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54Mbps connect yet unequal Upload/Download speed - wpc54gs

Discussion in 'Other Linksys Equipment' started by treedmack, Jun 8, 2006.

  1. treedmack

    treedmack LI Guru Member

    I can't seem to find an answer to this anywhere.

    I just bought a wpc54gs card and am using it on a dell inspiron 8000 with Winxp sp2. I have a WRT54G router which also services a del inspiron 630m with onboard wireless (and winxp sp2). The router is set up with WPA personal tkip+AES and has worked well on my LAN. I have a pc connected to the LAN by wire to the router.

    With the insipron 630 I can transfer files to and from the pc with about 2.5-2.8 MB/sec speeds (at 54MBps). With the inspiron 8000, I can only download files from the pc to the wpc54gs at speeds of 2.5-2.8 MB/sec (at 54MBps). When I try and upload a file from the wpc54gs to the pc I am limited to a rock solid 800kB/sec.

    I have used the winxp wireless control of the wpc54gs as well as installing the linksys software - no difference. The firmware of the router is v4.20.7 (close to the most recent - the change files indicate no big changes). I have tried tweaking the settings of the wpc54gs (i.e. speedboost on/off etc.) but nothing seems to have an affect. (I'm hoping to do backups over the wifi and the slow upload to the pc, which is linked to a large external hard drive containing the backups, means taking 2-3hrs per backup compared to less than 1hr.)

    I have spent a frustrating day googling and reading forums where no one seems to mention this issue anywhere. Which makes me think that it is partucular to me or it is common knowledge.

    any suggestions or info would be greatly appreciated
     
  2. treedmack

    treedmack LI Guru Member

    Take 2

    How about this...

    Does anyone with a wpc54gs card obtain equal max uload and download speeds of 2-3Mbps on their LAN or is everyone with this card also experiencing slower upload speeds of approx 800kBytes/sec.

    This information would be helpful for me to know whether this is a property of the card or a problem with my local setup. Cheers.
     
  3. HennieM

    HennieM Network Guru Member

    I have a WPC54GS (V2) and a WPC55AG (V1.2), and a WRT54GS (V5.1) [yes, the dreaded 5.1] with latest Linksys firmware. I run WPA-PSK with AES encryption, as tomsnetworking seems to suggest for best performance with encryption, and I found it so. I use the WRT54GS just as access point so no routing overhead at current.

    I tested with a 106MB exe file copy from XPSP2 Laptop (wired, or WPC54GS, or WPC55AG) to Wired XPSP2 PC, while Windoze showed the wireless speeds as 54Mb/s. All transfers were done while sitting at the Laptop. [Note MB = MByte, Mb = Mbit]

    Laptop --wired--> PC: about 9MB/s
    PC --wired--> Laptop: about 9MB/s

    Laptop --WPC54GS--> PC: 2.1 - 4.5 MB/s, average about 3.2 MB/s
    PC --WPC54GS--> Laptop: 2.5 - 3.5 MB/s, avg about 3 MB/s

    Laptop --WPC55AG--> PC: 1.5 - 2.5 MB/s, avg about 2.1 MB/s
    PC --WPC55AG--> Laptop: 2.5 - 3 MB/s, avg about 2.9 MB/s

    These figures are just as I tested just now. With the PC --WPC54GS--> Laptop I sometimes get about 3.5MB/s avg xfer rate.

    I also have a WUSB54GS (V2) but I did not test - I only have standard USB (12 Mb/s or so) ports on the laptop, so I usually get less than 1 MB/s xfer rate with it.

    Some notes:
    The WPC54GS card has best xfer rate (thanks Afterburner), but pathetic distance.
    The WUSB54GS has best distance, but I dunno the xfer rate.
    The WPC55AG fits somewhere between the above 2.

    I think the different rates for up/dn-load, has to do with the MTU of the wireless which is at 2346 or something like that, while the wired ethernet stuff is at 1500. So some fragmentation or other frame size stuff may play a role.

    Question: How can I tweak the xmit power (or something) of the WPC54GS to hopefully get better distance?
     
  4. KevinFarr

    KevinFarr Addicted to LI Member

    Your hardware doesn't decide how fast things transfer. The only thing hardware will do is limit speed if what you're transferring is able to transfer faster than 54mbit/s.

    The protocol you're using will effect download/upload speed. Transferring using Windows networking (NetBios) junk will only get you about 2-3MBit/s.

    Download from the internet, you will not get 54MBit/s by any means, in about 98% of home applications, or even at a workplace or anything.

    Long story short, you wont get 54MBit/s while doing almost anything. It all depends on how the data is transferred and what you're transferring it with. Internet speeds are dependent on your ISP, and transfer rates on sharing files from computer to computer depend on what you're using. If you want to transfer things faster from computer to computer, I would recommend using FTP. You can find all kinds of programs on the internet.

    Hope that helps.
     
  5. HennieM

    HennieM Network Guru Member

    Well Kevin, welcome to Linksysinfo. Your contribution is appreciated, but I'd suggest 2 things:

    1) Check the date on the thread before posting
    2) Stay on topic
     
  6. KevinFarr

    KevinFarr Addicted to LI Member

    Yeah, I realized that after posting. Figured things moved quicker than they do, so I didn't bother checking. Not used to slower forums. Sorry about that.
     

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