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Solved
Network - Redhat Linux
Posted on 2012-12-25
I have two network
10.10.10.0/24 and 10.10.20.0/24
10.10.10.0 - two systems
10.10.10.33
10.10.10.37
10.10.20.0 - two system
10.10.20.2
10.10.20.3
I have another system which is connected 10.10.10.0/24 and 10.10.20.0/24 network
I want to be able to ping 10.10.20.2 maching from 10.10.10.0/24 network.
How do i setup static route. Please provide me the steps.
10.10.10.0/24 and 10.10.20.0/24
10.10.10.0 - two systems
10.10.10.33
10.10.10.37
10.10.20.0 - two system
10.10.20.2
10.10.20.3
I have another system which is connected 10.10.10.0/24 and 10.10.20.0/24 network
I want to be able to ping 10.10.20.2 maching from 10.10.10.0/24 network.
How do i setup static route. Please provide me the steps.
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10 Comments
from system(10.10.10.37) i did use this command
route add -net 10.10.20.0 netmask 255.255.255.0 gw 10.10.10.6 dev eth0
still not working. what is wrong here.
route add -net 10.10.20.0 netmask 255.255.255.0 gw 10.10.10.6 dev eth0
still not working. what is wrong here.
[root@smtp ~]# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:0C:29:09:87:50
inet addr:10.10.10.37 Bcast:10.10.10.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe09:8750/6
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:151297 errors:0 dropped:0 overruns:0 frame:0
TX packets:5008 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:649322 (634.1 KiB) TX bytes:360510 (352.0 KiB)
[root@smtp ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.10.20.0 10.10.10.6 255.255.255.0 UG 0 0 0 eth0
10.10.10.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0
169.254.0.0 0.0.0.0 255.255.0.0 U 1002 0 0 eth0
[root@smtp ~]# ping 10.10.20.4
PING 10.10.20.4 (10.10.20.4) 56(84) bytes of data.
64 bytes from 10.10.20.4: icmp_seq=1 ttl=64 time=0.335 ms
64 bytes from 10.10.20.4: icmp_seq=2 ttl=64 time=0.259 ms
But I am unable to ping 10.10.20.2.
From 10.10.20.4 system i can ping 10.10.20.2.
[root@smtp ~]# ping 10.10.20.2
PING 10.10.20.2 (10.10.20.2) 56(84) bytes of data.
eth0 Link encap:Ethernet HWaddr 00:0C:29:09:87:50
inet addr:10.10.10.37 Bcast:10.10.10.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe09:8750/6
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:151297 errors:0 dropped:0 overruns:0 frame:0
TX packets:5008 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:649322 (634.1 KiB) TX bytes:360510 (352.0 KiB)
[root@smtp ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.10.20.0 10.10.10.6 255.255.255.0 UG 0 0 0 eth0
10.10.10.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0
169.254.0.0 0.0.0.0 255.255.0.0 U 1002 0 0 eth0
[root@smtp ~]# ping 10.10.20.4
PING 10.10.20.4 (10.10.20.4) 56(84) bytes of data.
64 bytes from 10.10.20.4: icmp_seq=1 ttl=64 time=0.335 ms
64 bytes from 10.10.20.4: icmp_seq=2 ttl=64 time=0.259 ms
But I am unable to ping 10.10.20.2.
From 10.10.20.4 system i can ping 10.10.20.2.
[root@smtp ~]# ping 10.10.20.2
PING 10.10.20.2 (10.10.20.2) 56(84) bytes of data.
Hello,
Simpliest (but not dirty) way for your problem - set netmask to /16 255.255.0.0 and all systems can be in one subnet.
Simpliest (but not dirty) way for your problem - set netmask to /16 255.255.0.0 and all systems can be in one subnet.
I have many devices manually configured which i don't want to change. Is there any other better way. Why static route won' t work?
Network one - 10.10.10.0/24
Network two - 10.10.20.0/24
Network one - 10.10.10.0/24
Network two - 10.10.20.0/24
[root@smtp ~]# ifconfig eth0 | grep inet
inet addr:10.10.10.37 Bcast:10.10.10.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe09:8750/6
[root@smtp ~]# ip route show
10.10.20.0/24 via 10.10.10.6 dev eth0
10.10.10.0/24 dev eth0 proto kernel scope link src 10.10.10.37
192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1
169.254.0.0/16 dev eth0 scope link metric 1002
[root@ns ~]# ifconfig eth0 | grep inet
inet addr:10.10.20.4 Bcast:10.10.20.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:febb:a670/6
[root@ns ~]# ifconfig eth2 | grep inet
inet addr:10.10.10.6 Bcast:10.10.10.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:febb:a684/6
[root@ns ~]# ip route show
10.10.20.0/24 dev eth0 proto kernel scope link src 10.10.20.4
192.168.0.0/24 dev eth1 proto kernel scope link src 192.168.0.18
10.10.10.0/24 dev eth2 proto kernel scope link src 10.10.10.6
192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1
169.254.0.0/16 dev eth0 scope link metric 1002
169.254.0.0/16 dev eth1 scope link metric 1003
169.254.0.0/16 dev eth2 scope link metric 1004
default via 192.168.0.254 dev eth1
[root@mail ~]# ifconfig eth0 | grep inet
inet addr:10.10.20.2 Bcast:10.10.20.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:feaf:56f7/6
[root@mail ~]# ip route show
10.10.20.0/24 dev eth0 proto kernel scope link src 10.10.20.2
10.10.10.0/24 via 10.10.20.4 dev eth0
192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1
169.254.0.0/16 dev eth0 scope link metric 1002
default via 10.10.20.1 dev eth0
I want able to ping from 10.10.10.37 to 10.10.20.2 AND
from 10.20.10.2 to 10.10.10.37 vice versa.
I am using ns system as router which have access to both network.
inet addr:10.10.10.37 Bcast:10.10.10.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe09:8750/6
[root@smtp ~]# ip route show
10.10.20.0/24 via 10.10.10.6 dev eth0
10.10.10.0/24 dev eth0 proto kernel scope link src 10.10.10.37
192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1
169.254.0.0/16 dev eth0 scope link metric 1002
[root@ns ~]# ifconfig eth0 | grep inet
inet addr:10.10.20.4 Bcast:10.10.20.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:febb:a670/6
[root@ns ~]# ifconfig eth2 | grep inet
inet addr:10.10.10.6 Bcast:10.10.10.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:febb:a684/6
[root@ns ~]# ip route show
10.10.20.0/24 dev eth0 proto kernel scope link src 10.10.20.4
192.168.0.0/24 dev eth1 proto kernel scope link src 192.168.0.18
10.10.10.0/24 dev eth2 proto kernel scope link src 10.10.10.6
192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1
169.254.0.0/16 dev eth0 scope link metric 1002
169.254.0.0/16 dev eth1 scope link metric 1003
169.254.0.0/16 dev eth2 scope link metric 1004
default via 192.168.0.254 dev eth1
[root@mail ~]# ifconfig eth0 | grep inet
inet addr:10.10.20.2 Bcast:10.10.20.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:feaf:56f7/6
[root@mail ~]# ip route show
10.10.20.0/24 dev eth0 proto kernel scope link src 10.10.20.2
10.10.10.0/24 via 10.10.20.4 dev eth0
192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1
169.254.0.0/16 dev eth0 scope link metric 1002
default via 10.10.20.1 dev eth0
I want able to ping from 10.10.10.37 to 10.10.20.2 AND
from 10.20.10.2 to 10.10.10.37 vice versa.
I am using ns system as router which have access to both network.
All routing configuration fine (mail: 10.10.10.0/24 via 10.10.20.4 smtp: 10.10.20.0/24 via 10.10.10.6).
May u need enable forwarding on ns node:
echo "net.ipv4.ip_forward = 1" >> /etc/sysctl.conf
sysctl -p
Can u see forwarded packet in iptables (iptables -nvL FORWARD)?
May u need enable forwarding on ns node:
echo "net.ipv4.ip_forward = 1" >> /etc/sysctl.conf
sysctl -p
Can u see forwarded packet in iptables (iptables -nvL FORWARD)?
route add -net 10.10.20.0 netmask 255.255.255.0 gw 10.10.10.6 dev eth0
How do i make this permanent.
How do i make this permanent.
Hello,
U need create files: /etc/sysconfig/network-scr
10.10.20.0/24 via 10.10.10.6 dev eth0
and
10.10.10.0/24 via 10.10.20.4 dev eth0
U need create files: /etc/sysconfig/network-scr
10.10.20.0/24 via 10.10.10.6 dev eth0
and
10.10.10.0/24 via 10.10.20.4 dev eth0
Hi,
First of all your machine with 2 interfaces should must be enabled for routing. (it is off by default). To enable routing use this procedure:
Then all your systems at both sides should use your router (RedHat with 2 interfaces) either as default gateway so the traffic for the other network should go to your router or you need to create static route setting on each system to point to the router (at both interfaces)
Cheers,
K.
First of all your machine with 2 interfaces should must be enabled for routing. (it is off by default). To enable routing use this procedure:
edit your /etc/sysctl.conf file to include
net.ipv4.ip_forward = 1
Then all your systems at both sides should use your router (RedHat with 2 interfaces) either as default gateway so the traffic for the other network should go to your router or you need to create static route setting on each system to point to the router (at both interfaces)
Cheers,
K.
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