【NGAF】IPSEC VPN Connection System Log Prompts “No proposal is chosen”
Issue Description
NGAF build IPSec VPN with NGAF or Third Party device failed. Check system log found out error message "No Proposal is chosen"
Error/Warning Information

Handling Process
- According to the error message in NGAF, negotiation in phase 2 failed.
- Check the phase 2 setting.
Path: Network > IPSecVPN > IPSecVPN > Phase 2

- Found the Phase 2 security proposal setting inconsistent.
- Change the security proposal to consistent then vpn able to build up.
Root Cause
Inconsistent security proposal setting.
Solution
Change the security proposal setting in either device.