Hi Matt, Actually, our testing and real-world experience shows that convergence is faster in bridged RSTP network than it is in a routed OSPF network.
We ran OSPF on our wireless network, and still do on our wired network. With default settings of a hello interval of 10 seconds and a dead router interval of 40 seconds, recovery from an outage and need to re-route, as you would expect, takes just over 40 seconds. We run with quicker settings on our network: a hello interval of 2 and a dead router interval of 12. As would be expected, recovery from an outage and need to re-route takes just over 12 seconds. Contrast that with our RSTP bridged network, where we "broke" a backhaul and forced traffic to "route" around the outage. The new route was 5 tower hops longer than the primary route, and it took about 6 seconds for traffic to move around the outage. I haven't done tests using STP, only RSTP, and my understanding is that STP is significantly slower. In that case, you may be right. Also, if you are running a routing protocol other than OSPF, especially something that has fast-reroute capabilities, you very well might do better with it than with RSTP. But in Mikrotik, OSPF and RSTP are your main options when discussing dynamic routing versus dynamic bridging, and RSTP really does converge quicker. Dave 989-837-3790 x 151 989-837-3780 fax [EMAIL PROTECTED] www.mercury.net 129 Ashman St, Midland, MI 48640 ----- Original Message ----- From: "Matt Liotta" <[EMAIL PROTECTED]> To: "WISPA General List" <wireless@wispa.org> Sent: Tuesday, June 13, 2006 8:25 AM Subject: Re: [WISPA] looking for a device > Paul Hendry wrote: > > >We too have been looking at moving from routed to a switched Mikrotik for > >the core network but the unknown quantity seems to be if there are any > >latency or speed issues related to the move. A "true" switched network is > >faster than a routed network as the switching is done at a hardware level > >but in Mikrotik I believe both switching and routed is done in software. > >What have you seen? > > > > > > > Faster in what way? Certainly, a routed network is going to beat a > switched network in terms of covergence speed. > > -Matt > -- > 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/
