OLSR does put its handshaking on the sectors, but you are right, no data traffic goes down that alternate until the primary fails. The changeover is typically within 15 to 30 seconds.
The other cool thing is being able to add ADSL backups into the system, at various spots (could be T1, cable, etc), and by assigning weights to them, you can have automatic gateway selection if your primary goes down. We have had these backups and alternate paths for years, but we managed them manually. It worked but what a pain it was, and things were frantic while you tried to figure out what went down and then get in and change routing by hand. Once things restored we had to go back in and roll the changes back. It was cool to be able to do those things, but it is even cooler to have those same capabilities but not to have to any of the manual changing. In this way I do say that smart engineers (OLSR developers) have coded the thing to be better than a human network techie (me). I know networking better than a lot of you guys and I still make mistakes. OLSR does not seem to be fooled and I have no hesitation in saying it is better than I am at routing decisions. Is it perfect? Is it the answer for all routing? NO to both, but it sure beats the way a lot of people are doing it. Lonnie On 2/25/06, Brad Larson <[EMAIL PROTECTED]> wrote: > Or how about automatic sector failover that puts no traffic on the network > when things are working correctly. Brad > > > > > > -----Original Message----- > From: Lonnie Nunweiler [mailto:[EMAIL PROTECTED] > Sent: Saturday, February 25, 2006 12:02 AM > To: WISPA General List > Subject: Re: [WISPA] Mesh Equipment > > > Tom, what if you could take the Cell/Sector system and add some > routing that determined when a path had stopped and chose another one. > > You have controlled this by your choice of units to make those cross > connections and really all that is happening is that the mesh routing > is constantly testing to see if it needs to try another route. > > We used to do this manually and what a pain it was. This new routing > does what I used to do, except it does not sleep, have bathroom breaks > or go out for lunch. You can assign weights to connections and force > your chosen route to get used, at least until it goes down, which > hopefully never happens, but if and when it does you are covered with > your alternate path. > > What is so terrible about that? > > Lonnie > > On 2/24/06, Tom DeReggi <[EMAIL PROTECTED]> wrote: > > Brad, > > > > I agree. Our downtown Mesh versus Cell/Sector trials proved exactly that> > Our tests showed that the cities like DC could be better served with > > Cell/Sector models more effectively. > > As a matter of fact, Alvarion product, appeared to be well equiped for > that > > task. > > I think projects like Phili's will bring a rude awakening. I can't prove > > that, but there is no reason for me to. > > Thats the point of modelling. So you can pre-dict BEFORE you spend. > > Its the Muni's budget to pay for, to find the true answer, not mine. > > > > Tom DeReggi > > RapidDSL & Wireless, Inc > > IntAirNet- Fixed Wireless Broadband > > > > > > ----- Original Message ----- > > From: "Brad Larson" <[EMAIL PROTECTED]> > > To: "'WISPA General List'" <wireless@wispa.org> > > Sent: Friday, February 24, 2006 2:49 PM > > Subject: RE: [WISPA] Mesh Equipment > > > > > > > Tom, IMHO mesh is great for lighting up downtown and city parks etc. but > > > it > > > has yet to prove itself in a large deployment with 1,000's of customers > or > > > 1,000's of nodes deployed. I too have first hand experience backhauling > > > several mesh projects and the mesh edge so far has not been easy at all> > > Here in Northeast USA 15 mesh nodes per square miles doesn't even come > > > close > > > to what's needed. I've also found that implementing mesh in major metro > > > areas, where there are already 1,000's of wifi access points, shrinks > > > coverage models and can turn a well intentioned response to an RFP > > > laughable. I believe Philadelphia projects 70k users in 5 years on 3900 > > > mesh > > > nodes backhauled by Canopy. We'll see. > > > > > > I'd love to see a comparison of our BreezeAccess VL with one mile > centers > > > and our high powered DS11 on the edge in Anytown USA vs mesh. I'm > working > > > on > > > a few of my guys to do such a test so stay tuned. > > > > > > What it comes down to is the fact that Matt may have just the right > > > terrain > > > and noise floor without the traffic that some of these larger projects > > > will > > > get hammered with so it works for his company. Mesh is a tool for a > > > certain > > > job just like other gear. But I don't believe mesh should be construed > as > > > broadband for the masses in any major metro area. Brad > > > > > > > > > > > > > > > -----Original Message----- > > > From: Tom DeReggi [mailto:[EMAIL PROTECTED] > > > Sent: Friday, February 24, 2006 2:28 PM > > > To: WISPA General List > > > Subject: Re: [WISPA] Mesh Equipment > > > > > > > > > Matt, > > > > > > I think you are misinterpretting my comments. Don't read more in to them > > > than are there. > > > I am in no way attacking the validity of your experience or comments. > I'm > > > simply asking for more detail, so that I can learn from your experience> > > > > > -- > > > WISPA Wireless List: wireless@wispa.org > > > > > > Subscribe/Unsubscribe: > > > http://lists.wispa.org/mailman/listinfo/wireless > > > > > > Archives: http://lists.wispa.org/pipermail/wireless/ > > > > -- > > WISPA Wireless List: wireless@wispa.org > > > > Subscribe/Unsubscribe: > > http://lists.wispa.org/mailman/listinfo/wireless > > > > Archives: http://lists.wispa.org/pipermail/wireless/ > > > > > -- > Lonnie Nunweiler > Valemount Networks Corporation > http://www.star-os.com/ > -- > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > > > > This mail passed through mail.alvarion.com > > **************************************************************************** > ******** > This footnote confirms that this email message has been scanned by > PineApp Mail-SeCure for the presence of malicious code, vandals & computer > viruses. > **************************************************************************** > ******** > > > This mail passed through mail.alvarion.com > > **************************************************************************** > ******** > This footnote confirms that this email message has been scanned by > PineApp Mail-SeCure for the presence of malicious code, vandals & computer > viruses. > **************************************************************************** > ******** > -- > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > -- Lonnie Nunweiler Valemount Networks Corporation http://www.star-os.com/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
