Date: Sat, 29 Sep 2007 21:49:36 -0600 From: "Simon Timms" <stimms@gmail.com> To: "Simon Timms" <stimms@gmail.com>, freebsd-questions@freebsd.org Subject: Re: Bridging interfaces Message-ID: <204aabdc0709292049p7f50ee47r5ec7155d338fb4c9@mail.gmail.com> In-Reply-To: <20070930020410.GG19429@hal.rescomp.berkeley.edu> References: <204aabdc0709291806t67c9f31u1ab05e5cdd83f258@mail.gmail.com> <20070930020410.GG19429@hal.rescomp.berkeley.edu>
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That makes a lot of sense, but I suppose I still don't understand why this isn't working. The handbook section on routing is pretty basic and it seems to come down to setting net.inet.ip.forwarding to 1 if you want to route packets between interfaces on a dual-homed host. I'm able to reach hosts on both subnets from the router and my routing table looks like: Internet: Destination Gateway Flags Refs Use Netif Expire default wireless UGS 0 9905 sis0 localhost localhost UH 0 134 lo0 192.168.1 link#1 UC 0 0 sis0 orinoco 00:d0:09:f8:f7:5a UHLW 1 268 lo0 192.168.1.255 ff:ff:ff:ff:ff:ff UHLWb 1 87 sis0 192.168.2 link#2 UC 0 0 rl0 192.168.2.255 ff:ff:ff:ff:ff:ff UHLWb 1 87 rl0 On 9/29/07, Christopher Cowart <ccowart@rescomp.berkeley.edu> wrote: > > On Sat, Sep 29, 2007 at 07:06:55PM -0600, Simon Timms wrote: > > Hello, > > I seem to be having some trouble bridging interfaces in FreeBSD > 6.2-STABLE. > > What I have are two interfaces > > > > rl0 - 192.168.2.2 > > sis0 - 192.168.1.2 > > > > and a bridge I've set up following the pages in the handbook. However > > frames don't seem to be routed from one interface to the other. The > > internet gateway for the networks lives on 192.168.1.1 and I am able to > > reach the internet from boxes on the 192.168.1.0/24 subnet but not from > the > > other. Tracing the route from a box on the 192.168.2.0/24 subnet the > > connection times out on the freebsd box, orinoco. > > A layer 2 bridge connects two physical network segments to create the > illusion of a single layer 2 network. In general, you have a single IP > subnet sitting on top of a layer 2 network. Think of a bridge as a > 2-port ethernet switch. > > If you want a single layer 2 network, try readdressing the > 192.168.2/24 side to be on the 192.168.1/24 subnet. > > If you need different subnets, you'll want to configure *routing* and > not bridging (See: handbook/network-routing.html). > > Good luck, > > -- > Chris Cowart > Lead Systems Administrator > Network & Infrastructure Services, RSSP-IT > UC Berkeley > >
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