520 | Simple Network Management Protocol (SNMP)
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Read Managed Object Values
You may only retrieve (read) managed object values if your management station is a member of the same
community as the SNMP agent.
Dell Force10 supports RFC 4001,
Textual Conventions for Internet Work Addresses that defines values
representing a type of internet address. These values display for ipAddressTable objects using the
snmpwalk command.
In the following figure, the value “4” displays in the OID before the IP address for IPv4.
There are several UNIX SNMP commands that read data:
Task Command
Read the value of a single managed object
as shown in Figure 30-3.
snmpget -v version -c community agent-ip {identifier.instance |
descriptor.instance}
Figure 30-3. Reading the Value of a Managed Object
Read the value of the managed object
directly below the specified object as
shown in Figure 30-4.
snmpgetnext -v version -c community agent-ip {identifier.instance |
descriptor.instance}
Figure 30-4. Reading the Value of the Next Managed Object in the MIB
Read the value of many objects at once as
shown in Figure 30-5.
snmpwalk -v version -c community agent-ip {identifier.instance |
descriptor.instance}
>snmpwalk -v 2c -c public 10.11.195.63 1.3.6.1.2.1.4.34
IP-MIB::ip.34.1.3.1.4.1.1.1.1 = INTEGER: 1107787778
IP-MIB::ip.34.1.3.1.4.2.1.1.1 = INTEGER: 1107787779
IP-MIB::ip.34.1.3.2.16.254.128.0.0.0.0.0.0.2.1.232.255.254.139.5.8 = INTEGER: 1107787778
IP-MIB::ip.34.1.4.1.4.1.1.1.1 = INTEGER: 1
IP-MIB::ip.34.1.4.1.4.2.1.1.1 = INTEGER: 1
IP-MIB::ip.34.1.4.2.16.0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.1 = INTEGER: 1
> snmpget -v 2c -c mycommunity 10.11.131.161 sysUpTime.0
DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (32852616) 3 days, 19:15:26.16
> snmpget -v 2c -c mycommunity 10.11.131.161 .1.3.6.1.2.1.1.3.0
DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (32856932) 3 days, 19:16:09.32
> snmpgetnext -v 2c -c mycommunity 10.11.131.161 .1.3.6.1.2.1.1.3.0
SNMPv2-MIB::sysContact.0 = STRING:
> snmpgetnext -v 2c -c mycommunity 10.11.131.161 sysContact.0
SNMPv2-MIB::sysName.0 = STRING:
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