Re: Route Table, more info
Jason:
You have nothing else on the ethernet segment that contains the router
internal interface and the debian eth1 interface, right? First, stop
paying for 2 IP addresses that you don't need. Assign "internal" IP
addresses to the router internal and debian eth1 interfaces, from one
of these IP networks: 10.0.0.0/8, 192.9.200.0/24, or, um... some class
B network whose number I can't think of right now.
So:
Machine Interface IP Address
---------- ---------- ----------
router eth_if 10.0.0.1
router isdn_if 207.158.140.137
debian eth0 131.107.2.216
debian eth1 10.0.0.2
Set up the router routing tables like this:
10.0.0.0/8 eth_if
131.107.2.0/24 gw 10.0.0.2
<ISP Gateway>/32 isdn_if
0.0.0.0/0 gw <ISP Gateway>
Set up the debian routing tables like this:
10.0.0.0/8 eth1
131.107.2.0/24 eth0
0.0.0.0/0 gw 10.0.0.1
(I used a kind of short-hand there, but I hope it's obvious what I was
trying to say.)
For every machine on the 131.107.2.0 network, you can now use the debian
machine as the gateway.
Does that work for you?
Marc
----------
Marc Mongeon <mongeon@bankoe.com>
Unix Specialist
Ban-Koe Systems
9100 W Bloomington Fwy
Bloomington, MN 55431-2200
(612)888-0123, x417 | FAX: (612)888-3344
----------
"It's such a fine line between clever and stupid."
-- David St. Hubbins and Nigel Tufnel of "Spinal Tap"
>>> "Jason" <username@tir.com> 11/23 6:21 AM >>>
Here is the current route table, (output of netstat -nr)
131.107.2.0 0.0.0.0 255.255.255.0 U 1500 0 0
eth0
127.0.0.0 0.0.0.0 255.0.0.0 U 3584 0 0 lo
The reason that it doesn't show the 207.158.140.138 address is because it
says that it can't reach the network when it runs the /etc/init.d/network
script. The current contents of /etc/init.d/network:
#! /bin/sh
ifconfig lo 127.0.0.1
route add -net 127.0.0.0
IPADDR=131.107.2.216
NETMASK=255.255.255.0
NETWORK=131.107.2.0
BROADCAST=131.107.2.255
GATEWAY=207.158.140.139
ifconfig eth0 ${IPADDR} netmask ${NETMASK} broadcast ${BROADCAST}
route -n add -net ${NETWORK}
ADDRESS=207.158.140.138
SUBNET=255.255.255.248
NET=207.158.140.0
BROADCAS=207.158.140.255
GATE=207.158.140.139
ifconfig eth1 ${ADDRESS} netmask ${SUBNET} broadcast ${BROADCAS}
route -n add -net ${NET}
[ "${GATE}" ] && route add default gw ${GATE} metric 1
Below is a diagram of our setup:
Internet
|
ISDN Router Connection to ISP (207.158.140.137)
|
ISDN Router Internal IP (207.158.140.139)
|
Debian box eth1 (207.158.140.138)
|
Debian box eth0 (131.107.2.216)
Now to recap a bit, the idea is that we need to use the debian box as the
gateway instead of the 3com ISDN router/modem. Also, on the ISDN modem, NAT
is disabled as well as DHCP. Again, if more information is needed please let
me know..
-Jason
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