The Netflow configuration you posted should be fine, but depending on the platform and IOS it may need some tweaking. I suggest Cacti + Weathermaps for bandwidth monitoring with SNMP. Your free license only includes 100 sensor, so it's not very scalable one you have a decent amount of devices and interface. Change back to 64bit counters in the compatibility options.Īnyway, PRTG is probably not the best tool to SNMP monitor your devices, and also it uses one sensor per monitored interface. select the interfaces you want to monitor. Now it should recognize your device and list all the interfaces. In the device settings in PRTG, go to SNMP COMPATIBILITY OPTIONS and change to 32-bit counters. I tried to add myself the SNMP Traffic sensor (I assume you are using that one in PRTG) and didn't work at first but I found a workaround: This will confirm that the Cisco device is receiving the SNMP request from PRTG.Īs an alternative, Paessler offers a free tool called snmptester () that you can install and then check the SNMP connectivity from your server. This debug, if you are not using SNMP apart form this, it's not dangerous, but be sure that you only apply this one ( "debug snmp packets"). The first thing you should do is to debug snmp packets in your Cisco device and try to add the sensor in PRTG, you should see the packet incoming to your Cisco device from the PRTG server IP:ĭec 4 10:28:42.109: SW1: SNMP: Packet received via UDP from 10.11.11.121 on Port-channel3
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