Router#wr
Building configuration...

% Warning: Saving this config to nvram may corrupt any network management or security files stored at the end of nvram.
Continue? [no]: no
% Configuration buffer full, can't add command: 1.1.1.1 0.0.0.0
%Aborting Save. Compress the config.[OK]
Router#conf t
Router(config)#service compress-config
Router#wr
Building configuration...
Compressed configuration from 135121 bytes to 24897 bytes[OK]