Field Notice: Mueslix Halts on Cisco 7200 Series Routers

Updated July 25, 2002

April 25, 2002

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Products Affected

Product	Top Assembly	Printed Circuit Assembly	Comments
	Part Number	Part Number
PA-4T+	800-01838-xx	73-1577-xx	4 Port Serial Port Adapter, Enhanced
PA-8T-V35	800-01836-xx	73-1580-xx	8-Port Serial, V.35 Port Adapter
PA-8T-X21	800-01837-xx	73-1582-xx	8-Port Serial, X.21 Port Adapter
PA-8T-232	800-01835-xx	73-1581-xx	8-Port Serial, 232 Port Adapter
PA-H	800-02747-xx	73-2559-xx	1-Port HSSI Port Adapter
PA-2H	800-03306-xx	73-2914-xx	2-Port HSSI Port Adapter
PA-T3	800-02886-xx	73-2616-xx	1 Port T3 Serial Port Adapter with T3 DSUs
PA-2T3	800-02579-xx	73-2323-xx	2 Port T3 Serial Port Adapter with T3 DSUs
PA-E3	800-00327-xx	73-2620-xx	1 Port E3 Serial Port Adapter with E3 DSU
PA-2E3	800-00327-xx	73-2324-xx	2 Port E3 Serial Port Adapter with E3 DSUs
PA-T3+	800-04678-xx	73-3762-xx	1 Port T3 Serial Port Adapter Enhanced
PA-2T3+	800-04677-xx	73-3761-xx	2 Port T3 Serial Port Adapter Enhanced
PA-2JT2	800-02259-xx	73-2215-xx	2-Port JT2 6.3Mb/s Serial Port Adapter

Problem Description

On a Cisco 7200 Router, when the mueslix serial port adapters are used with a high bandwith port adapter (like ATM) in the same PCI bus, the serial interface may stop functioning when NVRAM is accessed. This can occur when the interface traffic rates reach approximately 50 percent on the serial and high bandwidth interfaces.

Some possible triggers to the problem are:

• Executing a write memory command when the serial interface is passing traffic.

• The use certain commands like show version when serial interface is passing traffic.

Background

The problem as described above may occur on port adapters that have a Mueslix ASIC on them. The port adapters listed in the Products Affected section have this Mueslix ASIC. This problem only occurs on the port adapters that are listed in the Affected Products section and does not affect all port adapters. Furthermore, this problem can occur with the NPE-200, NPE-225, NPE-300, NPE-400 and NSE-1 processors on the Cisco 7200VXR Series routers.

Problem Symptoms

If a write memory command, or other command such as show version is executed, these failure symptoms occur:

1. Mueslix error messages displayed in the logs.

   MUESLIX-1-STARTFAIL/ MUESLIX-1-STOPFAIL
   MUESLIX-1-HALT
   

2. The interface may flap or go down completely.

Workaround/Solution

The solution to the problem is to upgrade Cisco IOS® Software to one of the releases in the as described in the attached table.

Note: If the problem occurs on the NPE-300, use DDTS CSCdt71082 for resolution. If the problem occurs on the NPE-200, NPE-225, NPE-400 or NSE-1, refer to the DDTS associated with the port adapter installed in the system for resolution.

Bug ID	Description	Applicable Hardware	Major Integrated Releases
CSCdt71082	MUSELIX-HALT on NPE-300 with HSSI/E3/T3 PA	NPE-300	12.1(11), 12.1(11)E, 12.1(11)EC, 12.2(5), 12.2(5)S, 12.2(4)T1, 12.2(8)B, 12.0(20)SP, 12.0(20)ST, 12.0(20)S
CSCdw08302	CSCdt71082 fix is broken in 12.2	PA-4T+, PA-8T	12.2(7), 12.2(8)B, 12.2(7)S, 12.2(7)T
CSCdv67410	MUESLIX-1-HALT on 7200 with HSSI/T3/E3	PA-2H, PA-2T3, PA-2E3	12.0(22)S, 12.0(21)SP, 12.0(21)ST, 12.1(13), 12.1(11)E1, 12.1(11)EC, 12.2(7), 12.2.(8)T, 12.2(8)B, 12.2(8)S
CSCin01252	Microcode fix needed for PA-T3, PA-E3	PA-H, PA-T3, PA-E3	12.1(15), 12.1(12)E, 12.2(10), 12.2(11)T, 12.2(11)S
CSCdt40038	PA-8T after some time puts ports 4-7 in up-down	PA-4T+, PA-8T	12.0(20)S, 12.0(20)SP,12.0(20)ST, 12.1(12), 12.1(11)E, 12.1.(11)EC, 12.2(6), 12.2(6)T, 12.2(6)S, 12.2(8)B
CSCdv38171	PA-8T port flaps, after any config change, OIR only fix	PA-4T+, PA-8T	12.1(13), 12.1(11)E, 12.1(11)EC, 12.2(7), 12.2(7)T, 12.2(7)S, 12.2(8)B

DDTS

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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:

• Open a service request on Cisco.com
• By email
• By telephone

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