Date: Fri, 19 Sep 1997 12:35:45 -0500 From: Prashant Dongre <pdongre@opentech.stpn.soft.net> To: Greg Lehey <grog@lemis.com> Cc: 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: <3422B7F1.BB478976@opentech.stpn.soft.net> References: <01BCC41C.F85A7F20@cutthroat> <19970919105318.48856@lemis.com>
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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 ;
} ;
Prashant.
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