Hi,
I have a linux box connected to two leased lines as follows:
_/\__/\_
/ \ +--------+ +------------+
( Internet )----+ Router | | SMTP server|
\_ __ _/ +----+---+ +------+-----+
\/ \/ | 200.200.200.254 |
100.100.100.2\ -+-------+----- ... ---------+--
100.100.100.1\ | 200.200.200.1
+-+--+--+
| Linux |
+---+---+ _/\__/\_
192.168.1.1 | / \
-+------( Intranet )
\_ __ _/
\/ \/
The router came first when there was a small intranet. Now the network
has grown very much and we were unable to upgrade our link speed because
the local telco is unable to provide a 128Kbps link. Then we decided to
install a linux box to act as a proxy server (squid) with a wanpipe card
and lease a frame-relay link. This new link would have a different IP
address and there would be two squids running. One would use the old
link and another the new one. In order to achieve that I first attached
the outgoing IP address for each squid to the propper network interface.
Then I followed Adv-Routing HowTo and tried the following:
# ip rule add from 100.100.100.1 table 200
# ip route add default via 100.100.100.2 table 200
# ip route add default via 200.200.200.1 table main
# ip route flush cache
I tried some traceroutes with the -s option to check whether this was
working but apparently it was not. I also tried to create the default
route via 200.200.200.1 on table 253 but it behaved just the same way.
Then I created it on a custom table (201) and added a rule for it. Then
the network was unreachable.
I tried the same things on kernel 2.2.14 (suse 6.4) and kernel 2.2.16
(on a modified redhat). I tried also on a machine with two network
cards. I also played with /proc/sys/net/ipv4/ip_forward.
The ip command version was ss991023 (suse 6.4) and ss001007 on redhat.
What am I doing wrong?
Thank you,
Gustavo.
--
"E pur si muove"
-- Galileo Galilei
