A plurality of elements is connected to the network including a monitor server, wherein the monitor server includes monitoring means for obtaining {TAIL ~ status information} from {HEAD ~ the plurality} of elements 
A plurality of elements is connected to the network including a monitor server , wherein the monitor server includes monitoring means for obtaining { TAIL ~ status information } from { HEAD ~ the plurality } of elements
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH