Cisco Network Tutorial: Router register Configuration

Cisco Network Tutorial: vro register configuration objective: Register configuration is used to change the vro startup process. The Start bit consists of four hexadecimal registers www.2cto.com format: 0 xABCD value range from 0x0 to 0 xFFFF 0x2102: Industrial default value 0x2142: Start from FLASH, but do not use the configuration file (for Password Recovery) in NVRAM 0x2101: Start from Boot RAM, apply to update system file 0x2141: Start from Boot RAM, if the third digit of the C-digit is 1 in the configuration file of NVRAM is not used, the Break Key is disabled. Otherwise, the Break Key is enabled. 0x141: disables the Break Key, does not use the configuration file in NVRAM, and starts from the system in the default ROM. 0x0040: Allows route gas to read configuration files in NVRAM. Monitoring command function o: Displays the active registers of the actual configuration in bits. o Displays the virtual configuration register, currently in effect, with a description of the bits o/r: the actual configuration of the reset register is set to the following value: 9600 (Port rate) whether the Break is valid or not to ignore whether the configuration in NVRAM is started from the ROM, for example: o/r 0x2102 table B-1 register configuration definition table www.2cto.com bits hexadecimal meaning 00 to 03 0x0000 to 0x000F start field 06 0x0040 so that system software ignores content in NVRAM 07 0x0080 OEM bit enabling 08 0x0100 Break Key disabling 10 0x0400 IP broadcast to all domains 11 to 12 0x0800 to 0x1000 Console port speed 13 0x2000 if network startup fails, 14 0x4000 IP broadcasts do not have net numbers 15 0x8000 IP do not have net numbers 15 0 x enable diagnostic information by default, while ignoring NVRAM content (1) the default register bit is 0x2102. This only consists of the following parts: bit 13 = 0x2000, bit 8 = 0x0100, and bits 00 to 03 (reference TableB-2) = 0x0002. table B-2 boot for watching (configure register bit 00 to 03) Meaning 0x0: Stay in bootstrap status 0x1: Start 0x2 to 0xF from ROM: specify the default boot file boot system, table B-3 Console port rate setting table rate 12-bit 11-bit 9600 0 0 0 4800 0 1 1200 1 0 2400 1 1 1