Date: Fri, 19 Sep 1997 12:41:20 -0500 From: Prashant Dongre <pdongre@opentech.stpn.soft.net> To: Greg Lehey <grog@lemis.com>, Alex Weeks <Alex_Weeks@capitalland.com>, "'freebsd-questions@freebsd.org'" <freebsd-questions@FreeBSD.ORG> Subject: Re: I don't understand static routes afterall Message-ID: <3422B940.3E1A1BA7@opentech.stpn.soft.net> References: <01BCC41C.F85A7F20@cutthroat> <19970919105318.48856@lemis.com> <3422B7F1.BB478976@opentech.stpn.soft.net>
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Prashant Dongre wrote:
> Greg Lehey wrote:
>
> > On Thu, Sep 18, 1997 at 10:23:54AM -0500, Alex Weeks wrote:
> > > Well, just about the time I thought I new what I was doing I encountered
> > > the following. If anyone feels like explaining what's going on I would be
>
> > > interested.
> > >
> > > I have three subnets. I have a FreeBSD machine routing between subnet a
> > > and subnet b and another FreeBSD machine routing between subnet b and
> > > subnet c. The is necessary because the physical setup prevents one
> machine
> > > from connecting to all three subnets. Let's call the machine that sits
> > > between a and b machine A and the machine that sits between b an c machine
>
> > > B.
> > >
> > > In order to get subnet a to talk with subnet c I needed to include a
> static
> > > route in A. The static route should say something like "route all traffic
>
> > > for subnet c through <hostname> on subnet b" where <hostname> physically
> > > resides in machine B.
> > >
> > > Let me put numbers to it.
> > > Subnet a is 192.1.1.0
> > > Subnet b is 192.1.2.0
> > > Subnet c is 192.1.3.0
> > >
> > > I should have been able to accomplish the above with "route add -net
> > > 192.1.3.0 -interface 192.1.2.1" assuming 192.1.2.1 is the 192.1.2.0
> > > interface in machine B.
> > >
> > > But this didn't work. What's wierd however is that it did work to enter
> > > each hostname in invididually! I litterally typed
> > > route add 192.1.3.1 192.1.2.1
> > > route add 192.1.3.2 192.1.2.1
> > > route add 192.1.3.3 192 1.2.1
> > > etc....... for the entire subnet. Now it's working fine.
> > >
> > > Have I made a glaring error? Do I completely misunderstand subnets and
> > > routing?
> >
> > It would be nice to see the output of netstat -r and possible netstat
> > -a.
> >
> > Greg
> >
> > > In real life these are 27 bit class c subnets but that shouldn't matter
> for
> > > the example. I did include a "-netmask" statement in real life but it
> > > wouldn't make sense for this example.
> >
> > Just possibly it would. I've seen some bugs in this area when the
> > tables get big.
> >
> > Greg
>
> Hi,
>
> I faced the same problem when started using FreeBSD as router 2 years back.
>
> Just do not run routed.
>
> Add static routing entries in gated.conf in /etc like this.
>
> static {
> 192.168.1.0 mask 255.255.255.0 interface ix0 preference 150 ;
> } ;
>
Sorry for the last msg.... Please specify your particular network interface in
place of "ix0" and your subnet and not "192.168.1.0".
Prashant.
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