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dutch E4200 wifi nightmare / <50% of wired speed

Discussion in 'Tomato Firmware' started by RobbenR, Oct 7, 2013.

  1. RobbenR

    RobbenR Reformed Router Member

    Hi guys,

    I've been reading posts now for three days but I still can't find the solution to my problem
    First of all I'm happy that I lost that crappy firmware of Linksys. pffftttt don't know why there is a Cisco name on it because I don't see the quality yet. so that's why I'm asking kindly for some help.

    let me explain it a little bid.
    I have a 150Mbit isp connection (ziggo)
    I have a E4200 which is looking much better with the Tomato on it.
    I have lots of problems. :)

    Is it me, yeah.. probably. let's call me a beginner.
    but. this beginner getting smarter and more confused by reading all these posts.

    on the 5Ghz band I get around 50Mbit on the test. 142 wired. :-

    on the 2.4 (horrible) 0.94 till 8.5Mbit so the focus is on the N network.

    but still, I have changed so many settings and back that I the feeling that I'm lost in the Forrest of networks.

    Can anyone help me out please! cause I'm loosing this battle.

    I know for sure you need more info. but please tell me and I will provide.
    got the Google flue from all that searching so that's why I'm calling for help.

    Version 1.28 of the veggie.. or is a fruit. :)
    distance to router. couple of feet, same room.

    Wireless Mode Access Point
    Wireless Network Mode Auto
    Interface Status Up (LAN)
    Radio Enabled
    SSID blablabla
    Broadcast Enabled
    Security WPA2 Personal (PSK) + AES
    Channel 136 - 5.680 GHz
    Channel Width 40 MHz
    Interference Level Acceptable
    Rate 162

    Laptop NIC is showing 300/405Mbps

    Thx a million in advanced.
  2. Marcel Tunks

    Marcel Tunks Networkin' Nut Member

    142Mbit is good for the E4200 with Tomato. Which firmware are you using? Victek's Speedtest mod?

    If you're talking about application level throughput (e.g. downloading a file across your network) then 50Mbit on the 5GHz band is not surprising, though it may be possible to do better under the right circumstances.

    Issue 1 with is interference:
    - Are there any detectable neighboring 5GHz networks? (for WLAN interference)
    - Have you tried the lower band in the 5GHz range? (for possibly less non-WLAN interference)

    Issue 2 is sending and receiving hardware and settings:
    - Even if router and client are in the same room, physical orientation and obstacles are very important in the 5GHz band. Tilting, turning, or moving the router or client may be needed
    - Router transmission power too low can be a problem for distant clients, transmission power too high can be a problem for nearby clients, but the client NIC is more often the problem than the router when it comes to transmission power and sensitivity. Start by disabling any power saving features in the laptop NIC
    - Consider posting a screenshot of your advanced wireless settings

    Your 2.4GHz network isn't doing so well, even for a busy wireless environment. It may not be a lost cause, though. A screenshot of your Basic settings page (the wireless part) may be helpful.
  3. Kim K

    Kim K Serious Server Member

  4. Marcel Tunks

    Marcel Tunks Networkin' Nut Member

    With due respect, I disagree with some of the content on that page. Starting with the advice that I provided and screenshots of your Basic and Advanced Wireless pages would be helpful to give a more step by step approach and explain why any changes should be considered.

    Edit: sorry for the incomplete response @Kim K - I'm in the midst of an 80+ hour work week.

    The link from "Steve Jenkins" is a mashup of old advice in the dd-wrt forum on how to get the highest Speedtest numbers, not how to get the best experience for users.

    By increasing buffers there is the potential to add latency. Some of the advice may work in individual situations, but isn't easily generalized. For example, frame burst and interference mitigation have highly variable effects depending on the number of clients in your own and neighboring networks.

    Some of the advice is also plainly incorrect: Allowing Afterburner/Speedboost in the 5GHz band does not make sense. The advice on upper vs lower channels in the 5GHz band is outdated. (36-48 work just as well as 149-161.) The limitations imposed on power output in the lower band do not apply to SOHO routers operating at much lower power levels. You also can't rely on the "Auto" setting for wireless channel selection.

    If your main concern is time to complete large file transfers through the WAN interface and you don't care about latency or wireless performance with multiple clients, then go ahead and use some of those settings. In general though, it's probably best to ensure that the basic settings are correct before trying to dive into "TCP tuning."
    Last edited: Oct 8, 2013
  5. RobbenR

    RobbenR Reformed Router Member

    pjeew, glad that I start asking question because there are a lot of opinions. :)

    I made some screenshots. hopefully they can help.
    ps, on the original linksys firmware I got high speeds but I always lost the connection so that's why I have swapped.

    top one is the wired one! :) second one is the 5Ghz as you can see.
    I don't post the 2.4 because its crap.




    Advanced Settings:

    I have been playing around so it could be a bid of a mess,, but whatever I did... It din't help me a lot. :) I'm using this one btw: Tomato Firmware v1.28.0502 MIPSR2Toastman-RT-N K26 USB VPN

    Attached Files:

    Last edited: Oct 8, 2013
  6. RobbenR

    RobbenR Reformed Router Member

    somehow my spend went up from 50 to 85Mbit.
    the only thing I changed was changing the security and I have put the wireless mode from the 2.4Ghz back to auto.
  7. Marcel Tunks

    Marcel Tunks Networkin' Nut Member

    Unless you're going to use the middle band, consider switch from Belgium to USA or Canada if you want to experiment with differences in power output.
    Try the lower band (channels 36-48) and consider manually selecting the channel.
    If you don't have any 802.11a devices, try n-only in Basic settings.
    Consider 802.11n Preamble to Greenfield in Advanced Wireless if there are no 802.11a devices nearby.
    Try changing from default Transmit Power to something relatively low (maybe in the 30-50 range, especially if the client is nearby.)
    See the other recommendations in my first post.

    Tough to comment without seeing the settings, but it looks like it's set to 802.11g. Do you have any n clients? If so, consider adding 802.11n support. If there are no b/g clients then switch to n only. Ensure 20MHz channel width and channel 1, 6, or 11 manually selected. Consider a relatively low transmission power. If still unhappy, then consider experimenting with interference mitigation.

    Keep in mind that wireless is subject to so much interference and other factors that reliably determining if a change is beneficial can be very difficult. It takes patience. You may think you've got it ideally set until your neighbour turns on a dishwasher, bathroom fan, baby monitor, microwave, cordless phone, changes their WiFi settings, etc...
  8. Toastman

    Toastman Super Moderator Staff Member Member

    and your router, set to "auto", decides to jump to another channel :p

    "Auto" is a bad idea.

    There are several articles in the thread "Common Tomato Topics" that may be useful to read on the subject of wifi.
    Marcel Tunks likes this.
  9. RobbenR

    RobbenR Reformed Router Member

    Thank you guys for putting some breadcrumbs into my Forrest :)
    I'm happy now with the results of the 5Ghz... 85/90Mbit in the tests...
    only the 2.4 is a bit a problem. I must read more about the transmitting power because its on the default. ( 0 )

    shoot I should already be at work but can't answer your questions then and test..
    so sorry boss...

    2.4 info

    It's horrible. I am connect but It won't show me anything. or really slow.
    Have to go now but I will check all your comments tonight when I'm back from work.

    Thanks again guys.:D
  10. RobbenR

    RobbenR Reformed Router Member

    one question more. why is the speed fluctuating. it goes from 170 to 340 and back, and on the 2.4 the same: :(
  11. Toastman

    Toastman Super Moderator Staff Member Member

    This is WiFi ... you are sharing the channel with many other people most of whom you can't see. Marcel has already touched upon some of them. The router negotiates and changes its speeds from moment to moment depending on many factors, which are often unknown to us.

    If you need fast throughput and stability, you must use a wired connection.
  12. RobbenR

    RobbenR Reformed Router Member

    sorry for not responding but I was struggling with something else.. The good old Flue.

    I'm starting to like these comments. of course wired is better but I still didn't find the plug for my android device.
    Chinese quality doesn't have a GHz band so I must tweak the 2.4 also.
    I will keep you informed about this mission. Whether you like it or not.. ;)
    I must say that it's a good working ROM mr. Toastman.

    So BIG thx from me and a lot of other people I know.:D
  13. ilovejedd

    ilovejedd Addicted to LI Member

    Had the same issue on a bunch of routers (RT-N12 D1, E900 and E2500). Disabling WMM in Advanced -> Wireless fixed it for me. Doing so did drop the connection to G speed but it doesn't really matter for me as this router is connected to LTE (which nowadays, seem to max out at 10/5).
  14. Toastman

    Toastman Super Moderator Staff Member Member

    Yes, this is true. For that reason, among others, it is pointless to try to use N access points in busy locations, G is always faster. Except:

    We have ISP's in this country erecting thousands of 2.4GHz access points all over the city on top of tall buildings, jamming home routers and each other for many kilometers. And now - they appear to be switching them to use "N" wifi, the situation has got much worse than before.

    But they are now able to advertise "N" speeds to the masses. There's no going back. Anyone using these access points (mainly phone users who, as you say, have no LAN socket and hence, nochoice) quickly finds that they are basically useless.

    Unfortunately, there either seem to no knowledgeable techicians working for the ISP's, or their opinions have been ignored by the management.

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