WRT54G throughput after cable modem

Discussion in 'Cisco/Linksys Wireless Routers' started by orbita, May 21, 2007.

  1. orbita

    orbita LI Guru Member

    I have a WRT54G v3.1 with DD-WRT 23 SP2. This router connects to a motorola SB6100 modem. If my laptop is directly connected to the modem, the speed test can attain up to 70 Mbps (I have a 100Mbps cable service). However, if the laptop is behind the router, the max speed is only 21Mpbs. I need to use the router to provide internet access to other PCs in my house.
    Can anyone give me some hints on this problem?
    Thank you.
  2. jchuit

    jchuit Network Guru Member

    Max speed of wrt54g

    WAN-SPI firewall (WAN to LAN):
    The wrt54g v3.1 (216 Mhz) has a max WAN-http speed of 24 Mbit/s, wrt54g v4 and the wrt54gl have a max WAN-http speed of 32 Mbit/s. The SPI-firewall is Linux based, the speed is also firmware dependend.

    LAN, the 4-port switch:
    The wrt54g switch can go upto 70 Mbit/s.

    I have read that, if you disable the SPI-firewall you can go upto 35 Mbit/s, this is something to try.

    The wireless interface is slower, around 10Mbit/s upto 30 Mbit/s at max.

  3. orbita

    orbita LI Guru Member

    wow, that means there are no way I can enjoy my 100Mbps service behind the router?
    Can I tweak the router in some way?
    I've already turn off the SPI firewall. The max speed I can obtain through the wired connection is 23Mbps. For wireless, the average is about 18Mbps.
    Are there any other routers in the market that have a 100Mbps LAN-WAN throughput? (Not the expensive ones for companies. Those routers are too expensive)
  4. Herog

    Herog Guest

    Any fix for this to bump up the WAN HTTP speed?

    I know this is an old post, but I am having the same issue atm.
  5. nic.nyfiken

    nic.nyfiken Reformed Router Member

    What I have found, and Linksys will not tell you this, is that if you activate any of the functions associated with Access Restrictions in the WRV54G menu, your internet speeds will be reduced. If you have not upgraded to 2.37 don't. It is worse, at least in terms of access restrictions and internet speed, than the previous firmware. I ended up disabling all Access Restrictions to resolve my internet speed problem...
  6. nic.nyfiken

    nic.nyfiken Reformed Router Member

    You must be using 2.37 which I found it to be the worst. 2.36 is better but not by much...
  7. nic.nyfiken

    nic.nyfiken Reformed Router Member

    Well, here's an update. Linksys has notified me that this is not a hardware issue, but a firmware problem after all.
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