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QOS, Utorrent and Skype.

Discussion in 'Tomato Firmware' started by bendoc91, Mar 23, 2009.

  1. bendoc91

    bendoc91 Guest

    I have a problem with Tomato's QOS.
    I have set up everything after having read every guide I could put my hands on.
    In short, I have changed some percenteges as a few people recommended and unchcecked ACK.
    In the classifications, I have the defaults (WWW,WWW (512K+), the DNSs and bulk traffic) and I have added my own:
    Utorrent which is the port that I am using
    Utorrent (this time the IPP2P for Bittorrent)
    The two L7s for Skype (Skype to Skype and Skypeout)
    And last but not least, i have added the computer that I call from using Skype's MAC into the High category.
    With this config, people cannot hear me properly on Skype while I'm running Utorrent but as soon as I close Utorrent they can hear me perfectly. Also, when looking at the connections graph, I see that most of the connections are either lower (the only one in the lower class for me is bulk traffic) or unclassified, and in the bandwidth usage, most of the time the lowest category (apperently Bulk Traffic) dominates the camambert.
    Can anybody please help me figure out why Tomato is refusing to recognize my uTorrent and let me live a nice Skypeful life?

    Thank you all very much for taking the time to read my whining:)
  2. Toastman

    Toastman Super Moderator Staff Member Member


    Your P2P client(s) are almost certainly sending out too much data - and this results in a HUGE amount of incoming data - swamping your incoming link. Try setting your outgoing P2P to say 5% bandwidth or less, see if it improves. Then increase slowly if necessary. Set a limit in incoming bandwidth of say 50% or less. You should be able to tame it. Unchecking ACKS will slow down wanted traffic and should not be necessary, this is a sign that the guides you've read were not well thought out. Reduce timeout values in Conntrack/netfilter to cut down on numbers of connections.

    PP2P and L7 filters don't usually work well especially for P2P. It is better controlled with a different method.

    I wonder if you read this guide? The way you are trying to handle P2P is unlikely to work, perhaps a good read of this thread would give you some ideas.


    This thread will show you the tricks of limiting both UDP and TCP connections and methods to deal with P2P.

  3. bripab007

    bripab007 Network Guru Member

    Basically, what Toastman said. Honestly, if you just define Skype as a high or highest priority, along with the basic rules, uTorrent should fall into the lowest, bulk group automatically, so you really don't need to define a rule for it. Then, as Toastman said, limit the max outbound bandwidth of whatever group that falls into.

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