SNMP OID for getting manufacturer serial number with SNMP version 1

Question

I'm unable to get the manufacturer serial number when I do an SNMP get on an OID .2.47.1.1.1.1.11.1.0. If I do an snmpget with the below command on the OID with the command:

snmpget -v1 -c public 192.168.4.99 .2.47.1.1.1.1.11.1.0

I get the message:

Reason: (noSuchName) There is no such variable name in this MIB.
Failed object: joint-iso-ccitt.47.1.1.1.1.11.1.0

I did search on google for the possible cause of error by going to this SO thread as it is caused by missing the instance subidentifier.

I performed an SNMPtranslate for the OID and I got the below string joint-iso-ccitt.47.1.1.1.1.11.1.0.

And when I performed an snmpwalk on the OID by the below command i get the message as END OF MIB.

snmpwalk -v1 -c public 192.168.4.1 .2.47.1.1.1.1.11.1.0

Please let me know where I'm going wrong and let me know the exact generic OID to get the manufacturers serial number.

Answer 1

Who tells you the OID is .2.47.1.1.1.1.11.1.0?

Seriously speaking, a normal OID starts with .1, except .0.0 which is very special.

Answer 2

If you start with walking the top of the MIB tree, you'll soon find out which variables your equipment supports:

snmpwalk -v1 -c public -Ont 192.168.4.1 .1

Remove the "-Ont" to get translated names, where possible, instead of the fully numeric OIDs.

If you're looking for vendor-independent data, you could look into a MIB that most equipment supports, SNMPV2-MIB:

http://www.ietf.org/rfc/rfc3418.txt

However, you'll find it does not contain any serial number variable. Most vendors provide a vendor-specific (or product-specific) MIB which will define, among other things, serial number. However, like most things in SNMP, it's entirely up to each vendor which MIBs they choose to implement.