Cisco e2500v2 setting up as a client

i followed the instructions

i set to the ip address of lan to 192.168.2
get a error when i set the ip address of the upstream router in the gateway

apply the setting and the router reboots to

new to this there something wrong with the doc i used.
a link to a better doc on setting up as a client on this model of router


If I remember correctly, the apply button allows you to override the error.

It says apply unchecked or something similar.