Date: Fri, 4 Jun 1999 11:32:39 -0700 (PDT) From: Brad Tucker <zvi@zvi.t-networking.com> To: cjclark@home.com Cc: freebsd-questions@FreeBSD.ORG Subject: Re: 2 ethernet cards (fwd) Message-ID: <Pine.BSF.4.05.9906041131590.291-100000@zvi.t-networking.com> In-Reply-To: <199906040557.BAA02090@cc942873-a.ewndsr1.nj.home.com>
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Ok, This works. Thanks again for everyones help!! Thanks, Brad On Fri, 4 Jun 1999, Crist J. Clark wrote: > Brad Tucker wrote, > > OK. the cisco router is 206.117.19.1. > > The _interface_ on your side of the router is 206.117.19.1. Interfaces > have IP addresses, not hosts. Associating a machine with an IP will > cause confusion once there are multiple interfaces on one. > > > It takes a class c and subnets it > > into 2 subnets. this leaves me with 0-127 and 128-255. I get half the > > class c. my half is 0-127. now strait from the router I plug into the > > freebsdbox, into ed0 wich is 206.117.19.2. > > OK, got it. > > > The idea i had was to put two > > ether net cards itno the freebsd box and make it a router. So i added the > > appropriate ifconfig entries, and added another ethernet card ed1. Out of > > ed1 goes to a hub, and out from the hub go all the macintoshes. > > This will work if configured correctly. > > > zvis ethernet card is ed0. > > You just said it had two. > > > What does NATd do and why would I need that. I > > You can tell NATd to listen on the ed0 interface and when it hears the > router, 206.117.19.1, arp'ing for machines on 206.117.19.64/26, it > will answer and it will forward the packets appropriately. But this is > not the easiest way if you have access to the router's config. > > > tried routed, and that doesnt seem to work. > > It depends if the router will listen to ICMP directs from the FreeBSD > box (and of course, the FreeBSD box needs to be configured correctly). > > > Is what im trying even possable. > > Sure is[0]. > > > The reason im doing this is to isolate the apple talk network running with > > netaalk. > > Bet you did not think it would be this much work? :) You have the > FreeBSD box done right from what I saw in your rc.conf. Those > ifconfigs should set up the routing table correctly. Now for the > router, this is what I think the easiest configuration is. All > commands are how you would tell a FreeBSD system to do this. I don't > have my Cisco books at home and haven't fiddled enough to know the > syntax by heart. > > # ifconfig <interface> 206.117.19.1 netmask 0xffffffc0 > # route add -net 206.117.19.64 -netmask 0xffffffc0 206.117.19.2 > > Now that I think of it, the netmask there is not needed, but the way > to tell the Cisco will be different anyway. Hope this helps. > > [0] We used to have something more elaborate at the office... well, we > still do actually. We have a whole C class net, but for hardware > reasons (BNC cable) we had to break it up into > pieces. Specifically, we have a bunch of 27 bit (32 address, 30 > usable) nets. We too have a Cisco router. The router has the '1' > address of our net[1] and talks locally to the lower 32 > machines. All of the other 32 host nets are specified as static > routes in the Cisco's routing table. All of the other subnets go > to one address (30) where a NetWare box (yuck, it predates me > at this job) routes 'em all appropriately. And it does work > fine... well, when sunspots, moon phases, or tides are not causing > the NetWare box to flake out. > > [1] Actually, we have two adjacent C class nets at work. The other C > class is comes over the same Cisco on the same interface (the > interface is aliased to the '1' address on both nets), and the > entire net is on one wire (it goes to some hubs and a Cisco > switch, actually). Right now, this whole C class and the lower 32 > of the other C class are on the same wire really... makes for fun > addressing. ;) Oh, and I suck up old machines no one wants (486s, > 586s) and run a 192.168.0 net in my office behind a NAT box. So, > there is another net too. The fun never ends. >:) > -- > Crist J. Clark cjclark@home.com > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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