Troubleshooting commands for Site to Site VPN (IKEV1) - Part 1

This video is to help you troubleshoot your site to site VPN problems. There will be 2 parts of this session. This is part 1 and covers what commands are required to troubleshoot Phase 1 of an Ikev1 site to site VPN.
This can be a really useful video for people working at service desk/IT desk and deal with firewalls or VPNs as a part of their job. There are no better commands than explained in this video.

Understand how an IPSEC VPN comes up, what information is shared in each packet. After watching these videos you should have sufficient information to answer any question on the topic.

1. 1st Packet:    • IPSEC 6 packet Exchange Part 2- Sendi...  
2. 2nd packet:    • IPSEC 6 packet Exchange Part 3 - Send...  
3. 3rd packet:    • IPSEC 6 packet Exchange Part 4 - Send...  
4. 4th packet:    • IPSEC 6 packet Exchange Part 5 - Send...  
5. 5th & 6th packet:    • IPSEC 6 packet Exchange Part 6 - Send...  
Extra one: How cookies are generated :    • IPSEC 6 packet Exchange Part 1 - Cook...  

Then you would like to understand how to troubleshoot the problems:

1. MM_WAIT_MSG2 :    • S2E1_IPSEC VPN - MM_WAIT_MSG2 - How t...  
2. MM_WAIT_MSG3:    • S2E2_IPSEC VPN - MM_WAIT_MSG3 - How t...  
3. MM_WAIT_MSG4:    • S2E3_IPSEC VPN - MM_WAIT_MSG4 - How t...  
4. MM_WAIT_MSG5 & MSG6:    • S2E4_IPSEC VPN - MM_WAIT_MSG5 and MSG...  

Command to troubleshoot a VPN problem and how to undertand their output?
   • Troubleshooting commands for Site to ...  


What is Aggressive mode and how it is different than Main mode? How does it work?
   • S3E1_IPSEC VPN_Aggressive Mode_Why? a...  

How to cofigure Cisco Anyconnect? Understand the concepts.
   • Understanding & Configuring Cisco Any...  

What is client Profile in Cisco Anyconnect and what is its importance?
   • Cisco Anyconnect - Overview of Client...  

How to troubleshoot Cisco Anyconnect related Problems?
   • Cisco Anyconnect Troubleshooting - Pa...