|  | 6.2 | Router Configuration Modes
| 6.2.3 | Configuring routing protocols
As with binary numbers, converting from decimal to hex is done with a system called the remainder method. In this method we repeatedly divide the decimal number by the base number (in this case 16). We then convert the remainder each time into a hex number. After a routing protocol is enabled by a global command, the router configuration mode prompt Router (config-router)# is displayed as shown in the figure. You type a question mark (?) to list the routing protocol configuration sub-commands.