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Dell Configuration Guide for the S4048–ON System 9.14.2.4

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Reading 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 EMC Networking 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.

There are several UNIX SNMP commands that read data.

  • Read the value of a single managed object.
    snmpget -v version -c community agent-ip {identifier.instance | descriptor.instance}
  • Read the value of the managed object directly below the specified object.
    snmpgetnext -v version -c community agent-ip {identifier.instance | descriptor.instance}
  • Read the value of many objects at once.
    snmpwalk -v version -c community agent-ip {identifier.instance | descriptor.instance}

Examples of Reading the Value of Managed Objects

In the following example, the value “4” displays in the OID before the IP address for IPv4. For an IPv6 IP address, a value of “16” displays.

> 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

The following example shows reading the value of the next managed object.

> 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

The following example shows reading the value of the many managed objects at one time.

> snmpwalk -v 2c -c mycommunity 10.11.131.161 .1.3.6.1.2.1.1
SNMPv2-MIB::sysDescr.0 = STRING: Dell EMC Real Time Operating System Software
Dell Operating System Version: 1.0
Dell Application Software Version: E_MAIN4.9.4.0.0
Copyright (c) 1999-2014 by Dell 
Build Time: Mon May 12 14:02:22 PDT 2008
SNMPv2-MIB::sysObjectID.0 = OID: SNMPv2-SMI::enterprises.6027.1.3.1
DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (32920954) 3 days, 19:26:49.54
SNMPv2-MIB::sysContact.0 = STRING:

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