Also remember the 1500 byte MTU issue. Over a Layer2 PTP its usually not an issue, but it is over a standard transit connection. (customer and Internet needs to see 1500 bytes, but an ISP's tunnel causes packet size to exceed 1500 MTU. Customer end devices have the option of lowering their MTU to deal with it, but an ISP in the middle does not have that option, as the packets comming from end users are 1500 byte already. Fragmentation is not allowed on many network router hops.
We use Cipe tunnels to solve that. To split the full size packets before it enters the tunnel, so tunnel stays at 1500MTU or less, required by the transit provider.. How do you do it with Mikrotik ? Tom DeReggi RapidDSL & Wireless, Inc IntAirNet- Fixed Wireless Broadband ----- Original Message ----- From: "Dennis Burgess" <[email protected]> To: <[email protected]>; "WISPA General List" <[email protected]> Sent: Friday, April 24, 2009 7:06 PM Subject: Re: [WISPA] Interesting BGP Redundancy Opton for FREE > We do this quite a bit with smaller wisps, place a PowerRouter at a NOC, > and send IPs and data to them via cable/dsl whatever. All of their > publics work regardless of the connections and we also allow them to use > multiple connections too. we are rolling out a number of shared systems > like that around the US. I will have to see what I can do as far as > costs to you. > > Scott Carullo wrote: >> Ok... I have multiple peers, bgp, etc... Normal stuff. >> >> I am looking for someone who has MT, has bgp peers but maybe would like >> to >> have a little more redundancy just in case. For example our main router >> with both peers is in the same facility so I still currently have some >> single point of failure issues I'd like to resolve. Bottom line - a >> plane >> crashes into my facility and I'm off the air for a while. >> >> If you are in this same boat, I have a solution I believe, that won't >> cost >> either of us hardly anything. We get a cable connection (or whatever >> cheap >> business class connection) that is say 20MB down and 2MB up (for example) >> at a remote site in another city where our network spans. We create a >> tunnel between our routers and if either side main fiber or router goes >> down traffic can be re-routed temporarily via this connection and the >> down-speed would be pulling from the others main fiber feeds so it should >> stil be fast enough to make a lot of the pain go away - better than being >> down any way. The BGP session between sites would also allow incoming >> traffic for email / web etc to operate as well - which is the only thing >> this solution adds to a non-BGP type backup circuit. >> >> Any way, this is not a replacement for having multiple bgp peers with >> real >> connections, don't take it that way. This is a low cost way to help each >> other out in worst case scenario for whoever may be in this same >> position. >> I'm willing to explore options any way if someone else is interested. >> Send >> me an email, we can discuss further. >> >> Scott Carullo >> Brevard Wireless >> 321-205-1100 x102 >> >> >> >> -------------------------------------------------------------------------------- >> 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/ >> > > > -------------------------------------------------------------------------------- > 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/ -------------------------------------------------------------------------------- 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/
