Do not jumper any wires on the Nest .
Put red to R, and match up the rest.
You will need to connect a C common wire. Is there an unused wire in the cable usually there are 5 wires.
Then you also need to connect it at the furnace to C terminal.
If you are using the Nest with the mirror glass not the learning model you will need a C wire connected to the furnace and the Nest.
The learning thermostat does not require a C wire .