"Slow" Internet Performance

Discussion in 'Cisco/Linksys Wireless Routers' started by Martin-S, Oct 21, 2006.

  1. Martin-S

    Martin-S Guest

    Recently the network in my hometown got upgraded to glassfibre, and as a result of that, i've got very decent up and download speeds compared to my old 6MBit ADSL connection

    To put it simple: i'm basically on a city/town-wide 100Mbit LAN. The highest download speed i've reached so far was about 11500KB/s (corresponds to about 92Mbit bandwidth which should be about maximum). Upload speed is about 3300KB/s (10MBit) :biggrin: :eek:

    Transfer rate.JPG

    The problem:

    When i connect the lan cable from my "modem" (it's not really a modem, but just a little box where the internet connection enters my house) directly into one of the NIC's in my pc, i've got the full bandwidth (100Mbit up, 10Mbit down)

    However, when i make a connection via my WRT54G (V2.2 firmware v4.71.1, Hyperwrt 2.1b1 + Thibor15c), i'm "only" getting about a 20MBit download speed

    I have allready set CPU_Overdrive=1 so the CPU runs a staggering 16MHz faster than stock, but that doesn't seem to help.

    After this long story, i've got a few questions:

    - Could it be that the WRT54G isn't able to handle these speeds on it's WAN port?
    - If so, then why am i able to reach normal (100MBit) speeds when transferring files over my (2pc) network? (via the router)
    - Are there any solutions to this problem??

    - if not: you guys know a router with about the same functionality of the WRT54G (altough i'm quite happy with the WRT), but which can cope with these kinds of speed of should i let my pc handle the Internet connection and the routing and just use the WRT for it's Wireless functions??

    (ps, This is the link is used to download XP SP2 Service pack

    *update* i've just reverted to the original Linksys Firmware to see if the HyperWRT was the problem, but it didn't help. Back to HyperWRT......
  2. NateHoy

    NateHoy Network Guru Member

    There you have it... the limits of a small processor. Your WRT54G is using a 200 or 216 Mhz processor, running embedded Linux. It's not going to get much more than 20MBps, because it simply wasn't designed to route that kind of data over those speeds. The WAN PORT can handle the speed, but remember that each packet needs to be processed and routed based on a NAT table lookup, etc. And only 200 of those operations can be done per second, and each packet goes through multiple operations...

    The WRTSL54GS runs a slightly faster processor, so you might get some more speed out of it. But your best bet is IPCop or M0n0wall or one of the PC-based firewall products on a spare machine with two NICs, or (as you said) simply get two NICs for your spare machine and turn it into a router, plugging one NIC into the Internet modem, and the other into a LAN port on your WRT54G, which gives you three free LAN ports, plus wireless.

    Then rest secure in the knowledge that 90% of people on this board are insanely jealous of your "problem" (grin). My 2.5 mbps down / 200 kbps up is looking SOOOO freaking pathetic right about now. LOL!
  3. jchuit

    jchuit Network Guru Member

    I don't think it is the processor only:

    For the Tarifa b025 firmware i did some testing of the SPI firewall (WAN to LAN) and here are some conclusions:

    The wrt54g v2 to v3.1 and the wrt54gs v1 to v3 have a maximum WAN speed for http @ 3MByte/sec (tested @ 216 Mhz)
    setting from 200 Mhz to 216 Mhz gains 5% in speed.
    FTP speed from WAN to LAN around 41 Mbps and from LAN to WAN around 22Mbps

    The wrt54gL v1 and v1.1, the wrt54gs v3.1 to v4, and the wrt54g v4 have a maximum http @ 4MByte/sec
    FTP speed from WAN to LAN around 46 Mbps (max average 38 Mbps) and from LAN to WAN around 20Mbps

    The wrt54gl is much faster and the LAN to WAN speed is low, but this seems firmware dependend. The ftp speed is higher then the http speed.

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