Cisco Systems Dial NMS manual Step

Task 2— Exploring SNMP Capabilities by Using UCD-SNMP

About Using UCD-SNMP

enterprises.9.2.1.2.0 = "reload"

If SNMP-parsing errors are generated, suppress them by appending 2>/dev/null to the end of the command. Standard output is tagged as 1. Error output is tagged as 2.

onionring:~$ snmpget travis-nas-01.the.net 5urf5h0p .1.3.6.1.4.1.9.2.1.2.0 2> /dev/null

enterprises.9.2.1.2.0 = "reload"

onionring:~$

Note If no response is returned by the SNMP agent, allow error messages to print to the screen by removing the 2>/dev/null argument.

Step 2 Check the system up time by entering the snmpget command and sysUpTime OID:

onionring:~$ snmpget travis-nas-01.the.net 5urf5h0p .1.3.6.1.2.1.system.sysUpTime.0 2>

/dev/null

system.sysUpTime.0 = Timeticks: (45450609) 5 days, 6:15:06.09

onionring:~$

Step 3 To gather basic configuration management information about the Cisco IOS device, enter the snmpwalk command and the system OID.

onionring:~$ snmpwalk travis-nas-01.the.net 5urf5h0p system 2> /dev/null system.sysDescr.0 = "Cisco Internetwork Operating System Software ..IOS (tm) 5800 Software (C5800-P4-M), Version 12.1(2a)T1, RELEASE SOFTWARE (fc2)..Copyright

(c)1986-2000 by cisco Systems, Inc...Compiled Mon 12-Jun-00 23:13 by ccai" system.sysObjectID.0 = OID: enterprises.9.1.188

system.sysUpTime.0 = Timeticks: (45492606) 5 days, 6:22:06.06 system.sysContact.0 = "net-admin@aurora.the.net" system.sysName.0 = "travis-nas-01.the.net" system.sysLocation.0 = "Lake Travis (Austin) Dial POP" system.sysServices.0 = 78

system.8.0 = Timeticks: (0) 0:00:00.00 onionring:~$

Step 4 Change the OID environmental prefix by entering the commands prefix and export prefix. This step reduces the number of key strokes you must enter at the command line.

onionring:~$ snmpget travis-nas-01.the.net 5urf5h0p .1.3.6.1.4.1.9.2.1.2.0 2> /

dev/null

enterprises.9.2.1.2.0 = "reload" onionring:~$ PREFIX=.1.3.6.1.4.1.9 onionring:~$ export PREFIX

onionring:~$ snmpget travis-nas-01.the.net 5urf5h0p 2.1.2.0 2> /dev/null

enterprises.9.2.1.2.0 = "reload"

onionring:~$

The UCD-SNMP application attaches a prefix to the requested variable unless it is fully qualified (for example, unless the variable starts with a period “.”). By default, the prefix points to the MIB-II node

.1.3.6.1.2.1 location. The Cisco enterprises prefix points to .1.3.6.1.4.1.9

Step 5	Inspect the IP address entry table by entering the snmptable command and ipAddrTable OID:
	onionring:~$		snmptable travis-nas-01.the.net 5urf5h0p ip.ipAddrTable 2> /dev/null
	SNMP table:	ip.ipAddrTable.ipAddrEntry
	ipAdEntAddr	ipAdEntIfIndex		ipAdEntNetMask ipAdEntBcastAddr ipAdEntReasmMaxSize
	172.21.10.1		351	255.255.255.255	1	18024
	172.21.101.20		289	255.255.255.0	1	18024
	onionring:~$

Basic Dial NMS Implementation Guide

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