switch startup mode

[knarfoooo]

Hello,

After a power failure my cisco switch (c2950 , version 12.1(11)ea1) started in a mode which was not correct I think.

After logging in with Hyperterminal it showed: switch:

I typed boot and the switch started fine again.

What was that mode? What do I need to type in to boot in "normal" mode ?

tnx

frank

[Ivan Shirshin · Accepted solution]

Hi,

This is a ROMMON mode of the switch. This may occur on power cycle if a boot mode is set to manual.

If the manual boot is disabled, the switch will automatically load the image in its flash file system and boot in IOS mode.

In order to confirm this setting, use these methods:

1. If you are at the ROMmon mode (switch: prompt), issue the set command and observe the output:

switch: set
BOOT=flash:c2950-i6q4l2-mz.121-13.EA1.bin
MANUAL_BOOT=yes

2. If you are at the regular switch# prompt, issue the show boot command and observe the output:

Switch#show boot
BOOT path-list: flash:c2950-i6q4l2-mz.121-13.EA1.bin
Config file: flash:config.text
Enable Break: no
Manual Boot: yes
HELPER path-list: 
NVRAM/Config file
buffer size: 32768

Solution:

If you are at the switch: prompt, perform these steps to allow the switch to boot automatically:

1. Issue the set MANUAL_BOOT no command at the switch: prompt.

   switch: set MANUAL_BOOT no
   switch:

2. Issue the set command to confirm that the value for the MANUAL_BOOT variable is now no.

   switch: set
   BOOT=flash:c2950-i6q4l2-mz.121-13.EA1.bin
   MANUAL_BOOT=no
   

3. Issue the boot command to reload the switch.

   switch: boot flash:c2950-i6q4l2-mz.121-13.EA1.bin
         
   
    Loading "flash:c2950-i6q4l2-mz.121-13.EA1.bin"...###########
    ###########################################################
   
   !--- Output suppressed ---
   
   

If you are at the switch# prompt, perform these steps to allow the switch to boot automatically.

1. Enter the Global Configuration Mode. Issue the no boot manual to inform the switch to boot automatically.

   Switch#configure terminal
   Enter configuration commands, one per line. End with CNTL/Z.
   Switch(config)#no boot manual
   

2. Go back to the privileged EXEC mode and save the configuration with the write memory command.

   Switch(config)#end
   Switch#
   Switch#write memory
   Building configuration...
   [OK]

3. Verify the boot parameters with the show boot command, and verify whether Manual Boot is set to no.

   Switch#show boot
   BOOT path-list: flash:c2900XL-h-mz-112.8-SA5.bin
   Config file: flash:config.text
   Enable Break: no
   Manual Boot: no
   HELPER path-list: 
   
   !--- Output suppressed ---
   
   

4. Reload the switch.

Doc:

http://www.cisco.com/en/US/products/hw/switches/ps628/products_configuration_example09186a0080169627.shtml#concept13

Kind Regards,
Ivan

**Please grade this post if you find it useful.

[knarfoooo]

Great!

thanks for helping Ivan

frank

[Ivan Shirshin]

welcome! Appreciate if you could grade useful posts and mark this thread as solved.

[Chowdary Jaladi]

hi 

can u please tell me the  commands for setting automatic boot of image for Cisco Nexus switch

[Chowdary Jaladi]

hi 

Can u please tell me the  commands for setting automatic boot of image for Cisco Nexus switch

[Mark Malone]

Hi
If you have 2 sups , you do it like below , if its just 1 , you only need sup1
If not sup based and just nodular its the same just without the sup-1 at the end

XXX7K# sh run | i boot
boot kickstart bootflash:/n7000-s1-kickstart-npe.6.2.20.bin sup-1
boot system bootflash:/n7000-s1-dk9-npe.6.2.20.bin sup-1
boot kickstart bootflash:/n7000-s1-kickstart-npe.6.2.20.bin sup-2
boot system bootflash:/n7000-s1-dk9-npe.6.2.20.bin sup-2

# sh boot
Current Boot Variables:

sup-1
kickstart variable = bootflash:/n7000-s1-kickstart-npe.6.2.20.bin
system variable = bootflash:/n7000-s1-dk9-npe.6.2.20.bin
sup-2
kickstart variable = bootflash:/n7000-s1-kickstart-npe.6.2.20.bin
system variable = bootflash:/n7000-s1-dk9-npe.6.2.20.bin
No module boot variable set

Boot Variables on next reload:

sup-1
kickstart variable = bootflash:/n7000-s1-kickstart-npe.6.2.20.bin
system variable = bootflash:/n7000-s1-dk9-npe.6.2.20.bin
sup-2
kickstart variable = bootflash:/n7000-s1-kickstart-npe.6.2.20.bin
system variable = bootflash:/n7000-s1-dk9-npe.6.2.20.bin
No module boot variable set