On Sun, 2009-10-18 at 14:59 -0500, Mike Hammett wrote: > So in your described system, does it just use a single VPN link or multiple?
In all of the ones I've deployed, just a single vpn connection was sufficent. > I was thinking of your system before this thread came up and I was thinking > of each connection having its own VPN back and using OSPF to handle link > failures back home with each router having a loopback address everyone talks > to. This would work, too, although I think it is overkill. Using a sequence of events like: 1. we are connected via radio1 with a vpn originating from radio1 2. We "notice" low signal levels on radio1, toggle off the vpn, remove the IPs from radio1 (if needed) and switch to radio2 as our active radio 3. Set up appropriate IPs on radio2 and toggle the vpn tunnel on That sequence is not even going to take 1/2 second if you already have the radio connection on radio2. It would be unlikely to even drop a ping and more than likely, even a voip call would only "hiccup" instead of dropping. > I haven't done anything with any of these, so maybe I'm trying to solve a > problem that doesn't exist in your system. Not sure what you are trying to solve. I don't bother with the multiple tunnels, although it is certainly a possibility. Depending on the depth of the tests you run in your script, it could make the script(s) more or less complex, as you let OSPF worry about link viability. -- ******************************************************************** * Butch Evans * Professional Network Consultation* * http://www.butchevans.com/ * Network Engineering * * http://www.wispa.org/ * Wired or Wireless Networks * * http://blog.butchevans.com/ * ImageStream, Mikrotik and MORE! * ******************************************************************** -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: [email protected] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
