change severity for polled ports

[sreinhardt]

You would need to either write a wrapper script or alter the code for check_ifoperstatus and recompile it. The wrapper script would be far easier as you could look for the output of a port being unknown/inaccessible and modify the output and exit code to your liking.

[deepavaidya]

I cannot find the statement "WARNING: SNMP error: No response from the remote host xxx" in check_ifoperstatus plugin or check_ifstatus plugin. From which script is this statement coming from ?

[tmcdonald]

That error will not be output by the plugin itself, but rather a snmp utility the script runs. Probably snmpwalk or snmpget.