I have a new internet tv. my sbc dsl modum would not conect to the tv. there was no gatway conection. I have dicect tv hd box instaled to the cate5 wall plug, to the hd receiver, the out to the internet tv. the ping came back no gateway conection.
More aboutwhat gatway home network
gateway is generally another name for your router. Is your TV/etc getting an IP?