Date: Mon, 12 Feb 2001 13:34:18 -0800 (PST) From: Luigi Rizzo <rizzo@aciri.org> To: apina@infolink.com.br (Antonio Carlos Pina) Cc: rizzo@aciri.org, freebsd-stable@freebsd.org Subject: Re: BRIDGE breaks ARP? Message-ID: <200102122134.f1CLYNd90428@iguana.aciri.org> In-Reply-To: <00b401c0953f$92453020$0b6cffc8@infolink.com.br> from Antonio Carlos Pina at "Feb 12, 2001 7: 3: 2 pm"
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hi, i am not sure i understand what you want to do. luigi > > I'm running a Bridge+IPFW+Dummynet box between my lan and my router (which > is my default gateway). I access the box via SSH and everything is working > great. > > I would like to do some routing in this box too (offloading the router), but > I would like to do that WITHOUT have to change all default gateways in our > Workstations. I thought the best option here would be to configure the > DEFAULT GATEWAY IP ADDRESS in the Bridge Box, but in this scenario I would > have to change the router ip address also (since I will be using it in our > bridge box). > > Is there any way you know that I can intercept and re-route packets using > the box as bridge ? I mean, the default gateway is still my router, but some > packets don't arrive in it, because the bridge box can send them to another > ethernet card. > > Thanks for listening and best regards, > Antonio Carlos Pina > apina@infolink.com.br > > > > > > ----- Original Message ----- > From: "Luigi Rizzo" <rizzo@aciri.org> > To: "Vincent Poy" <vince@oahu.WURLDLINK.NET> > Cc: <rizzo@aciri.org>; <ishizuka@ish.org>; <freebsd-net@FreeBSD.ORG>; > <freebsd-stable@FreeBSD.ORG> > Sent: Monday, February 12, 2001 5:25 AM > Subject: Re: BRIDGE breaks ARP? > > > > > > whether or not you have "options BRIDGE' in your kernel config file. > > > > (or a message saying "BRIDGE ..." when the system boots) > > > > > > My kernel config doesn't have the BRIDGE option so I guess the > > > bridging code is part of ET's drivers. > > > > yes, i suspected so... > > > > luigi > > > > > > > > Cheers, > > > Vince - vince@WURLDLINK.NET - Vice President ________ __ > ____ > > > Unix Networking Operations - FreeBSD-Real Unix for Free / / / / | / > |[__ ] > > > WurldLink Corporation / / / / | / | > __] ] > > > San Francisco - Honolulu - Hong Kong / / / / / |/ / | > __] ] > > > HongKong Stars/Gravis UltraSound Mailing Lists Admin > /_/_/_/_/|___/|_|[____] > > > Almighty1@IRC - oahu.DAL.NET Hawaii's DALnet IRC Network Server Admin > > > > > > > > > > > > > root@oahu [8:24pm][/usr/temp/zebra] >> ifconfig bg0 > > > > > > > bg0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 > > > > > > > inet 216.235.44.1 netmask 0xffffff00 broadcast > 216.235.44.255 > > > > > > > inet 216.235.45.1 netmask 0xffffff00 broadcast > 216.235.45.255 > > > > > > > inet 216.235.56.193 netmask 0xffffffe0 broadcast > 216.235.56.223 > > > > > > > ether 00:00:00:03:00:00 > > > > > > > > > > > > > > I've asked Dennis at ETinc the question and his response was: > > > > > > > > > > > > > > if you want to route from one DLCI to the other then you have to > put them > > > > > > > in separate bridge groups with their own subnet. You are > creating isolated > > > > > > > segments with the ipmap functionality...the mechanism is > designed for end > > > > > > > users who get 1 or 2 addresses. > > > > > > > > > > > > > > You COULD fix the O/S to route back to the same interface, but I > dont know > > > > > > > how complicated that would be. I dont think there is an easy way > to > > > > > > > disable > > > > > > > split-horizon. > > > > > > > > > > > > > > Dennis > > > > > > > > > > > > > > > > > > > > > Cheers, > > > > > > > Vince - vince@WURLDLINK.NET - Vice President > ________ __ ____ > > > > > > > Unix Networking Operations - FreeBSD-Real Unix for Free / / / / > | / |[__ ] > > > > > > > WurldLink Corporation / / / / > | / | __] ] > > > > > > > San Francisco - Honolulu - Hong Kong / / / / / > |/ / | __] ] > > > > > > > HongKong Stars/Gravis UltraSound Mailing Lists Admin > /_/_/_/_/|___/|_|[____] > > > > > > > Almighty1@IRC - oahu.DAL.NET Hawaii's DALnet IRC Network Server > Admin > > > > > > > > > > > > > > > > > > > > > > > I'm not sure if this is related but we're using FreeBSD with > a > > > > > > > > > Emerging Technologies T1 card to do ADSL Bridging and ran > into a problem > > > > > > > > > where for example, if a bridge group was like... > > > > > > > > > > > > > > > > > > 216.235.44.1 255.255.255.0 > > > > > > > > > > > > > > > > > > All the nodes 216.235.44.2-254 can see 216.235.44.1 fine but > it > > > > > > > > > nothing in 216.235.44.2 - 254 can see each other. It seems > to be they > > > > > > > > > can't see each other if they are in the same subnet. So it > seems all > > > > > > > > > machines in the bridge group can see the gateway and the > rest of the > > > > > > > > > world but not each other. Is there a way around this? This > is with > > > > > > > > > 4.1-RELEASE, 4.1.1-RELEASE and even 4.2-RELEASE. > > > > > > > > > > > > > > > > > > > > > > > > > > > Cheers, > > > > > > > > > Vince - vince@WURLDLINK.NET - Vice President > ________ __ ____ > > > > > > > > > Unix Networking Operations - FreeBSD-Real Unix for Free / / > / / | / |[__ ] > > > > > > > > > WurldLink Corporation / / / > / | / | __] ] > > > > > > > > > San Francisco - Honolulu - Hong Kong / / / > / / |/ / | __] ] > > > > > > > > > HongKong Stars/Gravis UltraSound Mailing Lists Admin > /_/_/_/_/|___/|_|[____] > > > > > > > > > Almighty1@IRC - oahu.DAL.NET Hawaii's DALnet IRC Network > Server Admin > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > > > > > > > > with "unsubscribe freebsd-net" in the body of the message > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > > > > > > with "unsubscribe freebsd-net" in the body of the message > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > > with "unsubscribe freebsd-net" in the body of the message > > > > > > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-stable" in the body of the message > > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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