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WLAN very slow when wired LAN active

post #1 of 5
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I'm still having a very odd issue with my home network. I have a TP-Link WR-1043ND Wireless N router, which has a 1Gbps wired LAN attached to it. When I am only on the wireless, it works fine - when I am only on the LAN it works fine as well. However, if I am on both the wireless and the wired LAN at the same time, the wireless is abhorrently slow - maxing out at 18kbps. Literally.

My network isn't complex in the slightest. Router -> 1Gbps TP-Link unmanaged switch -> wired PCs. And, obviously, the wireless right off the router. This is in Linux and Windows both, the wireless card in my laptop is a Realtek RTL8188CE (Draft N).

I am at a loss as to what it could be. In both Windows and Linux, the wireless driver is the latest one released, firmware on the router is the latest and I'm unable to rule anything specific out that might be causing it because the slow down happens the moment any desktop/wired device gets an IP assignment (both static and DHCP are in use).


Really need help with this as it's very frustrating to have to use a wired connection with my laptop when my fiancee needs my desktop for homework.
    
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post #2 of 5
a quick fix that might work is flash your wireless router with dd-wrt, this should improve your wireless. your router supports it. i would do this anyway as it really unleases your router.


i dont think a mixture of static IP a DHCP leases will cuase this as i have a mixture. however make sure for dhcp you specfy a range of IPs to be leased to clients. for example, make the DHCP range 192.168.1.10 - 192.168.1.20 and static IPs 192.168.1.100, .101 etc if you have more, this will avoid IP conflicts cause be the DHCP server leasing out an static IP thats allocated to a device to another device.
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post #3 of 5
Probably the sheer amount of processing required from both Wired & Wireless like the above poster said try DD-WRT or Gargoyle Router and see if it helps.

Usually custom firmwares are less resource intensive vs stock firmwares.
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post #4 of 5
Thread Starter 
Quote:
Originally Posted by stubass View Post

a quick fix that might work is flash your wireless router with dd-wrt, this should improve your wireless. your router supports it. i would do this anyway as it really unleases your router.
i dont think a mixture of static IP a DHCP leases will cuase this as i have a mixture. however make sure for dhcp you specfy a range of IPs to be leased to clients. for example, make the DHCP range 192.168.1.10 - 192.168.1.20 and static IPs 192.168.1.100, .101 etc if you have more, this will avoid IP conflicts cause be the DHCP server leasing out an static IP thats allocated to a device to another device.

I'd rather not load dd-wrt. There are no conflicts anywhere on the network with IP leases, or hostnames.


New info: my fiancee's laptop works fine on the wireless while I'm on my desktop (problem being that her laptop has other issues, but it was stable enough to get up and running for a quick test). So it comes down to either my wireless card, or my router doesn't like my wireless card.
Quote:
Probably the sheer amount of processing required from both Wired & Wireless like the above poster said try DD-WRT or Gargoyle Router and see if it helps.

Usually custom firmwares are less resource intensive vs stock firmwares.

See above - very unlikely it's overwhelmed.


Custom firmware is also more likely to cause other instability issues. I'm not up for swapping one issue for another.
    
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post #5 of 5
well try and see if you can borrow another wireless router and see if it works fine. if so replace yours.. make sure your wireless adapter is suited for your modem by looking at the specs of both. update wireless adapter drivers if need be. try too elliminate one device at a time thumb.gif
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Going to be chaep
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Wife's Rig
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CPUMotherboardGraphicsRAM
i7-3770k Gigabyte GA-Z77X-UP5 TH MSI GTX460 G.Skill TridentX 2400 2 x 4GB 
Hard DriveHard DriveOptical DriveCooling
Plextor M5p 128GB 2 x WD 500GB Blues LG Prolimatech Megahalems Rev C 
CoolingOSMonitorPower
Arctic F12 CO PWM x 2 Push/Pull Windows 7 64 bit Ultimate LG IPS235V Corsair AX850 
Case
Coolermaster HAF 912 advanced (Asia version) 
CPUMotherboardGraphicsRAM
I5-3570K Gigabyte Z68X-UD3H-B3 Inno3D Ichill GTX660 8GB G.Skill RipjawsX 1600 
Hard DriveHard DriveOptical DriveCooling
Samsung 830 128GB WD black 500GB Liteon Coolermaster Hyper 212+ EVO 
OSMonitorPowerCase
Win 7 ultimate Samsung Syncmaster 932gwe+ OCZ ZT series 550W Coolermaster 410 
CPUMotherboardRAMHard Drive
1.67Ghz Atom stock 1GB DDR2 2 x 500GB Western Digital Cavier Blacks [RAID 1] 
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stock DSM3.2 [built on linux] stock stock 
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