Bridging Connections + Wireless restrictions

R

Rhino

Senior Member
Joined
Feb 27, 2004
Messages
767
Reaction score
10
Location
Somewhere in the Med.
Is there any way to bridge 2x 512k connections to form a 1Mbit?

And apart from "road crossing" are there any major restriction for a small wireless network?

Save a horney friend........

Durban Mal Park(36) 53% sig 128k
 
Its possible but I dont think you can then get 100KB/sec without any kind of threading. Think of ISDN taking the two 64k channels to make 128kbps. Similar concept.
Rather wait a few months for the 3.5GHz product..

Restrictions-yes. Mainly range. Depending on your antenna etc you should get up to 500m outdoors if lucky.

Plus, if you have say, 54Mbps you will only get about 25Mbps due to overhead. Also, if you have 5 users on a 54Mbps WLAN, each user will get about 4Mbps if all are online due to overhead plus AP traffic and assuming perfect signal conditions. Spread them out and it gets much worse.
 
GF: The whole network will be running at 108Mbps. But using a 28dbi omni, and 2 Grid dish, or diectional dish Shouldnt I get at least 1.5KM on a bad day? Using a standard router, as far as I know I can throttle users, does that sound correct?

Save a horney friend........

Durban Mal Park(36) 53% sig 128k
 
That 108 Mbps is rubbish. Its nowhere near that (I may be wrong but you wont even get 20Mbps shared at large distance).
I dont know about the throttling.. but throttling LAN users is pretty easy.

you might get connection at 1.5km but your throughput will suffer. I have no firsthand experience on setting up a wide area WLAN but I am looking into it at the moment. I guess with decent antennas and at least 802.11g you could puch it safely to 1km in flat area. With buildings around its a hassle. 28dBi omni for the AP should suffice.

Have you got all the necessary equipment yet? If so, what was the damage?

btw: how many hosts do you want in your WLAN?
 
Ive tested the Dlink 108 range, and I must say, I can get pretty damm close with super G enabled. I sell all the dlink stuff, so I have messed around with it quite a bit. You looking @ R1250+Vat for a 4 port wireless router, then R625+vat for the 108 PCI nic. A really good omni R770+vat and a decent dish ant R550+vat then the jumbper cable from nic/ap to ant. is R140+vat and a 3m extension will set u back about R240+vat. I have a building site in richards bay on 108, they connecting from 3km away with no probs, untill a bulldozer blocks the signal. To increase Throughput you can run the cards and ap's in superG mode, but just push the max speed down to 54 therby increasing overall power.

Save a horney friend........

Durban Mal Park(36) 53% sig 128k
 
Rhino, I also use Dlink equipment all over the place - Best "bang for buck" company to be
found anywhere.

<font color="blue">Bay of Plenty: </font id="blue"><font size="1"><font color="black"> Signal 46% - SNL 17 - ber 71%
</font id="size1"></font id="black">
 
It is very very popular @ the moment especially with its new limited lifetime warranty. Its also real easy to set up and maintain.

Save a horney friend........

Durban Mal Park(36) 53% sig 128k
 
In a specific manufacturing environment we have, where about 1 out of
every 5 Cisco switches for some reason failed, not a single Dlink
switch has ever failed.
It was this that convinced me to start using their stuff!


<font color="blue">Bay of Plenty: </font id="blue"><font size="1"><font color="black"> Signal 46% - SNL 17 - ber 71%
</font id="size1"></font id="black">
 
moral of the story.. its pretty expensive to set up a decent WLAN. 3km WLAN would be great but Im a student and convincing people to pay R600+ for an access card and more for an antenna is a hassle.

From partical experience, whats the throughput like on SuperG? for 108Mbps does it even go over 54Mbps? Also whats the range at 108Mbps.

Im still a bit in the dark about the need for a wireless router. Why would you need it? Dont you just bridge the WLAN onto a wired LAN with the AP?
 
Its easier to just plug the modem into the wireless router, config router to do dialup + authentication, The router has a built in AP so you caould just put the ant straight onto it. No need for ap or anything else, ap is optional extra. cards connect direct to router.

My idea is more to set up a wan for internet use, ie. take 2x 512 connections. put onto wireless router, offer 6ppl the option of a wireless 27/4 internet connection. They must buy the card themselves though.

I dont have the figures at home with me, il post them on monday. Range on standard buil on ant is 200m indoor 400m outdoor, but just stick a little 8Dbi patch on it to extend it 40%.

Save a horney friend........

Durban Mal Park(36) 53% sig 128k
 
DBNNET: As a rule they are very reliable, and when there is a fault, we try and give the customer a new unit straight away, ie. no swopout period. What size switches you mainly use?

Save a horney friend........

Durban Mal Park(36) 53% sig 128k
 
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">54Mbps you will only get about 25Mbps due to overhead.<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">
50% overhead?? I think not, more a case of the AP manufacturers just lie about the speeds. You get 54Mb if the AP's are connected by a piece of coax, not air etc.

108Mb? Where do you get 108Mb wireless gear?

And you should be able to do alot better than 500m depending on the output power of your cards, decent ones can do up to 2km with the right antena (people have even goten 20, 30km with them).

- Colin Alston
colin at alston dot za dot org

"Getting traffic shaping right is easy and can be summed up in one word: Dont." -- George Barnett
 
Karnaugh: The Dlink wireless range has a full spectrum 108 range. Regarding distance, Its in a VERY built up are, with numerous other transcievers in the area. Please let me know if u interested in any of the dlink items, and I will get you spec and price. You can go to www.dlink.com for more info

Save a horney friend........

Durban Mal Park(36) 53% sig 128k
 
AFAIK - part of their MAX range device allows flooding traffic accross all 11 channels - not to friendly from a sharing point of view ;-)



************************************************************
The views expressed on this site are my own and NOT those of my employer.
 
Rhino, all our new layer 2 stuff (mostly 24 port) is DLink.
Also our 802.11b network is mostly based on the DWL-900AP+
(we have +20 access points)
We still will use Cisco for the backbone layer 3 stuff though.

<font color="blue">Bay of Plenty: </font id="blue"><font size="1"><font color="black"> Signal 46% - SNL 17 - ber 71%
</font id="size1"></font id="black">
 
I have a strange request.. do you perhaps have or know of any faulty DWL-900AP+'s. I need one as a reference design for a project im working on. If you have one lying around, could you check if it uses a MAX2820 IC somewhere on the mini-PCI board inside the AP. Otherwise, put me in contact with D-Link etc so I can maybe pickup one of the faulty ones or old broken ones. I only need the circuit layout etc and it doesnt need to work at all.
 
Greedy,

If you still need this: Call Dlink's PTA office (012 6652165) and ask for Attie.
He's a very helpful guy, and am sure he will be able to assist you.

<font color="blue">Bay of Plenty: </font id="blue"><font size="1"><font color="black"> Signal 46% - SNL 17 - ber 71%
</font id="size1"></font id="black">
 
You must log in or register to reply here.
Back
Top
Sign up to the MyBroadband newsletter
X