RE: SNMP get response result

Thanks Joel for quick response.

We can get snmp-get response = 1 only in case of timeout or there are any other scenarios  where we can get it as "1" ?

--
With regards,
Akshay

From: ext Joel Hansell [mailto:[email protected]]
Sent: Thursday, March 13, 2014 3:48 PM
To: Ballarpure, Akshay (EXT-Tata Consultancy Ser - IN/Hyderabad)
Cc: [email protected]
Subject: Re: SNMP get response result

Hi Akshay,
I'm not part of the dev team, but I can give an educated guess as to why it behaves like that.

As you know, the Unix convention for return status is that if the command exits normally, it should return 0. It should only return some other number if the command failed to execute as expected, and in other words the output will not be complete.
In the case of the timeout, that's a failure to reach the Agent (for whatever reason), and thus the command is not delivering the requested data to the user. So it exits with status 1, to indicate that it failed to provide the requested information.
The other failure you posted (No Such Object), however, is a different story. Here, there was a response from the Agent, where the Agent is saying that the requested OID is not available in its MIB view. The snmpget command prints the response and exits, which is considered normal operation.
So, I think there is a certain logic to it. If there is a response, print the response and exit with status 0. If there is no response, for some reason, exit with error status. It doesn't consider what the content of the response is.
If you need to find out if an error was returned from the Agent, then you'll have to parse the printed output.

Best regards,
Joel Hansell

On Thu, Mar 13, 2014 at 7:04 AM, Ballarpure, Akshay (EXT-Tata Consultancy Ser - IN/Hyderabad) <[email protected]<mailto:[email protected]>> wrote:
Hello,
I would like to know the response of snmp get in case of failure. We are getting zero in most of the success cases.
If we can get 1 in case of timeout, shall we use value of "$?" as snmp success and failure (0 and 1 respectively) on Solaris box ? please reply asap. Thanks


TCSH02-fm-1# /opt/MOTcagt/bin/snmpget -v3 -u admin -a SHA -A 09618538758384384367 -x AES -X 86095694849620176636 -l authPriv  27.182.4.222 1.3.6.1.2.1.1.5.0
SNMPv2-MIB::sysName.0 = STRING: NESIM-60001-ENodeB980
TCSH02-fm-1# echo $?
0
TCSH02-fm-1# /opt/MOTcagt/bin/snmpget -v3 -u admin -a SHA -A 09618538758384384367 -x AES -X 86095694849620176636 -l authPriv  27.182.4.222 1.3.6.1.2.1.1.5.01
SNMPv2-MIB::sysName.1 = No Such Object available on this agent at this OID
TCSH02-fm-1# echo $?
0
TCSH02-fm-1# /opt/MOTcagt/bin/snmpget -v3 -u admin -a SHA -A 09618538758384384367 -x AES -X 86095694849620176636 -l authPriv  27.182.18.51 1.3.6.1.2.1.1.5.0
SNMPv2-MIB::sysName.0 = STRING: TCSH02-fm-sb
TCSH02-fm-1# /opt/MOTcagt/bin/snmpget -v3 -u admin -a SHA -A 09618538758384384367 -x AES -X 86095694849620176636 -l authPriv  27.182.18.51 1.3.6.1.2.1.1.5.0
SNMPv2-MIB::sysName.0 = STRING: TCSH02-fm-sb
TCSH02-fm-1# /opt/MOTcagt/bin/snmpget -v3 -u admin -a SHA -A 09618538758384384367 -x AES -X 86095694849620176636 -l authPriv  27.182.18.48 1.3.6.1.2.1.1.5.0
snmpget: Timeout
TCSH02-fm-1#  echo $?
1

--
With regards,
Akshay




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