Hi People, To add some context - we currently use PRTG to monitor around 700 different "sensors" on our various systems which includes UPS's, servers and comms/network equipment etc. Bandwidth/traffic sensors by default are "probed" every 30 seconds and this provides an accurate and timely picture of what is happening on a link. Some of the equipment we monitor is relatively "cheap", fit for it's specific purpose and quite happily responds and is monitored using the above methods. Recently we rolled some of the "not so cheap" MX65W's and MS225 switches and set about configuring the SNMP requirements. We could walk the standard / cloud MIB's and therefore created the required sensors. As stated above the default probe interval is 30 seconds and in the case of the MX65W every second probes returned zero's as the value, in some cases two or three consecutive probes returned zero'. We compared the MX65W outputs to our "cheap" Cisco RV215 AP's - the RV215 are probed at the same interval and never miss a response. We went back to PRTG's developers and asked them why this could be happening? Their response was to increase the probe interval to 60 seconds and the likely cause is the Meraki doesn't update it SNMP counters that often. The 60 sec scan interval has significantly reduced the zero values returned. Is there a definitive answer as to how often MX65W's update SNMP data? Can anyone supply official figures? Regards. Lee.
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