Use the no option to disable a function of a command. Use the command‘s syntax without the no form to enable it. The no option can also be used to delete settings or files when used with certain commands. Not all commands within the CLI include a no option.
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The following example configures and displays a gateway IP address, then disables it with the no command and displays the change.
EWC.extremenetworks.com:topology:Admin:l3# gateway 192.176.3.4 EWC.extremenetworks.com:topology:Admin:l3# show gateway gateway 192.176.3.4 EWC.extremenetworks.com:topology:Admin:l3# no gateway EWC.extremenetworks.com:topology:Admin:l3# show gateway no gateway