WS-C4510R-E - Bypassing Startup Configuration via ROMMON

[TULLYMCFARLAND]

Hello,

I would like to know how to bypass startup configuration for WS-C4510R-E model switches. 

I am able to access ROMMON. Where do I go from here? 

Again I need the instructions for WS-C4510R-E specifically as they are different from the WS-C4500s I have previously inquired about. 

V/R

Tully

[marce1000]

 - @TULLYMCFARLAND   Ref : https://www.cisco.com/c/en/us/support/docs/routers/10000-series-routers/50421-config-register-use.html
                                          Set the config register to 0x2142

  M.

[TULLYMCFARLAND]

Okay so I was able to set the confreg to 0x2142 using the following prompt choices: 

rommon 13 >confreg

Configuration Summary :
=> diagnostic mode
=> use net in IP bcast address
=> load rom after netboot fails
=> use all zero broadcast
=> ignore system config info
=> console baud: 9600
=> autoboot from: commands specified in 'BOOT' environment variable

do you wish to change the configuration? y/n [n]: y
disable "diagnostic mode"? y/n [n]: y
disable "use net in IP bcast address"? y/n [n]: y
disable "load rom after netboot fails"? y/n [n]: n
disable "use all zero broadcast"? y/n [n]: y
enable "break/abort has effect"? y/n [n]: n
disable "ignore system config info"? y/n [n]: n

change console baud rate? y/n [n]: n

change the boot characteristics? y/n [n]: n

Configuration Summary :
=> load rom after netboot fails
=> ignore system config info
=> console baud: 9600
=> autoboot from: commands specified in 'BOOT' environment variable

do you wish to save this configuration? y/n [n]: y
You must reset or power cycle for new configuration to take effect

Wish me luck. 

VR

Tully

[TULLYMCFARLAND]

Okay that did not work:

rommon 14 >set
PS1=rommon ! >
RommonVer=12.2(44r)SG5
CV=
PV=
SV=
IS=
BOOT=bootflash:cat4500e-entservicesk9-mz.152-2.E8.bin,1;
RET_2_RCALTS=
BootedFileName=bootflash:cat4500e-entservicesk9-mz.152-2.E8.bin
ConsecPostPassedCnt=4
ConfigReg=0x2142
rommon 15 >reset

Resetting .......

rommon 16 >

Five minutes later...

User Access Verification

Username:
% Username: timeout expired!

It didn't work unfortunately.

VR

Tully

[Leo Laohoo]

In ROMMON, enter the following:

confreg 0x2142

And then reboot. 

When the switch boots into OS, do not forget to reset the config-registry back to the correct settings of either 0x2101 or 0x2102.

[TULLYMCFARLAND]

Did not work. 

Type control-C to prevent autobooting.
. . . . .

******** The system will autoboot now ********

config-register = 0x2102
Autobooting using BOOT variable specified file.....

Could not find a valid file in BOOT environment variable.
BOOT variable can be set from IOS. To find currently set
Rom Monitor variables, please type 'set' command.

For help on choosing a boot method, type 'confreg' command.
rommon 1 > [interrupt]

rommon 1 > [interrupt]

rommon 1 >confreg 0x2142
usage: confreg
rommon 2 >set
PS1=rommon ! >
RommonVer=12.2(44r)SG5
Fa1Enable=1
RET_2_RTS=00:30:49 UTC Sun Jan 10 2010
CV=
RET_2_RCALTS=
ConfigReg=0x2102
DiagMonitorAction=Normal
SR=
TAG=
SSUP=
PV=
SV=
IS=
BOOT=bootflash:cat4500e-entservicesk9-mz.152-2.E8.bin,1;
BootedFileName=bootflash:cat4500e-entservicesk9-mz.152-2.E8.bin
ConsecPostPassedCnt=68
rommon 3 >