Cisco Cisco IOS Software Release 12.2(35)SE

If this happens, enter the no auto qos voip cisco-phone interface command on all interface with this 
configuration to delete it. Then enter the auto qos voip cisco-phone command on each of these 
interfaces to reapply the configuration. 

The behavior of the no logging on global configuration command changed in Cisco IOS 
Release 12.2(25)EY and later. In software releases earlier than Cisco IOS Release 12.2(25)EY, both 
of these command pairs disabled logging to the console:

the no logging on and then the no logging console global configuration commands

the logging on and then the no logging console global configuration commands

In Cisco IOS Release 12.2(18)SE and later, you can only use the logging on and then the no logging 
console global configuration commands to disable logging to the console. (CSCec71490)

Beginning with Cisco IOS Release 12.2(25)EY, ISL encapsulation is supported only on standard 
ports and not on an enhanced-services (ES) ports. The ES ports support only IEEE 802.1Q 
encapsulation and the switchport trunk encapsulation interface configuration command is no 
longer available on these ports. When you are upgrading a switch from Cisco IOS Release 
12.1(14)AX to Cisco IOS Release 12.2(25)EY or later, during the initial configuration process, the 
switchport trunk encapsulation option is rejected on ES ports, and an error message appears. You 
can ignore this error message. If you save the new configuration by using the copy running-config 
startup-config privileged EXEC command and later re-install the Cisco IOS Release 12.1(14)AX 
image, the trunk encapsulation method originally configured on ES ports is lost, and the ES ports 
use the default encapsulation method, which is to negotiate.

In Cisco IOS Release 12.1(14)AX and earlier, port-based EoMPLS sessions could only be 
configured on switch ports. In Cisco IOS Release 12.2(25)EY and later, port-based EoMPLS 
sessions can only be configured on routed ports. 

This change is handled automatically during an upgrade to Cisco IOS 12.2(25)EY or later, but 
if a configuration is written to NVRAM and the switch is then reloaded with Cisco IOS 
12.1(14)AX, the new-style configuration is lost. 

Beginning with Cisco IOS Release 12.2(25)EY, you must specify the encapsulation type when using 
the xconnect interface configuration command.

This change is handled automatically during an upgrade to Cisco IOS 12.2(25)EY or later, but 
if a configuration is written to NVRAM and the switch is then reloaded with Cisco IOS 
12.1(14)AX, the new-style configuration is lost. 

These are the Cisco IOS severity-3 open configuration caveats in this software release:

CSCsi70454

The configuration file used for the configuration replacement feature requires the character string 
end\n at the end of the file. The Windows Notepad text editor does not add the end\n string, and the 
configuration rollback does not work.

These are the workarounds. (You only need to do one of these.)

Do not use a configuration file that is stored by or edited with Windows Notepad.

Manually add the character string end\n to the end of the file.