Free Cheatsheets

This page is my compilation of free Cisco network and voice cheatsheets from the best sources out there.  These "cheatsheets" are full of great information, delivered in a very compact manner, and very useful for a fast review.  Please give their original authors the credit due and visit their respective sites (you'll not regret it).

Please let me know if you have suggestions that I should include!

Cisco Voice Cheatsheets

1. Troubleshooting Cisco IOS Voice - EXCELLENT! (Cisco DocWiki)
2. CUCME (Iwan Hoogendorn, CCIEx4 #13084)
3. CUCM TCP & UDP Port Usage (Iwan Hoogendorn, CCIEx4 #13084)
4. VOIP Basics (Packetlife.net)
5. CVoice (642-436) (Matthew Berry, CCIE #26721)
6. Implementing Cisco IOS Unified Communications / CUCME (Matthew Berry, CCIE #26721)
7. CCIE Voice Cheatsheets (Marcelo Augusto) 
8. SQL Cheatsheet (Very useful when forming CUCM SQL Queries)

Cisco Network Cheatsheets

1. BGP (Packetlife.net)
2. EIGRP (Packetlife.net)
3. First Hop Redundancy (Packetlife.net)
4. IEEE 802.11 WLAN (Packetlife.net)
5. IEEE 802.1X (Packetlife.net)
6. IPsec (Packetlife.net)
7. IPv4 Multicast (Packetlife.net)
8. IPv6 (Packetlife.net)
9. ISIS (Packetlife.net)
10. OSPF (Packetlife.net)
11. PPP (Packetlife.net)
12. RIP (Packetlife.net)
13. Spanning Tree (Packetlife.net)
14. Common Ports (Packetlife.net)
15. IOS IPv4 Access Lists (Packetlife.net)
16. IPv4 Subnetting (Packetlife.net)
17. Frame Mode MPLS (Packetlife.net)
18. NAT (Packetlife.net)
19. QoS (Packetlife.net)
20. VLANs (Packetlife.net)
21. Cisco IOS Versions (Packetlife.net)
22. Physical Termination (Packetlife.net)
23. IP Header (Cisco Learning Network)
24. WiFi Troubleshooting (Cisco Learning Network)
25. Huge Collection of Cisco Tools (BradReese.com)