iCall for working as if LLCF (4EA Interface)

Hi muntae_kim, have you tested this and it works and you're asking if this is an agreeable solution, or are you asking if it will work as you've specified? I think you said "working solution" so if that's the case, it shouldn't be a problem. But there are ways to significantly reduce the complexity of what you've built. I haven't tested the below, so you'll want to study and test (and likely tweak) what I've written, but it should get you on your way (again...test in a lab!)

###
### begin user_alert.conf
###
alert interface_1_1_down "Link: 1.1 is DOWN" {
    exec command="tmsh generate sys icall event interface_manager context { { name action value disabled } { name interface value 1.1 } }"
}
alert interface_1_2_down "Link: 1.2 is DOWN" {
    exec command="tmsh generate sys icall event interface_manager context { { name action value disabled } { name interface value 1.2 } }"
}
alert interface_2_1_down "Link: 2.1 is DOWN" {
    exec command="tmsh generate sys icall event interface_manager context { { name action value disabled } { name interface value 2.1 } }"
}
alert interface_2_2_down "Link: 2.2 is DOWN" {
    exec command="tmsh generate sys icall event interface_manager context { { name action value disabled } { name interface value 2.2 } }"
}
alert interface_1_1_up "Link: 1.1 is UP" {
    exec command="tmsh generate sys icall event interface_manager context { { name action value enabled  } { name interface value 1.1 } }"
}
alert interface_1_2_up "Link: 1.2 is UP" {
    exec command="tmsh generate sys icall event interface_manager context { { name action value enabled } { name interface value 1.2 } }"
}
alert interface_2_1_up "Link: 2.1 is UP" {
    exec command="tmsh generate sys icall event interface_manager context { { name action value enabled } { name interface value 2.1 } }"
}
alert interface_2_2_up "Link: 2.2 is UP" {
    exec command="tmsh generate sys icall event interface_manager context { { name action value enabled } { name interface value 2.2 } }"
}
###
### end user_alert.conf 
###

###
### begin icall objects
###
sys icall script interface_manager {
    app-service none
    definition {
        foreach var { action interface } {
            set $var $EVENT::context($var)
        }
        switch ${interface} {
            "1.1" {
                tmsh::modify /net interface 1.2 ${action}
                tmsh::modify /net interface 2.1 ${action}
                tmsh::modify /net interface 2.2 ${action}
            }
            "1.2" {
                tmsh::modify /net interface 1.1 ${action}
                tmsh::modify /net interface 2.1 ${action}
                tmsh::modify /net interface 2.2 ${action}
            }
            "2.1" {
                tmsh::modify /net interface 1.1 ${action}
                tmsh::modify /net interface 1.2 ${action}
                tmsh::modify /net interface 2.2 ${action}
            }
            "2.2" {
                tmsh::modify /net interface 1.1 ${action}
                tmsh::modify /net interface 1.2 ${action}
                tmsh::modify /net interface 2.1 ${action}
            }
        }
    }
    description none
    events none
}

sys icall handler triggered interface_manager {
    script interface_manager
    subscriptions {
        interface_manager {
            event-name interface_manager
        }
    }
}
###
### end icall objects
###