From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 8 Oct 2009 23:01:41 -0700 From: Stephen Hemminger Message-ID: <20091008230141.32c57e6e@nehalam> In-Reply-To: <88ed5400910071322l360fe50cn2986895549f60f82@mail.gmail.com> References: <88ed5400910071322l360fe50cn2986895549f60f82@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Re: [Bridge] Distributed RSTP List-Id: Linux Ethernet Bridging List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: NITIN SS Cc: bridge@lists.linux-foundation.org On Wed, 7 Oct 2009 13:22:44 -0700 NITIN SS wrote: > Hi, > > I am new to this RSTP/Bridge group and currently planning on distributed > RSTP. > > First of all, Distributed RSTP mean as, we will have 8 linux RSTPs and they > all will have the same Bridge ID. So you plan to take a perfectly good spec 802.1d and break it. Why? > As all bridges will have the same Bridge ID so I need to sync many variables > functions across all units. You are off in never-never fantasy land. Stop and ask why are you doing this? It is like the old joke: "Doctor it hurts when I hit my head with my fist..." > Additionally there should be only one root port for all the eight bridges. > In this way there should be one master which would be maintaing bridge > variables and controlling bridge operations. > There is only point to point link between all bridges through master. > Additioanlly most of the RSTP state machines are port based so it looks > feasible. > > As your guys are RSTP experts, so i think it would be the right place to get > suggestions/comments. > > -What would be the limitations/complex Issues? > -Is it feasible? > At top level it looks like there would be lot of efforts with respect to > final outcome. > -Is there any implementation of distributed RSTP? > > Appreciate your comments. > > Regards, > Nitin --