Been playing with LoadRunner 7.02 for few months already. Here's the situation, I'm doing a performance test for mySAP EBP Application within the intranet and theres no firewall or anything blocking the protocols. I tried to monitor the network delay time for 3 different locations of load generator but only 1 location or load generator responded back with the data. The other 2 blank(no data was captured). All 3 locations are with the LR agent running and serving. Note that the other monitoring, like transactions, server resources werks just fine. Does anybody had this problem before or knows the workaround. Thanks in advance for any answer.
If I am not mistaken, LR 7.02 makes use of ICMP (effectively traceroute) for the collection of network performance data. ICMP is low priority in all networks and many people disable this protocol on critical hosts to prevent denial of service attacks based upon PING (which also uses ICMP).
Make sure ICMP is enabled on all of the hosts in question.