Unset Boot Parameter ROMMON Variable on Cisco Supervisor Engine 7-E Using IOS Command Line Interface

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Updated:September 29, 2017

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Unsetting the Boot Parameter Using IOS Command Line Interface

Unsetting the Boot Parameter Using IOS Command Line Interface

Effective with Cisco IOS-XE 3.2.3SQ, platform environment variables such as BootParam can be modified from the IOS Command Line Interface. This procedure can be performed using Telnet or Management IP, which is a convenient way to modify the variables.

The following are the boot parameter variables available:

  • BootParam1
  • BootParam2
  • BootParam3
  • BootParam4
  • BootMode
Important:

You must perform this procedure on both active and standby Supervisor Engine 7-E card because this procedure is applicable only for the active Supervisor Engine 7-E. Hence you need to repeat this procedure on the standby Supervisor Engine 7-E card as well.

Before You Begin
  • Ensure that you have access to Cisco RF Gateway 10 Supervisor Engine 7-E through Management IP.
Procedure
     Command or ActionPurpose
    Step 1 enable


    Example: 
    RFGW-10> enable
     

    Enables privileged EXEC mode.

     
    Step 2 show platform environment variables


    Example: 
    RFGW-10# show platform environment variables
     

    Verify if boot parameter variables and BootMode environment variables are set.

    The following is displayed if the boot parameter variables are set: 

    BootParam1="ip=::::nova:eth0:off rw disableautoreboot"
BootParam2="BootMode=0"
BootMode="0"
     
    Step 3 platform environment variables unset BootParamvariable


    Example: 
    RFGW-10# platform environment variables unset BootParam1 
RFGW-10# platform environment variables unset BootParam2
RFGW-10# platform environment variables unset BootParam3
RFGW-10# platform environment variables unset BootParam4
     

    Unset the boot parameter variables.

    • BootParamvariable - The boot parameter variables. The following are the boot Parameter variables available:
      • BootParam1
      • BootParam2
      • BootParam3
      • BootParam4
      • BootMode
    Note    Skip this step, if boot parameter variables are not set.

     
    Step 4 show platform environment variables


    Example: 
    RFGW-10# show platform environment variables
     

    Verify if the boot parameter variables are now unset.

     
    Step 5 reload


    Example: 
    RFGW-10# reload
     

    Reload the SUP7.

    Note    Reload ensures that the boot parameter variables are unset.
     

    The following is the example of the show platform environment variables command, if boot parameter variables are set. 

    PS1="rommon ! >"
SupportedFeatures="1"
SkipDiagsAlways="1"
CodeSignDisable="1"
BootParam1="ip=:::va:eth0:off rw disableautoreboot"
BootParam2="BootMode=0"
ConfigReg="0x2102"
DiagMonitorAction="Normal"
RommonVer="15.0(1r)SQ(315)"
BOOT="slot0:rfgwk10-entservicesk9.03.03.01.SQ.150-2.SQB1.bin,12;bootflash:rfgwk10-entservicesk9.03.02.00.SQ.150-2.SQA.bin,12;"
RET_2_RTS="01:07:15 EST Tue Feb 4 2014"
BootedFileName="slot0:rfgwk10-entservicesk9.03.03.01.SQ.150-2.SQB1.bin"
ReqClearAutoboot="1"
BootStatus="Success"
RET_2_RCALTS=""

    The following is the example of the show platform environment variables command if boot parameter variables are unset. 

    PS1="rommon ! >"
SupportedFeatures="1"
SkipDiagsAlways="1"
CodeSignDisable="1"
ConfigReg="0x2102"
DiagMonitorAction="Normal"
RommonVer="15.0(1r)SQ(315)"
BOOT="slot0:rfgwk10-entservicesk9.03.03.01.SQ.150-2.SQB1.bin,12;bootflash:rfgwk10-entservicesk9.03.02.00.SQ.150-2.SQA.bin,12;"
RET_2_RTS="01:07:15 EST Tue Feb 4 2014"
BootedFileName="slot0:rfgwk10-entservicesk9.03.03.01.SQ.150-2.SQB1.bin"
ReqClearAutoboot="1"
BootStatus="Success"
RET_2_RCALTS=""
    What to Do Next

    This procedure unsets the boot parameter on a single Supervisor Engine 7-E card. So repeat this procedure on the other Supervisor Engine 7-E card.

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