Whether you are deploying a new switch, repurposing an existing device, or troubleshooting network issues, resetting aRE88PL99ace1Cisco Catalyst 9300 switchRE88PL99ace1and loading a new configuration is a fundamental skill for network professionals.

Step 1: Connect to the Interruptor Console

• Use an RJ-45 or USB mini-B console cable to connect your PC to the switch.

• Open terminal software (PuTTY, SecureCRT, MobaXTerm).

• Configure serial settings: 9600 baud, 8 data bits, Não parity, 1 stop bit, no flow control.

Ponta: If using the USB console port, check your PC's Device Manager to find the correct COM port number.

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Step 2: How to Factory Reset Cisco Interruptor Using CLI (Recommended)

This is the fastest method when you have administrative access to the switch.

1. Enter privileged EXEC mode:

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Interruptor>RE88PL99ace1enable

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2. Erase the startup configuration:

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Interruptor#RE88PL99ace1writeRE88PL99ace1erase

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Confirm by pressing Enter when prompted.

3. Reload the switch:

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Interruptor#RE88PL99ace1reload

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When asked to save the configuration, typeRE88PL99ace1noRE88PL99ace1and press Enter. The switch will now reboot into a factory default state.

Step 3: Reset Cisco Catalyst 9300 Interruptor via ROMMON for Password Recovery

Use this method only if you are locked out of the switch.

1. Power cycle the switch. As it boots,RE88PL99ace1repeatedly press the Mode buttonRE88PL99ace1on the front panel until the switch: prompt appears.

2. At the prompt, enter these commands to boot while ignoring the current configuration:

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switch:RE88PL99ace1SWITCH_IGNORE_STARTUP_CFG=1switch:RE88PL99ace1boot

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3. Once the switch has booted, enter privileged mode (no password is required):

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Interruptor>RE88PL99ace1enable

4. Permanently erase the old configuration and restore the normal boot process:

Interruptor# write eraseSwitch# configure terminalSwitch(config)# no system ignore startupconfig switch allSwitch(config)# endSwitch# reload

Step 4: Steps to Load New Configuration

• From USB:

Switch# copy usbflash0:new-config.txt running-config

• From TFTP:

Switch# copy tftp:///new-config.txt running-config

Step 5: Salvar the Configuration

A newly loaded configuration must be saved to become permanent.

1. Verify the new running configuration:

Switch# show running-config

2. Save the configuration to memory:

Switch# copy running-config startup-config

or the shortcut:

Switch# write memory

Key Considerations

• Backup First: Always back up your current configuration to an external location before performing a reset.

• Smart Licensing: After a factory reset of a Cisco switch, the device will enter Smart Licensing evaluation mode. Make sure to register and activate your licenses according to Cisco's policy to maintain compliance.

Frequently Asked Questions

Q1: How do I clear running configuration on Cisco switch?

Um: The running configuration cannot be cleared directly without reboot. To clear it, erase the startup configuration using write erase and reload the switch. This causes the switch to boot clean, without loading the previous configuration into memory.

Q2: How do I save running config to startup on a Cisco switch?

Um: Use copy running-config startup-config or write memory to save the active running configuration permanently so it loads after reboot.

Get a Quote for Cisco Catalyst 9300 Series

Cisco Catalyst 9300 Series switches are Cisco's lead stackable enterprise access switching platform and as part of the Catalyst 9000 family, are built to transform your network to handle a hybrid world where the workplace is anywhere, endpoints could be anything, and applications are hosted all over the place.

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