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A Cisco Catalyst 2940, 2950, 2955, 2900XL, 3550, 3500XL, or 3750 switch does not boot automatically due to the manual boot setting

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Core issue

When the manual boot feature is enabled, it interrupts the boot sequence and puts the switch at a switch: prompt.

Resolution

To completely boot the switch, issue the boot command.

For the switch to boot automatically, the manual boot feature must be disabled. To disable the feature, perform these steps:

  1. To verify the current setting, issue the show boot command at the EXEC prompt or the set command at the switch: prompt.

    These are examples of the output from these commands:


    Switch#show boot
    BOOT path-list: flash:c2900XL-h-mz-112.8-SA5.bin
    Config file: flash:config.text
    Enable Break: no
    Manual Boot: yes
    HELPER path-list:
    NVRAM/Config file
    buffer size: 32768

    switch:set
    BOOT=flash:c2900XL-h-mz-112.8-SA5.bin
    MANUAL_BOOT=yes

  2. To set the switch to boot automatically, issue the no boot manual global configuration command.

  3. Return to the EXEC prompt and issue the write memory command to save the configuration, as shown in this example:
    Switch(config)#no boot manual
    Switch(config)#end
    Switch#
    Switch#write memory
    Building configuration...
    [OK]

  4. Alternatively, the configuration can be changed at the switch: prompt. Issue the MANUAL_BOOT=no command, which is case sensitive.

    Note: The boot command must be issued to boot the switch the first time after the MANUAL_BOOT=no command has been issued.

    This is an example:


    switch: set
    BOOT=flash:c2900XL-h-mz-112.8-SA5.bin
    ENABLE_BREAK=yes
    MANUAL_BOOT=yes
    switch: MANUAL_BOOT=no
    switch: boot
    Loading "flash:c2900XL-h-mz-112.8-SA5.bin"...

  5. To verify the boot parameters, issue the show boot command again, as shown in this example:
    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:
    ..
    Switch#

For additional information, refer to the Switch Not Booting Automatically, Needs a Manual Boot at the ROMMON (switch: Prompt) section of Upgrading Software in Catalyst 2900XL and 3500XL Switches Using the Command Line Interface.

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