[mrtg] Re: Help! Cisco and modems in use

Maximo Bistue maximo at dynastar.com.ar
Thu Aug 10 21:30:32 MEST 2000

Now i have this:
Target [xx]: at zzz

Same error:
./mrtg test.cfg :
snmp error:
error status: no Such name
index 1 (OID:
SNMPGET Problem for :
sysUptime sysName on zzz at zzz
SNMPGET Failed to reach target
: at zzz

And at the cisco i can see:

77699 SNMP packets input
    0 Bad SNMP version errors
    0 Unknown community name
    0 Illegal operation for community name supplied
    0 Encoding errors
    388111 Number of requested variables
    0 Number of altered variables
    77603 Get-request PDUs
    96 Get-next PDUs
    0 Set-request PDUs
77699 SNMP packets output
    0 Too big errors (Maximum packet size 1500)
    40 No such name errors
    0 Bad values errors
    0 General errors
    77699 Get-response PDUs
    0 SNMP trap PDUs

This is the times i tried with different combinations:    40 No such name

Anybody using IOS 11.2(1) to do this?, i think that there is a problem with
that. What do you think?

Thankyou very much for your help and your explanation.

----- Original Message -----
From: Alex van den Bogaerdt <alex at slot.hollandcasino.nl>
To: Maximo Bistue <maximo at dynastar.com.ar>
Sent: Thursday, August 10, 2000 12:47 PM
Subject: Re: [mrtg] Re: Help! Cisco and modems in use

> Maximo Bistue wrote:
> >
> > Iam sorry but what is instance 1 and 2? I did just like in the MRTG
> Assume a router with two interfaces. Assume you want to monitor the
> octet counters.  You want to do something very special; you want to
> monitor inbound octets on interface 1 and outbound octets on interface
> 2 (this probably is useful for this example only).
> OID for inbound octets:
> OID for outbound octets:
> The OID is not enough when you query a device.
> If you (or MRTG, or any other tool that uses SNMP) needs to query one of
> the counters you need to specify WHICH one of them.  This is the instance.
> I entered the ">" and "<" only to make clear what ends where.
> variables:
>    <OID1><instance1>&<OID2><instance2>:<community>@<device>
> fill in the several variables:
>    <><1>&<><2>:<public>@<router>
> end up with:
> at router
> The normal target such as "234:public at router" is short hand for:
> at router
> For OIDs that are not related to multiple ports or similar, the instance
> will be zero in most of the cases.
> If you have more questions on SNMP you really should ask this on lists
> related to SNMP.  A good book might help here too.
> Hope this helps.  Please reply to me if it does.  I'll add it to the FAQ
> then.
> --
>    __________________________________________________________________
>  / alex at slot.hollandcasino.nl                  alex at ergens.op.het.net \
> | work                                                         private |
> | My employer is capable of speaking therefore I speak only for myself |
> +----------------------------------------------------------------------+
> | http://faq.mrtg.org/                                                 |
> | http://rrdtool.eu.org  --> tutorial                                  |
> +----------------------------------------------------------------------+

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