cisco ios // essentials

basics | defaults | fw | init | lacp | passwords | setup | ssh

enter power execution mode

    enable

enter configuration mode

conf t

disable/revert some setting e.g.

int vlan1
    shutdown
    no ip address

clear the config on an interface altogether

    default interface fa0/2

resources

https://en.wikipedia.org/wiki/Cisco_IOS

cli

The Cisco Learning Network https://learningnetwork.cisco.com/s/

Cisco Courses https://networklessons.com/cisco

Introduction to Cisco IOS CLI (Command-Line Interface) https://networklessons.com/cisco/ccna-routing-switching-icnd1-100-105/introduction-cisco-ios-cli-command-line-interface

User Mode and Privileged Mode Security https://networklessons.com/cisco/ccna-routing-switching-icnd1-100-105/user-mode-and-privileged-mode-security

Self-Paced Lessons https://learningnetwork.cisco.com/community/learning_center/expert-level-training/ccie-routing-switching/self-paced-lessons