Nagios Support Forum

Hello everyone,

first of all.. Iam new to nagios core and i try to monitor some network devices, so i really need your help.
Because i have some issues with the snmp check_commands.. for example with the system uptime

Service State Information:
External command error: Error in packet
Reason: (noSuchName) There is no such variaböe name in this MIB.
Failed object: iso.3.6.1.2.1.25.1.6.0

Here is how is definited the command and the service:
## SNMP Command Definition - Up time
define command
{
command_name SNMP-Uptime
command_line $USER1$/check_snmp -o 1.3.6.1.2.1.25.1.1.0 -H $HOSTADDRESS$ $ARG1$
}

and the Service for the Host:
## SNMP Service Definition - Up time
define service
{
use generic-service
host_name myhostnameSWITCH
service_description System uptime
check_command SNMP-Uptime!-C public
}

So what did i wrong? or what have i do that i works?
I am grateful for any help!

And sorry.. english is not my mother tongue.

Hi
i have the same problem: running snmpwalk i get a big list of OIDs but it seems strange to me that i must create a service for each of the OIDs, (it's also difficult to relate two distinct OIDs)

.1.3.6.1.2.1.2.2.1.6.4 = STRING: xx:xx:xx:xx:xx:xx
.1.3.6.1.2.1.2.2.1.6.5 = STRING: xx:xx:xx:xx:xx:xx
.1.3.6.1.2.1.2.2.1.7.1 = INTEGER: up(1)
.1.3.6.1.2.1.2.2.1.7.2 = INTEGER: down(2)
.1.3.6.1.2.1.2.2.1.9.4 = Timeticks: (13601887) 1 day, 13:46:58.87
.1.3.6.1.2.1.2.2.1.10.1 = Counter32: 143862889
.1.3.6.1.2.1.2.2.1.10.2 = Counter32: 0
.1.3.6.1.2.1.2.2.1.16.10 = Counter32: 4077830604
.1.3.6.1.2.1.2.2.1.16.11 = Counter32: 1481026996
.1.3.6.1.2.1.3.1.1.2.35.1.XXX.XXX.XXX.1 = Hex-STRING: XX XX XX XX XX XX
.1.3.6.1.2.1.3.1.1.2.35.1.XXX.XXX.XXX.4 = Hex-STRING: XX XX XX XX XX XX
.1.3.6.1.2.1.3.1.1.2.35.1.XXX.XXX.XXX.8 = Hex-STRING: XX XX XX XX XX XX
.1.3.6.1.2.1.4.20.1.1.127.0.0.1 = IpAddress: 127.0.0.1
.1.3.6.1.2.1.4.20.1.1.XXX.XXX.XXX.101 = IpAddress: XXX.XXX.XXX.101
.1.3.6.1.2.1.6.13.1.2.127.0.0.1.33599.127.0.0.1.1883 = IpAddress: 127.0.0.1
.1.3.6.1.2.1.6.13.1.2.XXX.XXX.XXX.101.1883.XXX.XXX.XXX.101.59616 = IpAddress: XXX.XXX.XXX.101
.1.3.6.1.2.1.25.1.4.0 = STRING: "ramdisk_size=128M mem=126M board=AP152_AFI console=ttyS0,115200 mtdparts=spi0.0:256k(u-boot)ro,64k(u-boot-env)ro,1536k(kernel),"
.1.3.6.1.2.1.25.2.3.1.2.33 = OID: .1.3.6.1.2.1.25.2.1.4
.1.3.6.1.2.1.25.2.3.1.3.1 = STRING: Physical memory
.1.3.6.1.2.1.25.2.3.1.3.3 = STRING: Virtual memory
.1.3.6.1.2.1.25.2.3.1.3.6 = STRING: Memory buffers
.1.3.6.1.2.1.25.2.3.1.3.7 = STRING: Cached memory
.1.3.6.1.2.1.25.2.3.1.3.8 = STRING: Shared memory

You said that you want to monitor network devices. There are plugins that use SNMP to gather data from network devices which you may be interested in.
https://exchange.nagios.org/

Search there for specific plugins and use them instead.

This error means that the OID on the device does not exist.

Oh ok, I will take a look. Thanks

Just so I got it right:
If i want to get an info for example for the uptime and the pysical memory..
I have to use two different OIDs, which i get with the snmpwalk right?

Because if have many routers and switches, and at the moment i just got the ping to see if the device is reachable or not.
And i want also see the uptime, the memory and other things.

Yes, you would have to use 2 different OID's (and sometimes more) to get the Uptime and Physical memory from the device and you can use the snmpwalk to get that information.