Were running on Spectrum 9.2 on Linux... We are seeing a lot of devices that stop responding to polls and seem to get stuck in that state. We can communicate to the device just fine, though. If we select the alarm in Spectrum and Poll it, it returns successful, and the alarm clears a few seconds later. After reading about a similar problem here on the list, we did a tcpdump on the Spectrum Server filtering for a host that was in this state. After about 20 minutes, we had captured 0 packets. This device is set to the default 300 second poll interval. At this point, I manually did a "Poll" on this device, it returned successful and the alarm cleared. At that time, the tcpdump incremented to 4 packets (an SNMP get for SysUpTime, a reply, then a second SNMP request for another OID I didn't recognize, then another reply). So, it appears that Spectrum had given up on polling this device?
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