Actually you can by adding a route via the interface ip r a 20.20.20.0/24 dev eth0 On 02/26/2014 09:09 AM, Cretu Adrian wrote: > Hi, > You can not have a gateway that is on another ip subnet than your physical > interfaces from that server, so a route should have a gateway that is on > the same ip subnet as your interfaces. > In your case you should add another subnet on both servers something like: > HOST A: 172.29.120.2 > HOST B: 172.29.120.3 > > And then add a route for 20.20.20.0 via 172.29.120.3. > > Or you can just add on either of the servers one more ip address from the > class of the other server. > All this will work if the servers are on the same broadcast domain ( > http://en.wikipedia.org/wiki/Broadcast_domain) if they are on distinct ones > then you need to configure the router between them to route the > 20.20.20.0/24 network to host b. > > > > > > > On Wed, Feb 26, 2014 at 8:28 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 >> _______________________________________________ >> CentOS mailing list >> CentOS at centos.org >> http://lists.centos.org/mailman/listinfo/centos >> > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > -- Stephen Clark *NetWolves* Director of Technology Phone: 813-579-3200 Fax: 813-882-0209 Email: steve.clark at netwolves.com http://www.netwolves.com