*Expired* FN - 25714 - ONS 15454/15327 CTC Release 4.0 - Possible Digital Signal Level One (DS1) Resets

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Updated:November 20, 2006

Document ID:FN25174

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Revised November 20, 2006

June 17, 2003

NOTICE:

THIS FIELD NOTICE HAS BEEN ARCHIVED AND IS NO LONGER MAINTAINED OR UPDATED BY CISCO.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

ONS Cisco Transport Controller (CTC) software release 4.0

Problem Description

An issue exists where digital signal level one (DS1) ports provisioned to use Extended Super Frame (ESF) framing automatically reset if they experience a temporary loss of frame (LOF).

An outage can occur for the duration that both a working and protect DS1 card are in the reset state .

Specifically, toggling to D4 and then ESF framing on a test set or a marginal DS1 signal coming from external equipment can trigger the automatic reset. If the DS1 card or XTC card on a 15327 is a part of a protection group, the protect card will become active and may also reboot due to another transient LOF.

This issue is limited to release 4.0 only.

Background

This issue is only seen in software release 4.0 on ONS15454 and ONS15327 network elements with DS1 ports provisioned for ESF framing.

Problem Symptoms

The active DS1 card or active XTC card will reboot. If the DS1 card or XTC card is a part of a protection group, the protect card will become active and may also reboot on another temporary LOF.

Workaround/Solution

Provision all ports and external DS1 equipment for D4 framing. This applies to both the ONS15454 and the ONS15327.

Download and apply the 4.0.1 maintenance release. This is available for download from the Cisco ONS 15454 Software page (registered customers only) .

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
CSCea78368 (registered customers only)	DS1 card rebooted after injection and clearing of Loss of Frame

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