For several days we have at the same time an error on one of our Cisco 6509 core switches. This error occurs day after day between 22:07 to 22:15 on SNMP sensors.

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Hi, does the error appear and disappears without any impact? Is the error on all SNMP sensors of the device or only on a specific Sensor? Is the connection to the switch directly over ethernet or over the Internet?


Sep, 2013 - Permalink

from my point of view ... Yes, the error affects all SNMP sensors on the device, the switch is connected directly via Ethernet

Colleagues who diagnosed the problem suggested a switch is heavy load of SNMP requests - 100 per second


Sep, 2013 - Permalink

100 SNMP requests per second? Where do they come from? Which Scanning-interval do you have in PRTG?

Maybe is the SNMP service overloaded. The switch is not configured to restart at this time?


Sep, 2013 - Permalink

SNMP requests come form PRTG, Netcrunch and inventory tools Cisco Prime . I have 326 sensors on the switch. Scan interval is set to 5 min.

I deactivated monitoring of the device for time of inventory scan and that help.


Sep, 2013 - Permalink