1. An NMS connected to 10 MBPS ethernet LAN is monitoring a network comprising routers, hubs, workstations. There are 10,000 nodes in network to monitor. It sends SNMP query to each station once a minute and receives a response when the stations are up. Assume that an average frames size is 1000 bytes long for get-request and response messages. a) What is maximum traffic load on LAN that has NMS b) Assume Ethernet LAN operates at maximum frequency of 40% throughput. What is the overhead (SNMP packets/total packets) due to network monitoring?

2. In above problem, assume network comprises 10 sub networks, an RMON monitoring each subnet. a) Design a heartbeat monitoring system, using RMONs, that indicates failures to NMS within a minute of failure. b) What is monitoring load on each subnet? c) If NMS still expected to detect any failure within 1 minute of occurrence, what is overhead on LAN to which NMS is connected due to this traffic?