wireless bridges question

[skarosi]

Hi all,
first of all, i should tell you that i am new to all these wireless things, i just have to do an assignment and i am looking about them.
now, with this on the side, my question.
i have 2 buildings to connect wirelessly, i am going to need one bridge on each building, that much i know. will i need an antenna as well? and if i do need one, why? since i have been looking around and what i understood is that bridges can comunicate Peer2Peer for up to 40 miles or so.
also, someone told me that the bridge can not use cambles for more than 10meters (something like 30 feet), from the pc to the bridge or from the bridge to the antena. is that true? and if yes, how can i connect my LAN that exist on the rist floor with the bridge/antenna that is on the roof of the building more than 10 meters up?

if you could give me some webpages as well to look at and add them on the bibliography that would b great, but i need to understand all these things first.

Thank you all,
Ilias

 

[PeterHurst]

There is come truth in what you have been told. The length of cable from the bridge to the antenna is limited. How long depends on the manufacturer, Enterasys did 75ft cables, 50ft and 20ft(?) cables - the Roamabout Point to point Kits came with 50ft.

The limitation is the quality of the signal from the antenna - the longer the cable run the more loss to the radio signal.

I would recommend having the shortest cables practicable and running a CAT5 cable to a convenient location for the bridge. Generally once fitted you don't need to touch them and can check on them via a management console.

As for distance, I've personally gone over 1.5Km with line of sight Yagi aerials on the Enterasys, I have seen the Cisco hyper-directional aerials say they can go a lot further, however the general limitation of all this stuff is line of sight... if you have obstacles in the way you can forget a wireless bridge.

 

[LloydSev]

Basically what is being said is this..


You can run an Ethernet cable for quite a ways (well over 10M), but the antenna cable should be as short as possible.

Computer/Network Technician
CCNA

 

[skarosi]

well, thanks for your help, but i have already sumbited the assignment any way
LloydSev, do u mean 10Miles, or 10 meters?
cos i am sure u can use up to 100 meters of CAT5 cable with no problem.
anyway, thanks.