Edimax router automatically limits bandwidth after a second computer connects

[Bog26]

Hi,

I own a wireless router... Edimax br-6204wg. Latest firmware installed (1.61)

Short description

• Power UP the device
• The router sends the password and user to my internet provider and receives an IP. Now i'm connected to the internet (PPPoE). It remains connected until i shutdown the router or reset it. So... it is set to be always connected.
• pc_1 connects to the router.
• pc_1 receives the ip 192.168.2.100.
• TEST the speed of my internet connection on pc_1. Result... something like 40 Mb/s download and 3 Mb/s upload
• pc_2 connects to the router
• pc_2 receives the ip 192.168.2.101.
• TEST the speed of my internet connection on pc_1 or pc_2. Result... something like 8 Mb/s download and 1.3 Mb/s upload

The limited speed remains like this until i restart the router. The be able to use the full speed i have to be sure that no more than 1 computer was connected EVER to the router. It doesn't matter if i disconnect pc_2 or pc_1 or if i connect more computers. The limits remain .

Any ideas why this happens?

[mudmanc4]

 I noticed what you have posted, the IP set is from a secondary subnet, is this your doing ? I haven't seen a default router start with two domains like that. Who knows what else is set up like this. Did you get the router new, or from someone else ?

 Generally when you see this type of a config, the system has been set up for several systems connected, and this for security reasons, you could be looking at  QOS setting that "equalizes " available bandwidth between machines.

 

[Bog26]

This router was new and DEFAULT the ips start from 192.168.2.100

I know what every setting does for my router and nothing should make him act like this

QOS is disabled default and i know it is disabled now...

I'm using this router with 2 computers. But... most of the time only one is connected. Hm... but it doesn't matter. Once a second IP is "released" by the router the speed is limited.

[mudmanc4]

 Ok so i did a little searching and found that the Edimax router is as you said, the default IP does use "2" , or the secondary subnet which surprised me for whatever reason, Iv'e sen it in a belken product before, but not often  other then that, generally it's used to keep  machines separated for server related set ups.

 btw , I don't mean any disrespect when asking questions and or making comments.  

  The term that is used when the router gives an IP to a device is "leased" To release is where there is a request for the router to clrear IP on that machine, and lease a new one to insure there isn't a IP conflict between devices.

  Are you connecting to the router via cat5 / RJ-45 , or wireless ? If so , or not, on which machine.

 Can you start a shell and type "ipconfig /all " , while the machines are connected and paste the output here ? Other then the WAN IP.

 Could there be a cable mis match if in fact the machines are connecting wired ?

 You can test this factor by going to this ndt test server
 

 

[mudmanc4]

 Another thing, have you thought of setting up the machine that is primarily connected as static ?   

 You could use the subnet "192.168.1.XXX " , this way, any other machine that connect will get the same priority  ( if you set it up that way ) on either wireless , or wired. As many machines as happen to allow will still be able to connect wirelessly on a separate subnet , in this case 192.168.2.XXX.

 

[Bog26]

No offense taken for any of your comments or questions.

In fact... i have already set up 2 IP addresses to be statically allocated taking into account the MAC address.

I'm using 2 machines: 1 is a Laptop and the other is a Desktop.
The Desktop is connected through a wire.
The Laptop is the machine i'm using the most. I'm using the wired connection in a part of my house where the Signal from my router is low and the wireless if i prefer another spot. So... imagine a very possible situation: i'm browsing the net on my laptop using the wire (wireless card disabled) and i want to change my location. I unplug the cable and i press the "enable/disable wireless" button. Now i'm connected through the wireless card

The two ips in this picture >> http://img294.imageshack.us/my.php?image=11072009203959.jpg << are set to the 2 network cards on my laptop.
So... if the desktop connects he will receive the IP 192.168.2.100.
If the laptop connects the ip will be *.*.*.101 or *.*.*.102

The ipconfig doesn't show any relevant information...

Code:

Microsoft Windows [Version 6.1.7600]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

C:\Users\Bogdan>ipconfig /all

Windows IP Configuration

   Host Name . . . . . . . . . . . . : Bogdan-Laptop
   Primary Dns Suffix  . . . . . . . :
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection 3:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : TeamViewer VPN Adapter
   Physical Address. . . . . . . . . : 00-FF-E2-51-36-10
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wireless Network Connection:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Atheros AR5007EG Wireless Network Adapter

   Physical Address. . . . . . . . . : 00-1F-3A-0D-B7-5B
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   IPv4 Address. . . . . . . . . . . : 192.168.2.101(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : 7 noiembrie 2009 20:35:14
   Lease Expires . . . . . . . . . . : 19 ianuarie 2038 05:14:07
   Default Gateway . . . . . . . . . : 192.168.2.1
   DHCP Server . . . . . . . . . . . : 192.168.2.1
   DNS Servers . . . . . . . . . . . : 192.168.2.1
   NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Local Area Connection:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Broadcom NetLink (TM) Fast Ethernet
   Physical Address. . . . . . . . . : 00-1B-38-C9-3E-FC
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{24DB9530-9095-4ABE-9412-305D044423EF}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Teredo Tunneling Pseudo-Interface:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{1B6DF245-583F-42C8-AECC-BC89908DF1AC}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{15BB25E7-1F9F-4FBE-923E-986A5F197C84}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #3
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

C:\Users\Bogdan>

Hm... i'm pretty sure that this is not a windows problem or a faulty setting from the software on one of the PCs. I have Ubuntu (linux) on my Desktop and the speed is limited as well...
About the wires... i'm pretty sure that they have a correct configuration. And... if Not... the problem should not persist if all the cables are unplugged and i'm connected only through one network card... a wireless one

I think i lost hope a long time ago. I'm pretty sure the router is stupid and not me.

By posting here I especially wanted to know if this is a Normal behavior for a router: to automatically limit the speed if more than one device is connected. This is not the case in witch all N computers receive data at the same time and the speed for every computer is equal to (maxSpeedSetByISP / N)... . If you didn't know that this is normal and you don't think that over 90% of the routers out there act like mine... maybe i will purchase a new one. Oh... but not a Edimax router. I think it is a firmware problem

[mudmanc4]

 Well I'm of the type where going out to get something other then what I have is the last resort, although I can understand everyone is not like this.  Some people call it ocd, I call it learning    I don't allow inanimate objects to get the best of me, well, most of the time. If your serious about getting a new router, and enjoy setting up your network for security, and usability, my suggestion would be the Linksys WRT54G or N (whatever) , or other DD-WRT capable device. I suggest this due to the fact you are running a Linux distro, so this to me means you are well capable of configuring something more then just a router to get online. Even if your relatively new to linux, you can still use the features in DD-WRT. What you have already posted shows your more then capable.

 I dunno if your familiar w/ DD-WRT ?
 
 As for knowing exactly the the problem is, this can be done in steps and deducting what has been ruled out.

 What is normal for one router config, may not reflect what is "normal " for another, so this will never be a constant.

 Maybe I missed it in your code brackets, but I didn't see any proof that there is a static Ip set up. And that the DHCP server is still running on the wireless side which is what you want.

 Did you run the test at the ndt server site ?

 Will you upload the config and post it ? Maybe I can see something in there that will tell me whats going on.

[Bog26]

I configured the IPs statically from the router , not from my PC (look at the image posted --> http://img294.imageshack.us/my.php?image=11072009203959.jpg ). I need the computer to be able to connect at work and in public places, so DHCP is needed

Hm... regarding the learning part. I also prefer to find solutions and changing the device is not a solution. Believe me... i have tried all the possibilities and nothing. Same behavior... So... when i will have money i will buy a router that supports custom firmware (most probably based on UNIX). This is what you where talking about . I have done my homework a long time ago ;))

So... ARE YOU sure that other routers don't have the above described issues ?

[mudmanc4]

 Ok I see what you did. I have used this feature before. just didn't catch it on the first one. My bad.

 As far as me knowing other routers don't have this problem, it all depends on the config. I'm sitting here wondering why this would be, maybe it's a cable wiring mis match ( there are two ways to wire the terminations , even from different suppiers) or something set within the adapter itself, are you able to test on the ndt server at all ? This might clear up a few things real fast, ten again, maybe show nothing.

[Bog26]

I didn't post the result of the test you proposed because nothing relevant showed up. I have redone the test just now. Here are the results >>

Code:

TCP/Web100 Network Diagnostic Tool v5.5.4b
click START to begin

** Starting test 1 of 1 **
Connected to: ndt.anl.gov  --  Using IPv4 address
Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done
checking for firewalls . . . . . . . . . . . . . . . . . . .  Done
running 10s outbound test (client-to-server [C2S]) . . . . . 350.0kB/s
running 10s inbound test (server-to-client [S2C]) . . . . . . 2.46Mb/s
Your PC is connected to a Cable/DSL modem

click START to re-test

Anyway... thank you

[mudmanc4]

 That isn't what i was looking for, there is a very large amount of output this test gives, after the test finished, please click the  "statistics " tab under the java window, this will open a new windows with information regarding your connection, there is also "more details " tab that shows the settings of the adapter , and tcp output. This information can be used to "track down" issues.

[Bog26]

Hm...

Before restarting the router More Details Code: WEB100 Kernel Variables: Client: localhost/127.0.0.1 CurMSS: 1440 X_Rcvbuf: 262142 X_Sndbuf: 262142 AckPktsIn: 1130 AckPktsOut: 0 BytesRetrans: 48960 CongAvoid: 0 CongestionOverCount: 0 CongestionSignals: 3 CountRTT: 887 CurCwnd: 53280 CurRTO: 412 CurRwinRcvd: 262080 CurRwinSent: 5888 CurSsthresh: 122400 DSACKDups: 0 DataBytesIn: 0 DataBytesOut: 4113156 DataPktsIn: 0 DataPktsOut: 2856 DupAcksIn: 212 ECNEnabled: 0 FastRetran: 3 MaxCwnd: 324000 MaxMSS: 1440 MaxRTO: 532 MaxRTT: 352 MaxRwinRcvd: 262080 MaxRwinSent: 5888 MaxSsthresh: 226080 MinMSS: 1440 MinRTO: 384 MinRTT: 160 MinRwinRcvd: 17280 MinRwinSent: 5840 NagleEnabled: 1 OtherReductions: 1 PktsIn: 1130 PktsOut: 2856 PktsRetrans: 34 RcvWinScale: 7 SACKEnabled: 3 SACKsRcvd: 241 SendStall: 0 SlowStart: 0 SampleRTT: 176 SmoothedRTT: 176 SndWinScale: 2 SndLimTimeRwin: 364801 SndLimTimeCwnd: 5227778 SndLimTimeSender: 5024197 SndLimTransRwin: 29 SndLimTransCwnd: 277 SndLimTransSender: 306 SndLimBytesRwin: 223780 SndLimBytesCwnd: 2764280 SndLimBytesSender: 1125096 SubsequentTimeouts: 0 SumRTT: 176400 Timeouts: 0 TimestampsEnabled: 0 WinScaleRcvd: 2 WinScaleSent: 7 DupAcksOut: 0 StartTimeUsec: 728260 Duration: 10617558 c2sData: 5 c2sAck: 3 s2cData: 9 s2cAck: 9 half_duplex: 0 link: 0 congestion: 0 bad_cable: 0 mismatch: 0 spd: 3.10 bw: 1.70 loss: 0.001050420 avgrtt: 198.87 waitsec: 0.00 timesec: 10.00 order: 0.1876 rwintime: 0.0344 sendtime: 0.4732 cwndtime: 0.4924 rwin: 1.9995 swin: 2.0000 cwin: 2.4719 rttsec: 0.198873 Sndbuf: 262142 aspd: 0.00000 CWND-Limited: 142.46 minCWNDpeak: 2880 maxCWNDpeak: 321120 CWNDpeaks: 3 The theoretical network limit is 1.7 Mbps The NDT server has a 127.0 KByte buffer which limits the throughput to 10.05 Mbps Your PC/Workstation has a 255.0 KByte buffer which limits the throughput to 10.05 Mbps The network based flow control limits the throughput to 12.42 Mbps Client Data reports link is 'FastE', Client Acks report link is 'Ethernet' Server Data reports link is '10 Gig', Server Acks report link is '10 Gig' Statistics Code: WEB100 Enabled Statistics: Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done checking for firewalls . . . . . . . . . . . . . . . . . . .  Done running 10s outbound test (client-to-server [C2S]) . . . . . 1.30Mb/s running 10s inbound test (server-to-client [S2C]) . . . . . . 3.09Mb/s ------  Client System Details  ------ OS data: Name = Windows 7, Architecture = x86, Version = 6.1 Java data: Vendor = Sun Microsystems Inc., Version = 1.6.0_16 ------  Web100 Detailed Analysis  ------ 100 Mbps FastEthernet link found. Link set to Full Duplex mode No network congestion discovered. Good network cable(s) found Normal duplex operation found. Web100 reports the Round trip time = 198.87 msec; the Packet size = 1440 Bytes; and There were 34 packets retransmitted, 212 duplicate acks received, and 241 SACK blocks received The connection was idle 0 seconds (0%) of the time S2C throughput test: Packet queuing detected: 3.49% This connection is receiver limited 3.44% of the time.   Increasing the the client's receive buffer (255.0 KB) will improve performance This connection is sender limited 47.32% of the time.   Increasing the NDT server's send buffer (127.0 KB) will improve performance This connection is network limited 49.24% of the time. Web100 reports TCP negotiated the optional Performance Settings to: RFC 2018 Selective Acknowledgment: ON RFC 896 Nagle Algorithm: ON RFC 3168 Explicit Congestion Notification: OFF RFC 1323 Time Stamping: OFF RFC 1323 Window Scaling: ON Server 'ndt.anl.gov' is probably behind a firewall. [Connection to the ephemeral port failed] Client is probably behind a firewall. [Connection to the ephemeral port failed] Information: Network Middlebox is modifying MSS variable Server IP addresses are preserved End-to-End Information: Network Address Translation (NAT) box is modifying the Client's IP address Server says [79.112.55.44] but Client says [192.168.2.101]

After restarting the router... More details Code: WEB100 Kernel Variables: Client: localhost/127.0.0.1 CurMSS: 1440 X_Rcvbuf: 262142 X_Sndbuf: 262142 AckPktsIn: 2684 AckPktsOut: 0 BytesRetrans: 1440 CongAvoid: 0 CongestionOverCount: 0 CongestionSignals: 1 CountRTT: 2557 CurCwnd: 56160 CurRTO: 416 CurRwinRcvd: 262080 CurRwinSent: 5888 CurSsthresh: 128160 DSACKDups: 0 DataBytesIn: 0 DataBytesOut: 8393964 DataPktsIn: 0 DataPktsOut: 5832 DupAcksIn: 126 ECNEnabled: 0 FastRetran: 1 MaxCwnd: 328320 MaxMSS: 1440 MaxRTO: 520 MaxRTT: 344 MaxRwinRcvd: 262080 MaxRwinSent: 5888 MaxSsthresh: 128160 MinMSS: 1440 MinRTO: 376 MinRTT: 156 MinRwinRcvd: 17280 MinRwinSent: 5840 NagleEnabled: 1 OtherReductions: 2 PktsIn: 2684 PktsOut: 5832 PktsRetrans: 1 RcvWinScale: 7 SACKEnabled: 3 SACKsRcvd: 98 SendStall: 0 SlowStart: 0 SampleRTT: 168 SmoothedRTT: 168 SndWinScale: 2 SndLimTimeRwin: 1568036 SndLimTimeCwnd: 2311442 SndLimTimeSender: 6940364 SndLimTransRwin: 342 SndLimTransCwnd: 88 SndLimTransSender: 430 SndLimBytesRwin: 2882500 SndLimBytesCwnd: 817120 SndLimBytesSender: 4694344 SubsequentTimeouts: 0 SumRTT: 481500 Timeouts: 0 TimestampsEnabled: 0 WinScaleRcvd: 2 WinScaleSent: 7 DupAcksOut: 0 StartTimeUsec: 505101 Duration: 10819900 c2sData: 5 c2sAck: 3 s2cData: 9 s2cAck: 9 half_duplex: 0 link: 0 congestion: 0 bad_cable: 0 mismatch: 0 spd: 6.21 bw: 4.46 loss: 0.000171468 avgrtt: 188.31 waitsec: 0.00 timesec: 10.00 order: 0.0469 rwintime: 0.1449 sendtime: 0.6414 cwndtime: 0.2136 rwin: 1.9995 swin: 2.0000 cwin: 2.5049 rttsec: 0.188307 Sndbuf: 262142 aspd: 0.00000 CWND-Limited: 142.84 minCWNDpeak: 2880 maxCWNDpeak: 328320 CWNDpeaks: 1 The theoretical network limit is 4.46 Mbps The NDT server has a 127.0 KByte buffer which limits the throughput to 10.62 Mbps Your PC/Workstation has a 255.0 KByte buffer which limits the throughput to 10.61 Mbps The network based flow control limits the throughput to 13.30 Mbps Client Data reports link is 'FastE', Client Acks report link is 'Ethernet' Server Data reports link is '10 Gig', Server Acks report link is '10 Gig' Statistics Code: WEB100 Enabled Statistics: Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done checking for firewalls . . . . . . . . . . . . . . . . . . .  Done running 10s outbound test (client-to-server [C2S]) . . . . . 1.95Mb/s running 10s inbound test (server-to-client [S2C]) . . . . . . 6.28Mb/s ------  Client System Details  ------ OS data: Name = Windows 7, Architecture = x86, Version = 6.1 Java data: Vendor = Sun Microsystems Inc., Version = 1.6.0_16 ------  Web100 Detailed Analysis  ------ 100 Mbps FastEthernet link found. Link set to Full Duplex mode No network congestion discovered. Good network cable(s) found Normal duplex operation found. Web100 reports the Round trip time = 188.31 msec; the Packet size = 1440 Bytes; and There were 1 packets retransmitted, 126 duplicate acks received, and 98 SACK blocks received The connection was idle 0 seconds (0%) of the time S2C throughput test: Packet queuing detected: 1.84% This connection is receiver limited 14.49% of the time.   Increasing the the client's receive buffer (255.0 KB) will improve performance This connection is sender limited 64.14% of the time.   Increasing the NDT server's send buffer (127.0 KB) will improve performance This connection is network limited 21.36% of the time. Web100 reports TCP negotiated the optional Performance Settings to: RFC 2018 Selective Acknowledgment: ON RFC 896 Nagle Algorithm: ON RFC 3168 Explicit Congestion Notification: OFF RFC 1323 Time Stamping: OFF RFC 1323 Window Scaling: ON Client is probably behind a firewall. [Connection to the ephemeral port failed] Information: Network Middlebox is modifying MSS variable Server IP addresses are preserved End-to-End Information: Network Address Translation (NAT) box is modifying the Client's IP address Server says [79.112.52.27] but Client says [192.168.2.101]

-----------------------------------------------------------------------------------------------

This helps you in any way?

[mudmanc4]

 Interesting for sure !!!

 I f this were me, I would get the latest firmware , and flash that puppy, the way it's acting is that it's a part of a botnet, this may be just a gut feeling because i don't see any data that would support this theory of mine. Question, if the network is left on, or open after the reboot , after the connection of the secondary machine, doe sit eventually revert to a slower connection ?


 Do you notice any page redirects ? Ever ? At all ?  

 Send yourself an email, depending on the client your using, you should be able to get a ton of information that for the most part will mean nothing to me, maybe you, but you may be able to track where the message went to , and what server it originated from, as well as the path it took to get back to your inbox. On that note , connect both machines, and run one of the following clients to remote control tha other machine,  logmein  << I prefer this one myself , or team viewer , if your going to use TV , then download the "unattended server  client ti the machine you want to control.

 Then once you have these up and running, do a tracrt from both of them, note the output, then do a tracrt to testmy.net , or  "74.54.226.166"  << which is tmn's Ip .

 Any configuration you can think of or use  from different perspective to find out of by any chance all your data is being re directed through someone's toy in there basement.

 You may have to allow the sending of yourself an email within the email client itself, as many times it is turned off for security reasons. I only use it for test purposes.

 Either way, i would inevitably just flash the latest firmware on that device, making certain that i have backed up my current config before doing so. Oh yea, were you able to get the confg from the router ? You could get down to the brass tacks of it by telnetting into the device, with windows you could use a free ssh telnet tool called putty

[Bog26]

You are suggesting that someone is intercepting my packets... acting as a proxy between me and the world?

The possibility of this happening is extremely low. Imagine that the firmware of the device has to be corrupted (this is what you are suggesting?)

On my laptop i had numerous windows and linux installs and on my desktop i have linux for almost an year (and before i had windows xp installed). I have a "basic" know how regarding software maintenance. I'm pretty sure that nothing suspicious is running on my systems deviating my packets and nothing could survive the re-installs

So... the only thing left to think about is the router itself.

Anyway... i will do some tests tomorrow.

Btw... i already said that i have the latest firmware and i'm also sure that i have download it from the official edimax website.

L.E
The image below shows a traceroute to the ip you've mentioned earlier. The left command window shows the trace before the restart (limited speed; i used both the wireless card and the wired card at some point) and the right cmd windows shows the trace after restart.
>>  http://img694.imageshack.us/my.php?image=11092009000801.jpg  <<

[mudmanc4]

In fact... i have already set up 2 IP addresses to be statically allocated taking into account the MAC address.

I'm using 2 machines: 1 is a Laptop and the other is a Desktop.
The Desktop is connected through a wire.
The Laptop is the machine i'm using the most. I'm using the wired connection in a part of my house where the Signal from my router is low and the wireless if i prefer another spot. So... imagine a very possible situation: i'm browsing the net on my laptop using the wire (wireless card disabled) and i want to change my location. I unplug the cable and i press the "enable/disable wireless" button. Now i'm connected through the wireless card

Ok, I got that, my next question would be this scenario ~ from what I gather so far, the desktop is always plugged in , and connected, correct me if I am incorrect in assuming this from what I have read , so the problem starts when the second, r in this case, the laptop requests an IP, then the laptop gets the shaft bandwidth wise ? If this is the case, then have you tried connecting the laptop first, noting the bandwidth details, then connecting the desktop, and what are the results. You could rule out many things by doing this, if you haven't already.

By posting here I especially wanted to know if this is a Normal behavior for a router: to automatically limit the speed if more than one device is connected. This is not the case in witch all N computers receive data at the same time and the speed for every computer is equal to (maxSpeedSetByISP / N)... . If you didn't know that this is normal and you don't think that over 90% of the routers out there act like mine... maybe i will purchase a new one. Oh... but not a Edimax router. I think it is a firmware problem

 This is a question that may have more then one answer as you know, if you have XXXX amount of bandwidth, and two or more machines using that connection, then the bandwidth would be susceptible to the router config. Which in this case may very well go beyond what shows on the GUI, which I believe to be true. Plus a couple other variables that haven't shown themselves yet.

I think i lost hope a long time ago. I'm pretty sure the router is stupid and not me.

By all means imo you are absolutely correct, as with any device, it doesn't think, it does strictly what it's programmed to do.


 Are you willing to get the config from the router ?