Table of Contents
What is configuration register is 0xf?
Config-Register is basically a hexadecimal or decimal value that represents. the 16-bit configuration register value that will be used the next time the switch is. restarted. The value range is from 0x0 to 0xFFFF (0 to 65535 in decimal).
What is configuration register?
The Configuration Register. When a router starts up it needs to know which software to load and which configuration file to use. The way it determines these two things is by looking at its configuration register setting and its startup configuration in nonvolatile RAM (NVRAM).
What is 0x2102 config register?
The factory-default setting for the configuration register is 0x2102. This indicates that the router should attempt to load a Cisco IOS software image from Flash memory and load the startup configuration.
How do I find my config register?
To view the current setting of the configuration register, establish a console or Telnet session with the router. Issue the show version command, and input the contents into the Output Interpreter.
How do I register my Cisco router?
Hi, AFAIK, you can go to www.cisco.com and chose “Register” link (upper right corner on the main page). Then you fill the form (including chosing your login ID and password) and get a basic access to the Cisco web pages.
What are Cisco IOS registers?
Cisco IOS routers and switches use a configuration register for some specific settings. These are settings that are not stored in the startup or running configuration. There are 16 bits (4 hexadecimal digits) reserved for the configuration register.
What is default configuration register?
The default value of Config Register is 0x2102. With Configuration Register 0x2102 value, the router boots from NVRAM and the normal router precedures works. The configuration stored in NVRAM is the startup configuration. So, if we need to bypass this configuration, we can change the default value.
How do I change Confreg settings?
There are two way to change Config Register on a router. This can be done both in Rommon mode and in configuration mode. In Rommon mode, it can be change with “confreg” command. Below, we are changing Configuration Register as 0x2142.
What is break sequence for Cisco?
Standard Break Key Combinations
| Software | Platform | Try This |
|---|---|---|
| Telnet | N/A | Ctrl-], then type send brk |
| Telnet to Cisco | IBM Compatible | Ctrl-] |
| Teraterm | IBM Compatible | Alt-b |
| Terminal | IBM Compatible | Break |
What is config register in Cisco?
Configuration Register is a special 16 bits value that can be configured in Cisco routers. It is mainly used in three cases; To determine how the router boots. To determine boot options. To set console speed.
How do I register my Cisco equipment?
In your web browser, go to the Cisco Product License Registration website: www.cisco.com/go/license. Enter your Product Authorization Key (PAK). Click “Fulfill Single PAK” to continue.
What is configuration register in Cisco?
What is 0x2142 config register?
Answer: B) It is used to bypass the configuration in NVRAM. Explanation: The default configuration setting is 0x2102, which tells the router to load the IOS from flash and the configuration from NVRAM. 0x2142 tells the router to bypass the configuration in NVRAM so that you can perform password recovery.
Which command displays the configuration register setting?
Explanation: The show version command provides you with the current configuration register setting.
How do I change the config register value in Rommon mode?
In Rommon mode, it can be change with “confreg” command. Below, we are changing Configuration Register as 0x2142. After this configurationi we should reset the router to use this new value,or to force the router boot through this config register.
How do I change the configuration register on a Cisco router?
To change the configuration register settings from the Cisco IOS CLI, complete the following steps:
- Connect a terminal or PC to the router console port.
- Configure your terminal or terminal emulation software for 9600 baud (default), 8 data bits, no parity, and 2 stop bits.
- Power on the router.
What is the default value of config Register 0x2102?
The default value of Config Register is 0x2102. With Configuration Register 0x2102 value, the router boots from NVRAM and the normal router precedures works. The configuration stored in NVRAM is the startup configuration.
Is 0xF the correct configuration register value for this switch?
No, 0xF is the proper value for this device. What is the output of “show boot” from this switch? 08-24-2009 11:28 AM 08-24-2009 11:28 AM As Joe has pointed out very correctly, the value 0xF is a correct configuration register value for a switch.
What is the boot field of the configuration register?
The lowest four bits of the configuration register (bits 3, 2, 1, and 0) form the boot field. The boot field determines if the router boots manually, from ROM, or from Flash or
What is the value range of the configuration register?
The value range is from 0x0 to 0xFFFF (0 to 65535 in decimal). The lowest four bits of the configuration register (bits 3, 2, 1, and 0) form the boot field. The boot field determines if the router boots manually, from ROM, or from Flash or