Wireless Speed peeking at 5 Megabits?

Discussion in 'Cisco/Linksys Wireless Routers' started by Lazybones, Feb 24, 2005.

  1. Lazybones

    Lazybones Network Guru Member

    I have tested my connection with a few different wireless adapters now and am getting disappointing speeds.

    I have tested with both B and G units and only average 3 Megabits per second with a Peak of 5 Megabits.

    My Link quality and signal strength are around 70 to 75 %

    I am not even getting close to a 11 Megabit wireless B speed with G adapters.

    Any suggestions?

    I have tried changing the channels but nothing seems to change the speeds I get.
  2. Toxic

    Toxic Administrator Staff Member

    what WRT do you have? G or GS?

    also try enabling frameburst.
  3. Esquire

    Esquire Mesquire Staff Member Member

    Can you clarify how you conducted your speed test?
  4. Lazybones

    Lazybones Network Guru Member

    I have a WRT54GS.

    I saw no change with frameburst mode.

    I have a server on my local network.

    I am using Smart FTP and DU Meter to confirm speeds as well as Windows XPs netowork tab, they are all consistant.

    Wired I am able to get transfters up to about 80 Megabits /s, this is fairly normal for a 10/100 network depending on the quality of network cards in use.

    Wireless I am getting 3 = 5 Megabits /s

    I under stand the diffrence between Megabits and Megabytes.. I have set DU Meter acordingly.

    I am transfering a large video file back and forth, this normaly alows for enough time for speed fluctuations to even out.

    I have seen several other posts (with no replies) in the forums also reporting speeds around 5Mb/s it doesn't seem to be firmware dependent as I have tested other firmware.
  5. Esquire

    Esquire Mesquire Staff Member Member

    Alas if it were Megabytes it would have been more consistent with and even outperforming the usual expectations.

    Are you running in Mixed Mode with both B and G clients connected?

    The signal quality is rather poor. Are the clients and router in the same room when you conducted the test? Physical obstacles can absorb/affect the signal which can lead to packet loss requiring retransmission, hence a hit on performance.
  6. Lazybones

    Lazybones Network Guru Member

    I have tested in the same room and in both G mode and Mixed mode.

    I think the highest strengh and quality I have had is 80% .. I see no speed change.

    I am starting to think its a defective unit. But I don't think I can exchange it since it, it self was a replacement for a WRT54G.
  7. Esquire

    Esquire Mesquire Staff Member Member

    But are you having both B and G clients connected at the same time? From your 1st post you sounded like you were running a mixed B/G network (not referring to the Mixed Mode in the router).

    The 802.11g standard permits performance degradation of G devices when operating in a mixed network, but since you haven't clarified this fact this is only FYI. Right now, your network throughput numbers look similar to the best of B-only networks. Also, transfer between wireless/wireless clients is often lower than that between wireless/wired clients.

    A max of 80% reported signal strength also sounds rather low for a connection in the same room. Are the adapter drivers and their connection managers up-to-date? I usually get 100% being 5ft away (in the same room), and drops to about 70% being 30ft away, through 2 brick walls.
  8. Lazybones

    Lazybones Network Guru Member

    Even when the routher is set to G only mod I still get the same speeds.

    I have tested with 3 different Wirless units and 3 -5 Megabits is all I ever get.

    1. Tested with a Linksys wirless B unit
    2. Tested with a Inexq wirless G unit
    3. Tested with an HP laptop with built in Intel wirless G.

    Even in mixed mod I should be getting better than 3-5Megabits should I not?

    I know that Wirless B never hits 11Mbps but from what I have heard I should be able to get a transfer rate close to 6-7 Mbits.. Not 3 with a spike to 5 some times.
  9. bluedog

    bluedog Network Guru Member

    I know this isn't that helpful, but a user posted a windows setting that was changed. Before the change he had limited wireless bandwidth to the computer. After the change his bandwidth was equal to that of clients connected via wire. I tried using the search on this site, but it wasn't working for me :?: .

    Hopefully this might give you a lead... Oh and I believe the post was within the last 7 days.

    EDIT: Added link to posting..

  10. nine_tak

    nine_tak Guest

    Wireless networks never reach the theoretical bandwidth limits. 802.11b networks typically get 2-5Mbps. 802.11g is usually in the 13-23Mbps range. Belkin's Pre-N equipment has been measured at 37-42Mbps
  11. grape8pe

    grape8pe Network Guru Member

    I'm having basically the same problems as you, the only difference is that when I connect with my my laptop card the speeds are great but when I connect with my PCI card it tops out around 5Mbps.
  12. DavidC

    DavidC Network Guru Member

    Have you tried changing the Tx rate from auto to a fixed speed (do this on the router and all wireless clients).
    I had the same problem and found 24Mbps fixed rate provided the best speed
    about 12 Mbps - not great I know but much better than the 3-5 I was getting!

    Hope this helps!!
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