV-2005

Initial public release

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:

Receive Email Notification For New Field Notices

Product Alert Tool - Set up a profile to receive email updates about reliability, safety, network security, and end-of-sale issues for the Cisco products you specify.