2/5/2015 HowToAddPersistentorStaticRoutestoCentOS5.9and6.4|WINGLOON

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HowToAddPersistentorStaticRoutestoCentOS5.9and6.4SEPTEMBER13,2013BYWINGLOON COMMENTSOFF

Inthishowto,IamgoingtosharehowtoaddpersistentorstaticroutesonCentOS5.9and6.4versions.Assumingthenetworkinformationbelowconfiguredontheserveritselfwithonenetworkinterfacecard,eth0:

Interface:eth0

IPAddress:172.16.0.1

Netmask:255.255.255.0

Gateway:172.16.0.254

Weneedtoaddtwostaticroutesbelowandtheseroutesdontroutetothedefaultrouteofeth0interface,172.16.0.254:

Interface:eth0

Address:192.168.1.0

Netmask:255.255.255.0

Gateway:172.16.0.11

Interface:eth0

Address:10.20.30.0

Netmask:255.255.255.0

Gateway:172.16.0.12

Hereishowwecandoitbycreatingthis/etc/sysconfig/networkscripts/routeeth0file.Youhavetwowaystodefinethecontent.IhadtestedonCentOS5.9and6.4versionanditworks.

Option1,includethebelowin/etc/sysconfig/networkscripts/routeeth0file:

GATEWAY0=172.16.0.11

NETMASK0=255.255.255.0

ADDRESS0=192.168.1.0

GATEWAY1=172.16.0.12

NETMASK1=255.255.255.0

ADDRESS1=10.20.30.0

Option2,includethebelowin/etc/sysconfig/networkscripts/routeeth0file:

2/5/2015 HowToAddPersistentorStaticRoutestoCentOS5.9and6.4|WINGLOON

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192.168.1.0/24via172.16.0.11deveth0

10.20.30.0/24via172.16.0.12deveth0

Youcanrestartthenetworkservicetohavethechangestotakeeffectusingthiscommand:

#servicenetworkrestart

Ifthereisnoerror,youcanverifytheroutesusingthiscommand:

#routen

or

#netstatrn

Yourrouteswillbeaddedautomaticallyaftereveryreboot.Pleasenotethatifyouneedtoaddroutestoeth1interfacethenyouneedtocreate/etc/sysconfig/networkscripts/routeeth1file.Hopethishelpsyou.Thankyou.