I want to monitor 2-3 ports on my switch (cisco/qtech) using SNMP. I Create a map, put my switches into this map. Then create links (lines) between this switches. Then i go to configurations -> maps, select my map, select the link (line) between two switches. Then i create a trigger, if port port state change, the map will paint this link (line) from green to red. It works, but after 1-2 minute this link (line) become green again. Why it happened?