I am trying to figure out how the probing for network graph happens, example if there is this COncord Server that polling data, which service ports is being used? is it snmp port?
As curious to know how they probe and draw the network graph.
Thanks in advanced.
dear cindylee27 ,
Yes you were correct.Probing will happen for SNMP.Im not very sure about concord, but it should also happen in the same way.
Any other software , Mrtg,Cacti,Whatsup, all are using SNMP and they will be sampling the data flow rate on predefined intervals( for example MRTG will do the same for every 5 mins by default).
For polling the input and output values it will be using respective OIDs.Then there are calculateions and tools to fiureout the graph.
This is realy intresting topic if u get into it.All the best.