Field Notice: Database Corruption with ONS 15454 SDH Releases 4.0, 4.0.1 and 4.1.0

Available Languages

Updated:March 18, 2004

Document ID:FN28175

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February 4, 2004

Products Affected

Product	Comments
ONS 15454 SDH with XC-VXL-10G or XC-VXL-2.5G	Releases 4.0, 4.0.1 and 4.1

Problem Description

The database can become corrupted on an ONS 15454 SDH with XC-VXL cards when provisioning VC12 tributary circuits.

Background

The XC-VXL card on the ONS 15454 SDH allows the ability to groom VC12 tributary circuits. Under certain scenarios, creating and deleting VC12 circuits can cause the database to become corrupt. The database load process on the ONS 15454 SDH occurs during a TCC2 reboot, TCC2 protection switch, software activation, or database restore.

Problem Symptoms

In Release 4.1, when a database is loaded containing this corruption, the load process fails, causing the corrupt database to be deleted from the TCC2 flash memory. In Release 4.0, either the above scenario occurs, or both TCC2s reboot indefinitely. If this issue occurs, you will see a loss of all provisioning after a TCC2 switch or reset.

Workaround/Solution

To detect the issue on one Network Element (NE), or on a network, use the SDH Circuit Repair Utility (VcCheck) provided on the ONS 15454 SDH Release 4.1.3 and 4.6 software CDs. The VcCheck tool is also available for download from the Software Download Page (registered customers only) on Cisco.com. Before using the VcCheck tool, read the VcCheck README. Once you have alleviated the immediate risk from the issue, you must upgrade to Release 4.6, maintenance Release 4.1.3 or any later release to avoid further risk. The VcCheck utility and its associated README file, which is in the same directory with the tool, provide details on how to temporarily alleviate this issue before upgrading to a release in which the issue is resolved.

DDTS

To follow the bug ID link below and see detailed bug information, you must be a registered user and you must be logged in.

DDTS	Description
CSCec42769 (registered customers only)	A hard reset of an active TCC2 causes the deletion of the node database.

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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