IPSec Peer Backup Behavior in Asymmetric Routing Scenario – NetworkGeekStuff
Pie Chart example
IPsec VPN High Availability with HSRP | INE
Example for Establishing an IPSec Tunnel Using a Tunnel Interface - AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R010 CLI-based Configuration Guide - VPN - Huawei
Example for Configuring Redundancy Control of IPSec Tunnels - AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R009 CLI-based Configuration Guide - VPN - Huawei