Routing with two internet gateways

From: Jacob Anawalt (anawaltaj@qwest.net)
Date: Fri Jan 19 2001 - 01:19:42 EST


I am having a tough time with a RH6.2 system's routing tables. We have 2
gateways to the internet, and I am only defining one default route.

I am dealing with 3 networks, ISP1, ISP2, and a private network.

On a RH7 machine, using the ISP1 gateway, I can telnet in from outside
to either ip address and be just fine. On the RH6.2 machine, ISP2 is the
default gw, and I don't get any response pinging or trying to telnet to
it's card on ISP1's network.

Here are the routing tables:

7.0box:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
63.230.15.176 0.0.0.0 255.255.255.248 U 0 0 0
eth2
207.224.221.0 0.0.0.0 255.255.255.0 U 0 0 0
eth0
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0
eth1
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0
lo
0.0.0.0 207.224.221.52 0.0.0.0 UG 0 0 0
eth0

6.2 box
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
63.230.15.176 0.0.0.0 255.255.255.248 U 0 0 0
eth2
207.224.221.0 0.0.0.0 255.255.255.0 U 0 0 0
eth0
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0
eth1
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0
lo
0.0.0.0 63.230.15.182 0.0.0.0 UG 0 0 0
eth2

Any ideas? Thanks in advance for your attention to this.
Jacob Anawalt,
anawaltaj@qwest.net

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