Question #1 EIGRP Exactly when is the RTP protocol used? Is it used only when traffic crosses WAN links or is it also used on a local LAN? Is it used only for certain packet types or all packet types? Is it always used on routing updates? THE BOOKS DISAGREE ON THE ANSWER TO THIS QUESTION. Question #2 DUAL DUAL will reject a route update if the REPORTED DISTANCE is less then the FEASIBLE DISTANCE of the successor - to prevent a possible routing loop. But, if the successor is removed and DUAL performs a diffused computation, and gets a reply advertising THE SAME EXACT NETWORK IT REJECTED BEFORE, DUAL will accept the route. Right? So how does DUAL know for sure the route is not looped when it accepts it. How is the guaranteed 100% loop-free promise kept in this circumstance? Thanx! Jimbo