SNMP problems checking switch

[Andreas Ericsson]

Sorry for answering my own mail. It happens when the brain goes to lunch 
before I do. Corrections below.

Andreas Ericsson wrote:
> Florian Beese wrote:
> 
>> Hi,
>>
>> I got a problem using SNMP on a 3COM Super Stack II Switch.
>>
>> I am using the MIB-2 (described in RFC 1213), which is supported for 
>> this switch.
>>
>> Now, when I do the following:
>> ./check_snmp -H 1.1.1.1 -C public -o 1.3.6.1.2.1.2.1.0
>> I get an "SNMP OK - 34" for the number of interfaces, which is a bit 
>> strange (34? on 12-port), but seems ok so far.
> 
> 
> It includes NULL, loopback, and possibly a plethora of different 
> interfaces.
> 
>> When I don't put the 0 at the end it isn't working anymore. But on 
>> some other machines we monitor with SNMP it works. I looked it up in 
>> the documentation and with the 0 it should work properly... As long as 
>> I don't want to access any tables.
>>
>> When I do the following:
>> ./check_snmp -H 1.1.1.1 -C public -o 1.3.6.1.2.1.2.2.1.8.1
>> to check the status of the first interface on the switch I don't get a 
>> respone "SNMP problem - No data received from host".  With other 
>> switches it works properly. I tried some other values of the table and 
>> of another table and got no response, too.
>>
>> Any idea, why this isn't working?
>>
> 
> Yes.
> .1.3.6.1.2.1.2.2.1.8 means 'status of first logical interface'.
> .1.3.6.1.2.1.2.2.2.8 means 'status of second logical interface'.
> 

Disregard the one above.
.1.3.6.1.2.1.2.2.1.8.1 should indeed get you the first interface on the 
switch. Apparently my brain stopped working somehow.

> I'm sure you get the drift.
> 
> snmpwalk -v 1 -c public host .1.3.6.1.2.1.2.2
> should be somewhat enlightening as well.
> 

This is still a good idea, though.

>> Thanks in advance!
>>
> 
> You're welcome.
> 
>> regards
>>     Florian Beese
>>
>> PS: Excuse my bad english.
>>
> 
> It's far better than most native english speakers on this list, so don't 
> apologize for it.
> 

-- 
Andreas Ericsson                   andreas.ericsson at op5.se
OP5 AB                             www.op5.se
Lead Developer


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