show running can't display some commands on Cisco 2921

[Pengfei Wang]

Hello everyone

I have a CISCO2921/K9 router running 15.1(4)M4, I entered follow commands :

##########################################################

ip subnet-zero

no service finger

no boot network

############################################################

But i can't see any output about these commands use show running/show running all

Any method can display these commands?

Thank you

[Reza Sharifi]

Hi,

Usually if a command is disabled or enabled by default, the IOS does not show it in the running config. For example, in the newer IOS versions ip subnet-zero is enabled by default, so the IOS does not show it in the config. no service finger has been replaced by no ip finger and it is disabled by default.  See this document for more info:

http://www.cisco.com/c/en/us/td/docs/ios/fundamentals/command/reference/cf_book/cf_r1.html#wp1014016

HTH

[Pengfei Wang]

Thank you very much.

[Pengfei Wang]

Hi Reza

"Usually if a command is disabled or enabled by default, the IOS does not show it in the running config. For example, in the newer IOS versions ip subnet-zero is enabled by default, so the IOS does not show it in the config."

Is there a ducument explain this?