Monday, December 13, 2010

Net-snmp 5.5 snmpwalk gives you more!

An oddity picked up today: snmpwalking a Netgear ReadyNAS from net-snmp 5.5 gives significantly different results when compared to the output of snmpwalk from net-snmp 5.4.2.1:

From an Ubuntu 10.04 machine

$ snmpwalk --version
NET-SNMP version: 5.4.2.1
$ snmpwalk -v1 -cpublic 10.1.1.207 enterprises.4526.18.7.1
SNMPv2-SMI::enterprises.4526.18.7.1.1.1 = INTEGER: 1
SNMPv2-SMI::enterprises.4526.18.7.1.2.1 = STRING: "Volume C"
SNMPv2-SMI::enterprises.4526.18.7.1.3.1 = STRING: "RAID Level X"
SNMPv2-SMI::enterprises.4526.18.7.1.4.1 = STRING: "ok"
SNMPv2-SMI::enterprises.4526.18.7.1.5.1 = INTEGER: 4262912
SNMPv2-SMI::enterprises.4526.18.7.1.6.1 = INTEGER: 3403776

From a FreeBSD 8.1 machine

[root@vm-fbsd81 ~]# snmpwalk --version
NET-SNMP version: 5.5
[root@vm-fbsd81 ~]# snmpwalk -v1 -cpublic 10.1.1.207 enterprises.4526.18.7.1
SNMPv2-SMI::enterprises.4526.18.7.1.1.1 = INTEGER: 1
SNMPv2-SMI::enterprises.4526.18.7.1.2.1 = STRING: "Volume C"
SNMPv2-SMI::enterprises.4526.18.7.1.3.1 = STRING: "RAID Level X"
SNMPv2-SMI::enterprises.4526.18.7.1.4.1 = STRING: "ok"
SNMPv2-SMI::enterprises.4526.18.7.1.5.1 = INTEGER: 4262912
SNMPv2-SMI::enterprises.4526.18.7.1.6.1 = INTEGER: 3403776
NET-SNMP-AGENT-MIB::nsModuleName."".1.0.0 = STRING:
NET-SNMP-AGENT-MIB::nsModuleName."".1.1.0 = STRING:
NET-SNMP-AGENT-MIB::nsModuleName."".1.2.0 = STRING:
NET-SNMP-AGENT-MIB::nsModuleName."".7.1.3.6.1.2.1.4.127 = STRING: ip
NET-SNMP-AGENT-MIB::nsModuleName."".7.1.3.6.1.2.1.5.127 = STRING: icmp
NET-SNMP-AGENT-MIB::nsModuleName."".7.1.3.6.1.2.1.6.127 = STRING: tcp
[snip another 1300 lines]

And I even tried net-snmp 5.5 for Windows, which had the same results as the FreeBSD example.

Something has changed - perhaps there's a bug in the ReadyNAS MIB that was undetected by net-snmp 5.4.x, but net-snmp 5.5 is being strict about it? Perhaps there's a bug in net-snmp 5.5? I don't know enough to say for sure.