Autoboot is disabled and now dropping into ROMMON Cisco 4500x VSS

[Onur SAKLI]

Hello,

********************* CAUTION ************************
* *
* Switch is booting up in VSS mode but *
* startup-config is being ignored. Autoboot is *
* disabled and now dropping into ROMMON. *
* *
* Please configure the switch for not ignoring *
* startup-config if it is needed to work in VSS Mode *
* OR *
* clear VS_SWITCH_NUMBER rommon variable to boot *
* the switch in standalone mode. *
******************************************************

*Feb 17 23:15:18.181: %IOSD_INFRA-5-IFS_DEVICE_OIR: Device usb0 added
*Feb 17 23:15:23.717: %RF-5-RF_RELOAD: Self Reload. Reason: Startup-config ignore not allowed in VSS mode
*Feb 17 23:15:23.749: %SYS-5-RELOAD: Reload requested by Platform redundancy manager. Reload Reason: Startup-config ignore not allowed in VSS mode.umount: /ic stmpfs: not mounted

I didn't try to use the below source but it is not solved can you help me thanks in advance

https://www.cisco.com/c/en/us/support/docs/switches/catalyst-4500-series-switches/116436-technote-product-00.pdf

[marce1000]

 - Could you verify the current value of the config-register with the rommon set command ?

 M.

[Onur SAKLI]

rommon 5 >set
PS1=rommon ! >
RommonVer=15.0(1r)SG12
SupportedFeatures=1
Fa1Enable=1
VS_SWITCH_NUMBER=2
DiagMonitorAction=Normal
BootedFileName=bootflash:cat4500e-universalk9.SPA.03.08.01.E.152-4.E1.bin
ConsecPostPassedCnt=57
RET_2_RTS=21:55:53 UTC Sun Feb 20 2022
RET_2_RCALTS=1645394153
ConfigReg=0x8440

[Leo Laohoo]

---

@Onur SAKLI wrote:

ConfigReg=0x8440

---

That is the wrong value. 

Do this in ROMMON: 

confreg 0x2102

And then reboot the line card.

[Onur SAKLI]

I did, but when I restart and look at the set command, the value does not change

rommon 1 >confreg 0x2102
usage: confreg
rommon 2 >set
PS1=rommon ! >
RommonVer=15.0(1r)SG12
SupportedFeatures=1
Fa1Enable=1
VS_SWITCH_NUMBER=2
DiagMonitorAction=Normal
ConfigReg=0x8440
BootedFileName=flash1:/USER/cat4500e-universalk9.SPA.03.08.01.E.152-4.E1.bin
ConsecPostPassedCnt=59
RET_2_RTS=22:55:29 UTC Sun Feb 20 2022
RET_2_RCALTS=1645397729

[marce1000]

   - Use rommon 1 > ?  , to find correct command syntax (or help command)

 M.

[Onur SAKLI]

rommon 5 >?
alias set and display aliases command
boot boot up an external process
clear clear configurations, use 'clear help' for more info
confreg configuration register utility
date displays the current date and time
dev list the device table with physical device information
dir list filesystem information
help monitor builtin command help
history monitor command history
macstats print management port MAC statistics counters
meminfo main memory information
ping ping utility to determine network connectivity
repeat repeat a monitor command
reset system reset
set show/set environment vars, use 'set help' for more info
sprom serial eprom operations
unalias unset an alias
unset unset a monitor variable
version display Rom Monitor version information
rommon 6 >

[Leo Laohoo]

set ConfigReg=0x2102

NOTE:  Above command is case sensitive. 

If it boots correctly, I want to see the config.  There could be something in the configuration forcing the switch to change config-registry to 0x8000 series.

[Onur SAKLI]

invalid command

rommon 1 >set ?
Set commands:

set interface use 'set interface help' for more info on how
to set IpAddr and other networking parameters

set ip use 'set ip help' for more info on how
to set Gateway variable for default route

set TftpServer use 'set TftpServer help' for more info

To set an arbitrary Rom Monitor variable to some value
please type 'variable=value' directly (without set).
rommon 2 >set Configreg=0x2102
Set commands:

set interface use 'set interface help' for more info on how
to set IpAddr and other networking parameters

set ip use 'set ip help' for more info on how
to set Gateway variable for default route

set TftpServer use 'set TftpServer help' for more info

To set an arbitrary Rom Monitor variable to some value
please type 'variable=value' directly (without set).
rommon 3 >set configreg
Set commands:

set interface use 'set interface help' for more info on how
to set IpAddr and other networking parameters

set ip use 'set ip help' for more info on how
to set Gateway variable for default route

set TftpServer use 'set TftpServer help' for more info

To set an arbitrary Rom Monitor variable to some value
please type 'variable=value' directly (without set).
rommon 4 >

[Leo Laohoo]

---

@Onur SAKLI wrote:

rommon 1 >confreg 0x2102
usage: confreg

---

No, the command was invalid because the next line provided an example of the syntax. 

Please try: 

confreg 2102

[Onur SAKLI]

negative commands

rommon 1 >confreg 2102
usage: confreg
rommon 2 >confreg ?
usage: confreg
rommon 3 >confreg

Configuration Summary :
=> diagnostic mode
=> break/abort has effect
=> console baud: 9600
=> autoboot from: autoboot disabled

do you wish to change the configuration? y/n [n]:

rommon 4 >set
PS1=rommon ! >
RommonVer=15.0(1r)SG12
SupportedFeatures=1
Fa1Enable=1
VS_SWITCH_NUMBER=2
DiagMonitorAction=Normal
ConfigReg=0x8000
BootedFileName=flash1:/USER/cat4500e-universalk9.SPA.03.08.01.E.152-4.E1.bin
ConsecPostPassedCnt=63
RET_2_RTS=03:16:29 UTC Mon Feb 21 2022
RET_2_RCALTS=1645413389
rommon 5 >

[marce1000]

 - What happens if you try : confreg 0x2101

M.

[Onur SAKLI]

invalid command

rommon 4 >confreg 0x2101
usage: confreg
rommon 5 >set
PS1=rommon ! >
RommonVer=15.0(1r)SG12
SupportedFeatures=1
Fa1Enable=1
VS_SWITCH_NUMBER=2
DiagMonitorAction=Normal
ConfigReg=0x8000
BootedFileName=flash1:/USER/cat4500e-universalk9.SPA.03.08.01.E.152-4.E1.bin
ConsecPostPassedCnt=63
RET_2_RTS=03:16:29 UTC Mon Feb 21 2022
RET_2_RCALTS=1645413389
rommon 6 >

[Leo Laohoo]

What is the complete output to the command "set"?

[Onur SAKLI]

The output of the set and the step I followed are as follows where am I making a mistake, thanks

rommon 1 >set
PS1=rommon ! >
RommonVer=15.0(1r)SG12
SupportedFeatures=1
Fa1Enable=1
VS_SWITCH_NUMBER=2
DiagMonitorAction=Normal
BootedFileName=bootflash:cat4500e-universalk9.SPA.03.08.01.E.152-4.E1.bin
ConfigReg=0x8400
ConsecPostPassedCnt=57
RET_2_RTS=21:55:53 UTC Sun Feb 20 2022
RET_2_RCALTS=1645394153
rommon 2 >confreg

Configuration Summary :
=> diagnostic mode
=> use all zero broadcast
=> break/abort has effect
=> console baud: 9600
=> autoboot from: autoboot disabled

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

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

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

Configuration Summary :
=> diagnostic mode
=> use all zero broadcast
=> break/abort has effect
=> ignore system config info
=> console baud: 9600
=> autoboot from: autoboot disabled

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

rommon 3 >set
PS1=rommon ! >
RommonVer=15.0(1r)SG12
SupportedFeatures=1
Fa1Enable=1
VS_SWITCH_NUMBER=2
DiagMonitorAction=Normal
BootedFileName=bootflash:cat4500e-universalk9.SPA.03.08.01.E.152-4.E1.bin
ConsecPostPassedCnt=57
RET_2_RTS=21:55:53 UTC Sun Feb 20 2022
RET_2_RCALTS=1645394153
ConfigReg=0x8440
rommon 4 >clear svnum
Clear commands:

clear boot clear BOOT variable
clear bootldr clear BOOTLDR variable
clear config use 'clear config help' for more info
clear ip use 'clear ip help' for more info
clear issu_boot clear ISSU_BOOT variable
clear swnum clear VS_SWITCH_NUMBER variable
rommon 5 >set
PS1=rommon ! >
RommonVer=15.0(1r)SG12
SupportedFeatures=1
Fa1Enable=1
VS_SWITCH_NUMBER=2
DiagMonitorAction=Normal
BootedFileName=bootflash:cat4500e-universalk9.SPA.03.08.01.E.152-4.E1.bin
ConsecPostPassedCnt=57
RET_2_RTS=21:55:53 UTC Sun Feb 20 2022
RET_2_RCALTS=1645394153
ConfigReg=0x8440

rommon 6 >boot bootflash:cat4500e-universalk9.SPA.03.08.01.E.152-4.E1.bin