NEC Express5800/320Fc Manual download pdf (Page 112)

SNMP Foundations and Concepts

8-10 Express5800/ftServer: System Administrator’s Guide for the Linux Operating System

The Basic Net-SNMP Commands

These tools provide a basic set of features for exercising and managing objects using

a standard command syntax and core functionality:

NOTE

Although these commands are documented as user

commands (man (1)), you should treat SNMP utilities as

the administrative tools they are, and closely limit

privileges to execute these commands.

•

snmpwalk—This command uses SNMP GETNEXT requests to query a network

entity for a tree of information that maps the managed objects by object ID

hierarchically. See snmpwalk(1). While this can return much information, take care

not to use this command on a heavily loaded net, since it can add significantly to

traffic.

•

snmpget— This command queries a single SNMP object using an SNMP GET

request. See snmpget(1).

•

snmpgetnext— This command uses GETNEXT requests to query network entities

for information.

•

snmpgetbulk—This command uses the SNMP GETBULK request to query a

network entity for quantities of information. See snmpgetbulk(1).

•

snmpdf—This command replicates df command functionality on a

network-accessible drive. The snmpdf command checks disk space on the remote

machine by examining the system’s HOST-RESOURCES-MIB

hrStorageTable, or a UCD-SNMP-MIB's dskTable value. See snmpdf(1).

•

snmpstatus—This command queries a network entity to retrieve significant

information about a communicating object. See snmpstatus(1). The following

information is retrieved:

– The IP address of the entity.

– A textual description of the entity (sysDescr.0)

– The uptime of the entity's SNMP agent (sysUpTime.0)

– The sum of received packets on interfaces (ifInUCastPkts.*

ifInNUCastPkts.*)

– The sum of transmitted interface packets (ifOutUCastPkts.*

ifOutNUCastPkts.*)

– The number of IP input packets (ipInReceives.0)

– The number of IP output packets (ipOutRequests.0)

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NEC Express5800/320Fc Manual Page 112