Cisco CCNA Commands 2026 | CLI Cheat Sheet, Practice & Study Guide

Cisco CCNA Commands
2026 | CLI Cheat Sheet,
Practice & Study Guide
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Updated 2026 Questions and Answers
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, Configure Networking Get IPv6 address (and default (config-if)# ipv6 address autoconfig [default]
route) via autoconfig


Configure Networking Set hostname transmitted as dhcp (config-if)# ip dhcp client client-id asccii SW2
client to SW2


Configure Networking Configure both interfaces at once (config)# interface g1/0 - 2


Configure Networking En- or Disable interface. Often (config-if)# [no] shutdown
shutdown is the default




Configure Networking Set 10.23.42.1 as the default (config)# ip default-gateway 10.23.42.1
gateway


Configure Networking Add static route via next hop or (config)# ip route 10.20.30.0 255.255.255.0 {1.2.3.4,e0/0} [ad]
interface


Configure Networking You can also set both (config)# ipv6 route 2001:41d0:8:e115::/64 [g1/1] [next hop]


Configure Networking Create a static host entry on this (config)# ip host the-space.agency 178.32.222.21
device


Configure Networking Globally enable ipv6 routing (config)# ipv6 unicast-routing


Basic Network Troubleshooting Show routes and how # show ip[v6] route [static]
they were learned


Basic Network Troubleshooting Show interfaces # show ip[v6] interface [if-name]
ip/arp/icmp/nd... configuration


Basic Network Troubleshooting Only show ip, status, and # show ip[v6] interface brief [if-name]
operational status


Basic Network Troubleshooting Similar to show ip int # show protocols [if-name]
brief, w/ cidr, w/o ok/method