The master USG configuration
hrp enable
hrp interface Eth-Trunk2 remote 10.12.0.30 // hrp interface connect to peer device
hrp track interface 40GigabitEthernet5/0/0 //track uplink interface
hrp track interface 40GigabitEthernet5/0/1 //track downlink interface
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The standby USG configuration
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hrp enable
hrp standby-device
hrp interface Eth-Trunk2 remote 10.12.0.29
hrp track interface 40GigabitEthernet5/0/0
hrp track interface 40GigabitEthernet5/0/1