Cisco Cisco IOS Software Release 12.4(4)T Notas de publicación

This section describes possibly unexpected behavior by Cisco IOS Release 12.4(6)T. All the caveats 
listed in this section are resolved in Cisco IOS Release 12.4(6)T. This section describes severity 1 and 2 
caveats and select severity 3 caveats.

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Symptoms: AAA Authentication is bypassed when logging into the router a second time. After 
loading the image and configuring the aaa authentication login myown local command, a prompt 
for the login and password occurs. After logging out and logging back for a second time, the system 
goes to the console without prompting for a login and password.

Conditions: This symptom has been observed on a router running Cisco IOS interim 
Release 12.4(3.9)PI3d and performing these steps:

Configure the aaa authentication login command. 

Log into the router. 

Exit. 

Log into router again.

Workaround: There is no workaround. 

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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:

Reconfigure new operations with the new release, or 

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

CSCec25562

Symptoms: A Cisco router may crash while signaling 40K TE LSPs.

Conditions: When RSVP refresh reduction is enabled and the router has exhausted its memory, then 
it is possible a crash may occur inside rsvp_rmsg_process_acks() if a queue element could not be 
allocated. The code does not check if the queue element was successfully allocated before removing 
a pointer to it.

Workaround: There is no workaround.