check_snmp - warning numbers

[frank]

1. Make sure snmpd is running on the host. (classic mistake)
2. Make sure your community string and/or credentials are the same on the 
host and client.
3. Make sure you're using the same snmp version on client and server (v1, 
v2c, or v3)
4. Try running a tcpdump on the host while you're attempting the snmpwalk 
to verify that the snmp requests are reaching the host. At the same time 
verify that the host is trying to send out responses.
   # tcpdump udp port 161

I'm sure there are more tests you can do but this is a start.

-f

On Fri, 8 May 2009, Matias Blanco wrote:

> Date: Fri, 8 May 2009 13:02:28 -0300
> From: Matias Blanco <matias at valastro.com.ar>
> To: 'Alejandro S?nchez Mero?o' <alejandro.sanchez at ite.es>,
>     Nagios-users at lists.sourceforge.net
> Subject: Re: [Nagios-users] check_snmp - warning numbers
> 
> Hello,
>
> When i made an snmpwalk to a ip computer there is no response.
> The snmpwalk to a switch,router or printer works ok.
>
> Does any body know the reason?
>
>
> Cristian...
>
>
>
>
> -----Mensaje original-----
> De: Matias Blanco [mailto:matias at valastro.com.ar]
> Enviado el: Jueves, 07 de Mayo de 2009 17:02
> Para: 'Alejandro S?nchez Mero?o'; Nagios-users at lists.sourceforge.net
> Asunto: Re: [Nagios-users] check_snmp - warning numbers
>
> Hello,
> How can i do an snmpwalk on my switch?
>
> Thanks,
>
> Cristian...
>
>
>
>
> -----Mensaje original-----
> De: Alejandro S?nchez Mero?o [mailto:alejandro.sanchez at ite.es]
> Enviado el: Jueves, 07 de Mayo de 2009 05:44
> Para: Matias Blanco; Nagios-users at lists.sourceforge.net
> Asunto: RE: [Nagios-users] check_snmp - warning numbers
>
> Hola de nuevo...
>
> I'll answer you in English so that anybody in the list can understand
> and participate in this subject.
>
> I think that if you don't know exactly which parameter to monitor you
> should browse the whole OID list that you receive when you do a snmpwalk
> on your switch, and identify the ones that fit your needs, with the help
> of the website I said yesterday, or any other OIDs reference.
>
> My case: The only thing I want to detect is if there is any damaged port
> in any of my switches. So what I did was to snmpwalk on a switch which I
> positively knew that had its port #2 damaged, and discover which OID was
> significantly different for this port. And the one I found is:
>
> iso.3.6.1.2.1.10.7.2.1.7
>
> (maybe you can find it as its equivalent: SNMPv2-SMI::mib-2.10.7.2.1.7)
>
> defined as: "a count of frames for which the first transmission attempt
> on a particular interface is delayed because the medium is busy".
>
> The thing is that it's the only OID I found that gave a very high value
> for port #2 (about 65,000 or so) and 0 for the rest of ports that work
> properly.
>
> The command I defined for this was like this:
>
> define command {
> 	command_name check_port
> 	command_line $USER1$/check_snmp -H $HOSTADDRESS$ -C password -O
> iso.3.6.1.2.1.10.7.2.1.7.$ARG1$ -w 1 -c 10 -u retries
> }
>
> For sure there must be somebody else in the list who can give to you a
> more detailed or a more formally correct answer...
>
> Hasta la proxima,
>
>      Alejandro
>
> ==
> Alejandro Sanchez Merono
> Area de Informatica y Comunicaciones
> Instituto de Tecnologia Electrica - http://www.ite.es
> Valencia - Spain
>
>
>
> -----Mensaje original-----
> De: Matias Blanco [mailto:matias at valastro.com.ar]
> Enviado el: mi?rcoles, 06 de mayo de 2009 19:27
> Para: Alejandro S?nchez Mero?o; Nagios-users at lists.sourceforge.net
> Asunto: RE: [Nagios-users] check_snmp - warning numbers
>
> Hola Alejandro,
>
> Ahora otra cosa:
>
> De que manera crees que pueda chequear los puertos de mi switch con
> nagios para tener una idea m?s clara de lo que est? sucediendo?
> Porque esos paquetes entrantes con errores no se si son por causa de la
> PC o de los puerto del switch...
>
> Muchas Gracias...
>
> Cristian
>
>
>
>
> ************************************
>
> Hola Mat?as... :-) and hola everyone...
>
> There exists a magical website where to identify every OID you can check
> with SNMP, the link is:
>
> http://support.ipmonitor.com/mibs_byoidtree.aspx
>
> For your particular issue, if you type "RFC1213-MIB" at the "Search
> for:" form, click the result given ("RFC1213-MIB"), and then "View:
> Oid-tree", you'll be able to locate "ifInErrors(14)" at the tree shown,
> and clicking it you'll find its Description, which reads literally:
>
> "The number of inbound packets that contained errors preventing them
> from being deliverable to a higher-layer protocol."
>
> That's the answer to your question!!
>
> Now some other questions appear...
>
> Wouldn't it be nicer to know what exactly are you monitoring before you
> monitor it, so you could properly interpret the results?
>
> Is that parameter (number of inbound packets that contained errors and
> blah blah blah...) significant enough to determine if a port is working
> properly or not?
>
> Hope this helps...
>
> Best regards,
>
>         Alejandro
>
> ==
> Alejandro Sanchez Merono
> Area de Informatica y Comunicaciones
> Instituto de Tecnologia Electrica - http://www.ite.es Valencia - Spain
>
>
>
>
> -----Mensaje original-----
> De: Matias Blanco [mailto:matias at valastro.com.ar] Enviado el: mi?rcoles,
> 06 de mayo de 2009 17:49
> Para: Nagios-users at lists.sourceforge.net
> Asunto: [Nagios-users] check_snmp - warning numbers
>
> Hi, I am using the check_snmp nagios`s plugin. And when we check the
> ports status of a 3com Baseline 2250 Plus, we recibe many ports results:
>
> SNMP OK - 0
> SNMP WARNING - *1*
> SNMP WARNING - *84*
> SNMP WARNING - *2*
> SNMP WARNING - *2*
> SNMP WARNING - *4*
>
> The question is, what?s the meaning of the warning numbers?
>
>
> Other information:
> ------------------
>
> # 'check_snmp' command definition
> define command{
>        command_name    check_snmp
>        command_line    $USER1$/check_snmp -H $HOSTADDRESS$ $ARG1$
>        }
>
> Example of service
> -------------------
>
> define service {
> 	use			service-15x3x5-switchs
> 	host_name		3COM2250P
> 	service_description	Port 03 [In Errors]
> 	check_command		check_snmp!-C public -o ifInErrors.3 -w
> 0 -m RFC1213-MIB
> 	notifications_enabled	0
> 	}
>
>
>
> THANKS...
> Mat?as Blanco.
>
>
>
>
>
> ------------------------------------------------------------------------
> ------
> The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your
> production scanning environment may not be a perfect world - but thanks
> to
> Kodak, there's a perfect scanner to get the job done! With the NEW KODAK
> i700
> Series Scanner you'll get full speed at 300 dpi even with all image
> processing features enabled. http://p.sf.net/sfu/kodak-com
> _______________________________________________
> Nagios-users mailing list
> Nagios-users at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/nagios-users
> ::: Please include Nagios version, plugin version (-v) and OS when
> reporting any issue.
> ::: Messages without supporting info will risk being sent to /dev/null
>
>
> ------------------------------------------------------------------------------
> The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your
> production scanning environment may not be a perfect world - but thanks to
> Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700
> Series Scanner you'll get full speed at 300 dpi even with all image
> processing features enabled. http://p.sf.net/sfu/kodak-com
> _______________________________________________
> Nagios-users mailing list
> Nagios-users at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/nagios-users
> ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue.
> ::: Messages without supporting info will risk being sent to /dev/null
>

------------------------------------------------------------------------------
The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your
production scanning environment may not be a perfect world - but thanks to
Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700
Series Scanner you'll get full speed at 300 dpi even with all image 
processing features enabled. http://p.sf.net/sfu/kodak-com
_______________________________________________
Nagios-users mailing list
Nagios-users at lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/nagios-users
::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. 
::: Messages without supporting info will risk being sent to /dev/null