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Cisco 800 Series Routers

Field Notice: FN - 63343 - PCEX-3G-HSPA-R6 Modem not Recognized in Cisco IOS 15.1(1)T of Cisco 880G Series Router - Cisco IOS Upgrade Required

Field Notice: FN - 63343 - PCEX-3G-HSPA-R6 Modem not Recognized in Cisco IOS 15.1(1)T of Cisco 880G Series Router - Cisco IOS Upgrade Required

July 13, 2010


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
1.0
13-July-2010
Initial public release.

Products Affected

Products Affected
800BB - PCEX-3G-HSPA-R6 
880 - CISCO881G-G-K9 
880 - CISCO881GW-GN-A-K9 
880 - CISCO886G-K9 
880 - CISCO886GW-GN-E-K9 
880 - CISCO887G-K9 
880 - CISCO887GW-GN-A-K9 
880 - CISCO887GW-GN-E-K9 
880 - CISCO887VG-K9 
880 - CISCO887VGW-GNA-K9 
880 - CISCO887VGW-GNE-K9 
880 - CISCO888G-K9 
880 - CISCO888GW-GN-A-K9 

Problem Description

The product release instruction (PRI) programmed in the modem does not match the PRI accepted by Cisco IOS®. This mismatch results in an unrecognized modem when it is installed into the 880G series routers.

This is a Cisco IOS problem on the 880G series routers, and DDTS CSCth51125 (registered customers only) was created for this issue.

Background

Upon insertion of the PCEX-3G-HSPA-R6 modem into an 880G series router, the modem appears in the associated cellular interface CLI as MODEM_NOT_RECOGNIZED due to a bug (CSCth51125) in Cisco IOS.

This issue will happen 100% of the time when inserting this modem into an 880G series router that runs Cisco IOS 15.1(1)T.

This issue will be fixed in Cisco IOS 15.1(1)T1.

Problem Symptoms

None of the PCEX-3G-HSPA-R6 modems will be recognized in the 880G series routers cellular interface due to invalid Cisco IOS PRI checking with mismatch program value.

Here is the output to look for when the router boots up with the modem installed:
Router>
*Jun 24 10:01:39.927: %CISCO800-2-MODEM_NOT_RECOGNIZED: Cellular0 modem not RECOGNIZED. 
        Carrier id not available or invalid! Replace it with Cisco supported modem and 
        reload the router.
*Jun 24 10:01:39.959: %CELL_MSG-1-MODEM_ACK_FAIL: [Cellular0] Modem Ack not received.

Router>

*Jun 24 10:14:10.107: %CELL_MSG-1-DMA_TX_FAILURE: HWIC cellular DMA transmit failure for 
        NM slot 0 HWIC slot 0, dma_q_type 1. Unable to send the packet.

Workaround/Solution

Workaround:

In order to resolve the issue, the customer must contact TAC and upgrade the affected 880G series routers to a supported engineering build. Once the Cisco IOS 15.1(1)T1 is released on 7/16/2010, the 880G series router must then be upgraded to Cisco IOS 15.1(1)T1.

Note: Support for the engineering build will end once Cisco IOS 15.1(1)T1 is released.

Solution:

Upgrade affected 880G series routers to Cisco IOS 15.1(1)T1 or later.

DDTS

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

DDTS
CSCth51125 (registered customers only)

How To Identify Hardware Levels

All PCEX-3G-HSPA-R6 modems (part number: 74-6961-01) will exhibit this problem when inserted into routers identified by the product IDs listed below.

Refer to the image below to identify the location of the product ID and part number on the affected modems.

CISCO881G-G-K9
CISCO888G-K9
CISCO887VG-K9
CISCO881GW-GN-A-K9
CISCO888GW-GN-A-K9
CISCO887VGW-GNA-K9
CISCO887VGW-GNE-K9
CISCO886G-K9
CISCO886GW-GN-E-K9
CISCO887G-K9
CISCO887GW-GN-A-K9
CISCO887GW-GN-E-K9

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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