[root@localhost ~]# yum install net-snmp net-snmp-libs net-snmp-utils

[root@localhost ~]# cd /tmp   #統一把下載的資料存放在tmp

[root@localhost ~]# wget http://www.vixual.net/download/source/mrtg/ucd-snmp-4.2.5.tar.gz

[root@localhost src]# mv ucd-snmp-4.2.5.tar.gz /usr/local/src

[root@localhost src]# cd /usr/local/src

[root@localhost src]# tar -zxvpf ucd-snmp-4.2.5.tar.gz

[root@localhost src]# cd ucd-snmp-4.2.5

[root@localhost ucd-snmp-4.2.5]# ./configure --prefix=/usr/local/snmp

#過程中會有幾個要注意的地方

-Press return to continue- (這裡按 enter 吧)

System Contact Information (root@):root@tsai.adsldns.org  (這裡輸入你的 e-mail)

System Location (Unknown):CentOS 5.6 (這裡可以隨便輸入，不正確也沒關係)

Location to write logfile (/var/log/snmpd.log): (按 enter 即可)

Location to write persistent information (/var/ucd-snmp): (按 enter 即可)

[root@localhost ucd-snmp-4.2.5]# make 

[root@localhost ucd-snmp-4.2.5]# make install

#啟動 ucd-snmp

[root@localhost ~]# /usr/local/snmp/sbin/snmpd

[root@localhost ~]# chkconfig snmpd on    #可以自動開機時啟動