Cisco Cisco IOS Software Release 12.2

CSCeb06567

Symptoms: The NetFlow microcode may be flawed and cause the Parallel Express Forwarding 
(PXF) engine to reload with the following error message:

IHB Exception - watchdog timer expired

Conditions: This symptom is observed on a Cisco 7200 series that is configured with a Network 
Service Engine (NSE) and on a Cisco 7401.

Workaround: Disable PXF if this is an option. Otherwise, there is no workaround.

CSCea21643

Symptoms: The dialer watch may stall, and a Cisco router may pause permanently.

Conditions: This symptom is observed when an ISDN link flaps.

Workaround: There is no workaround.

This section describes possibly unexpected behavior by Cisco IOS Release 12.2(17). All the caveats 
listed in this section are resolved in Cisco IOS Release 12.2(17). This section describes severity 1 and 2 
caveats and select severity 3 caveats.

The following information is provided for each caveat:

Symptoms: A description of what is observed when the caveat occurs. 

Conditions: The conditions under which the caveat has been known to occur. 

Workaround: Solutions, if available, to counteract the caveat.

CSCdu07504

Symptoms: A Cisco router may reload because of a software condition when you enter the show 
voice dsp EXEC command. The following message is displayed when you enter the show version 
EXEC command:

<router name> uptime is 10 minutes 

System returned to ROM by error - software forced crash, PC 0x2242AC 

System image file is <file name>

Conditions: This symptom is observed on a Cisco router that is running Cisco IOS 
Release 12.1(5)XM2 but may also occur in other releases such as Release 12.2 T.

Workaround: There is no workaround. 

CSCdx04081

Symptoms: A Cisco MC3810 router with a T1 controller may report line code violation (LCV) 
errors.

Conditions: This symptom is observed on a Cisco MC3810 router with a T1 controller.