experimenting with 2 ISP's

Edmundo Carmona eantoranz at gmail.com
Mon Aug 15 23:06:57 CEST 2005


That's not the right way to set the default GW.

You have to use IP. Remove your default GWs. then:

ip route add default netxhop via 196.36.10.114 dev eth0 nexthop via
196.168.10.100 dev eth2
ip route flush cache.

If you set the routing tables correctly, It should start working right away.

On 8/15/05, Brent Clark <bclark at eccotours.dyndns.org> wrote:
> Hi list
> 
> I have just a added a few rules to my routing table.
> 
> Would someone be so kind as to see if my setup is correct.
> 
> My setup is as so
> 
> eth0
> IP 196.36.10.114
> GW 196.36.10.113 (my routers IP)
> 
> eth1 192.168.111.10
> PRIVATE LAN
> 
> eth2
> IP 192.168.10.200
> GW 192.168.10.100 (my adsl modem)
> 
> Please keep in mind that my router that is connected to eth0 has a static ip, where as my adsl modem that is connected to eth2 is dynamically assigned.
> 
> echo 200 IS >> /etc/iproute2/rt_tables
> echo 201 TELKOM >> /etc/iproute2/rt_tables
> 
> /sbin/ip route add 196.36.10.0 dev eth0 src 196.36.10.114 table IS
> /sbin/ip route add default via 196.36.10.113 table IS
> 
> /sbin/ip route add 192.168.10.0 dev eth2 src 192.168.10.100 table TELKOM
> /sbin/ip route add default via 192.168.10.100 table TELKOM
> 
> /sbin/ip route add 196.36.10.0 dev eth0 src 196.36.10.114
> /sbin/ip route add 192.168.10.0 dev eth2 src 192.168.10.100
> 
> /sbin/ip route add default via 196.36.10.113
> 
> /sbin/ip rule add from 196.36.10.114 table IS
> /sbin/ip rule add from 192.168.10.100 table TELKOM
> 
>  From my routing table all seem ok:
> gate:~# route -n
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
> 196.36.10.0     0.0.0.0         255.255.255.255 UH    0      0        0 eth0
> 192.168.10.0    0.0.0.0         255.255.255.255 UH    0      0        0 eth2
> 196.36.10.112   0.0.0.0         255.255.255.248 U     0      0        0 eth0
> 192.168.111.0   0.0.0.0         255.255.255.0   U     0      0        0 eth1
> 192.168.10.0    0.0.0.0         255.255.255.0   U     0      0        0 eth2
> 0.0.0.0         196.36.10.113   0.0.0.0         UG    0      0        0 eth0
> gate:~#
> 
> If anyone has any tips or advise they would care to add, it would be most appreciated.
> 
> Kind Regards
> Brent Clark
> 
> 
>



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