Guide to calculate SUBNET and BROADCAST adress

Posted: December 15th, 2011 | Author: adq890 | Filed under: general | No Comments »

Refer : http://www.shunsoft.net/ipcalc/help/index.html

Install and configure SNMP on CentOS

This guide describe howto install and do a basic configure of SNMP on a RedHat Enterprise Linux or CentOS.

1. Installation

Run command yum install net-snmp-utils

[root@dull etc]# yum install net-snmp-utils

2. Configure

do a backup of the snmpd config file.

[root@dull ~]# mv /etc/snmp/snmpd.conf /etc/snmp/snmpd.conf.old

Create a new config file.

[root@dull ~]# vi /etc/snmp/snmpd.conf

rocommunity public
syslocation “PDC, Peters DataCenter”
syscontact [email protected]

Start the snmpd service

[root@dull ~]# /etc/init.d/snmpd start

Do a snmpwalk to make sure it is working

[root@dull ~]# snmpwalk -v 1 -c public -O e 127.0.0.1

SNMPv2-MIB::sysDescr.0 = STRING: Linux dull 2.6.18-92.1.17.el5 #1 SMP Tue Nov 4 13:45:01 EST 2008 i686
SNMPv2-MIB::sysObjectID.0 = OID: NET-SNMP-MIB::netSnmpAgentOIDs.10
DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (16748) 0:02:47.48
SNMPv2-MIB::sysContact.0 = STRING: [email protected]
SNMPv2-MIB::sysName.0 = STRING: dull
SNMPv2-MIB::sysLocation.0 = STRING: “PDC, Peters DataCentral”
SNMPv2-MIB::sysORLastChange.0 = Timeticks: (1) 0:00:00.01

…

Yes, it is working

And finally, make sure snmpd starts next time you restart your machine.

[root@dull ~]# chkconfig snmpd on