On Thu, 27 Mar 2003, Priscilla Oppenheimer wrote: > > > You are not supposed to use more than 3 repeaters... > > > > Now here is a question. Why couldn't you use actual wireless > > bridge > > units? > > Then you would be limited by the rule that you shouldn't have more than 7 > bridges.
Ok, that is my fault. In the haste of trying to get out the door I typed to fast and didn't chose my words carefully. I meant an actually wireless router and not a bridge sorry. See below for more info on those. > > But if you > > use the smarts of the box and use its routing capabilities > > Does it really do routing?? I'm not to sure about the Cisco wireless product line. But I know the Lucent Orinoco Outdoor Routers are actual routers. I have a set that was up between two offices and I had an ip block over the p2p link and then an IP block on the other office side of it. It was the gateway for the entire wired network over there. So yes there are wireless vendors that have routing abilities. I got to thinking about it and the TTL issue can be avoided by using a GRE or IPSec tunnel over the series of AP's so that the TTLs aren't decremented. :) > > have to have units with two cards and two antennas pointing in > > opposite directions to accomplish this. It's just like > > building a > > Microwave relay network.... > > Hmm. I don't know much about the PHY layer here. But that may be where the > issues are.... Good question. The only issue I can think of would be interferance from the other transmitter if they were in a straight line. So this can be avoided by simply placing them on the lowest power required and then by placing them far enough apart linearly that they can only see the signal from their partner down the line. Another thing that might help is to place the antennas at two different elevations on the tower. Or more easily just place a large sheet of copper between the two to absorb the signal and prevent it from reaching the other antenna from behind. And for those concerned about latency...What's the difference between that and using an INMARSAT terminal or any other satellite system for that matter? They have over .5sec delays in most cases. Granted some systems like DirecPC run a custom TCP/IP stack to minimize this, others like INMARSAT do not. Andrew --- http://www.andrewsworld.net/ ICQ: 2895251 Cisco Certified Network Associate "Learn from the mistakes of others. You won't live long enough to make all of them yourself." Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=66329&t=66270 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
