Cisco Cisco IOS Software Release 12.2(2)XK

For information regarding the features supported in Cisco IOS Release 12.2 T, refer to the 
Cross-Platform Release Notes and New Feature Documentation links at the following location on CCO:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122relnt/xprn122t/index.htm

This URL is subject to change without notice. If it changes, point your web browser to CCO, and click 
the following path:

:

 Technical Documents

:

:

 Release 12.2

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 Release Notes

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Cross-Platform Release Notes (Cisco IOS Release 12.2T)

boot system flash imagename Command Not Supported

Although the boot system flash command is supported in Release 12.2(2)XK, the configuration 
command boot system flash imagename is not supported.

The configuration command boot system tftp is not supported in Release 12.2(2)XK.

For some interfaces, if fast-switching is enabled, IPSec does not function. For example, the dialer 
interface, used for PPPoE configuration, does not support fast-switching and IPSec simultaneously.

The following sections contain important notes about Cisco IOS Release 12.2(2)XK that can apply to 
Cisco 806 routers. (Also, see the 

When specifying the method of authentication while configuring PPPoE and connecting to a Service 
Provider, the optional argument might be required to successfully authenticate the connection. For 
example: 

interface Dialer0

 ppp authentication pap optional

or

interface Dialer0

 ppp authentication chap optional