VNX5200 Unified SNMP Trap Test Question

Hi, 

I logged into the Unisphere VNX Client and went to System > Monitoring and Alerts > Notifications for File menu.

Then, I changed the currently configured trap IP.

After reconnecting the CS MGMT cable, I SSHed into the CS serial port and performed an SNMP trap test.

Why does the following occur?

Please, help me.