I will have one Gateway (or Router) instead of two with the following interfaces:
eth0 - ADSL eth1 - 192.168.1.0/24 eth2 - 10.0.0.0/24 ppp0 - pt-2-pt
Routes will look like this,
10.0.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
default ADSL
default PPP0
This is going to allow 192.168.1.0/24 connections to 10.0.0.0/24 and vice versa as well as to the internet.
Now, unless you're running dynamic routing like OSPF, RIP, or ( preferably) BGP one of your default routes will become redundant. In other words there is no need to run two internet connections in your connections.
For dynamic routing software on linux, please check:
http://www.zebra.org http://www.quagga.net
The Salisburys wrote:
Hi all
someone may help?
I have 2 home networks & 1 adsl connection.
all together 4 network cards & 1 ppp for adsl
one network is 10.0.0.x the other is 192.168.0.x (gateways are 10.0.0.1 & 192.168.0.1)
I have it only half working.
Both networks connect to the internet OK. But I can't connect from 10.0.0.x to 192.168.0.x although the reverse is OK. ie
I can connect from 192.168.0.x to 10.0.0.x
my 10.0.0.1 gateway machine: utilises "eth1" to connect to the ppp0 conection for adsl modem
my 10.0.0.1 gateway machine: utilises "eth0" to connect to the 10.0.0.x my 192.168.0.1 gateway machine: utilises "eth1" to connect to the 10.0.0.x my 192.168.0.1 gateway machine: utilises "eth0" to connect to the 192.168.0.x I am trying to work this out from the "route" manpage.
and am trying to add a new route .... see below. The commands, comments,output ....are from the 10.0.0.1 gateway machine.
Maybe I got the concept totally wrong. If you know the answer I guess you can understand & idon't need to explain more.
If you need more system output please just ask.
I am wondering whether I need a 3rd NIC on the 10.0.0.1 gateway... I hope not!
Any help gladly appreciated
Thanks Roger
Below is some of the terminal output: (10.0.0.1 gateway machine)
.....the " xxxx____________" are my comments
......the "#xxxxx" are terminal commands as root
.......the rest is "standard output"
it basically shows how the enviroment changes before & after the adsl connection is started
and before & after the " route add " commands are given.
IT DOESNOT WORK! (connect from 10.0.0.x to 192.168.0.x or simply ping)
#############################################################################################################
#adsl-stop
nonactive_ifconfig____________________________________
#ifconfig eth0 eth1 ppp0
eth0 Link encap:Ethernet HWaddr 00:A0:CC:75:43:BE inet addr:10.0.0.1 Bcast:10.0.0.255 Mask:255.255.255.0
eth1 Link encap:Ethernet HWaddr 00:A0:CC:75:28:11 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
nonactiveroute__________________________________
#route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.0.0.0 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
#adsl-start
activeroute____________________________________
#route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
172.31.196.24 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0
10.0.0.0 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
0.0.0.0 172.31.196.24 0.0.0.0 UG 0 0 0 ppp0
adding_newroute____________________________________
route add -net 192.168.0.0 netmask 255.255.255.0 dev eth0
route add -net 192.168.0.0 netmask 255.255.255.0 gw 192.168.0.1 dev eth0
new_route_added___________________________________
#route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
172.31.196.24 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0
10.0.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
192.168.0.0 192.168.0.1 255.255.255.0 UG 0 0 0 eth0
192.168.0.0 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
0.0.0.0 172.31.196.24 0.0.0.0 UG 0 0 0 ppp0
active_ifconfig____________________________________
#ifconfig eth0 eth1 ppp0
eth0 Link encap:Ethernet HWaddr 00:A0:CC:75:43:BE inet addr:10.0.0.1 Bcast:10.0.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth1 Link encap:Ethernet HWaddr 00:A0:CC:75:28:11 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
ppp0 Link encap:Point-to-Point Protocol inet addr:139.168.85.179 P-t-P:172.31.196.24 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1
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