Hi all,
Does Orion NPM do anything special with their ICMP polling? We are monitoring remote locations over MPLS and everything is working.... except one device. The device initially discovers and the initial ICMP only poll works.... then it stops working. Pinging the same IP from the Win2008 R2 that Orion runs on works fine. Netflow on the router the device is connected to show traffic in and out when pinging from the OS. It only shows traffic in when attempting a poll from Orion???
I initially thought it was IPS on the device we are polling that was denying the echo-reply back to our orion host. However pinging from the OS works so I am not so sure. That is, unless Orion doesn't use just a standard echo when doing its polling? We have confirmed the issue is not related to packet size or TTL. Any ideas why Orion could initial discover/ping and pings from the OS work, however, NPM polls are not responded to by the device?
We are able to monitor the switch port the device is connected to and it shows as up... The only anomaly I can see is that the connection to the switch is half-duplex? Is that a clue at all?
Any ideas appreciated. Thanks in advance.
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Colin
Orion Core 2012.1.1, SAM 5.2.0 SP1, NPM 10.3.1, SEUM 1.5.1, IVIM 1.4.1