Cisco Cisco IOS Software Release 12.4(4)T

Conditions: This symptom is observed on a Cisco router that is running Cisco IOS Release 12.3(5b), 
but it can happen on any Cisco IOS 12.3 release. This symptom can occur when PPP sessions go 
down while the show output is suspended.

Workaround: There is no workaround. 

Cisco IOS Release 12.4(4)T1 is a rebuild release for Cisco IOS Release 12.4(4)T. The caveats in this 
section are resolved in Cisco IOS Release 12.4(4)T1 but may be open in previous Cisco IOS releases. 

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.

CSCsc24145

Symptoms: When upgrading from an image running CLI phase I or II (ip sla monitor) to an image 
running CLI Phase III (ip sla without monitor keyword), the IP SLAs configuration is lost.

Conditions: This symptom has been observed on routers having ip sla monitor configured and 
upgrading to CLI Phase III (i.e., Cisco IOS Release 12.4(4)T). This does not impact a old rtr CLI.

Workaround: There are two workarounds:

1. Reconfigure new operations with the new release, or

2. Save the old configuration and convert it to a new configuration using a search-and-replace tool 
offline before upgrading. 

CSCef84174

Symptoms: PPP forwarding may fail between two virtual access interfaces.

Conditions: This symptom is observed on a Cisco AS5850 but is not platform-dependent.

Workaround: Disable PPP multilink on the asynchronous interfaces. 

CSCei69551

Symptoms: When a router is reloaded, the E lead (input) on an E&M port is seized for a duration of 
20 to 25 seconds, causing a radio system that is connected to the E&M port to be activated.

Conditions: This symptom is observed in a Cisco Land Mobile Radio (LMR) configuration when 
you enter the bootup e-lead off command.

Workaround: There is no workaround. 

CSCei93090

Symptoms: EIGRP does not learn routes when the ip pim sparse-dense-mode command is 
configured on a Gigabit Ethernet interface.