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Cisco ONS 15300 Series

Field Notice: FN - 62261 - ONS 15305-AC-230V= Redundant Power Reboot Issues


Revised November 27, 2007
October 4, 2006


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.

Revision History

Revision Date Comment
1.1 27-NOV-2007 Removed Upgrade Form and all references to the form.
1.0 04-OCT-2006 Initial Public Release

Products Affected

Product
15305-AC-230V=

Problem Description

The 15305-AC-230V power module may experience instability issues when used in conjunction with some UPS brands, causing the 15305 unit to reset. When switching is performed between normal/emergency or emergency/normal power, some UPS brands experience substantial voltage transients.

This issue may be encountered when an ONS 15305 is configured for redundant power operation, where the system is powered with two internal AC-power modules, where both modules are connected to a UPS, or one module is connected to a UPS and the other is connected directly to the main power. In this configuration, after the modules are powered-on, the node begins to repeatedly reset (LEDs flashing). Switching to non-redundant operation with one AC or operating in a redundant configuration with two AC/DC power modules connected to the UPS source will correct the issue. This issue is not seen in non-redundant configurations.

Background

Customers using the redundant AC power supply option in the 15305, with both modules connected to a UPS or one module connected to a UPS and the other connected directly to the main power, may experience reset issues.

Problem Symptoms

The ONS 15305 may start to reset whenever an ONS 15305 unit is powered with two internal AC-power modules, with both modules connected to a UPS or one module connected to a UPS and the other connected directly to the main power.

Workaround/Solution

If the system will not be configured for redundant power operation, or has been so configured and is operating as expected, then is it not necessary to replace the AC power modules.

If your system is configured for redundant operation, and you are experiencing this issue, please contact your account team.

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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