[CentOS] Static routing on CentOS
sjt5atra
sjt5atra at gmail.com
Wed Feb 26 14:00:24 UTC 2014
> On Feb 26, 2014, at 1:28 AM, Jatin Davey <jashokda at cisco.com> wrote:
>
> Hi All
>
> I have two hosts. Host A and Host B
>
> Host A routing table
> ------------------------
> [root at localhost ~]# route -n
> Kernel IP routing table
> Destination Gateway Genmask Flags Metric Ref Use
> Iface
> 172.29.110.0 172.29.109.1 255.255.255.0 UG 0 0 0 eth0
> 172.29.109.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
> 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
> 0.0.0.0 172.29.109.1 0.0.0.0 UG 0 0 0 eth0
>
> HOST A IP address : 172.29.109.254
>
>
>
> Host B routing table
> -------------------------
> [jatin at localhost ~]$ route -n
> Kernel IP routing table
> Destination Gateway Genmask Flags Metric Ref Use
> Iface
> 172.29.110.0 0.0.0.0 255.255.255.0 U 1 0 0 eth0
> 20.20.20.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
> 169.254.0.0 0.0.0.0 255.255.0.0 U 1002 0 0 eth0
> 0.0.0.0 172.29.110.1 0.0.0.0 UG 0 0 0 eth0
>
> HOST B Ip address : 172.29.110.93
>
>
> Host B basically houses some simulated devices which are configured in
> the ip address range of 20.20.20.1 to 20.20.20.254. The netmask being
> used here is 255.255.255.0
>
> I want to configure a static route on HOST A so that they can reach the
> simulated devices running on HOST B which are in the ip address range
> 20.20.20.1-20.20.20.254 , I am trying the following command but it does
> not configure the static route for me.
>
> [root at localhost ~]# route add -net 20.20.20.0 netmask 255.255.255.0 gw
> 172.29.110.93
> SIOCADDRT: Network is unreachable
>
>
> Any help is greatly appreciated.
>
> Thanks
> Jatin
Your router (172.29.110.1) will need a static route to 20.20.20.0/24.
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