Cisco WAN Switching Modules

Field Notice: AX-IMATM-8E1/A and AX-IMATM-8T1/A May Fail If Loaded With 4.0.12 to 4.0.15 Firmware

August 23, 1998

Products Affected

The following AXIS inverse multiplexing over ATM trunk module (AX-IMATM) cards are affected:

  • AX-IMATM-8E1/A

  • AX-IMATM-8T1/A

Problem Description

The AX-IMATM-8E1/A and the AX-IMATM-8T1/A cards may fail if loaded with firmware versions 4.0.12 through 4.0.15



A power reset of the AX-IMATM-8E1/A or the AX-IMATM-8T1/A may clear this problem. However, if the AX-IMATM-8E1/A or AX-IMATM-8T1/A is operating correctly, a power reset may induce a failure.


This problem is resolved by upgrading the AX-IMATM-8E1/A or the AX-IMATM-8T1/A to firmware version 4.0.16. Do not attempt to use firmware versions 4.0.12, 4.0.13, 4.0.14 or 4.0.15 on either the AX-IMATM-8T1/A or the AX-IMATM-8E1/A. The new minimum firmware revision for both IMATM/A models is 4.0.16 and the minimum boot code version is 4.0.01. It is not necessary to upgrade the firmware in the AX-ASC or AX-ASC2 cards if the firmware is a version of 4.0.

Identifying the AX-IMATM-8T1/A or AX-IMATM-8E1/A Firmware Revision Level

Using the Command Line Interface, verify the hardware revision by using the cc <slot#> command. You should see the following:

axis1.1.3.ASC.a > cc 7                

axis1.1.7.IMATM.s >   <<--- Notice slot number ".7" and card type ".IMATM".

Next, issue the dspcd command and observe the following display:


 FunctionModuleState:       Mismatch


 FunctionModuleSerialNum:   694067

 FunctionModuleHWRev:       ac

 FunctionModuleFWRev:       4.0.15   <<--- This firmware should be 4.0.16 or later. Firmware 4.0.11 may be used.

 FunctionModuleResetReason: Reset by ASC from PIO


  Not Present


 configChangeTypeBitMap:    CardCnfChng, LineCnfChng

 cardIntegratedAlarm:       Clear

 HighSpeedInterfaceType:    T3

 fab number:               


 axis1.1.7.IMATM.s >

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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