Why is this a partial result?

[grifferz]

Hello,

Out of the blue this evening I noticed one of my data sources was
consistently showing a NaN on the graphs. I messed around for a
while with various things but could not fix it, so I deleted the
graph and all its data sources and created it again, just to see
what would happen.

What happened was, that data source began getting collected again
fine, but some other ds started failing instead.

Looking in the cacti.log I saw lots of:

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07/08/2006 01:20:09 AM - CMDPHP: Poller[0] Host[2] WARNING: Result from SNMP not valid.  Partial Result:
07/08/2006 01:20:09 AM - CMDPHP: Poller[0] Host[2] SNMP: v1: 212.13.198.69, dsname: unicast_in, oid: .1.3.6.1.2.1.2.2.1.11.1, output: U

which is what I had been seeing for the other data source before I
deleted it. Querying that OID manually with snmpwalk I see:

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IF-MIB::ifInUcastPkts.1 = Counter32: 519996375

So.. I don't get it, what's the problem? I have not changed any
cacti settings so why should this suddenly start breaking?

This is an everyday install of Debian Sarge getting interface stats
out of net-snmp. It is always that OID which I get the message
about. I suppose if I deleted the graph and datasources and created
it again then the problem would move elsewhere.

On the cacti server:

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ii  cacti          0.8.6d-1       Frontend to rrdtool for monitoring systems a
ii  php4           4.3.10-16      server-side, HTML-embedded scripting languag
ii  php4-cli       4.3.10-16      command-line interpreter for the php4 script
ii  php4-snmp      4.3.10-16      SNMP module for php4

And on the server being monitored:

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ii  libsnmp-base   5.1.2-6.2      NET SNMP (Simple Network Management Protocol
ii  libsnmp5       5.1.2-6.2      NET SNMP (Simple Network Management Protocol
ii  snmp           5.1.2-6.2      NET SNMP (Simple Network Management Protocol
ii  snmpd          5.1.2-6.2      NET SNMP (Simple Network Management Protocol

Cheers,
Andy

[gandalf]

Did you already increase php.ini's memory settings from 8MB to 64MB?
Reinhard