VRRP
7750 SR OS Router Configuration Guide Page 217
The following example displays the non-owner interface VRRP configuration:
A:SR2>config># info 
#------------------------------------------
interface "lucy"
            address 10.20.30.40/24
            secondary 10.10.50.1/24
            secondary 10.10.60.1/24
            secondary 10.10.70.1/24
            vrrp 1
                backup 10.10.50.2
                backup 10.10.60.2
                backup 10.10.70.2
                backup 10.20.30.41
                ping-reply
                telnet-reply
                authentication-type password
                authentication-key "testabc"
            exit
        exit
#------------------------------------------
A:SR2>config>#