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bridging the right way

Discussion in 'Networking Issues' started by whosmatt, Oct 25, 2005.

  1. whosmatt

    whosmatt Guest

    forgive me if this question is redundant to other posts, but i haven't seen anything specific yet..

    what i want to do is bridge 2 buildings that are a few hundred feet apart.

    building A has a dsl connection and a WRT54G that provides wireless access to clients inside the building.

    i plan to purchase 2 wet11 bridges and a wap11. 1 wet11 connects to the WRT54G via ethernet and has a directional antenna pointed at building B. the other wet11 connects via ethernet to the wap11 in building B and has a directional antenna pointed at building A.

    the wap11 in building B provides a separate wireless network that is transparently bridged to the WRT54G for internet access.

    is any of this hardware redundant? sorry if these questions are covered elsewhere, but i've never attempted anything like this before and i don't want to buy hardware that i don't need.

    thanks,

    matt
     
  2. howardp6

    howardp6 Network Guru Member

    I would use WAP54G instead of the WAP11 and the WET11. Use the first WAP54G as an access point and the other WAP54G in bridge mode to connect to the WRT54G in building A. Youc an use a WRT54G connected to the WAP54G in building B as an access point. Are you using the WAP11 and the WET11 because they are less expensive? I do not recommend eliminating putting the WAP54G in repeater mode, but it can be done to eliminate having a third device.
     
  3. whosmatt

    whosmatt Guest

    so you're saying i should get 2 wap54g's for bridging and another WRT54G as the second access point? i'm a little confused.

    either way, it seems like the price differences are negligible. my main concern is reliability and that the solution be easy to hide (aesthetically pleasing)

    also, any antenna recommendations? ideally i'm looking for something directional, small, and easy to mount indoors (at the top of a window frame, for example.)

    thanks,
    matt
     
  4. techmanblues

    techmanblues Network Guru Member

    Directional antenna? By definition, a directional antenna is one that focuses the transmission towards one direction as opposed to an omnidirectional antenna. Therefore, a directional antenna is one that has a parabolic shape or the home-made potato chip can. I have not seen a directional antenna made by Linksys. In fact, I am looking for one myself. My friend lives across the street and he and I want to play network games. Right now, he has to pysically bring his computer over to my house.
     
  5. pcastleberg

    pcastleberg Network Guru Member

    Directional Antenna's

    techmanblues You can purchase after market directional antenna's for Linksys routers WAPs and Bridges. They are fairly common and relatively affordable unless you need a big boost in dBi.

    Here is just one website (there are many others that you may find cheaper options at) that carries a variety, you just need to make sure you get the right cable/pigtail combo that will work with your linksys equipment. If you call any of the antenna companies your the sale rep will be glad to help you.



    Sample 8 dBi gain directional antenna

    Wireless networks list of Linksys specific antenna kits

    Again there are alot of other websites that sell aftermarket antennas so shop around, this is just the only one I have book marked on my laptop. Go to google and search for Linksys Antenna's. You will get links to their standard rubber duckie antennas but you will also get links to other websites sellling antennas for linksys equipment.

    PC
     
  6. pcastleberg

    pcastleberg Network Guru Member

    Whosmatt,

    I would be interested in his answer as well. I did a bridge between to warehouses a couple of years ago with two WAP11 access points and uses 2 aftermarket pringles can style directional Yagi antennas. It worked good even though we only got about 3-5 Mbps throughput. (if you use a WAP as a bridge it halves the bandwidth).

    But I think now there are better products from linksys for this and you can get much better bandwidth.

    I currently have a location where I will be getting DSL and I need to hit two different warehouses each about 1/4 mile away. I am wondering if I buy 1 WAP (54G) and connect two directional antennas (one to each of the antenna connections) and then buy a bridge for each warehouse if that would work. 1 of the directional antenna's would be aimed at one warehouse and one at the second. Has anyone tried something like this or would I be better off buying a omni directional antenna? I am trying to keep costs down and I don't want to broadcast our network signal all over because I want it to be as secure as possible.

    Has anyone done anything like this? What equipment do you reccomend? I think the answer would help Matt and I.

    Thanks,

    PC
     
  7. howardp6

    howardp6 Network Guru Member

    If you do not want the throughput lossed then get a WET54G or a WET54GS5, thye do not use WDS so there is no throughput losses. They are a bit expnsive.
     
  8. HORSEMEN

    HORSEMEN Network Guru Member

    I’m wanting to do something similar. Form what I have studied, seams to me that the most stable system would be some thing like this.

    House - WRT54G(ver. 1-4) or a WRT54GL hooked to my DW6000 sat. Internet.
    WET54G Ethernet cabled to the WRT54G, with a directional antenna outside

    Shop - WAP54G Eathernet cabled to a, WET54G With a directional antenna outside

    What do you guys think?
     
  9. bluebox

    bluebox Network Guru Member

    If you are just looking to bridge for Internet access, check out bluebox at http://www.linksysco.com

    As far as antennas for ptp links go, nothing beats a high-gain highly-directional antenna using a parobolic dish. I'm a huge fan of limiting the beamwidth as much as you can - it keeps your link more secure, gives you great signal strength, and also keeps you from creating interferance for others. Win, win, win.
     
  10. HORSEMEN

    HORSEMEN Network Guru Member

    I agree. Where I am at, the road is 1/4 mile away and my nearest nabor is 1 mile. I have 2 CISCO YAGI 1949 13.5 dBi directionals.
    Now I’m weighting for my bridges.
     
  11. Kulai

    Kulai Network Guru Member

    I used a pair of WAP54G before. 1 as AP and the other as AP Client, for a distance of about 2km. It didn't work out well. The WAP54G were V3. I have a problem with these WAP54G V3 that it does not allow me to turn on security under Client mode. Maybe it was my hardware problem. Anyway, I have long LMR600 antenna cable, about 25m at both ends so I lost a lot of signal. The AP end was using a 15 dBi omni and the client end was using a 20 dBi yagi. I am now working on reducing the antenna cable length by putting the device near the antenna. Am looking for a pair of enclosures now.

    The WAP54G worked well for less than 1km, without security of course as my WAP54G did not allow me to turn on security at client mode. One of my sites was about 0.7km (I think) and the antenna length was about 7m. Net access over this connection without problem with no noticeable lost in connection speed.

    If you are thinking of 3rd party firmware then I would suggest you forget about WAP54G. The ain't much 3rd party firmware for WAP. Stay with WRT54G as the 3rd party firmware allow you to turn it as AP and a lot more features and parameters for you to play and tweak. I am replacing my WAP54G with WRT54G.
     
  12. HORSEMEN

    HORSEMEN Network Guru Member

    Im goinging with WET54Gs to make the bridge, With a WAP54G to serve as my access point in my shop.
     

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