Relationship Between Link Length And Data Rate?

Aug 5, 2011

I have something I assumed but I am not sure if this wrong or not. I assume that every say 1 meter, I can send say 1 bits, so if I have 10 meters of link length, I can send 10 bits of data on that link. Do you have any argument to strongly support this assumption, preferrably a reference.

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I've spent parts of the past five days buying and exchanging several WAP4410N units because I was not able to achieve anything close to a 300Mbps data rate. I also tried various wireless-n network cards which were known to be configured correctly for 300Mbps speeds with no luck.
 
The highest speed I was able to achieve was 130Mbps, which is an indication that channel bonding is not in effect.
 
Then I came across another post in the forums:
 
WAP4410N does not exceed 130Mbps in N mode at close range.
 
where the OP mentions recently upgrading to firmware 2.0.4.2, though not treating that as the cause of his problems.
 
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So, right now, I downgraded to firmware 2.0.3.3 so I can get the higher data rate, though there are other quirks to deal with.
 
Furthermore, when I do a web search of reviews, I can see that the inability to achieve the 300Mbps data rate is a huge source of complaints.

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I have just bought an E3000 router when my old router died last week.  I am having two problems:
 
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2.  I cannot see everything on the network.
 
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The URL field in the web access log has a length of 70 characters.  Is there any way to increase is[INFO] Mon Jun 13 21:30:30 2011 Website1234567890012345678900123456789001234567890012345678900123456789001234567890 accessed from 192.168.xx.xx

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Jan 3, 2011

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Here we got Nintendo's support for some D-Link routers[url]...

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I have an old computer (Dell gx280) that has a external usb 2.0 hard drive connected to it. I was trying to copy the files over a gigabit network connection to another computer and it was only transferring at approx. 2.5 megabytes a second. This was only using a small fraction of the gigabit network card in both the source and destination computer. I saw the CPU was maxed out on the source PC b/c of an application. Once I quit that application the CPU usage went back to essentially nothing. The copy job then jumped up to 14 megabytes a second and was using 30-35% of the gigabit connection.

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Then I had to setup a router for a friend, and recommended the DIR-615.

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So this "opened" up the 300mb speed - however only for 5 mins, then it falls down to 150mb.

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It's ax Hx firmware, FW: 8.04

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I got a new router from the dealer, same issue. Then a friend of mine lent me an ancient dir-615, and interestingly enough this had the same configuration option of "Transmission rate" in the wireless settings page! Just like the dir-655. and also connects at 300mb...

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i have a 4Mbps DSL internet connection with 3 PCs connected through a router. 2 are connected wirelessly and the other is wired via an ethernet cable. i noticed that when downloading a file from an international server, the transfer rate on the wireless PCs is 2-3 times slower than on the wired PC. the wireless PC would get about 150-200kb/s, whereas the wired PC can max out to 450kb/s on a single download. however when i download from a local or nearby server instead, the transfer rate on the wireless and wired PCs are the same and can both reach up to 450kb/s per download. i don't understand why the wireless connection is slower to international servers compared to the wired PC.my wireless signal is at 54Mbps with "excellent" strength. i also tested the ping results from both the wireless and wired PCs to international servers and they are pretty much the same.

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Feb 16, 2013

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I have bought tp-link wdr-4900 for several days and encounter the following problems

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Feb 9, 2011

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Nov 20, 2012

My camera uses Lots of data without anyone viewing the camera.I have it connected to a mobile data limited subscription with 2Gb of transfer each month. When traffic goes over it will limit bandwidth to 64 kbit/s.

After I connected the camera my data usage rise very high and just in a day or two the 2Gb limit was reached.The speed was then decreased to 64 kbit/s. And the next 3 weeks until my limit was reset the total data usage was up to 4Gb.That means that in 3 weeks 2Gb data was sent from the camera in only 64 kbit/s.How could this be?I have motion detection on that will email me images, that gives me some false positives some days with sun and shadows. But that should add up to a few Mb as maximum for a month.

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When i tried to play back my video this error message appear:

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May 7, 2013

Region : India
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Firmware Version :
ISP : Airtel

Just bought new 3g data card from Airtel. Modem supplied is ZTE AF190U. Its not recognised by the 3GRouter.

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Mar 13, 2013

Region : India
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Hardware Version : V1
Firmware Version :
ISP : BSNL

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May 3, 2013

Region : UnitedKingdom
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Hardware Version : V5
Firmware Version : 22.05.2012
ISP :

I have a TD-W8951ND v5 on the latest firmware.

I recently broke my broadband data cap which surprised me as I had not been using the internet much.

I only have tablet which I switched off having first checked the router to make sure there were no other wireless connections and adding MAC address filtering to be sure no one else was stealing my bandwidth. With just my router connected to the ISP, my ISP has recorded 170MB of downloaded data in 3.5 hours. Switching off the router stops the traffic being recorded (as you would expect), but when switched back on the large data transfers start up again.

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Apr 3, 2013

Region : Ukraine
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Is it possible to extend the functionality of USB in future firmware for data transfer? More detail about the problem [URL]can at least in beta partially implemented increase data transfer USB?I bought this router, and as all users lose .... With the Internet, download files faster than with external screw via USB.

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Feb 5, 2013

We want to use a Cisco 861 Ethernet router to link our LAN's data and voice segments together (each on separate switches). Our switches are not Layer3 so routing over them is not an option. We only use the default VLAN1 on both switches.There is a data segment 192.168.1.0/24 and a voice segment 192.168.150.0/24, each with it's own internet/WAN access (internet for the data lan and SIP provider for the voice lan).

Diagram:

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