routing question

[Scot L. Harris]

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.

If that default gateway does not know about your other LANs you won't
get there from here.  :)

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.  

Try using traceroute to help figure out the path that your packets go
for particular networks.

-- 
Scot L. Harris
webid at cfl.rr.com

To be is to be related.
		-- C.J. Keyser.