Date: Mon, 1 Oct 2001 15:26:23 -0700 (PDT) From: Julian Elischer <julian@elischer.org> To: "Jasper O'Malley" <jooji@nickelkid.com> Cc: freebsd-net@freebsd.org Subject: Re: Netgraph bridging: what is LOCAL_IFACE? Message-ID: <Pine.BSF.4.21.0110011518111.87441-100000@InterJet.elischer.org> In-Reply-To: <Pine.BSF.4.21.0110011640270.38226-100000@cornflake.nickelkid.com>
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On Mon, 1 Oct 2001, Jasper O'Malley wrote: > On Mon, 1 Oct 2001, Julian Elischer wrote: > > > I think that if you send out a packet on one of these interfaces it may > > still make it out because we don't actually (last time I checked) bother > > to disconnect that, but all incoming packets will be passed to the bridge > > module, which will be keeoping track of MAC addresses and doing bridging > > as required. > > So, essentially, there's no TOP part of the virtual bnet0 interface to > move the packets up the network stack? Or have I got it wrong? The tops of all the NICS specified are basically disabled. You specifically re-enable ONE of them to act as your connection to the bridged virtual network. bnet 0 is a logical name for the bridging node in the netgraph namespace.. it is not an interface. You can have several separate bridges in the same machine.. just give each one a different bridge name.. > > > Now, if you want to be on that bridged network as well, then > > you need to nominate which of the NICS should be your representative on > > that bridged network. The TOP part of that NIC (the bit you assign > > addresses to) will be joined into the bridging set, just like all the > > other NICS (logically there is no difference). The bridging code will send > > it a copy of any packets that have it's MAC address as destination and > > broadcast packets, just as it would any other segment.. > > So the entire point of "nominating" a local interface is just to select > the MAC address by which your machine is known on the Ethernet? yes.. and to give an interface through which your routing tables can reach the bridged virtual network. > > I'm still a bit confused, though. Do you ifconfig your IP protocol > configuration on bnet0 (or whatever you decide to name the interface), > or on the LOCAL_IFACE interface? you give the IP address to the selected LOCAL_IFACE.. > > Cheers, > Mick > > > 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
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