hey folks,
I have to do a IP-Adress-Change on two Internet-Servers.
I already did something like that with another provider, they routed the new
IP-Adresses over the same physical network, I simply created an alias
(eth0:0) and it worked with either gateway.
The recent configuration: (it's the same for the Linux and the W2k-Server,
only different IP-Adresses)
old line new line
| |
| pub. server ip (213.33.76.50)
gateway checkpoint fw 1:1 NAT
(194.112.167.129) |
| gateway
| (10.1.3.1)
\ /
\ /
\ /
eth0 (194.112.167.130) eth1 (10.1.3.50)
\ /
server
I need for some days both IP-Addresses configured on the machine. (good old
nameserver-caches ..)
When I use the old gateway,
the server is not reachable via the new (external) IP-Addresse, and vice
versa.
When I do
route add default gw 194.112.167.129 dev eth0
route add default gw 10.1.3.1 dev eth1
only the old Address works, always the first default-gw which is found in
the routing-table is used.
kernel: 2.2.16
routing-table:
Destination Gateway Genmask Flags Met Ref Use Iface
1) 194.112.167.128 0.0.0.0 255.255.255.224 U 0 0 0 eth0
2) 10.1.3.0 10.1.3.1 255.255.255.0 UG 0 0 0 eth1
3) 10.1.3.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
4) 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo
5) 0.0.0.0 194.112.167.129 0.0.0.0 UG 0 0 0 eth0
Since I inserted line 2, eth1 works locally (ping works in the 10.1.3.0
network).
I did the same thing for a W2k-Server (same networks), there I created a new
network-connection with the new IP-Adress and the new Gateway, it works
fine.
The old Connection is still using the old Gateway.
Does anyone have some hints for me?
(I found some things like
ip rule add ... table 101, different routing-tables for each subnet, but I
don't know, if I'm on the right way)
Many thx!
Regards
Tom
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