routing question

[Paul Howarth]

On Tue, 2005-02-08 at 15:19 -0500, Scot L. Harris wrote:
> On Tue, 2005-02-08 at 14:16, Douglas Frank wrote:
> > I'm unable to reach local networks from the new fc3 box, that I've never 
> > had trouble with using other unixes (or Slackware for that matter). 
> > It's been my experience that simply kicking off routed or gated was all 
> > it took to make the world accessible.  FC3 is different!
> > 
> > We have several networks here at work and my question is, how do I set 
> > up the routing table to reach them?  Example:
> > 
> > 16.140.160/24  <-- fc3 box is on this one
> > 16.47.32/24
> > 16.32.176/24
> > ..several others..
> > 
> > Here's the output of route(8):
> > 
> > Kernel IP routing table
> > Destination  Gateway        Genmask       Flags Metric Ref Use Iface
> > 16.140.128.0 16.140.128.238 255.255.255.0 UG    0      0     0 eth0
> > 16.140.128.0 0.0.0.0        255.255.255.0 U     0      0     0 eth0
> > 169.254.0.0  0.0.0.0        255.255.0.0   U     0      0     0 eth0
> > 0.0.0.0      16.140.128.238 0.0.0.0       UG    0      0     0 eth0
> > 
> > eth0 is 16.140.128.238
> > 
> > I can reach anything on the home network, 16.140.128, but nothing on any 
> > of the others.  What have I screwed up/left out?
> 
> Assuming the default gateway 16.140.128.238 knows about your other LANs
> this should work.  However it looks to me as if you have two default
> gateways specified.   The first entry in your list above appears to be
> incorrect.  The second entry is for your interface and is what will
> handle your locally connected LAN.  The third entry is provided by the
> useless zeroconf code, should not cause any problems but does nothing
> for you.  The last entry is your actual default gateway.

16.140.128.238 isn't really his default gateway, it's his own IP
address. This was due I think to finger trouble as Douglas now appears
to have got things working.

> If the other LANs you are trying to get to go through a different router
> on the local lan then you will need to define routes to those routers
> for those LANs.  

Yep.

Paul.
-- 
Paul Howarth <paul at city-fan.org>