Tag Archive | "2142"

An explanation for all the values of the configuration register in Cisco


Today I want to highlight the issue known in part when a majority of the configuration register in Cisco devices and their importance in the Troubleshoot
Majority knew this entry through the Password Recovery do the work and know that the value 2142 is dedicated to restore the password in Cisco devices and of course there are other values we will identify them now

 What is the benefit of the configuration register?
This value is the starting point in Cisco devices and any error which generates many problems in the work Router is set for the router several things, including
1 – from anywhere will give up any of the Router ROMmoc or from the NetBoot
2 – provide some additional options during the boot process, such as ignoring the settings from the Download NVRam or disable the messages start to take off
3 – determine the speed of the center console or to differentiate between the Baud rate me
And so that we can determine the current value of the Router or SWiSH Max, we left it
 Show Version

We can see in the end it holds the value 2102, a normal value for all Cisco devices means the
Normal boot from the flash in case of failure to quit would be to boot from the ROMmon addition to that it tells the Router to download the settings from the NVRam Router and finally tell that the speed of the console Port is 9600
As for how to change this value is very simple and all Maalina to write the following command with the new value

Can through this table to identify all the values that are available and the meaning of each value of

 

Router Behavior

Configuration Register  

Ignores break
9600
console baud

0×102

1200 baud rate

0×1202

Boots into bootstrap
Ignores break
Boots into ROM if initial boot fails
9600
console baud rate

0×2101

Ignores break
Boots into ROM if initial boot fails
9600
console baud rate default value for most platforms

0×2102

Boots into ROMmon
19200
console speed

0×2120

Ignores break
Boots into ROM if initial boot fails
19200
console baud rate

0×2122

NetBoot
Ignores break
Boots into ROM if initial boot fails
19200
console speed

0×2124

Ignores break
Boots into ROM if initial boot fails
9600
console baud rate
Ignores the contents of Non-Volatile RAM (NVRAM) (ignores configuration)

0×2142

Ignores break
Boots into ROM if initial boot fails
4800
console baud rate

0×2902

Ignores break
Boots into ROM if initial boot fails
38400
console baud rate

0×2922

Ignores break
Boots into ROM if initial boot fails
57600
console baud rate

0×3122

Ignores break
Boots into ROM if initial boot fails
2400
console baud rate

0×3902

Ignores break
Boots into ROM if initial boot fails
115200
console baud rate

 0×3922

Posted in CiscoComments (26)

Loading

Keep in Touch

  • Subscribe our Newsletter




  • Follow me on Twitter
    Facebook Google Yahoo XML
  • Seo Packages
    What is seo - seo tips