Guest

Cisco ONS 15454 Series Multiservice Provisioning Platforms

Field Notice: FN - 29922 - 15454-XC-VT - An XCVT Card in a Protected UPSR System May Cause DS1 Errors


Revised March 2, 2006

June 30, 2004


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 Top Assembly Comments
Part Number
15454-XC-VT   800-08058-01   800-08058-02 or later, 800-18578-0x, 800-08724-0x and 800-06588-0x are not affected by this issue.
 

Problem Description

When performing Virtual Tributary (VT) grooming (Add/Drop VT1.5 To/From STS-1 Circuit) via the 15454-XC-VT in a protected Unidirectional Path Switched Ring (UPSR) system, 15454-XC-VT cards with part number 800-08058-01 may cause DS1 errors.  

Background

This issue was caused due to design changes implemented in part number 800-08058-01. The issue was discovered in the field and has been corrected through an update to the field programmable gate array (FPGA) image of the 15454-XC-VT.  

Problem Symptoms

When performing VT grooming (Add/Drop VT1.5 To/From STS-1 Circuit) via the 15454-XC-VT in a protected UPSR system, 15454-XC-VT cards with part number 800-08058-01 may cause DS1 errors. The errors reported on the DS1 card or any card running DS1 payload are: CV-V, ES-V, DS1 Tx CV-P and DS1 Tx ES-P, while Loss of Framing (LOF) and cyclic redundancy check (CRC) errors may be seen on the DS1 terminating equipment. PM counts for these errors will increase, although are unlikely until threshold crossing alert (TCA) levels are reached.  

Workaround/Solution

Customers who are performing VT grooming via the 15454-XC-VT in a protected UPSR system with P/N 800-08058-01 can request an upgrade to the 15454-XC-VT through normal RMA procedures.

How To Identify Hardware Levels

To determine the Part Number, Hardware Revision and Serial Number of your 15454-XC-VT boards:
  1. Open Cisco Transport Controller (CTC).

  2. From the Shelf View, select Inventory

  3. From the Inventory tab, locate the XC-VT boards and compare the information from the Inventory tab against the Products Affected section above.



 

For More Information