From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 4 Jan 2007 13:03:16 -0800 From: Stephen Hemminger Message-ID: <20070104130316.1147e9b6@freekitty> In-Reply-To: References: <458ACFAC.6070006@schaus.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Re: [Bridge] Monitor the status of two ethernet interface List-Id: Linux Ethernet Bridging List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Jie Chen Cc: bridge@lists.osdl.org On Thu, 04 Jan 2007 20:39:12 +0000 "Jie Chen" wrote: > Hi all, > > I hope everybody had a great holiday. > > I got a question in applying ethernet bridge in Linux boxes. The scenario > I'm trying to simulate is like this: I have 3 linux boxes in total, > everyone has 2 ethernet ports, one port is connected to Power line modem, > and the other to wifi modem. The power line modem failed, so it's the same > as I have just one port for each. I put them apart, Box A is in one end, and > Box C is in another end, and Box B in the middle, so that Box A can talk to > B but not C. Box B can talk to A and C. Box C and talk to B but not A. Now I > set bridge on, the question is am I able to let A and C talk? > > The reason I have this question is according to bridge, B get packets from A > on one port, and suppose to deliver to C from the other port, but the other > port didn't work. So I would think the packets can't be delivered from A to > C, is that the case? > > Thanks a lot, > Jie > > True bridging to Wifi won't usually work see the http://linux-net.osdl.org/index.php/Bridge The problem is that internally Wifi is not a Bus network like Ethernet, but is really point-to-point from host to access point. -- Stephen Hemminger