Re: [Observium] snmpget on multiple OID fails on Eaton UPS

We have ability set limit in os definition. But I think limit to 3 Oids in one request will reduce polling time..

Tim, you sure that this device not have fixed (new) firmware?

Adam Armstrong wrote on 12/09/2018 19:34:

Lol, excellent behaviour.

There isn't any way of configuring this at the moment, since being able to snmpget more than one thing is something you should reasonably be able to expect any SNMP stack to handle.

Is this behaviour also apparent when using v2c?

Adam.

Sent from BlueMail http://www.bluemail.me/r?b=13569 On 12 Sep 2018, at 17:17, Mailing Lists <lists@coop3r.com mailto:lists@coop3r.com> wrote:

We have around 22 Eaton UPS devices currently monitored on
Observium and I have been investigating today why about 25% of
them refuse to return a syslocation.

It seems that the devices just don't reliably return snmpget when
multiple OID are queried at once, at least for these objects.

Specifically, when taking the following command from the poller
debug and running it manually:

/usr/bin/snmpget -t '4' -r '2' -v3 -l 'authPriv' -n '' -x 'DES' -X
'removed' -a 'MD5' -A 'removed' -u 'observium' -Pu -OQUs -m
SNMPv2-MIB -M /opt/observium/mibs/rfc:/opt/observium/mibs/net-snmp
'udp':'device':'161' sysUpTime.0 sysLocation.0 sysContact.0 sysName.0

The request times out even when increasing the timeout.

When reducing the number of OID queried to 3 or less the device
seems to respond:

/usr/bin/snmpget -t '4' -r '2' -v3 -l 'authPriv' -n '' -x 'DES' -X
'removed' -a 'MD5' -A 'removed' -u 'observium' -Pu -OQUs -m
SNMPv2-MIB -M /opt/observium/mibs/rfc:/opt/observium/mibs/net-snmp
'udp':'device':'161' sysUpTime.0 sysLocation.0 sysContact.0
sysUpTime.0 = 0:0:31:01.19
sysLocation.0 = location
sysContact.0 = user@example.com <mailto:user@example.com>

/usr/bin/snmpget -t '4' -r '2' -v3 -l 'authPriv' -n '' -x 'DES' -X
'removed' -a 'MD5' -A 'removed' -u 'observium' -Pu -OQUs -m
SNMPv2-MIB -M /opt/observium/mibs/rfc:/opt/observium/mibs/net-snmp
'udp':'device':'161' sysLocation.0 sysContact.0 sysName.0
sysLocation.0 = location
sysContact.0 = user@example.com <mailto:user@example.com>
sysName.0 = device

Is there a way to configure the behaviour to reduce the number of
simultaneous OID requested to make this work reliably?

Thanks,
Tim C

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