So you have a snmpd daemon running on some box and you want to retrieve information from it, there are 2 cool tools out there namely snmpwalk and snmpget, but you can use more advanced systems like nagios etc..

Check with a client with:

System UPTIME

arditi@blackbox:~$ snmpget -v 2c -c public 192.168.0.15 system.sysUpTime.0
DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (45385010) 5 days, 6:04:10.10

Check installed packages on the system and version as well (it’s like rpm -qa)

snmpwalk -Ov -OQ -v2c -c public 192.168.0.15 .1.3.6.1.2.1.25.6.3.1.2

INFO

arditi@blackbox:~$ snmpwalk -Os -c public -v 2c 192.168.0.15 system

sysDescr.0 = STRING: Linux butters.localdomain 2.6.22.19-72.e19 #1 SMP Thu Nov 26 12:12:03 EST 2009 i686
sysObjectID.0 = OID: netSnmpAgentOIDs.10
sysUpTimeInstance = Timeticks: (45411055) 5 days, 6:08:30.55
sysContact.0 = STRING: butters <a.xxxx@xxx.xxx>
sysName.0 = STRING: butters.localdomain
sysLocation.0 = STRING: Unknown
sysORLastChange.0 = Timeticks: (179) 0:00:01.79
sysORID.1 = OID: snmpFrameworkMIBCompliance
sysORID.2 = OID: snmpMPDCompliance
sysORID.3 = OID: usmMIBCompliance
sysORID.4 = OID: snmpMIB
sysORID.5 = OID: tcpMIB
sysORID.6 = OID: ip
sysORID.7 = OID: udpMIB
sysORID.8 = OID: vacmBasicGroup
sysORDescr.1 = STRING: The SNMP Management Architecture MIB.
sysORDescr.2 = STRING: The MIB for Message Processing and Dispatching.
sysORDescr.3 = STRING: The management information definitions for the SNMP User-based Security Model.
sysORDescr.4 = STRING: The MIB module for SNMPv2 entities
sysORDescr.5 = STRING: The MIB module for managing TCP implementations
sysORDescr.6 = STRING: The MIB module for managing IP and ICMP implementations
sysORDescr.7 = STRING: The MIB module for managing UDP implementations
sysORDescr.8 = STRING: View-based Access Control Model for SNMP.
sysORUpTime.1 = Timeticks: (178) 0:00:01.78
sysORUpTime.2 = Timeticks: (178) 0:00:01.78
sysORUpTime.3 = Timeticks: (178) 0:00:01.78
sysORUpTime.4 = Timeticks: (179) 0:00:01.79
sysORUpTime.5 = Timeticks: (179) 0:00:01.79
sysORUpTime.6 = Timeticks: (179) 0:00:01.79
sysORUpTime.7 = Timeticks: (179) 0:00:01.79
sysORUpTime.8 = Timeticks: (179) 0:00:01.79
arditi@blackbox:~$

IFTABLE

snmpwalk -v 2c -c public 192.168.0.15 1.3.6.1.2.1.2.2