Need a Cisco commands cheat sheet that doesn’t stop at the basics? This one covers over 200 IOS commands across switches and routers, grouped by topic so you’re not hunting through a 12-page manual mid-lab.
Hostnames and passwords. VLANs and trunking. OSPF, EIGRP and RIP. ACLs, NAT, DHCP, PPP and Frame Relay. If it’s a command you’d type into a Cisco device during a CCNA lab or a real job, it’s probably in here.
Why a Cisco commands cheat sheet still matters
Look, you could just Google every command as you hit it. Plenty of people do. But that’s slow, and it breaks your flow mid-lab, especially during a timed CCNA practice exam or when a client’s waiting on a config change.
Here’s the thing. Cisco IOS syntax doesn’t always follow logic you’d guess on your own. enable secret hashes the password. enable password doesn’t. One typo in an ACL statement and you’ve locked yourself out of a router over SSH. A cheat sheet next to your keyboard catches that before it costs you a lab reset, or worse, a maintenance window.
What’s covered, by topic
The full PDF groups commands the way you’d actually use them on the job, not alphabetically. A quick look at what’s inside:
Switch and router basics
SW1(config)#hostname SW1
SW1(config)#enable secret cisco
SW1(config)#service password-encryption
SW1(config)#banner motd $ ... $
R1(config)#crypto key generate rsa
SW1#copy running-config startup-configVLANs, trunking and port security
SW1(config)#vlan 10
SW1(config-if)#switchport mode trunk
SW1(config-if)#switchport trunk allowed vlan add 10
SW1(config-if)#switchport port-security maximum 1Routing (static, RIP, OSPF, EIGRP)
R1(config)#ip route 0.0.0.0 0.0.0.0 199.1.1.1
R1(config)#router ospf 10
R1(config-router)#network 10.0.0.0 0.255.255.255 area 0
R1(config)#router eigrp 121ACLs, NAT and DHCP
R1(config)#access-list 101 permit ip any any
R1(config-if)#ip access-group 101 in
R1(config)#ip nat inside source list 3 pool PUB overload
R1(config)#ip dhcp pool MY_POOLVerification commands (the ones you’ll type most)
SW1#show running-config
SW1#show ip interface brief
SW1#show vlan brief
SW1#show cdp neighbors
R1#show ip routeOlder WAN protocols like PPP (CHAP/PAP) and Frame Relay are in there too, since some CCNA and networking courses still reference them and older exam banks still test them. If your track doesn’t cover WAN encapsulation, skip that section entirely, it’s clearly labelled.
Switch vs router commands: what’s different
Most of the syntax is identical between switches and routers since both run Cisco IOS. A few things only apply to one:
| Feature | Switch | Router |
|---|---|---|
| VLANs and trunking | Yes | Only with router-on-a-stick subinterfaces |
| Spanning Tree (STP) | Yes | No |
| Routing protocols (OSPF, EIGRP, RIP) | No (unless L3 switch) | Yes |
line aux 0 | No, switches don’t have an aux port | Yes |
| Port security | Yes | No |
Good to know before you start memorising, since half the “why doesn’t this command work” confusion at the CCNA level comes down to trying a switch command on a router or the other way round.
What’s inside the PDF
- Over 200 Cisco IOS commands, grouped into 12 topic sections: basic config, working environment, SSH, port security, VLANs, trunking, VTP, STP, CDP, router basics, static and dynamic routing (RIP/OSPF/EIGRP), ACLs, DHCP, PPP, Frame Relay, and NAT
- A verify and troubleshoot table under most sections, so you know which
showcommand confirms your config actually worked - Real syntax examples, not just command names, pulled from working switch and router configs
- Notes on option ranges where it matters (ACL number ranges, RSA key bit sizes, VTP modes)
- Format: multi-page PDF, organised by topic for quick lookup during labs
Who it’s for
- CCNA 200-301 candidates who want one reference instead of flipping through a 900-page study guide mid-lab
- Network+ students working through switching, routing and security domains
- Junior network engineers and help desk staff who need a fast syntax check
- Anyone rebuilding a home lab on EVE-NG or Packet Tracer and forgetting the OSPF network wildcard mask for the third time this week
Intermediate level. You’ll get the most out of it if you already know what a VLAN or an ACL is for, this is a syntax reference, not a concept explainer. If you’re still building that foundation, start with our OSI Model cheat sheet and CCNA 200-301 study notes first.
Want to actually practise these commands instead of just reading them? Our CCNA Lab Workbook gives you 75+ labs on EVE-NG and Packet Tracer built around this exact syntax, VLANs, OSPF, ACLs, NAT and all. For live instruction, SMEnode Academy’s CCNA course walks through the same commands with an instructor watching your config in real time.
