[spiderplant]

TiVo has its own cable modem built in, which is how it gets access to internet services etc. There are no configuration settings for it - it is all managed from VM's end.

Separately, you can connect TiVo to your home network. This is mainly for future use, but you can use network remote controls to control the TiVo now. These are the settings you are looking at. For most people, automatic DHCP will be fine.