Re: unable to route traffic between two networks on Red Hat 6.2

[Ian Zapczynski <ianz@quarterleaf.com>]

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Thanks again, all, for your thoughts and suggestions.

You're right - the static routes were overkill.  I have since removed them,
but for some reason I am still unable to route between the two networks.

Indeed I have set my router as the default gateway for my client machines
using the 192.168.1.1 address that they can contact it on.  When a client
machine tries to ping a 10.1.1.0 address, I can see via Ethereal that the
request goes to my router.  I just still stumped as to why it won't forward
the traffic on to the proper host!

Being somewhat green on Linux administration, I even went to the bookstore
last night to check out a Red Hat admin book.  It seems to tell me pretty
much what you kind folks have already told me.

Hmmm... when I figure this out, I know it's going to be something I'll want
to slap myself over.  ;-)

-Ian

helmut djurkin wrote:

> On Tue, 2002-04-09 at 15:44, Ian Zapczynski wrote:
> > Hello all.
> >
> > I am a Sun administrator needing to get a router set up on Red Hat 6.2.
> > I am simply trying to join two private networks, 192.168.0.0 and
> > 10.1.1.0.  The router I have configured has eth0 at 10.1.1.100 and eth1
> > at 192.168.1.1.  I do not need to be able to route traffic to the
> > internet using NAT -- I only need a DHCP server on my 192.168.0.0
> > network to give out IP addresses on that network (this works fine) that
> > will allow users to access the 10.1.1.0 network.
> >
> > On my router, currently I can ping an address on the 10.1.1.0 network,
> > but not when I use something like ping -I 192.168.1.1 10.1.1.1 to do
> > so.  This should work, right?
> >
> > /etc/sysconfig/network looks like:
> >
> > NETWORKING=yes
> > HOSTNAME=myhost.mydomain
> > GATEWAYDEV=eth0
> > GATEWAY=10.1.1.1
> > FORWARD_IPV4=YES
> >
> > /etc/sysconfig/static-routes has:
> >
> > eth1 net 192.168.0.0 netmask 255.255.0.0 gw 192.168.1.1
> > eth0 net 10.1.1.0 netmask 255.255.255.0 gw 10.1.1.100
>
> no need to set static-routes. your interface config do these settings in
> /etc/sysconf/network-scripts/ifup-routes automatic.
>
> with your settings in static-routes you have double entries in the
> output from /sbin/route.
>
> the correct entrys from /sbin/route -n would be somethink like this:
> 10.1.1.0     0.0.0.0  255.255.255.0   U     0      0        0 eth0
> 192.168.0.0  0.0.0.0  255.255.0.0     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      10.1.1.1 0.0.0.0         UG    0      0        0 eth0
>
> bye,
> helmut
>

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