Concept Guide

SNMPv2-MIB::sysUpTime.0 = Timeticks: (8500932) 23:36:49.32 SNMPv2-MIB::snmpTrapOID.0 = OID:
IF-MIB::linkUp IF-MIB::ifIndex.33865785 = INTEGER: 33865785 SNMPv2-SMI::enterprises.
6027.3.1.1.4.1.2 =
STRING: "OSTATE_UP: Changed interface state to up: Tengig 0/1"
2010-02-10 14:22:40 10.16.130.4 [10.16.130.4]:
SNMPv2-MIB::sysUpTime.0 = Timeticks: (8500934) 23:36:49.34 SNMPv2-MIB::snmpTrapOID.0 = OID:
IF-MIB::linkUp IF-MIB::ifIndex.1107755009 = INTEGER: 1107755009
SNMPv2-SMI::enterprises.6027.3.1.1.4.1.2 = STRING: "
OSTATE_UP: Changed interface state to up:
Po 1"
Entity MIBS
The Entity MIB provides a mechanism for presenting hierarchies of physical entities using SNMP tables. The Entity MIB contains the
following groups, which describe the physical elements and logical elements of a managed system. The following tables are implemented for
the Aggregator.
• Physical Entity: A physical entity or physical component represents an identiable physical resource within a managed system. Zero or
more logical entities may utilize a physical resource at any given time. Determining which physical components are represented by an
agent in the EntPhysicalTable is an implementation-specic matter. Typically, physical resources (for example, communications ports,
backplanes, sensors, daughter-cards, power supplies, and the overall chassis), which you can manage via functions associated with one
or more logical entities, are included in the MIB.
• Containment Tree: Each physical component may be modeled as contained within another physical component. A containment-tree is
the conceptual sequence of entPhysicalIndex values that uniquely species the exact physical location of a physical component within
the managed system. It is generated by following and recording each entPhysicalContainedIn instance up the tree towards the root,
until a value of zero indicating no further containment is found.
Example of Sample Entity MIBS outputs
Dell#show inventory optional-module
Unit Slot Expected Inserted Next Boot Status/Power(On/Off)
------------------------------------------------------------------------
1 0 SFP+ SFP+ AUTO Good/On
1 1 QSFP+ QSFP+ AUTO Good/On
* - Mismatch
Dell#
The status of the MIBS is as follows:
$ snmpwalk -c public -v 2c 10.16.150.162 .1.3.6.1.2.1.47.1.1.1.1.2
SNMPv2-SMI::mib-2.47.1.1.1.1.2.1 = ""
SNMPv2-SMI::mib-2.47.1.1.1.1.2.2 = STRING: "PowerEdge-FN-410S-IOA"
SNMPv2-SMI::mib-2.47.1.1.1.1.2.3 = STRING: "Chassis 0 container"
SNMPv2-SMI::mib-2.47.1.1.1.1.2.4 = STRING: "Module 0"
SNMPv2-SMI::mib-2.47.1.1.1.1.2.5 = STRING: "Unit: 0 Port 1 10G Level"
SNMPv2-SMI::mib-2.47.1.1.1.1.2.6 = STRING: "Unit: 0 Port 2 10G Level"
SNMPv2-SMI::mib-2.47.1.1.1.1.2.7 = STRING: "Unit: 0 Port 3 10G Level"
SNMPv2-SMI::mib-2.47.1.1.1.1.2.8 = STRING: "Unit: 0 Port 4 10G Level"
SNMPv2-SMI::mib-2.47.1.1.1.1.2.9 = STRING: "Unit: 0 Port 5 10G Level"
SNMPv2-SMI::mib-2.47.1.1.1.1.2.10 = STRING: "Unit: 0 Port 6 10G Level"
SNMPv2-SMI::mib-2.47.1.1.1.1.2.11 = STRING: "Unit: 0 Port 7 10G Level"
SNMPv2-SMI::mib-2.47.1.1.1.1.2.12 = STRING: "Unit: 0 Port 8 10G Level"
SNMPv2-SMI::mib-2.47.1.1.1.1.2.13 = STRING: "Unit: 0 Port 9 10G Level"
SNMPv2-SMI::mib-2.47.1.1.1.1.2.14 = STRING: "Unit: 0 Port 10 10G Level"
SNMPv2-SMI::mib-2.47.1.1.1.1.2.15 = STRING: "Unit: 0 Port 11 10G Level"
SNMPv2-SMI::mib-2.47.1.1.1.1.2.16 = STRING: "Unit: 0 Port 12 10G Level"
shathishmuthu@login-maa-107 ~ $
SNMP Traps for Link Status
To enable SNMP traps for link status changes, use the snmp-server enable traps snmp linkdown linkup command.
804
Simple Network Management Protocol (SNMP)