We use MRTG to monitor filer stats. All has been working well until mid-day yesterday. Now, SNMP queries for network traffic stats (Kbytes sent and received) are returning negative numbers. For example:

[/usr/local/mrtg/filer/bin]# ./snmpget -v 1 yeti public 1.3.6.1.4.1.789.1.2.2.2.0 -79935745 [/usr/local/mrtg/filer/bin]# ./snmpget -v 1 yeti public 1.3.6.1.4.1.789.1.2.2.3.0 -2057424956

What causes this and how do I fix it? The filer is an F820 running DataOntap 6.3.1. Thanks in advance.

Ed