50 CHAPTER 4: S TARTUP AND CONFIGURATIONEnter , the system will enter the extended Boot ROM menu; otherwise,the system will enter the program decompression process.n The system enters the Boot extended menu only if is pressedimmediately (within six seconds) after the statement “Press Ctrl+B to enterextended Boot Menu...” appears. Otherwise, you will enter the programdecompression process. To re-enter the Boot extended menu during thedecompression process, you need to reboot the router.The current starting file is main application file--cf:/main.bin!The main application file is self-decompressing...Decompressing...done!System is starting.....Ensure the baudrate is set to 9600bps!Starting at 0x10000...usrRoot() endleave BSPid=0x2000,proc=0xc6c888....................id=0x1cfff000,proc=0xc7b6d4User interface con0 is available.Press ENTER to get started.Press and the screen will display:This prompt indicates that the router has entered the user view, and now therouter can be configured.ConfigurationFundamentalsIn general, the configuration steps are as follows:Step 1: Before configuring the router, the networking requirements should bemade specific, which include networking purpose, the role of the router in thenetwork, the division of subnets, WAN type and transmission medium, thenetwork security policy and reliability.Step 2: Based on the above requirements, draw a clear and integrated networkingdiagram.Step 3: Configure the WAN interface of the router. First, configure the physicaloperating parameters (e.g., the operating mode of the serial interface, baud rateand synchronous clock) of the interface according to the transmission medium ofthe WAN. For the dial-up interface, the user also needs to configure DCCparameters. Then, configure the link layer protocol encapsulated on the interfaceand the related operating parameters according to the WAN type.
