Essential SNMP, 2nd Edition

Net-SNMP Command-Line Tools

This section briefly describes each of the Net-SNMP tools. By default, installing Net-SNMP places all these commands in /usr/local/bin. All the examples in this section assume that /usr/local/bin is in your path.

snmpwalk

snmpwalk performs the getnext operation. We've used it throughout the book, so it should be familiar; in this section, we'll use it to demonstrate some of the options introduced in Table C-1.

Let's say you want to perform an snmpwalk against a Cisco router. If you don't have any Cisco MIBs installed, here's what you will see:

               
    $ snmpwalk -v2c -c public cisco.oreilly.com .1.3.6.1.4.1.9
    SNMPv2-SMI::enterprises.9.2.1.1.0 = "
    System Bootstrap, Version 12.2(6r),  RELEASE SOFTWARE (fc1)
    TAC Support: http://www.cisco.com/tac
    Copyright (c) 2001 by cisco Systems, Inc."
    SNMPv2-SMI::enterprises.9.2.1.2.0 = "reload"
    SNMPv2-SMI::enterprises.9.2.1.3.0 = "cisco"
    SNMPv2-SMI::enterprises.9.2.1.4.0 = "oreilly.com"
    SNMPv2-SMI::enterprises.9.2.1.5.0 = IpAddress: 127.45.23.1
    SNMPv2-SMI::enterprises.9.2.1.6.0 = IpAddress: 0.0.0.0
    SNMPv2-SMI::enterprises.9.2.1.8.0 = 131890952
    SNMPv2-SMI::enterprises.9.2.1.9.0 = 456
    SNMPv2-SMI::enterprises.9.2.1.10.0 = 500
    SNMPv2-SMI::enterprises.9.2.1.11.0 = 17767568
    SNMPv2-SMI::enterprises.9.2.1.12.0 = 0
    SNMPv2-SMI::enterprises.9.2.1.13.0 = 0
    SNMPv2-SMI::enterprises.9.2.1.14.0 = 104
    SNMPv2-SMI::enterprises.9.2.1.15.0 = 600
    ...

Recall that .1.3.6.1.4.1 is .iso.org.dod.internet.private.enterprises, and 9 is Cisco's private enterprise ...