Sorry but this is quite difficult in The Dude
First you have to add such probe (type function)
if(oid_raw(concetenate("1.3.6.1.2.1.2.2.1.8.",array_element(oid_column("1.3.6.1.2.1.2.2.1.1"),array_find(oid_column("1.3.6.1.2.1.2.2.1.2"),"GigabitEthernet3/6"))))=1, "", "Interface GigabitEthernet3/6 down")
so if you want monitor links on 48 port switch this is quite easy beacuse you just have to add 48 such probes :/.
Just change GigabitEthernet3/6 with snmp name of your interface.
passing parameters to function in such case can save lot of work but this is not working now